{"title":"水稻营养期抗旱性优势单倍型的全基因组关联分析。","authors":"Gyanisha Nayak, C Parameswaran, Nairita Vaidya, Madhuchhanda Parida, S Sabarinathan, Prabharani Chaudhari, Pallavi Sinha, Vikas Kumar Singh, Sanghamitra Samantaray, Jawahar Lal Katara","doi":"10.1007/s12298-025-01573-7","DOIUrl":null,"url":null,"abstract":"<p><p>Water availability is the most critical factor limiting rice yield in rainfed agro-ecosystems. Drought stress during the vegetative stage inhibits key growth processes, such as leaf formation and tillering, significantly impacting yield. This study aimed to investigate the genetic basis of vegetative stage drought tolerance and identify QTLs and genes associated with it through GWAS. A total of 19 major QTLs were identified for six traits: leaf rolling, relative water content, plant height, leaf area, tiller number, and leaf number, with phenotypic variances ranging from 10.55 to 80.05%. Additionally, haplotypes for six candidate genes were identified: <i>OsCYP72A32</i> for leaf rolling, <i>OsNCX5.2</i> for relative water content, <i>OsSPX2</i> for plant height, <i>OsSTA104</i> for tiller number, <i>OsRING313</i> for leaf number and <i>Os3BGlu6</i> for leaf area. Besides, genotypes such as NCS 901 A, H 15-23-DA, LOHAMBITRO and MEJANES 2 were found to be superior donors. These tolerant genotypes and superior haplotypes can be used in haplotype-based breeding programs to enhance drought tolerance in rice at vegetative stage.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s12298-025-01573-7.</p>","PeriodicalId":20148,"journal":{"name":"Physiology and Molecular Biology of Plants","volume":"31 3","pages":"435-452"},"PeriodicalIF":3.3000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006632/pdf/","citationCount":"0","resultStr":"{\"title\":\"Genome-wide association analysis in identification of superior haplotypes for vegetative stage drought stress tolerance in rice.\",\"authors\":\"Gyanisha Nayak, C Parameswaran, Nairita Vaidya, Madhuchhanda Parida, S Sabarinathan, Prabharani Chaudhari, Pallavi Sinha, Vikas Kumar Singh, Sanghamitra Samantaray, Jawahar Lal Katara\",\"doi\":\"10.1007/s12298-025-01573-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Water availability is the most critical factor limiting rice yield in rainfed agro-ecosystems. Drought stress during the vegetative stage inhibits key growth processes, such as leaf formation and tillering, significantly impacting yield. This study aimed to investigate the genetic basis of vegetative stage drought tolerance and identify QTLs and genes associated with it through GWAS. A total of 19 major QTLs were identified for six traits: leaf rolling, relative water content, plant height, leaf area, tiller number, and leaf number, with phenotypic variances ranging from 10.55 to 80.05%. Additionally, haplotypes for six candidate genes were identified: <i>OsCYP72A32</i> for leaf rolling, <i>OsNCX5.2</i> for relative water content, <i>OsSPX2</i> for plant height, <i>OsSTA104</i> for tiller number, <i>OsRING313</i> for leaf number and <i>Os3BGlu6</i> for leaf area. Besides, genotypes such as NCS 901 A, H 15-23-DA, LOHAMBITRO and MEJANES 2 were found to be superior donors. These tolerant genotypes and superior haplotypes can be used in haplotype-based breeding programs to enhance drought tolerance in rice at vegetative stage.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s12298-025-01573-7.</p>\",\"PeriodicalId\":20148,\"journal\":{\"name\":\"Physiology and Molecular Biology of Plants\",\"volume\":\"31 3\",\"pages\":\"435-452\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006632/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physiology and Molecular Biology of Plants\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1007/s12298-025-01573-7\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/3/23 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physiology and Molecular Biology of Plants","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s12298-025-01573-7","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/23 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
Genome-wide association analysis in identification of superior haplotypes for vegetative stage drought stress tolerance in rice.
Water availability is the most critical factor limiting rice yield in rainfed agro-ecosystems. Drought stress during the vegetative stage inhibits key growth processes, such as leaf formation and tillering, significantly impacting yield. This study aimed to investigate the genetic basis of vegetative stage drought tolerance and identify QTLs and genes associated with it through GWAS. A total of 19 major QTLs were identified for six traits: leaf rolling, relative water content, plant height, leaf area, tiller number, and leaf number, with phenotypic variances ranging from 10.55 to 80.05%. Additionally, haplotypes for six candidate genes were identified: OsCYP72A32 for leaf rolling, OsNCX5.2 for relative water content, OsSPX2 for plant height, OsSTA104 for tiller number, OsRING313 for leaf number and Os3BGlu6 for leaf area. Besides, genotypes such as NCS 901 A, H 15-23-DA, LOHAMBITRO and MEJANES 2 were found to be superior donors. These tolerant genotypes and superior haplotypes can be used in haplotype-based breeding programs to enhance drought tolerance in rice at vegetative stage.
Supplementary information: The online version contains supplementary material available at 10.1007/s12298-025-01573-7.
期刊介绍：
Founded in 1995, Physiology and Molecular Biology of Plants (PMBP) is a peer reviewed monthly journal co-published by Springer Nature. It contains research and review articles, short communications, commentaries, book reviews etc., in all areas of functional plant biology including, but not limited to plant physiology, biochemistry, molecular genetics, molecular pathology, biophysics, cell and molecular biology, genetics, genomics and bioinformatics. Its integrated and interdisciplinary approach reflects the global growth trajectories in functional plant biology, attracting authors/editors/reviewers from over 98 countries.
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