Decoding submergence tolerance in Prunus persica: Integrated transcriptomic and metabolomic acclimations of antioxidant system, cell wall dynamics, and hormonal signaling

Horticulture Advances, Journal Year: 2025, Volume and Issue: 3(1)

Published: Feb. 10, 2025

Abstract Low oxygen stress (hypoxia) induced by submergence significantly impairs respiration in fruit trees, leading to reduced yield and, extreme cases, tree mortality. While extensive research has focused on the root responses of peach trees waterlogging, mechanisms underlying leaf complete remain poorly understood. In this study, both transcriptomic and metabolic approaches were employed explore differential tolerance between two cultivars: 'Dongxi Xiaoxian' (DX), which exhibits tolerance, 'Hujing Milu' (HM), is sensitive. Compared HM, DX leaves experienced less decline verdancy, chlorophyll, carotenoid content under submergence. also showed enhanced antioxidant activities ROS scavengers levels H 2 O MDA, correlating with improved tolerance. Transcriptomic analysis revealed significant alterations expression genes involved photosynthesis, glycan biosynthesis, α-linolenic acid metabolism cultivars. Key metabolites, including sugars (sorbitol sucrose), amino acids (phenylalanine L-norvaline), cell wall polysaccharides (lignin pectin), plant hormones (jasmonic salicylic acid), identified as critical for DX's superior These findings elucidate submergence, providing insights into potential strategies genetic improvement aimed at enhancing hypoxia resistance trees.

Language: Английский

MicroRNAs in Plants Development and Stress Resistance

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

ABSTRACT Plant growth and development are governed by a rigorously timed sequence of ontogenetic programmes. MicroRNAs (miRNAs), class short noncoding RNAs, function as master regulators gene expression targeting mRNAs for cleavage or direct translational inhibition at the posttranscriptional level in eukaryotes. Numerous miRNA molecules that control significant agronomic properties plants have been found. On one hand, miRNAs target transcription factors (TFs) to determine plant structure, such root development, internode elongation, leaf morphogenesis, sex determination nutrient transition. other alter levels adapt biological abiotic stresses, including fungi, bacteria, viruses, drought, waterlogging, high temperature, low salinity, deficiencies, heavy metals stresses. To fully understand role plants, we review regulatory stress resistance. Beyond that, propose novel can be effectively further studied with artificial (amiRNA) tandem mimics (STTM) delivery vitro used improve crop yield agricultural sustainability.

Language: Английский