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Review
. 2023 Aug 28:14:1226041.
doi: 10.3389/fpls.2023.1226041. eCollection 2023.

Uncovering the mechanisms of salicylic acid-mediated abiotic stress tolerance in horticultural crops

Hua Yang  1 , Rui Fang  1 , Ling Luo  2 , Wei Yang  1 , Qiong Huang  1 , Chunlin Yang  1 , Wenkai Hui  1 , Wei Gong  1 , Jingyan Wang  1
Affiliations
Review

Uncovering the mechanisms of salicylic acid-mediated abiotic stress tolerance in horticultural crops

Hua Yang et al. Front Plant Sci. .

Abstract

Salicylic acid (SA) has been recognized as a promising molecule for improving abiotic stress tolerance in plants due to its ability to enhance antioxidant defense system, and promote root architecture system. Recent research has focused on uncovering the mechanisms by which SA confers abiotic stress tolerance in horticultural crops. SA has been shown to act as a signaling molecule that triggers various physiological and morphological responses in plants. SA regulates the production of reactive oxygen species (ROS). Moreover, it can also act as signaling molecule that regulate the expression of stress-responsive genes. SA can directly interact with various hormones, proteins and enzymes involved in abiotic stress tolerance. SA regulates the antioxidant enzymes activities that scavenge toxic ROS, thereby reducing oxidative damage in plants. SA can also activate protein kinases that phosphorylate and activate transcription factors involved in stress responses. Understanding these mechanisms is essential for developing effective strategies to improve crop resilience in the face of changing environmental conditions. Current information provides valuable insights for farmers and plant researchers, offering new strategies to enhance crop resilience and productivity in the face of environmental challenges. By harnessing the power of SA and its signaling pathways, farmers can develop more effective stress management techniques and optimize crop performance. Plant researchers can also explore innovative approaches to breed or engineer crops with enhanced stress tolerance, thereby contributing to sustainable agriculture and food security.

Keywords: photosynthetic impairments; poor yield; signaling molecules; stomatal conductance; stunted growth.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Physiological and molecular responses of the horticultural crops under abiotic stress.
Figure 2
Figure 2
Antioxidant mechanism under abiotic stress in horticultural crops.
Figure 3
Figure 3
Exogenous salicylic acid application up-regulated antioxidant defense system and balanced redox homeostasis.
Figure 4
Figure 4
Salicylic acid supplementation enhanced abiotic stress tolerance in horticultural crops.
Figure 5
Figure 5
Salicylic acid application protected photosynthetic system and promoted plant growth.
See this image and copyright information in PMC

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