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29 matches found in 12 documents. Search time: 0.009 seconds.
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Score: 14.00
Title: DNA polymorphism in the blast disease resistance gene Pita of the wild rice Oryza rufipogon and its related species .
Author: Yoshida K Miyashita NT
Journal: Genes Genet Syst Citation: V : 84 P : 121-36 Year: 2009 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub19556706
Abstract: Intra-and interspecific DNA variations in the blast resistance gene Pita in wild rice ( Oryza rufipogon ) , cultivated rice ( O sativa ) , and two other related wild rice species ( O meridionalis and O officinalis ) were analyzed to elucidate the nucleotide polymorphism maintenance mechanisms and evolution of Pita in these species . Nucleotide diversity at silent sites of O rufipogon Pita was 0 . 0101 , an intermediate value relative to other O rufipogon nuclear genes . A dimorphic pattern of nucleotide polymorphism was detected in the O rufipogon Pita region . Inoculation of the blast fungus Magnaporthe oryzae verified that the O rufipogon Pita gene resides in a dimorphic sequence type . The resistance Pita allele had lower levels of variation than the susceptibility pita allele . A hypothesis of evolutionary relationships indicated that the amino acid mutation in the O rufipogon Pita protein responsible for the difference between resistance and susceptibility occurred relatively recently . These results suggested that the resistance Pita originated from the susceptibility pita . Nucleotide diversity at replacement sites of the leucine-rich domain ( LRD ) of both the resistance and susceptibility O rufipogon pita was low . In tests of neutrality , significantly negative values were detected for the LRD of O rufipogon susceptibility pita . The low nucleotide diversity at replacement sites of the LRD of the susceptibility pita could be explained by purifying selection . Comparison of Pita between O rufipogon and O officinalis revealed an excess of nonconservative amino acid substitutions in the LRD , which could be related to the host-pathogen interaction .
Matching Sentences:
[ Sen. 1, subscore: 2.00 ]: Intra-and interspecific DNA variations in the blast resistance gene Pita in wild rice ( Oryza rufipogon ) , cultivated rice ( O sativa ) , and two other related wild rice species ( O meridionalis and O officinalis ) were analyzed to elucidate the nucleotide polymorphism maintenance mechanisms and evolution of Pita in these species .
[ Sen. 5, subscore: 2.00 ]: The resistance Pita allele had lower levels of variation than the susceptibility pita allele .
[ Sen. 7, subscore: 2.00 ]: These results suggested that the resistance Pita originated from the susceptibility pita .
[ Sen. 2, subscore: 1.00 ]: Nucleotide diversity at silent sites of O rufipogon Pita was 0 . 0101 , an intermediate value relative to other O rufipogon nuclear genes .
[ Sen. 3, subscore: 1.00 ]: A dimorphic pattern of nucleotide polymorphism was detected in the O rufipogon Pita region .
[ Sen. 4, subscore: 1.00 ]: Inoculation of the blast fungus Magnaporthe oryzae verified that the O rufipogon Pita gene resides in a dimorphic sequence type .
[ Sen. 6, subscore: 1.00 ]: A hypothesis of evolutionary relationships indicated that the amino acid mutation in the O rufipogon Pita protein responsible for the difference between resistance and susceptibility occurred relatively recently .
[ Sen. 8, subscore: 1.00 ]: Nucleotide diversity at replacement sites of the leucine-rich domain ( LRD ) of both the resistance and susceptibility O rufipogon pita was low .
[ Sen. 9, subscore: 1.00 ]: In tests of neutrality , significantly negative values were detected for the LRD of O rufipogon susceptibility pita .
[ Sen. 10, subscore: 1.00 ]: The low nucleotide diversity at replacement sites of the LRD of the susceptibility pita could be explained by purifying selection .
[ Sen. 11, subscore: 1.00 ]: Comparison of Pita between O rufipogon and O officinalis revealed an excess of nonconservative amino acid substitutions in the LRD , which could be related to the host-pathogen interaction .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 4.00
Title: Development of PCR-based allele-specific and InDel marker sets for nine rice blast resistance genes .
Author: Hayashi K Yoshida H Ashikawa I
Journal: Citation: V : ( ) P : Year: 2006 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub16673143
Abstract: Blast resistance is one of the most important traits in rice breeding , and application of molecular markers for blast resistance breeding is likely to allow the rapid screening for the trait during early growth stages , without the need for inoculation of pathogen and phenotyping . Allele-specific PCR markers and insertion/deletion ( InDel ) markers , which genotype single-nucleotide polymorphisms and InDel polymorphisms , respectively , are useful tools for marker-assisted selections . We developed sets of allele-specific PCR and InDel markers for nine rice blast resistance genes-Piz , Piz-t , Pit , Pik , Pik-m , Pik-p , Pita , Pita-2 , and Pib-which are commonly used in Japanese blast resistance rice breeding programs . For each resistance gene , we used the segregation information from thousands of progeny in several crosses or published gene locations to generate a marker that cosegregated with the gene and markers that closely flanked the gene on either side . The developed cosegregating markers uniquely discriminated among each of the lines with the individual resistance genes ( except for Pita and Pita-2 ) . Therefore , these markers will likely facilitate the development of multiline cultivars carrying one or a combination of these nine blast resistance genes . In addition , the systems we developed may be valuable tools in the quality control of seed production from blast-resistant multiline cultivars .
Matching Sentences:
[ Sen. 3, subscore: 2.00 ]: We developed sets of allele-specific PCR and InDel markers for nine rice blast resistance genes-Piz , Piz-t , Pit , Pik , Pik-m , Pik-p , Pita , Pita-2 , and Pib-which are commonly used in Japanese blast resistance rice breeding programs .
[ Sen. 5, subscore: 2.00 ]: The developed cosegregating markers uniquely discriminated among each of the lines with the individual resistance genes ( except for Pita and Pita-2 ) .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 4.00
Title: Development of PCR-based allele-specific and InDel marker sets for nine rice blast resistance genes .
Author: Hayashi K Yoshida H Ashikawa I
Journal: Theor . Appl . Genet . Citation: V : 113 ( 2 ) P : 251-60 Year: 2006 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub16791691
Abstract: Blast resistance is one of the most important traits in rice breeding , and application of molecular markers for blast resistance breeding is likely to allow the rapid screening for the trait during early growth stages , without the need for inoculation of pathogen and phenotyping . Allele-specific PCR markers and insertion/deletion ( InDel ) markers , which genotype single-nucleotide polymorphisms and InDel polymorphisms , respectively , are useful tools for marker-assisted selections . We developed sets of allele-specific PCR and InDel markers for nine rice blast resistance genes -- Piz , Piz-t , Pit , Pik , Pik-m , Pik-p , Pita , Pita-2 , and Pib -- which are commonly used in Japanese blast resistance rice breeding programs . For each resistance gene , we used the segregation information from thousands of progeny in several crosses or published gene locations to generate a marker that cosegregated with the gene and markers that closely flanked the gene on either side . The developed cosegregating markers uniquely discriminated among each of the lines with the individual resistance genes ( except for Pita and Pita-2 ) . Therefore , these markers will likely facilitate the development of multiline cultivars carrying one or a combination of these nine blast resistance genes . In addition , the systems we developed may be valuable tools in the quality control of seed production from blast-resistant multiline cultivars .
Matching Sentences:
[ Sen. 3, subscore: 2.00 ]: We developed sets of allele-specific PCR and InDel markers for nine rice blast resistance genes -- Piz , Piz-t , Pit , Pik , Pik-m , Pik-p , Pita , Pita-2 , and Pib -- which are commonly used in Japanese blast resistance rice breeding programs .
[ Sen. 5, subscore: 2.00 ]: The developed cosegregating markers uniquely discriminated among each of the lines with the individual resistance genes ( except for Pita and Pita-2 ) .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 4.00
Title: Multiple translocation of the AVR-Pita effector gene among chromosomes of the rice blast fungus Magnaporthe oryzae and related species .
Author: Chuma I Isobe C Hotta Y Ibaragi K Futamata N Kusaba M Yoshida K Terauchi R Fujita Y Nakayashiki H Valent B Tosa Y
Journal: PLoS Pathog Citation: V : 7 P : e1002147 Year: 2011 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub21829350
Abstract: Magnaporthe oryzae is the causal agent of rice blast disease , a devastating problem worldwide . This fungus has caused breakdown of resistance conferred by newly developed commercial cultivars . To address how the rice blast fungus adapts itself to new resistance genes so quickly , we examined chromosomal locations of AVR-Pita , a subtelomeric gene family corresponding to the Pita resistance gene , in various isolates of M oryzae ( including wheat and millet pathogens ) and its related species . We found that AVR-Pita ( AVR-Pita1 and AVR-Pita2 ) is highly variable in its genome location , occurring in chromosomes 1 , 3 , 4 , 5 , 6 , 7 , and supernumerary chromosomes , particularly in rice-infecting isolates . When expressed in M oryzae , most of the AVR-Pita homologs could elicit Pita-mediated resistance , even those from non-rice isolates . AVR-Pita was flanked by a retrotransposon , which presumably contributed to its multiple translocation across the genome . On the other hand , family member AVR-Pita3 , which lacks avirulence activity , was stably located on chromosome 7 in a vast majority of isolates . These results suggest that the diversification in genome location of AVR-Pita in the rice isolates is a consequence of recognition by Pita in rice . We propose a model that the multiple translocation of AVR-Pita may be associated with its frequent loss and recovery mediated by its transfer among individuals in asexual populations . This model implies that the high mobility of AVR-Pita is a key mechanism accounting for the rapid adaptation toward Pita . Dynamic adaptation of some fungal plant pathogens may be achieved by deletion and recovery of avirulence genes using a population as a unit of adaptation .
Matching Sentences:
[ Sen. 3, subscore: 1.00 ]: To address how the rice blast fungus adapts itself to new resistance genes so quickly , we examined chromosomal locations of AVR-Pita , a subtelomeric gene family corresponding to the Pita resistance gene , in various isolates of M oryzae ( including wheat and millet pathogens ) and its related species .
[ Sen. 5, subscore: 1.00 ]: When expressed in M oryzae , most of the AVR-Pita homologs could elicit Pita-mediated resistance , even those from non-rice isolates .
[ Sen. 8, subscore: 1.00 ]: These results suggest that the diversification in genome location of AVR-Pita in the rice isolates is a consequence of recognition by Pita in rice .
[ Sen. 10, subscore: 1.00 ]: This model implies that the high mobility of AVR-Pita is a key mechanism accounting for the rapid adaptation toward Pita .
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Score: 3.00
Title: One of two major paralogs of AVR-Pita1 is functional in Japanese rice blast isolates .
Author: Takahashi M Ashizawa T Hirayae K Moriwaki J Sone T Sonoda R Noguchi MT Nagashima S Ishikawa K Arai M
Journal: Phytopathology Citation: V : 100 P : 612-8 Year: 2010 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub20465417
Abstract: We analyzed the avirulence gene AVR-Pita1 in Japanese rice blast isolates to determine how they gain virulence toward rice cultivars containing the Pita resistance gene . An avirulent isolate , OS99-G-7a ( G7a ) , from a Japanese commercial field contained two paralogs of AVR-Pita1 , designated as AVR-Pita1 ( JA ) and AVR-Pita1 ( JB ) . Analysis of virulent , independent mutants derived from G7a , a single avirulent progenitor strain , indicated that AVR-Pita1 ( JA ) was functional but AVR-Pita1 ( JB ) was nonfunctional The most frequent mutation was loss of AVR-Pita1 ( JA ) . Analyses of field isolates collected from diverse areas in Japan revealed that most of the AVR-Pita1 genes carried by Japanese isolates were identical to AVR-Pita1 ( JA ) or AVR-Pita1 ( JB ) . The relationship between these major paralogs in Japanese isolates and the virulence of the strains carrying them indicate that AVR-Pita1 ( JA ) is functional but AVR-Pita1 ( JB ) is not , as is the case in G7a . Isolates that show virulence toward rice cultivars containing the Pita gene are presumed to have evolved virulence from avirulent origins via loss of AVR-Pita1 ( JA ) , except for one case in which virulence resulted from a base substitution . In this study , we discuss the properties and specificities of Japanese rice blasts that relate to virulence against Pita-containing rice . Furthermore , we present a method to amplify AVR-Pita1 ( JA ) and AVR-Pita1 ( JB ) separately and , specifically , to monitor functional AVR-Pita1 in Japan .
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: We analyzed the avirulence gene AVR-Pita1 in Japanese rice blast isolates to determine how they gain virulence toward rice cultivars containing the Pita resistance gene .
[ Sen. 6, subscore: 1.00 ]: Isolates that show virulence toward rice cultivars containing the Pita gene are presumed to have evolved virulence from avirulent origins via loss of AVR-Pita1 ( JA ) , except for one case in which virulence resulted from a base substitution .
[ Sen. 7, subscore: 1.00 ]: In this study , we discuss the properties and specificities of Japanese rice blasts that relate to virulence against Pita-containing rice .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: The in silico map-based cloning of Pi36 , a rice coiled-coil nucleotide-binding site leucine-rich repeat gene that confers race-specific resistance to the blast fungus .
Author: Liu X Lin F Wang L Pan Q
Journal: Genetics Citation: V : 176 P : Sep-41 Year: 2007 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub17507669
Abstract: The indica rice variety Kasalath carries Pi36 , a gene that determines resistance to Chinese isolates of rice blast and that has been located to a 17-kb interval on chromosome 8 . The genomic sequence of the reference japonica variety Nipponbare was used for an in silico prediction of the resistance ( R ) gene content of the interval and hence for the identification of candidate gene ( s ) for Pi36 . Three such sequences , which all had both a nucleotide-binding site and a leucine-rich repeat motif , were present . The three candidate genes were amplified from the genomic DNA of a number of varieties by long-range PCR , and the resulting amplicons were inserted into pCAMBIA1300 and/or pYLTAC27 vectors to determine sequence polymorphisms correlated to the resistance phenotype and to perform transgenic complementation tests . Constructs containing each candidate gene were transformed into the blast-susceptible variety Q1063 , which allowed the identification of Pi36-3 as the functional gene , with the other two candidates being probable pseudogenes . The Pi36-encoded protein is composed of 1056 amino acids , with a single substitution event ( Asp to Ser ) at residue 590 associated with the resistant phenotype . Pi36 is a single-copy gene in rice and is more closely related to the barley powdery mildew resistance genes Mla1 and Mla6 than to the rice blast R genes Pita , Pib , Pi9 , and Piz-t . An RT-PCR analysis showed that Pi36 is constitutively expressed in Kasalath .
Matching Sentences:
[ Sen. 7, subscore: 1.00 ]: Pi36 is a single-copy gene in rice and is more closely related to the barley powdery mildew resistance genes Mla1 and Mla6 than to the rice blast R genes Pita , Pib , Pi9 , and Piz-t .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: The blast resistance gene Pi37 encodes a nucleotide binding site leucine-rich repeat protein and is a member of a resistance gene cluster on rice chromosome 1 .
Author: Lin F Chen S Que Z Wang L Liu X Pan Q
Journal: Genetics Citation: V : 177 P : 1871-80 Year: 2007 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub17947408
Abstract: The resistance ( R ) gene Pi37 , present in the rice cultivar St No 1 , was isolated by an in silico map-based cloning procedure . The equivalent genetic region in Nipponbare contains four nucleotide binding site-leucine-rich repeat ( NBS-LRR ) type loci . These four candidates for Pi37 ( Pi37-1 , -2 , -3 , and -4 ) were amplified separately from St No 1 via long-range PCR , and cloned into a binary vector . Each construct was individually transformed into the highly blast susceptible cultivar Q1063 . The subsequent complementation analysis revealed Pi37-3 to be the functional gene , while -1 , -2 , and -4 are probably pseudogenes . Pi37 encodes a 1290 peptide NBS-LRR product , and the presence of substitutions at two sites in the NBS region ( V239A and I247M ) is associated with the resistance phenotype . Semiquantitative expression analysis showed that in St No 1 , Pi37 was constitutively expressed and only slightly induced by blast infection . Transient expression experiments indicated that the Pi37 product is restricted to the cytoplasm . Pi37-3 is thought to have evolved recently from -2 , which in turn was derived from an ancestral -1 sequence . Pi37-4 is likely the most recently evolved member of the cluster and probably represents a duplication of -3 . The four Pi37 paralogs are more closely related to maize rp1 than to any of the currently isolated rice blast R genes Pita , Pib , Pi9 , Pi2 , Piz-t , and Pi36 .
Matching Sentences:
[ Sen. 11, subscore: 1.00 ]: The four Pi37 paralogs are more closely related to maize rp1 than to any of the currently isolated rice blast R genes Pita , Pib , Pi9 , Pi2 , Piz-t , and Pi36 .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: [ Cloning and analyzing of rice blast resistance gene Pi-ta+ allele from Jinghong erect type of common wild rice ( Oryza rufipogon Griff ) in Yunnan ]
Author: Geng XS Yang MZ Huang XQ Cheng ZQ Fu J Sun T Li J
Journal: Yi Chuan Citation: V : 30 P : 109-14 Year: 2008 Type: In-Process
Literature: oryza Field: abstract Doc ID: pub18244911
Abstract: A 4 , 672 bp DNA sequence including the whole coding region and partial non-coding region of rice blast resistance gene Pi-ta+ has been cloned from Jinghong erect type of common wild rice ( Oryza rufipogon Griff ) in Yunnan by polymerase chain reaction method . The coding region shares 99 . 86% and 98 . 78% identity with the corresponding regions of the reported cultivated rice Yashiro-mochi and Yuanjiang type of common wild rice respectively . There are 4 nucleotides difference in the coding region and 6 in intron of the cloned Pi-ta+ gene , compared with Pi-ta from Yashiro-mochi . Pi-ta+ gene in Jinghong erect type of common wild rice has been proved to be a rare existing Pi-ta+ allele , because there was a alanine rather than a serine at the position 918 within the predicted amino acid sequence of PITA . Pi-ta+ allele can cause disease resistance response to rice blast pathogens in plant cells . Differences in DNA sequence , deduced amino acid sequence and antibacterial spectrum may make the Pi-ta+ allele new resistant characteristics . Finding and cloning of Pi-ta+ allele from Jinghong erect type of common wild rice in Yunnan provides a basement for further utilization of the wild rice resources .
Matching Sentences:
[ Sen. 4, subscore: 1.00 ]: Pi-ta+ gene in Jinghong erect type of common wild rice has been proved to be a rare existing Pi-ta+ allele , because there was a alanine rather than a serine at the position 918 within the predicted amino acid sequence of PITA .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: Development of near-isogenic Japonica rice lines with enhanced resistance to Magnaporthe grisea .
Author: Kwon SW Cho YC Kim YG Suh JP Jeung JU Roh JH Lee SK Jeon JS Yang SJ Lee YT
Journal: Mol Cells Citation: V : 25 P : 407-16 Year: 2008 Type: In-Process
Literature: oryza Field: abstract Doc ID: pub18443412
Abstract: Thirteen near-isogenic lines ( NILs ) of japonica rice were developed via a backcross method using the recurrent parent Chucheong , which is of good eating quality but is susceptible to Magnaporthe grisea , and three blast resistant japonica donors , Seolak , Daeseong and Bongkwang . The agro-morphological traits of these NILs , such as heading date , culm length , and panicle length , were similar to those of Chucheong . In a genome-wide scan using 158 SSR markers , chromosome segments of Chucheong were identified in most polymorphic regions of the 13 NIL plants , and only a few chromosome segments were found to have been substituted by donor alleles . The genetic similarities of the 13 NILs to the recurrent parent Chucheong averaged 0 . 961 , with a range of 0 . 932-0 . 984 . Analysis of 13 major blast resistance ( R ) genes in these lines using specific DNA markers showed that each NIL appeared to contain some combination of the four R genes , Pib , Pii , Pik-m and Pita-2 , with the first three genes being present in each line . Screening of nine M grisea isolates revealed that one NIL M7 was resistant to all nine isolates ; the remaining NILs were each resistant to between three and seven isolates , except for NIL M106 , which was resistant to only two isolates . In a blast nursery experiment , all the NILs proved to be more resistant than Chucheong . These newly developed NILs have potential as commercial rice varieties because of their increased resistance to M grisea combined with the desirable agronomic traits of Chucheong . They also provide material for studying the genetic basis of blast resistance .
Matching Sentences:
[ Sen. 5, subscore: 1.00 ]: Analysis of 13 major blast resistance ( R ) genes in these lines using specific DNA markers showed that each NIL appeared to contain some combination of the four R genes , Pib , Pii , Pik-m and Pita-2 , with the first three genes being present in each line .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: Identification of the rice blast resistance gene Pib in the National Small Grains Collection .
Author: Roychowdhury M Jia Y Jia MH Fjellstrom R Cartwright RD
Journal: Phytopathology Citation: V : 102 P : 700-6 Year: 2012 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub22667447
Abstract: The Pib gene in rice confers resistance to a wide range of races of the rice blast pathogen , Magnaporthe oryzae , including race IE1k that overcomes Pita , another broad-spectrum resistance gene . In this study , the presence of Pib was determined in 164 rice germplasm accessions from a core subset of the National Small Grains Collection utilizing DNA markers and pathogenicity assays . The presence of Pib was evaluated with two simple sequence repeat ( SSR ) markers and a dominant marker ( Pib-dom ) derived from the Pib gene sequence . Pathogenicity assays using two avirulent races ( IE1k and IB1 ) and a virulent race ( IB54 ) were performed to verify the resistance responses of accessions . Of the 164 accessions evaluated , 109 contained the Pib gene as determined using both SSR markers and pathogenicity assays , albeit different haplotypes were detected . The remaining 52 germplasm accessions were different in their responses to the blast races IB54 , IE1k , and IB1 , thus indicating the presence of R gene ( s ) other than Pib . The accessions characterized in this study could be used for marker-assisted breeding to improve blast resistance in indica and japonica cultivars worldwide .
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: The Pib gene in rice confers resistance to a wide range of races of the rice blast pathogen , Magnaporthe oryzae , including race IE1k that overcomes Pita , another broad-spectrum resistance gene .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: TAK , an HIV Tat-associated kinase , is a member of the cyclin-dependent family of protein kinases and is induced by activation of peripheral blood lymphocytes and differentiation of promonocytic cell lines .
Author: Yang X Gold MO Tang DN Lewis DE Aguilar-Cordova E Rice AP Herrmann CH .
Journal: Proc . Natl . Acad . Sci . USA Citation: V : 94 ( 23 ) P : 12331-6 Year: 1997 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub9356449
Abstract: We have previously identified a cellular protein kinase activity termed TAK that specifically associates with the HIV types 1 and 2 Tat proteins . TAK hyperphosphorylates the carboxyl-terminal domain of the large subunit of RNA polymerase II in vitro in a manner believed to activate transcription [ Herrmann , C H & Rice , A P ( 1995 ) J Virol . 69 , 1612-1620 ] . We show here that the catalytic subunit of TAK is a known human kinase previously named PITALRE , which is a member of the cyclin-dependent family of proteins . We also show that TAK activity is elevated upon activation of peripheral blood mononuclear cells and peripheral blood lymphocytes and upon differentiation of U1 and U937 promonocytic cell lines to macrophages . Therefore , in HIV-infected individuals TAK may be induced in T cells following activation and in macrophages following differentiation , thus contributing to high levels of viral transcription and the escape from latency of transcriptionally silent proviruses .
Matching Sentences:
[ Sen. 4, subscore: 1.00 ]: We show here that the catalytic subunit of TAK is a known human kinase previously named PITALRE , which is a member of the cyclin-dependent family of proteins .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: DNA polymorphism in the blast disease resistance gene Pita of the wild rice Oryza rufipogon and its related species .
Author: Yoshida K Miyashita NT
Journal: Genes Genet Syst Citation: V : 84 P : 121-36 Year: 2009 Type: MEDLINE
Literature: oryza Field: title Doc ID: pub19556706
Abstract: Intra-and interspecific DNA variations in the blast resistance gene Pita in wild rice ( Oryza rufipogon ) , cultivated rice ( O sativa ) , and two other related wild rice species ( O meridionalis and O officinalis ) were analyzed to elucidate the nucleotide polymorphism maintenance mechanisms and evolution of Pita in these species . Nucleotide diversity at silent sites of O rufipogon Pita was 0 . 0101 , an intermediate value relative to other O rufipogon nuclear genes . A dimorphic pattern of nucleotide polymorphism was detected in the O rufipogon Pita region . Inoculation of the blast fungus Magnaporthe oryzae verified that the O rufipogon Pita gene resides in a dimorphic sequence type . The resistance Pita allele had lower levels of variation than the susceptibility pita allele . A hypothesis of evolutionary relationships indicated that the amino acid mutation in the O rufipogon Pita protein responsible for the difference between resistance and susceptibility occurred relatively recently . These results suggested that the resistance Pita originated from the susceptibility pita . Nucleotide diversity at replacement sites of the leucine-rich domain ( LRD ) of both the resistance and susceptibility O rufipogon pita was low . In tests of neutrality , significantly negative values were detected for the LRD of O rufipogon susceptibility pita . The low nucleotide diversity at replacement sites of the LRD of the susceptibility pita could be explained by purifying selection . Comparison of Pita between O rufipogon and O officinalis revealed an excess of nonconservative amino acid substitutions in the LRD , which could be related to the host-pathogen interaction .
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: DNA polymorphism in the blast disease resistance gene Pita of the wild rice Oryza rufipogon and its related species .
Supplemental links/files: reference in endnote online text related articles pubmed citation
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