| 12 matches found in 4 documents. Search time: 0.201 seconds. |
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Score: 6.00 |
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| Title: Mutation of the Rice Narrow leaf1 Gene , Which Encodes a Novel Protein , Affects Vein Patterning and Polar Auxin Transport .
| | Author: Qi J Qian Q Bu Q Li S Chen Q Sun J Liang W Zhou Y Chu C Li X Ren F Palme K Zhao B Chen J Chen M Li C | | Journal: Plant Physiol Citation: V : 147 P : 1947-59 Year: 2008 Type: In-Data-Review | | Literature: oryza Field: abstract Doc ID: pub18562767 Accession (PMID): 18562767 | | Abstract: The size and shape of the plant leaf is an important agronomic trait .
To understand the molecular mechanism governing plant leaf shape , we characterized a classic rice ( Oryza sativa ) dwarf mutant named narrow leaf1 ( nal1 ) , which exhibits a characteristic phenotype of narrow leaves .
In accordance with reduced leaf blade width , leaves of nal1 contain a decreased number of longitudinal veins .
Anatomical investigations revealed that the culms of nal1 also show a defective vascular system , in which the number and distribution pattern of vascular bundles are altered .
Map-based cloning and genetic complementation analyses demonstrated that Nal1 encodes a plant-specific protein with unknown biochemical function .
We provide evidence showing that Nal1 is richly expressed in vascular it issues and that mutation of this gene leads to significantly reduced polar auxin transport capacity .
These results indicate that Nal1 affects polar auxin transport as well as the vascular patterns of rice plants and plays an important role in the control of lateral leaf growth .
| Matching Sentences:
[ Sen. 2, subscore: 1.00 ]: To understand the molecular mechanism governing plant leaf shape , we characterized a classic rice ( Oryza sativa ) dwarf mutant named narrow leaf1 ( nal1 ) , which exhibits a characteristic phenotype of narrow leaves .
[ Sen. 3, subscore: 1.00 ]: In accordance with reduced leaf blade width , leaves of nal1 contain a decreased number of longitudinal veins .
[ Sen. 4, subscore: 1.00 ]: Anatomical investigations revealed that the culms of nal1 also show a defective vascular system , in which the number and distribution pattern of vascular bundles are altered .
[ Sen. 5, subscore: 1.00 ]: Map-based cloning and genetic complementation analyses demonstrated that Nal1 encodes a plant-specific protein with unknown biochemical function .
[ Sen. 6, subscore: 1.00 ]: We provide evidence showing that Nal1 is richly expressed in vascular it issues and that mutation of this gene leads to significantly reduced polar auxin transport capacity .
[ Sen. 7, subscore: 1.00 ]: These results indicate that Nal1 affects polar auxin transport as well as the vascular patterns of rice plants and plays an important role in the control of lateral leaf growth .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 4.00 |
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| Title: Fine mapping of a major QTL for flag leaf width in rice , qFLW4 , which might be caused by alternative splicing of NAL1 .
| | Author: Chen M Luo J Shao G Wei X Tang S Sheng Z Song J Hu P | | Journal: Plant Cell Rep Citation: V : 31 P : 863-72 Year: 2012 Type: In-Process | | Literature: oryza Field: abstract Doc ID: pub22179305 Accession (PMID): 22179305 | | Abstract: Leaf width is an important agricultural trait in rice .
QTL mapping in a recombinant inbred line population derived from the cross between the javanica cultivar D50 ( narrow-leaved ) and the indica cultivar HB277 ( wide-leaved ) identified five QTLs controlling flag leaf width .
Fine mapping of the major QTL qFLW4 narrowed its location to a 74 . 8 kb interval between the SSR loci RM17483 and RM17486 , a region which also contains the gene NAL1 ( Narrow leaf 1 ) .
There was no difference in the level of NAL1 expression between cvs D50 and HB277 , but an analysis of the NAL1 transcripts showed that while most ( if not all ) of those produced in cv .
D50 were full-length , two-thirds of those in HB277 were non-functional due to either loss or gain of sequence .
The inference was that NAL1 is probably synonymous with qFLW4 , and that the functional difference between the two alleles was due to alternative splicing .
The analysis of expression of other known genes involved in the determination of leaf width provided no evidence of their having any clear functional association with qFLW4/NAL1 .
| Matching Sentences:
[ Sen. 4, subscore: 2.00 ]: There was no difference in the level of NAL1 expression between cvs D50 and HB277 , but an analysis of the NAL1 transcripts showed that while most ( if not all ) of those produced in cv .
[ Sen. 3, subscore: 1.00 ]: Fine mapping of the major QTL qFLW4 narrowed its location to a 74 . 8 kb interval between the SSR loci RM17483 and RM17486 , a region which also contains the gene NAL1 ( Narrow leaf 1 ) .
[ Sen. 6, subscore: 1.00 ]: The inference was that NAL1 is probably synonymous with qFLW4 , and that the functional difference between the two alleles was due to alternative splicing .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 2.00 |
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| Title: Evaluation of near-isogenic lines for drought resistance QTL and fine mapping of a locus affecting flag leaf width , spikelet number , and root volume in rice .
| | Author: Ding X Li X Xiong L | | Journal: Theor Appl Genet Citation: V : 123 P : 815-26 Year: 2011 Type: MEDLINE | | Literature: oryza Field: abstract Doc ID: pub21681490 Accession (PMID): 21681490 | | Abstract: Drought stress is a major limiting factor for crop production and breeding for drought resistance is very challenging due to the complex nature of this trait .
Previous studies in rice suggest that the upland japonica variety IRAT109 shows better drought resistance than the lowland indica variety Zhenshan 97 .
Numerous quantitative trait loci ( QTL ) have been previously mapped using a recombinant inbred line population derived from these two genotypes .
In this study , near-isogenic lines ( NILs ) for 17 drought resistance-related QTL were constructed and phenotypic variations of these NILs were investigated under drought and normal conditions .
Fourteen of these NILs showed significant phenotypic differences relative to the recurrent parent under at least one of the conditions and nine NILs showed significant differences under both conditions .
After eliminating the effect of heading date on drought resistance , only four NILs carrying seven QTL ( four for the same grain yield-related traits and three for the same or similar root traits QTL ) showed differences consistent with the original QTL mapping results .
One of these lines ( N19 ) contains qFSR4 , a QTL on chromosome 4 controlling root volume per tiller and co-segregating with flag leaf width and spikelet number per panicle .
Using a population derived from N19 , qFSR4 was mapped to a 38-kb region containing three open reading frames including the previously characterized NARROW LEAF 1 ( NAL1 ) gene .
NAL1 , which controls leaf width and also affects vein patterning and polar auxin transport , is the most promising candidate genes for qFSR4 .
Our results underscore the importance of the development of NILs to confirm the identification of QTL affecting complex traits such as drought resistance .
| Matching Sentences:
[ Sen. 8, subscore: 1.00 ]: Using a population derived from N19 , qFSR4 was mapped to a 38-kb region containing three open reading frames including the previously characterized NARROW LEAF 1 ( NAL1 ) gene .
[ Sen. 9, subscore: 1.00 ]: NAL1 , which controls leaf width and also affects vein patterning and polar auxin transport , is the most promising candidate genes for qFSR4 .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 1.00 |
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| Title: Fine mapping of a major QTL for flag leaf width in rice , qFLW4 , which might be caused by alternative splicing of NAL1 .
| | Author: Chen M Luo J Shao G Wei X Tang S Sheng Z Song J Hu P | | Journal: Plant Cell Rep Citation: V : 31 P : 863-72 Year: 2012 Type: In-Process | | Literature: oryza Field: title Doc ID: pub22179305 Accession (PMID): 22179305 | | Abstract: Leaf width is an important agricultural trait in rice .
QTL mapping in a recombinant inbred line population derived from the cross between the javanica cultivar D50 ( narrow-leaved ) and the indica cultivar HB277 ( wide-leaved ) identified five QTLs controlling flag leaf width .
Fine mapping of the major QTL qFLW4 narrowed its location to a 74 . 8 kb interval between the SSR loci RM17483 and RM17486 , a region which also contains the gene NAL1 ( Narrow leaf 1 ) .
There was no difference in the level of NAL1 expression between cvs D50 and HB277 , but an analysis of the NAL1 transcripts showed that while most ( if not all ) of those produced in cv .
D50 were full-length , two-thirds of those in HB277 were non-functional due to either loss or gain of sequence .
The inference was that NAL1 is probably synonymous with qFLW4 , and that the functional difference between the two alleles was due to alternative splicing .
The analysis of expression of other known genes involved in the determination of leaf width provided no evidence of their having any clear functional association with qFLW4/NAL1 .
| Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: Fine mapping of a major QTL for flag leaf width in rice , qFLW4 , which might be caused by alternative splicing of NAL1 .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
