Influence of aluminum at low pH on the rhizosphere processes of Masson pine (Pinus massoniana Lamb)

Wang, Ping; Zhou, Shaoxia; Li, Ao; Xie, Linbei

doi:10.1007/s10725-022-00816-x

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…An antagonistic relationship exists between GA 3 and ABA, which regulates various plant development processes, including root growth [ 83 ]. Previous studies have demonstrated that exposure to Al leads to a reduction in GA 3 content and an increase in ABA content in the roots of Pinus massoniana [ 84 ]. However, in the present study, the GA 3 level in peanut roots increased with increasing ABA content under Al toxicity stress.…”

Section: Discussionmentioning

confidence: 99%

Physiological Mechanism through Which Al Toxicity Inhibits Peanut Root Growth

Shi,

Zhao,

Zhang

et al. 2024

Plants

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Al (Aluminum) poisoning is a significant limitation to crop yield in acid soil. However, the physiological process involved in the peanut root response to Al poisoning has not been clarified yet and requires further research. In order to investigate the influence of Al toxicity stress on peanut roots, this study employed various methods, including root phenotype analysis, scanning of the root, measuring the physical response indices of the root, measurement of the hormone level in the root, and quantitative PCR (qPCR). This research aimed to explore the physiological mechanism underlying the reaction of peanut roots to Al toxicity. The findings revealed that Al poisoning inhibits the development of peanut roots, resulting in reduced biomass, length, surface area, and volume. Al also significantly affects antioxidant oxidase activity and proline and malondialdehyde contents in peanut roots. Furthermore, Al toxicity led to increased accumulations of Al and Fe in peanut roots, while the contents of zinc (Zn), cuprum (Cu), manganese (Mn), kalium (K), magnesium (Mg), and calcium (Ca) decreased. The hormone content and related gene expression in peanut roots also exhibited significant changes. High concentrations of Al trigger cellular defense mechanisms, resulting in differentially expressed antioxidase genes and enhanced activity of antioxidases to eliminate excessive ROS (reactive oxygen species). Additionally, the differential expression of hormone-related genes in a high-Al environment affects plant hormones, ultimately leading to various negative effects, for example, decreased biomass of roots and hindered root development. The purpose of this study was to explore the physiological response mechanism of peanut roots subjected to aluminum toxicity stress, and the findings of this research will provide a basis for cultivating Al-resistant peanut varieties.

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Section: Discussionmentioning

confidence: 99%

Physiological Mechanism through Which Al Toxicity Inhibits Peanut Root Growth

Shi,

Zhao,

Zhang

et al. 2024

Plants

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“…Also, extensive phenotypic differences have been found between families from different provinces based on the evaluation considering tree height, diameter at breast height (DBH), volume and other growth indicators (Liu et al, 2020;Zhang et al, 2022). Previous studies have focused more on the metabolism of Masson pine under different stress conditions (Shi et al, 2022;Wang et al, 2022). However, an in-depth analysis of the metabolic differences among Masson pine families of different provinces is lacking.…”

Section: Introductionmentioning

confidence: 99%

Characterization of 35 Masson pine (Pinus massoniana) half-sib families from two provinces based on metabolite properties

Quan

Zhao²,

Zhao³

et al. 2023

Front. Ecol. Evol.

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Plant metabolism is an important functional trait, and its metabolites have physiological and ecological functions to adapt to the growth environment. However, the physiological and ecological functions of metabolites from different provinces of the same plant species are still unclear. Therefore, this study aimed to determine whether metabolites from different provinces of Masson pine (Pinus massoniana Lamb.) have the corresponding metabolic traits. The gas chromatography–mass spectrometry technique and metabonomic analysis methods were used to characterize 35 Masson pine half-sib families from two provinces. A total of 116 metabolites were putatively identified in 35 families of Masson pine, among which the average content of organic acids was the highest, followed by saccharides and alcohols, and phosphoric acids. Comparative analysis of metabolite groups showed that organic acids, amines, and others were significantly different between the Masson pine families from Guangxi and Guizhou provinces. Six differential metabolites were found between the provinces from Guizhou and Guangxi, namely caffeic acid, L-ascorbic acid, gentiobiose, xylitol, d-pinitol, and β-sitosterol. The most significantly enriched pathways among differentially expressed metabolites between the two provinces were steroid biosynthesis, phenylpropanoid biosynthesis, glutathione metabolism, pentose and glucuronate interconversions. Overall, the results showed that Masson pine half-sib families from different geographical provinces have different metabolite profiles and their metabolites are affected by geographical provenance and growth environment adaptability. This study revealed that the breeding of Masson pine families from different provinces changed the metabolite profiles, providing a reference for the multipurpose breeding of Masson pine.

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