Phenotypic and transcriptomic responses of diverse rice accessions to transient heat stress during early grain development.

ABSTRACT: Heat stress (HS) occurring during the grain-filling period has a detrimental effect on grain yield and quality in rice (Oryza sativa). The development of heat-resilient cultivars could partly solve this issue if tolerant alleles can be identified and incorporated into the germplasm. In this study, we posit that some of the phenotypic variations for heat resilience during grain development could be due to variations in gene expression among accessions. To test this, we characterized the HS response of 10 diverse rice accessions from three major sub-populations using physiological and transcriptome analyses. At a single-grain level, grain width and grain thickness emerged as the most heat-sensitive traits. During a transient HS, IND-3 was categorized as highly sensitive, while five ac

SUBMITTER: Nalini Chandran AK 

PROVIDER: S-EPMC11358087 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature