About Textpresso Categories/Ontology Copyright Downloads Feedback Home Query Language Search User Guide
Enter keyword(s) and/or category/ies. Selecting categories for a query makes a search more specific. For example, you can retrieve sentences that contain the word HSN and a Oryza sativa gene name by typing the keyword 'SPW1' and choosing the category 'gene (Oryza sativa)'. A category hit occurs when a particular word or phrase in the sentence is defined as a member of a particular category. Categories will be concatenated by a Boolean 'and' operation to other categories and keyword(s) if present. To search for terms in categories, click on the Categories/Ontology link above.
Keywords
Separate multiple, required keywords by white spaces (Boolean 'and').
Separate multiple, alternative keywords by a comma with no white spaces (Boolean 'or').
Enter phrases in double quotes, and put a '-' sign in front of words which are to be excluded.
Keyword Specification
AND/OR
Categories
Fields
Search Scope
Search Mode
Sort by
 
Narrow your search results with filter:
Put a '+' sign in front of words which have to be included, a '-' sign in front of words which have to be excluded. Enter the field of the word, viz author, title, year, journal, abstract, type or sentence in square brackets. Enter phrases in double quotes.
For example, to find all the papers in the search result that have Jack as author, but not John, enter +Jack-John[author]. To exclude all papers that have the phrase double mutant in title, enter -"double mutant"[title]. You can combine several filters and enter something like +Jack-John[author] -"double mutant"[title] +1994[year] -review[type].
Click on Filter! button to activate the filter.

Goto:
of 5
Display options:
author: on | off accession: on | off type: on | off abstract: on | off title: on | off
citation: on | off journal: on | off year: on | off supplementals: on | off textlinks: on | off
searchterm-highlighting: on | off matching sentences: none 1 5 10 entries/page: 5 10 20 50
92 matches found in 40 documents. Search time: 0.004 seconds.
Global links/files: all results in endnote all results in print version
Score: 23.00
Title: Pathogen-induced expressional loss of function is the key factor in race-specific bacterial resistance conferred by a recessive R gene xa13 in rice .
Author: Yuan M Chu Z Li X Xu C Wang S
Journal: Plant Cell Physiol Citation: V : 50 P : 947-55 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub19318375 Accession (PMID): 19318375
Abstract: The fully recessive disease resistance ( R ) gene xa13 , which mediates race-specific resistance to Xanthomonas oryzae pv . oryzae ( Xoo ) , encodes a plasma membrane protein that differs by one amino acid from that encoded by its dominant ( susceptible ) allele Xa13 . The molecular mechanism of xa13-mediated resistance is largely unknown . Here we show that , compared with its dominant allele , expressional non-reaction of xa13 to Xoo infection , not its protein composition , is the key factor for xa13-mediated resistance . We used the promoter ( P ( Xa13 ) ) of the dominant Xa13 , which was induced by only the incompatible Xoo strain for xa13 , to regulate xa13 and xa13 ( Leu49 ) ( a natural recessive allele of xa13 ) in the rice line IRBB13 carrying xa13 . The transgenic plants showed the same level of susceptibility and bacterial growth rate as those of the rice line carrying dominant Xa13 , accompanied by the induced accumulation of xa13 or xa13 ( Leu49 ) proteins . Constitutive expression of dominant XA13 or different xa13 proteins ( xa13 , xa13 ( Leu49 ) , xa13 ( Ala85 ) or xa13 ( Val184 ) ) in IRBB13 had no effect on Xoo infection in the transgenic plants . These results suggest that race-specific pathogen-induced Xa13 expression is critical for infection . Thus , xa13 stands out from other R genes in that its functions in disease resistance are due to only the loss of pathogen-induced transcriptional motivation caused by natural selection .
Matching Sentences:
[ Sen. 4, subscore: 7.00 ]: We used the promoter ( P ( Xa13 ) ) of the dominant Xa13 , which was induced by only the incompatible Xoo strain for xa13 , to regulate xa13 and xa13 ( Leu49 ) ( a natural recessive allele of xa13 ) in the rice line IRBB13 carrying xa13 .
[ Sen. 6, subscore: 6.00 ]: Constitutive expression of dominant XA13 or different xa13 proteins ( xa13 , xa13 ( Leu49 ) , xa13 ( Ala85 ) or xa13 ( Val184 ) ) in IRBB13 had no effect on Xoo infection in the transgenic plants .
[ Sen. 5, subscore: 3.00 ]: The transgenic plants showed the same level of susceptibility and bacterial growth rate as those of the rice line carrying dominant Xa13 , accompanied by the induced accumulation of xa13 or xa13 ( Leu49 ) proteins .
[ Sen. 1, subscore: 2.00 ]: The fully recessive disease resistance ( R ) gene xa13 , which mediates race-specific resistance to Xanthomonas oryzae pv . oryzae ( Xoo ) , encodes a plasma membrane protein that differs by one amino acid from that encoded by its dominant ( susceptible ) allele Xa13 .
[ Sen. 3, subscore: 2.00 ]: Here we show that , compared with its dominant allele , expressional non-reaction of xa13 to Xoo infection , not its protein composition , is the key factor for xa13-mediated resistance .
[ Sen. 2, subscore: 1.00 ]: The molecular mechanism of xa13-mediated resistance is largely unknown .
[ Sen. 7, subscore: 1.00 ]: These results suggest that race-specific pathogen-induced Xa13 expression is critical for infection .
[ Sen. 8, subscore: 1.00 ]: Thus , xa13 stands out from other R genes in that its functions in disease resistance are due to only the loss of pathogen-induced transcriptional motivation caused by natural selection .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 8.00
Title: High-resolution genetic mapping of bacterial blight resistance gene Xa10 .
Author: Gu K Sangha JS Li Y Yin Z
Journal: Theor Appl Genet Citation: V : 116 P : 155-63 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub17924090 Accession (PMID): 17924090
Abstract: Bacterial blight of rice , caused by Xanthomonas oryzae pv . oryzae ( Xoo ) , is the most devastating disease of rice ( Oryza sativa L ) . Rice lines that carry resistance ( R ) gene Xa10 confer race-specific resistance to Xoo strains harboring avirulence ( Avr ) gene avrXa10 . Here we report on genetic study , disease evaluation and fine genetic mapping of the Xa10 gene . The inheritance of Xa10-mediated resistance to PXO99A ( pHM1avrXa10 ) did not follow typical Mendelian inheritance for single dominant gene in F2 population derived from IR24 x IRBB10 . A locus might be present in IRBB10 that caused distorted segregation in F2 population . To eliminate this locus , an F3 population ( F3-65 ) was identified , which showed normal Mendelian segregation ratio of 3 : 1 for resistance and susceptibility . A new near-isogenic line ( F3-65-1743 ) of Xa10 in IR24 genetic background was developed and designated as IRBB10A . IRBB10A retained similar resistance specificity as that of IRBB10 and provided complete resistance to PXO99A ( pHM1avrXa10 ) from seedling to adult stages . Linkage analysis using existing RFLP markers and F2 mapping population mapped the Xa10 locus to the proximal side of E1981S with genetic distance at 0 . 93 cM . With five new RFLP markers developed from the genomic sequence of Nipponbare , Xa10 was finely mapped at genetic distance of 0 . 28 cM between proximal marker M491 and distal marker M419 and co-segregated with markers S723 and M604 . The physical distance between M491 and M419 on Nipponbare genome is 74 kb . Seven genes have been annotated from this 74-kb region and six of them are possible Xa10 candidates . The results of this study will be useful in Xa10 cloning and marker-assisted breeding .
Matching Sentences:
[ Sen. 2, subscore: 1.00 ]: Rice lines that carry resistance ( R ) gene Xa10 confer race-specific resistance to Xoo strains harboring avirulence ( Avr ) gene avrXa10 .
[ Sen. 3, subscore: 1.00 ]: Here we report on genetic study , disease evaluation and fine genetic mapping of the Xa10 gene .
[ Sen. 4, subscore: 1.00 ]: The inheritance of Xa10-mediated resistance to PXO99A ( pHM1avrXa10 ) did not follow typical Mendelian inheritance for single dominant gene in F2 population derived from IR24 x IRBB10 .
[ Sen. 7, subscore: 1.00 ]: A new near-isogenic line ( F3-65-1743 ) of Xa10 in IR24 genetic background was developed and designated as IRBB10A .
[ Sen. 9, subscore: 1.00 ]: Linkage analysis using existing RFLP markers and F2 mapping population mapped the Xa10 locus to the proximal side of E1981S with genetic distance at 0 . 93 cM .
[ Sen. 10, subscore: 1.00 ]: With five new RFLP markers developed from the genomic sequence of Nipponbare , Xa10 was finely mapped at genetic distance of 0 . 28 cM between proximal marker M491 and distal marker M419 and co-segregated with markers S723 and M604 .
[ Sen. 12, subscore: 1.00 ]: Seven genes have been annotated from this 74-kb region and six of them are possible Xa10 candidates .
[ Sen. 13, subscore: 1.00 ]: The results of this study will be useful in Xa10 cloning and marker-assisted breeding .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 6.00
Title: Characterization of Xanthomonas oryzae-responsive cis-acting element in the promoter of rice race-specific susceptibility gene Xa13 .
Author: Yuan T Li X Xiao J Wang S
Journal: Mol Plant Citation: V : 4 P : 300-9 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub21208999 Accession (PMID): 21208999
Abstract: The rice Xa13 gene , whose promoter harbors a UPT ( up-regulated by transcription activator-like [ TAL ] effector ) box , UPT ( PthXo1 ) , plays a pivotal role in the race-specific pathogenicity caused by Xanthomonas oryzae pv . oryzae ( Xoo ) strain PXO99 . PXO99 causes rice disease by inducing Xa13 . It is unknown , however , whether the UPT ( PthXo1 ) box is the only PXO99-responsive cis-regulating elements in the activation of Xa13 expression . We analyzed the expression of a series of end and site-truncated and site-mutated Xa13 promoters in rice and the binding of PXO99 protein to the intact , partial , or site-mutated UPT ( PthXo1 ) boxes . In the Xa13 promoter , UPT ( PthXo1 ) box is the only Xoo-responsive cis-acting element that results in PXO99-induced Xa13 expression . The 5-terminal second , third , and fourth nucleotides of the box are important for bacterial protein binding and gene activation ; mutation of any one of these sites abolished PXO99-induced gene expression . Furthermore , the 3-half of the UPT ( PthXo1 ) box is also required for protein binding and gene activation . These findings will enhance our understanding of the molecular mechanism of the interaction of rice and Xoo via UPT boxes and TAL effectors .
Matching Sentences:
[ Sen. 5, subscore: 2.00 ]: In the Xa13 promoter , UPT ( PthXo1 ) box is the only Xoo-responsive cis-acting element that results in PXO99-induced Xa13 expression .
[ Sen. 1, subscore: 1.00 ]: The rice Xa13 gene , whose promoter harbors a UPT ( up-regulated by transcription activator-like [ TAL ] effector ) box , UPT ( PthXo1 ) , plays a pivotal role in the race-specific pathogenicity caused by Xanthomonas oryzae pv . oryzae ( Xoo ) strain PXO99 .
[ Sen. 2, subscore: 1.00 ]: PXO99 causes rice disease by inducing Xa13 .
[ Sen. 3, subscore: 1.00 ]: It is unknown , however , whether the UPT ( PthXo1 ) box is the only PXO99-responsive cis-regulating elements in the activation of Xa13 expression .
[ Sen. 4, subscore: 1.00 ]: We analyzed the expression of a series of end and site-truncated and site-mutated Xa13 promoters in rice and the binding of PXO99 protein to the intact , partial , or site-mutated UPT ( PthXo1 ) boxes .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 5.00
Title: Genome-wide analysis of defense-responsive genes in bacterial blight resistance of rice mediated by the recessive R gene xa13 .
Author: Chu Z Ouyang Y Zhang J Yang H Wang S
Journal: Mol . Genet . Genomics Citation: V : 271 ( 1 ) P : 111-20 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub14730444 Accession (PMID): 14730444
Abstract: Defense responses triggered by dominant and recessive disease resistance ( R ) genes are presumed to be regulated by different molecular mechanisms . In order to characterize the genes activated in defense responses against bacterial blight mediated by the recessive R gene xa13 , two pathogen-induced subtraction cDNA libraries were constructed using the resistant rice line IRBB13--which carries xa13--and its susceptible , near-isogenic , parental line IR24 . Clustering analysis of expressed sequence tags ( ESTs ) identified 702 unique expressed sequences as being involved in the defense responses triggered by xa13 ; 16% of these are new rice ESTs . These sequences define 702 genes , putatively encoding a wide range of products , including defense-responsive genes commonly involved in different host-pathogen interactions , genes that have not previously been reported to be associated with pathogen-induced defense responses , and genes ( 38% ) with no homology to previously described functional genes . In addition , R-like genes putatively encoding nucleotide-binding site/leucine rich repeat ( NBS-LRR ) and LRR receptor kinase proteins were observed to be induced in the disease resistance activated by xa13 . A total of 568 defense-responsive ESTs were mapped to 588 loci on the rice molecular linkage map through bioinformatic analysis . About 48% of the mapped ESTs co-localized with quantitative trait loci ( QTLs ) for resistance to various rice diseases , including bacterial blight , rice blast , sheath blight and yellow mottle virus . Furthermore , some defense-responsive sequences were conserved at similar locations on different chromosomes . These results reveal the complexity of xa13-mediated resistance . The information obtained in this study provides a large source of candidate genes for understanding the molecular bases of defense responses activated by recessive R genes and of quantitative disease resistance .
Matching Sentences:
[ Sen. 2, subscore: 2.00 ]: In order to characterize the genes activated in defense responses against bacterial blight mediated by the recessive R gene xa13 , two pathogen-induced subtraction cDNA libraries were constructed using the resistant rice line IRBB13--which carries xa13--and its susceptible , near-isogenic , parental line IR24 .
[ Sen. 3, subscore: 1.00 ]: Clustering analysis of expressed sequence tags ( ESTs ) identified 702 unique expressed sequences as being involved in the defense responses triggered by xa13 ; 16% of these are new rice ESTs .
[ Sen. 5, subscore: 1.00 ]: In addition , R-like genes putatively encoding nucleotide-binding site/leucine rich repeat ( NBS-LRR ) and LRR receptor kinase proteins were observed to be induced in the disease resistance activated by xa13 .
[ Sen. 9, subscore: 1.00 ]: These results reveal the complexity of xa13-mediated resistance .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 5.00
Title: Promoter mutations of an essential gene for pollen development result in disease resistance in rice .
Author: Chu Z Yuan M Yao J Ge X Yuan B Xu C Li X Fu B Li Z Bennetzen JL Zhang Q Wang S
Journal: Genes Dev . Citation: V : 20 ( 10 ) P : 1250-5 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub16648463 Accession (PMID): 16648463
Abstract: Disease resistance and sexual reproductive development are generally considered as separate biological processes , regulated by different sets of genes . Here we show that xa13 , a recessive allele conferring disease resistance against bacterial blight , one of the most devastating rice diseases worldwide , plays a key role in both disease resistance and pollen development . The dominant allele , Xa13 , is required for both bacterial growth and pollen development . Promoter mutations in Xa13 cause down-regulation of expression during host-pathogen interaction , resulting in the fully recessive xa13 that confers race-specific resistance . The recessive xa13 allele represents a new type of plant disease resistance .
Matching Sentences:
[ Sen. 4, subscore: 2.00 ]: Promoter mutations in Xa13 cause down-regulation of expression during host-pathogen interaction , resulting in the fully recessive xa13 that confers race-specific resistance .
[ Sen. 2, subscore: 1.00 ]: Here we show that xa13 , a recessive allele conferring disease resistance against bacterial blight , one of the most devastating rice diseases worldwide , plays a key role in both disease resistance and pollen development .
[ Sen. 3, subscore: 1.00 ]: The dominant allele , Xa13 , is required for both bacterial growth and pollen development .
[ Sen. 5, subscore: 1.00 ]: The recessive xa13 allele represents a new type of plant disease resistance .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 5.00
Title: The bacterial pathogen Xanthomonas oryzae overcomes rice defenses by regulating host copper redistribution .
Author: Yuan M Chu Z Li X Xu C Wang S
Journal: Plant Cell Citation: V : 22 P : 3164-76 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub20852017 Accession (PMID): 20852017
Abstract: Pathogen effectors are virulence factors causing plant diseases . How the host targets of these effectors facilitate pathogen infection is largely unknown . An effector of Xanthomonas oryzae pv oryzae ( Xoo ) transcriptionally activates rice ( Oryza sativa ) susceptibility gene Xa13 to cause bacterial blight disease . Xa13 encodes an indispensable plasma membrane protein of the MtN3/saliva family , which is prevalent in eukaryotes with unknown biochemical function . We show that the XA13 protein cooperates with two other proteins , COPT1 and COPT5 , to promote removal of copper from xylem vessels , where Xoo multiplies and spreads to cause disease . Copper , an essential micronutrient of plants and an important element for a number of pesticides in agriculture , suppresses Xoo growth . Xoo strain PXO99 is more sensitive to copper than other strains ; its infection of rice is associated with activation of XA13 , COPT1 , and COPT5 , which modulate copper redistribution in rice . The involvement of XA13 in copper redistribution has led us to propose a mechanism of bacterial virulence .
Matching Sentences:
[ Sen. 3, subscore: 1.00 ]: An effector of Xanthomonas oryzae pv oryzae ( Xoo ) transcriptionally activates rice ( Oryza sativa ) susceptibility gene Xa13 to cause bacterial blight disease .
[ Sen. 4, subscore: 1.00 ]: Xa13 encodes an indispensable plasma membrane protein of the MtN3/saliva family , which is prevalent in eukaryotes with unknown biochemical function .
[ Sen. 5, subscore: 1.00 ]: We show that the XA13 protein cooperates with two other proteins , COPT1 and COPT5 , to promote removal of copper from xylem vessels , where Xoo multiplies and spreads to cause disease .
[ Sen. 7, subscore: 1.00 ]: Xoo strain PXO99 is more sensitive to copper than other strains ; its infection of rice is associated with activation of XA13 , COPT1 , and COPT5 , which modulate copper redistribution in rice .
[ Sen. 8, subscore: 1.00 ]: The involvement of XA13 in copper redistribution has led us to propose a mechanism of bacterial virulence .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 5.00
Title: Gene silencing using the recessive rice bacterial blight resistance gene xa13 as a new paradigm in plant breeding .
Author: Li C Wei J Lin Y Chen H
Journal: Plant Cell Rep Citation: V : 31 P : 851-62 Type: In-Process
Literature: oryza Field: abstract Doc ID: pub22218673 Accession (PMID): 22218673
Abstract: Resistant germplasm resources are valuable for developing resistant varieties in agricultural production . However , recessive resistance genes are usually overlooked in hybrid breeding . Compared with dominant traits , however , they may confer resistance to different pathogenic races or pest biotypes with different mechanisms of action . The recessive rice bacterial blight resistance gene xa13 , also involved in pollen development , has been cloned and its resistance mechanism has been recently characterized . This report describes the conversion of bacterial blight resistance mediated by the recessive xa13 gene into a dominant trait to facilitate its use in a breeding program . This was achieved by knockdown of the corresponding dominant allele Xa13 in transgenic rice using recently developed artificial microRNA technology . Tissue-specific promoters were used to exclude most of the expression of artificial microRNA in the anther to ensure that Xa13 functioned normally during pollen development . A battery of highly bacterial blight resistant transgenic plants with normal seed setting rates were acquired , indicating that highly specific gene silencing had been achieved . Our success with xa13 provides a paradigm that can be adapted to other recessive resistance genes .
Matching Sentences:
[ Sen. 4, subscore: 1.00 ]: The recessive rice bacterial blight resistance gene xa13 , also involved in pollen development , has been cloned and its resistance mechanism has been recently characterized .
[ Sen. 5, subscore: 1.00 ]: This report describes the conversion of bacterial blight resistance mediated by the recessive xa13 gene into a dominant trait to facilitate its use in a breeding program .
[ Sen. 6, subscore: 1.00 ]: This was achieved by knockdown of the corresponding dominant allele Xa13 in transgenic rice using recently developed artificial microRNA technology .
[ Sen. 7, subscore: 1.00 ]: Tissue-specific promoters were used to exclude most of the expression of artificial microRNA in the anther to ensure that Xa13 functioned normally during pollen development .
[ Sen. 9, subscore: 1.00 ]: Our success with xa13 provides a paradigm that can be adapted to other recessive resistance genes .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 5.00
Title: Expression of Xa1 , a bacterial blight-resistance gene in rice , is induced by bacterial inoculation .
Author: Yoshimura S Yamanouchi U Katayose Y Toki S Wang ZX Kono I Kurata N Yano M Iwata N Sasaki T
Journal: Proc . Natl . Acad . Sci . USA Citation: V : 95 ( 4 ) P : 1663-8 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub9465073 Accession (PMID): 9465073
Abstract: The Xa1 gene in rice confers resistance to Japanese race 1 of Xanthomonas oryzae pv . oryzae , the causal pathogen of bacterial blight ( BB ) . We isolated the Xa1 gene by a map-based cloning strategy . The deduced amino acid sequence of the Xa1 gene product contains nucleotide binding sites ( NBS ) and a new type of leucine-rich repeats ( LRR ) ; thus , Xa1 is a member of the NBS-LRR class of plant disease-resistance genes , but quite different from Xa21 , another BB-resistance gene isolated from rice . Interestingly , Xa1 gene expression was induced on inoculation with a bacterial pathogen and wound , unlike other isolated resistance genes in plants , which show constitutive expression . The induced expression may be involved in enhancement of resistance against the pathogen .
Matching Sentences:
[ Sen. 3, subscore: 2.00 ]: The deduced amino acid sequence of the Xa1 gene product contains nucleotide binding sites ( NBS ) and a new type of leucine-rich repeats ( LRR ) ; thus , Xa1 is a member of the NBS-LRR class of plant disease-resistance genes , but quite different from Xa21 , another BB-resistance gene isolated from rice .
[ Sen. 1, subscore: 1.00 ]: The Xa1 gene in rice confers resistance to Japanese race 1 of Xanthomonas oryzae pv . oryzae , the causal pathogen of bacterial blight ( BB ) .
[ Sen. 2, subscore: 1.00 ]: We isolated the Xa1 gene by a map-based cloning strategy .
[ Sen. 4, subscore: 1.00 ]: Interestingly , Xa1 gene expression was induced on inoculation with a bacterial pathogen and wound , unlike other isolated resistance genes in plants , which show constitutive expression .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 4.00
Title: Targeting xa13 , a recessive gene for bacterial blight resistance in rice .
Author: Chu Z Fu B Yang H Xu C Li Z Sanchez A Park YJ Bennetzen JL Zhang Q Wang S
Journal: Theor . Appl . Genet . Citation: V : 112 ( 3 ) P : 455-61 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub16328230 Accession (PMID): 16328230
Abstract: Bacterial blight , caused by Xanthomonas oryzae pv . oryzae ( Xoo ) , is one of the most serious diseases of rice worldwide . Thirty bacterial blight resistance ( R ) genes ( 21 dominant genes and 9 recessive genes ) in rice have been identified . They are the main sources for the genetic improvement of rice for resistance to Xoo . However , little is known about the recessive R genes . To clone and characterize the recessive R genes , we fine-mapped xa13 , a fully recessive gene for Xoo resistance , to a DNA fragment of 14 . 8 kb using the map-based cloning strategy and a series of sequence-based molecular markers . Sequence analysis of this fragment indicated that this region contains only two apparently intact candidate genes ( an extensin-like gene and a homologue of nodulin MtN3 ) and the 5 end of a predicted hypothetical gene . These results will greatly facilitate the isolation and characterization of xa13 . Four PCR-based markers , E6a , SR6 , ST9 and SR11 that were tightly linked to the xa13 locus , were also developed . These markers will be useful tools for the marker-assisted selection of xa13 in breeding programs .
Matching Sentences:
[ Sen. 5, subscore: 1.00 ]: To clone and characterize the recessive R genes , we fine-mapped xa13 , a fully recessive gene for Xoo resistance , to a DNA fragment of 14 . 8 kb using the map-based cloning strategy and a series of sequence-based molecular markers .
[ Sen. 7, subscore: 1.00 ]: These results will greatly facilitate the isolation and characterization of xa13 .
[ Sen. 8, subscore: 1.00 ]: Four PCR-based markers , E6a , SR6 , ST9 and SR11 that were tightly linked to the xa13 locus , were also developed .
[ Sen. 9, subscore: 1.00 ]: These markers will be useful tools for the marker-assisted selection of xa13 in breeding programs .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 4.00
Title: Detection of bacterial blight resistance genes in basmati rice landraces .
Author: Ullah I Jamil S Iqbal MZ Shaheen HL Hasni SM Jabeen S Mehmood A Akhter M
Journal: Genet Mol Res Citation: V : 11 P : 1960-6 Type: In-Data-Review
Literature: oryza Field: abstract Doc ID: pub22869552 Accession (PMID): 22869552
Abstract: Aromatic basmati rice is vulnerable to bacterial blight disease . Genes conferring resistance to bacterial blight have been identified in coarse rice ; however , their incorporation into basmati varieties compromises the prized basmati aroma . We identified bacterial blight resistance genes Xa4 , xa5 , Xa7 , and xa13 in 52 basmati landraces and five basmati cultivars using PCR markers . The Xa7 gene was found to be the most prevalent among the cultivars and landraces . The cultivars Basmati-385 and Basmati-2000 also contained the Xa4 gene ; however , xa5 and xa13 were confined to landraces only . Ten landraces were found to have multiple resistance genes . Landraces Basmati-106 , Basmati-189 and Basmati-208 contained Xa4 and Xa7 genes . Whereas , landraces Basmati-122 , Basmati-427 , Basmati-433 were observed to have xa5 and Xa7 genes . Landraces Basmati-48 , Basmati-51A , Basmati-334 , and Basmati-370A possessed Xa7 and xa13 genes . The use of landraces containing recessive genes xa5 and xa13 as donor parents in hybridization with cultivars Basmati-385 and Basmati-2000 , which contain the genes Xa4 and Xa7 , will expedite efforts to develop bacterial blight-resistant basmati rice cultivars through marker assisted selection , based on a pyramiding approach , without compromising aroma and grain quality .
Matching Sentences:
[ Sen. 3, subscore: 1.00 ]: We identified bacterial blight resistance genes Xa4 , xa5 , Xa7 , and xa13 in 52 basmati landraces and five basmati cultivars using PCR markers .
[ Sen. 5, subscore: 1.00 ]: The cultivars Basmati-385 and Basmati-2000 also contained the Xa4 gene ; however , xa5 and xa13 were confined to landraces only .
[ Sen. 9, subscore: 1.00 ]: Landraces Basmati-48 , Basmati-51A , Basmati-334 , and Basmati-370A possessed Xa7 and xa13 genes .
[ Sen. 10, subscore: 1.00 ]: The use of landraces containing recessive genes xa5 and xa13 as donor parents in hybridization with cultivars Basmati-385 and Basmati-2000 , which contain the genes Xa4 and Xa7 , will expedite efforts to develop bacterial blight-resistant basmati rice cultivars through marker assisted selection , based on a pyramiding approach , without compromising aroma and grain quality .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Goto:

© Textpresso Fri Mar 29 01:34:56 2024 .