Physiological and molecular mechanisms of nitrogen in alleviating drought stress in Phoebe bournei.

ABSTRACT: To explore the mechanisms by which nitrogen alleviates drought stress in Phoebe bournei, this study integrated drought treatment with exogenous nitrogen application to assess physiological characteristics and employed transcriptome sequencing to decipher transcriptional responses. The results indicated that nitrogen fertilizer mitigated leaf wilting in P. bournei under drought stress and significantly enhanced leaf dry weight, fresh weight, thickness, and chlorophyll content. Furthermore, nitrogen improved photosynthesis by inhibiting stomatal closure, enhancing light energy absorption, and accelerating electron transport in PSII. 11 photosynthesis-related genes, including PFP, TRY, LQY, FTSH, FRO, CURT, PETF, ATPF, PETA, CRRSP, and MEN and 17 carbohydrate metabolism-associated genes, such

SUBMITTER: An J 

PROVIDER: S-EPMC12033254 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature