Resistance mechanism of Abies beshanzuensis under heat stress was elucidated through the integration of physiological and transcriptomic analyses.

ABSTRACT: Elevated temperatures significantly impaired the normal growth and development of plants. This study combined physiological and transcriptomic analyses to explore the potential mechanisms of response to heat stress in Abies beshanzuensis M. H. Wu. Under heat stress, A. beshanzuensis exhibited reduced photosynthetic rates and chlorophyll content, accompanied by marked downregulation of photosynthesis-associated genes, suggesting heat-induced photoinhibition and compromised carbon assimilation capacity. Furthermore, the increased activities of MDA, SOD, POD, and CAT suggested that A. beshanzuensis could withstand heat stress by enhancing the activity of antioxidant enzymes to mitigate excess reactive oxygen species and anions. Transcriptome analysis revealed the induction of genes related to

SUBMITTER: Zhao L 

PROVIDER: S-EPMC12065339 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature