{"title":"水稻生殖期干旱胁迫下高产基因的优势单倍型。","authors":"Preeti Singh, Bandana Pahi, Krishna T Sundaram, Niranjani Gnanapragasam, Sonali Vijay Habde, Nandigam Vinay Kumar, Namrata Devidas Patil, Pronob J Paul, Ravi Shekhar Kumar, Suresh Prasad Singh, Sanjay Kalia, Arvind Kumar, Ajay Kohli, Uma Maheshwar Singh, Vikas Kumar Singh, Pallavi Sinha","doi":"10.1093/jxb/eraf150","DOIUrl":null,"url":null,"abstract":"<p><p>Understanding the genetic basis of reproductive stage drought tolerance (RSDT) requires bridging genomic variations with phenotype. This study employed a genome-wide association study (GWAS) using 450 rice accessions for grain yield under reproductive stage drought stress across three locations and two seasons. Results revealed 67 marker-trait associations (MTAs) that corresponded to 23 candidate genes. Superior haplotypes identified for ten RSDT-related genes including SAP-H22, WRKY109-H6, OsIRO2-H3, OsSOBIR-H68, OsPGL31-H8, OsDAHPS1-H2, ZCD-H13, OsMC2-H8, Ospdr9-H16, and SDR-H2.These genes are involved in stress related processes such as transcription regulation, cell wall structure modification, leaf rolling, programmed cell death, redox stress and secondary metabolite accumulation. Notably, introgressing superior haplotypes from the OsIRO2-H3 gene into elite rice cultivar led to yield advantage of 25.0 % to 27.3 % over recurrent parents. These findings highlight the potential of these genes as valuable resources for breeding high-yielding, drought-tolerant rice varieties.</p>","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6000,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Superior haplotypes of genes associated with higher grain yield under reproductive stage drought stress in rice.\",\"authors\":\"Preeti Singh, Bandana Pahi, Krishna T Sundaram, Niranjani Gnanapragasam, Sonali Vijay Habde, Nandigam Vinay Kumar, Namrata Devidas Patil, Pronob J Paul, Ravi Shekhar Kumar, Suresh Prasad Singh, Sanjay Kalia, Arvind Kumar, Ajay Kohli, Uma Maheshwar Singh, Vikas Kumar Singh, Pallavi Sinha\",\"doi\":\"10.1093/jxb/eraf150\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Understanding the genetic basis of reproductive stage drought tolerance (RSDT) requires bridging genomic variations with phenotype. This study employed a genome-wide association study (GWAS) using 450 rice accessions for grain yield under reproductive stage drought stress across three locations and two seasons. Results revealed 67 marker-trait associations (MTAs) that corresponded to 23 candidate genes. Superior haplotypes identified for ten RSDT-related genes including SAP-H22, WRKY109-H6, OsIRO2-H3, OsSOBIR-H68, OsPGL31-H8, OsDAHPS1-H2, ZCD-H13, OsMC2-H8, Ospdr9-H16, and SDR-H2.These genes are involved in stress related processes such as transcription regulation, cell wall structure modification, leaf rolling, programmed cell death, redox stress and secondary metabolite accumulation. Notably, introgressing superior haplotypes from the OsIRO2-H3 gene into elite rice cultivar led to yield advantage of 25.0 % to 27.3 % over recurrent parents. These findings highlight the potential of these genes as valuable resources for breeding high-yielding, drought-tolerant rice varieties.</p>\",\"PeriodicalId\":15820,\"journal\":{\"name\":\"Journal of Experimental Botany\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":5.6000,\"publicationDate\":\"2025-04-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Experimental Botany\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1093/jxb/eraf150\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Experimental Botany","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1093/jxb/eraf150","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
Superior haplotypes of genes associated with higher grain yield under reproductive stage drought stress in rice.
Understanding the genetic basis of reproductive stage drought tolerance (RSDT) requires bridging genomic variations with phenotype. This study employed a genome-wide association study (GWAS) using 450 rice accessions for grain yield under reproductive stage drought stress across three locations and two seasons. Results revealed 67 marker-trait associations (MTAs) that corresponded to 23 candidate genes. Superior haplotypes identified for ten RSDT-related genes including SAP-H22, WRKY109-H6, OsIRO2-H3, OsSOBIR-H68, OsPGL31-H8, OsDAHPS1-H2, ZCD-H13, OsMC2-H8, Ospdr9-H16, and SDR-H2.These genes are involved in stress related processes such as transcription regulation, cell wall structure modification, leaf rolling, programmed cell death, redox stress and secondary metabolite accumulation. Notably, introgressing superior haplotypes from the OsIRO2-H3 gene into elite rice cultivar led to yield advantage of 25.0 % to 27.3 % over recurrent parents. These findings highlight the potential of these genes as valuable resources for breeding high-yielding, drought-tolerant rice varieties.
期刊介绍:
The Journal of Experimental Botany publishes high-quality primary research and review papers in the plant sciences. These papers cover a range of disciplines from molecular and cellular physiology and biochemistry through whole plant physiology to community physiology.
Full-length primary papers should contribute to our understanding of how plants develop and function, and should provide new insights into biological processes. The journal will not publish purely descriptive papers or papers that report a well-known process in a species in which the process has not been identified previously. Articles should be concise and generally limited to 10 printed pages.