Carboxylic acid accumulation and secretion contribute to the alkali-stress tolerance of halophyte Leymus chinensis

Wang, Huan; Zhao, Shuting; Sun, Bo; Osman, Feisal Mohamed; Qi, Zexin; Ding, Dan; Liu, Xin; Ding, Jiale; Zhang, Zhian

doi:10.3389/fpls.2024.1366108

Cited by 2 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In P. tenuiflora plants, 75 AISMs with the -COOH group were discovered, including 42 fatty acids, 3 amino acid derivatives, 22 phenolic acids, and 8 organic acids [33]. Our recently published work revealed that halophyte Leymus chinensis responded to alkali stress via the secretion of phenolic acids, free fatty acids, organic acids, and amino acids [36]. However, that study did not apply salt stress treatment, so the root secretion response of L. chinensis to a high pH was not explored.…”

Section: Discussionmentioning

confidence: 99%

Regulation of Root Exudation in Wheat Plants in Response to Alkali Stress

Wang,

Zhao,

et al. 2024

Plants

Self Cite

View full text Add to dashboard Cite

Soil alkalization is an important environmental factor limiting crop production. Despite the importance of root secretion in the response of plants to alkali stress, the regulatory mechanism is unclear. In this study, we applied a widely targeted metabolomics approach using a local MS/MS data library constructed with authentic standards to identify and quantify root exudates of wheat under salt and alkali stresses. The regulatory mechanism of root secretion in alkali-stressed wheat plants was analyzed by determining transcriptional and metabolic responses. Our primary focus was alkali stress-induced secreted metabolites (AISMs) that showed a higher secretion rate in alkali-stressed plants than in control and salt-stressed plants. This secretion was mainly induced by high-pH stress. We discovered 55 AISMs containing –COOH groups, including 23 fatty acids, 4 amino acids, 1 amino acid derivative, 7 dipeptides, 5 organic acids, 9 phenolic acids, and 6 others. In the roots, we also discovered 29 metabolites with higher levels under alkali stress than under control and salt stress conditions, including 2 fatty acids, 3 amino acid derivatives, 1 dipeptide, 2 organic acids, and 11 phenolic acids. These alkali stress-induced accumulated carboxylic acids may support continuous root secretion during the response of wheat plants to alkali stress. In the roots, RNAseq analysis indicated that 5 6-phosphofructokinase (glycolysis rate-limiting enzyme) genes, 16 key fatty acid synthesis genes, and 122 phenolic acid synthesis genes have higher expression levels under alkali stress than under control and salt stress conditions. We propose that the secretion of multiple types of metabolites with a –COOH group is an important pH regulation strategy for alkali-stressed wheat plants. Enhanced glycolysis, fatty acid synthesis, and phenolic acid synthesis will provide more energy and substrates for root secretion during the response of wheat to alkali stress.

show abstract

Section: Discussionmentioning

confidence: 99%

Regulation of Root Exudation in Wheat Plants in Response to Alkali Stress

Wang,

Zhao,

et al. 2024

Plants

Self Cite

View full text Add to dashboard Cite

show abstract

Lipidomics in Plants Under Abiotic Stress Conditions: An Overview

Henschel,

Andrade,

dos Santos

et al. 2024

Agronomy

View full text Add to dashboard Cite

Lipids are ubiquitous macromolecules that play essential roles in several metabolic processes in plants, such as primary and secondary metabolism, energy storage, and lipid signaling, also being major constituents of membranes. Considering their importance, lipid contents, proportion, and composition are widely modulated in response to environmental conditions, which is even more important under unfavorable conditions such as abiotic stresses. In recent years, technological advances have allowed for the analysis of the global lipid profile, also known as lipidomics, which has emerged as a powerful tool for the comprehensive analysis of the modulation and roles of lipids under different conditions. This review provides a current overview of plant lipidomics research, covering the different lipid classes found in plants, analytical techniques, and the main lipid-related responses under temperature, water, salt, alkali, heavy metal, nutrient deficiency, light, and oxidative stress.

show abstract

Carboxylic acid accumulation and secretion contribute to the alkali-stress tolerance of halophyte Leymus chinensis

Cited by 2 publications

References 40 publications

Regulation of Root Exudation in Wheat Plants in Response to Alkali Stress

Regulation of Root Exudation in Wheat Plants in Response to Alkali Stress

Lipidomics in Plants Under Abiotic Stress Conditions: An Overview

Contact Info

Product

Resources

About