Integrated morpho-biochemical and transcriptome analyses reveal multi-dimensional response of upland cotton (Gossypium hirsutum L.) to low temperature stress during seedling establishment.

Lakhvir Kaur Dhaliwal, Ritchel B. Gannaban, Avinash Shrestha, Puneet Kaur Mangat, Joshua James Singleton, Rosalyn Shim

Research output: Contribution to journalArticlepeer-review

Abstract

Cotton is a tropical/subtropical crop and is innately susceptible to cold. Using an approach that integrates morphological, biochemical, and transcriptome analyses, the study aimed to understand the molecular underpinnings of phenotypic adjustments in cotton seedlings under cold stress. Exposure of six cotton accessions to 15°C during the seedling stage significantly reduced chlorophyll content, stomatal conductance, plant height, and biomass, but increased malondialdehyde and proline production. Comparative transcriptome profiling of the cold-sensitive accession SA 3781 grown under low and normal temperatures showed the upregulation of genes related to the production of reactive oxygen species (ROS) under cold stress. Despite a similar upregulation of genes encoding metabolites that can scavenge ROS and provide osmoprotection for the cell, the stressed plants still exhibited oxidative stress in terms of lipid peroxidation. This may be due in part to the upregulation of absci
Original languageEnglish
Pages (from-to)1-13
JournalPlant Environment Interactions
DOIs
StatePublished - Nov 20 2021

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