Overexpression of the pear PbSPMS gene in Arabidopsis thaliana increases resistance to abiotic stress

Jiang, Xianghong; Zhan, Junyu; Wang, Qi; Wu, Xinyi; Chen, Xiaonan; Jia, Bing; Liu, Pu; Ye, Zhenfeng; Zhu, Li; Heng, Wei

doi:10.1007/s11240-019-01735-y

Cited by 8 publications

(2 citation statements)

References 31 publications

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“…A remarkable improvement in drought stress tolerance was also observed in tobacco plants overexpressing the SPDS gene, along with a reduction in MDA, lower ion leakage and ROS content [52]. Recently, Jiang et al [53] reported that transgenic Arabidopsis plants overexpressing the pear SPMS gene exhibited higher Spd and Spm levels, increased Pro content, H 2 O 2 , peroxidase (POD) activity, and soluble sugars in transgenic plants, which displayed improved resistance to both drought and salt stresses [53]. Overall, these results indicate that PAs are key regulators of the homeostasis of antioxidant compounds in plants during drought stress, which gives further support to conclusions obtained from exogenous PA application (see above).…”

Section: Drought Tolerance In Genetically Modified Plants With Altere...mentioning

confidence: 88%

Polyamines: Small Amines with Large Effects on Plant Abiotic Stress Tolerance

Alcázar

Bueno

Tiburcio

2020

Cells

151

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In recent years, climate change has altered many ecosystems due to a combination of frequent droughts, irregular precipitation, increasingly salinized areas and high temperatures. These environmental changes have also caused a decline in crop yield worldwide. Therefore, there is an urgent need to fully understand the plant responses to abiotic stress and to apply the acquired knowledge to improve stress tolerance in crop plants. The accumulation of polyamines (PAs) in response to many abiotic stresses is one of the most remarkable plant metabolic responses. In this review, we provide an update about the most significant achievements improving plant tolerance to drought, salinity, low and high temperature stresses by exogenous application of PAs or genetic manipulation of endogenous PA levels. We also provide some clues about possible mechanisms underlying PA functions, as well as known cross-talks with other stress signaling pathways. Finally, we discuss about the possible use of PAs for seed priming to induce abiotic stress tolerance in agricultural valuable crop plants.

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Section: Drought Tolerance In Genetically Modified Plants With Altere...mentioning

confidence: 88%

Polyamines: Small Amines with Large Effects on Plant Abiotic Stress Tolerance

Alcázar

Bueno

Tiburcio

2020

Cells

151

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“…Importantly, as the main component of phenols, CGA can participate in plant defense reactions in response to various abiotic stresses due to antioxidant and stress resistance of CGA [ 4 ]. For example, overexpression of PbSPMS (Spermine synthase) contributes to CGA biosynthesis in arabidopsis and improves plant resistance to drought and salt stress [ 5 ]. Recent studies have shown that human domestication of lettuce resulted in reduced quinic acid (QA; the precursor metabolite of CGA) and CGA levels in cultivated lettuce, which improves the edible properties of lettuce, but reduces its adaptability to the environment [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Genetic Architecture Underlying the Metabolites of Chlorogenic Acid Biosynthesis in Populus tomentosa

Yao

et al. 2021

IJMS

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Chlorogenic acid (CGA) plays a crucial role in defense response, immune regulation, and the response to abiotic stress in plants. However, the genetic regulatory network of CGA biosynthesis pathways in perennial plants remains unclear. Here, we investigated the genetic architecture for CGA biosynthesis using a metabolite-based genome-wide association study (mGWAS) and expression quantitative trait nucleotide (eQTN) mapping in a population of 300 accessions of Populus tomentosa. In total, we investigated 204 SNPs which were significantly associated with 11 metabolic traits, corresponding to 206 genes, and were mainly involved in metabolism and cell growth processes of P. tomentosa. We identified 874 eQTNs representing 1066 genes, in which the expression and interaction of causal genes affected phenotypic variation. Of these, 102 genes showed significant signatures of selection in three geographical populations, which provided insights into the adaptation of CGA biosynthesis to the local environment. Finally, we constructed a genetic network of six causal genes that coordinately regulate CGA biosynthesis, revealing the multiple regulatory patterns affecting CGA accumulation in P. tomentosa. Our study provides a multiomics strategy for understanding the genetic basis underlying the natural variation in the CGA biosynthetic metabolites of Populus, which will enhance the genetic development of abiotic-resistance varieties in forest trees.

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