Characterization of high-temperature stress-tolerant tomato (Solanum lycopersicum L.) genotypes by biochemical analysis and expression profiling of heat-responsive genes.

ABSTRACT: High-temperature stress severely impacts both yield and quality of tomato fruits, and therefore, it is required to develop stress-tolerant cultivars. In the present study, two tomato genotypes, H88-78-1 and CLN-1621, identified through preliminary phenotypic screening were characterized by analysis of molecular, physiological, and biochemical traits in comparison with a susceptible genotype Punjab Chhuhara. Phenotypic stress tolerance of both the genotypes was validated at biochemical level as they showed higher amount of relative water content, photosynthetic pigments, free cellular proline, and antioxidant molecules while less amount of H₂O₂ and electrolyte leakage. Expression analysis of 67 genes including heat shock factors, heat shock proteins, and other stress-r

SUBMITTER: Karkute SG 

PROVIDER: S-EPMC7801581 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature