Akshay Sureshrao Sakhare, Sudhir Kumar, Ranjith K. Ellur, G. D. Prahalada, Suneetha Kota, Ranjeet Ranjan Kumar, Soham Ray, Baidya Nath Mandal, Viswanathan Chinnusamy
{"title":"Genome-wide association study on root traits under non-stress and osmotic stress conditions to improve drought tolerance in rice (Oryza sativa Lin.)","authors":"Akshay Sureshrao Sakhare, Sudhir Kumar, Ranjith K. Ellur, G. D. Prahalada, Suneetha Kota, Ranjeet Ranjan Kumar, Soham Ray, Baidya Nath Mandal, Viswanathan Chinnusamy","doi":"10.1007/s11738-024-03752-7","DOIUrl":null,"url":null,"abstract":"<div><p>Rice productivity is adversely affected by drought stress. Genetic improvement is key to enhance the rice productivity in the drought prone areas. Towards identification of genes/QTLs governing root system architecture, 162 rice genotypes were phenotyped for root traits viz. primary root length, total root length, area of root surface and average root diameter under non-stress and osmotic stress (− 0.15 MPa) in hydroponics conditions. 50 k SNP genotyping data of these genotypes were used for genome-wide association study (GWAS) to identify genes/QTLs for root traits. Thirty-six most significant QTLs for constitutive and stress inductive root traits were identified of which 10 were novel QTLs. In addition, several suggestive loci governing root traits were identified. The constitutive and stress inductive root traits can be utilized in development of rice varieties that can perform well under both irrigated and stress environments.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 1","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Physiologiae Plantarum","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s11738-024-03752-7","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Rice productivity is adversely affected by drought stress. Genetic improvement is key to enhance the rice productivity in the drought prone areas. Towards identification of genes/QTLs governing root system architecture, 162 rice genotypes were phenotyped for root traits viz. primary root length, total root length, area of root surface and average root diameter under non-stress and osmotic stress (− 0.15 MPa) in hydroponics conditions. 50 k SNP genotyping data of these genotypes were used for genome-wide association study (GWAS) to identify genes/QTLs for root traits. Thirty-six most significant QTLs for constitutive and stress inductive root traits were identified of which 10 were novel QTLs. In addition, several suggestive loci governing root traits were identified. The constitutive and stress inductive root traits can be utilized in development of rice varieties that can perform well under both irrigated and stress environments.
期刊介绍:
Acta Physiologiae Plantarum is an international journal established in 1978 that publishes peer-reviewed articles on all aspects of plant physiology. The coverage ranges across this research field at various levels of biological organization, from relevant aspects in molecular and cell biology to biochemistry.
The coverage is global in scope, offering articles of interest from experts around the world. The range of topics includes measuring effects of environmental pollution on crop species; analysis of genomic organization; effects of drought and climatic conditions on plants; studies of photosynthesis in ornamental plants, and more.