Plant Hormone-Mediated Regulation of Stress Responses in Fruit Crops- A Review

Abstract

One of the challenges facing fruit crop production globally is the regional climate regimes are becoming more unpredictable year after year leading to various type of stress. The exact impact of these stress on fruit crops is difficult to predict. Plant hormones can improve tolerance against abiotic stresses by inhibiting or reducing the active oxygen (AOS) accumulation, electrolyte leakage, induce the expression of stress-specific genes, etc. Among the major hormones produced by the plants, ABA, SA, JA and ET are known to play major roles in mediating plant defence response against various abiotic stresses. Crosstalk networks among phytohormones mediated by diverse key regulators have been extensively investigated and documented in various research investigations. Many canvassers' recommended the use of phytohormones to counteract abiotic stress as increasing stress tolerance through conventional breeding methods requires longer time and also leads to inadequate adoptability of such cultivars under diverse cultivation environment for validation of performance and heritability. In this review, we summarize the roles of the major phytohormones present in fruit crops in regulating abiotic stresses responses with special focus on the significance of crosstalk between various hormones at biochemical and molecular level in generating a sophisticated and efficient stress response.

Physio-biochemical and molecular stress regulators and their crosstalk for low-temperature stress responses in fruit crops: A review

“…Plant growth-regulating hormones such as abscisic acid (ABA), ethylene, jasmonic acid, and salicylic acid (SA) play a significant role during abiotic stresses, including cold, salinity, drought, light, and heavy metal stresses and they acts as links between stress regulator and responses at cellular, tissue and organ level to external stimuli ( Rachappanavar et al., 2022 ). When Vitis vinifera cv.…”

Genome-Wide Identification of Stress-Associated Proteins (SAPs) Encoding A20/AN1 Zinc Finger in Almond (Prunus dulcis) and Their Differential Expression during Fruit Development

“…To eliminate the effects of biotic and abiotic stresses, plants have developed several mechanisms, including the responsive action of stress-regulating genes for the plant’s growth and maintenance [ 4 ]. Plants mediate the early stress response by the regulation of phytohormones, such as jasmonic acid (JA), abscisic acid (ABA), and salicylic acid (SA) [ 5 , 6 ]. Various transcription factor proteins have also been identified that play a key role in the regulation of gene expression by interacting with cis -regulatory promoter elements at the transcription level [ 7 ].…”