Spermidine enhances the heat tolerance of

• Tác giả: Xiaofei Han, Jiaolei Shangguan, Liang Shi, Lingyan Shi, Zi Wang, Ziyang Wei, Mingwen Zhao
• Ngôn ngữ: eng
• Ký hiệu phân loại: 296.09015 Judaism
• Thông tin xuất bản: United States : Applied and environmental microbiology , 2025
• Bộ sưu tập: NCBI
• ID: 191238

Tóm tắt

UNLABELLED: High temperature is an unavoidable environmental stress that generally exerts detrimental effects on organisms and has widespread effects on metabolism. Spermidine is an important member of the polyamines family and is involved in a range of abiotic stress responses in plants. Mitochondria play an essential role in cellular homeostasis and are key components of the stress response. Our results indicated that mitochondrial respiratory intensity increased by 80% in wild-type (WT) under heat stress, but the activities of key enzymes of the tricarboxylic acid (TCA) cycle and electron transport chain (ETC) were significantly reduced upon the knockdown of the spermidine synthase gene ( IMPORTANCE: Polyamines are stress-responsive molecules that enhance the tolerance of plants to multiple abiotic stresses by regulating a variety of biological processes. Our previous research indicated that heat stress induces the the biosynthesis of polyamines and promotes the conversion of putrescine to spermidine in