Cold Shock for Cold Tolerance: Phytohormone Dynamics in Sorghum Provides Insights.

ABSTRACT: The loss of yield due to cold stress during the early reproductive phase poses challenges to the expansion of sorghum cultivation into temperate regions. A better understanding of the physiological mechanisms is crucial for rapid progress in breeding cold-tolerant sorghum varieties. To identify the floral phytohormones responsible for reproductive cold tolerance, a cold-tolerant and a cold-sensitive genotype were subjected to cold stress at various developmental stages during the early reproductive phase. In addition to abscisic acid and its derivatives, including abscisic acid glucose ester, dihydrophaseic acid, and phaseic acid, various gibberellins as well as jasmonic acid and its bioactive form jasmonic acid isoleucine were examined. We found that cold-tolerant sorghum is capable of do

SUBMITTER: Neitzert L 

PROVIDER: S-EPMC12807585 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature