Molecular evolution of glutathione peroxidase (Gpx) family genes in desert poplar (Populus euphratica Oliv.)

Meng, Kuibin; Wu, Yuxia

doi:10.1007/s11295-017-1127-y

Cited by 4 publications

(3 citation statements)

References 45 publications

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“…For instance, the phospholipid hydroperoxide glutathione peroxidase 1 proteins (GPXs) are a group of proteins that protect cells from oxidative damage generated by a reactive oxygen species (ROS; Rodriguez Milla, Maurer, Huete, & Gustafson, 2003). Five GPX genes have been identified in the desert poplar Populus euphratica (Meng & Wu, 2017). Strong signals of balancing selection/local adaptation were detected in the peGPX1 gene: an excess of mid‐frequency alleles, high intraspecific nucleotide diversity (distributed in the upper tail of the simulated neutral model), and extensive LD.…”

Section: Discussionmentioning

confidence: 99%

Genetic adaptation of Tibetan poplar (Populus szechuanica var. tibetica) to high altitudes on the Qinghai–Tibetan Plateau

Zheng

Li-zhi

Sang

et al. 2020

Ecology and Evolution

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Plant adaptation to high altitudes has long been a substantial focus of ecological and evolutionary research. However, the genetic mechanisms underlying such adaptation remain poorly understood. Here, we address this issue by sampling, genotyping, and comparing populations of Tibetan poplar, Populus szechuanica var. tibetica , distributed from low (~2,000 m) to high altitudes (~3,000 m) of Sejila Mountain on the Qinghai–Tibet Plateau. Population structure analyses allow clear classification of two groups according to their altitudinal distributions. However, in contrast to the genetic variation within each population, differences between the two populations only explain a small portion of the total genetic variation (3.64%). We identified asymmetrical gene flow from high‐ to low‐altitude populations. Integrating population genomic and landscape genomic analyses, we detected two hotspot regions, one containing four genes associated with altitudinal variation, and the other containing ten genes associated with response to solar radiation. These genes participate in abiotic stress resistance and regulation of reproductive processes. Our results provide insight into the genetic mechanisms underlying high‐altitude adaptation in Tibetan poplar.

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Section: Discussionmentioning

confidence: 99%

Genetic adaptation of Tibetan poplar (Populus szechuanica var. tibetica) to high altitudes on the Qinghai–Tibetan Plateau

Zheng

Li-zhi

Sang

et al. 2020

Ecology and Evolution

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“…Research in desert poplar ( Populus euphratica Oliv.) suggested that the GPX gene family genes with induced gene expression pattern belong to a single gene family and are abiotic defend responding to salt stress [ 22 ]. Exceptional, in some cases, the expression levels of specific GPX genes may decrease in specific stressed plants, for instance, several GPX genes showed reduced expression in response to drought stress in sorghum ( Sorghum bicolor L.), which implies that GPX genes may be involved in the activation of multiple downstream pathways [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

The Glutathione Peroxidase Gene Family in Nitraria sibirica: Genome-Wide Identification, Classification, and Gene Expression Analysis under Stress Conditions

Lian

Zhang

Hao

et al. 2023

Genes

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Plant glutathione peroxidases (GPXs) are the main enzymes in the antioxidant defense system that sustain H2O2 homeostasis and normalize plant reaction to abiotic stress conditions. However，the genome-wide identification of the GPX gene family and its responses to environmental stresses, especially salt stress, in Nitraria sibirica, which is a shrub that can survive in saline environments, has not yet been reported. Here, we first report the genome-wide analysis of the GPX gene family in N. sibirica, leading to a total of seven NsGPX genes that are distributed on six of the twelve chromosomes. Phylogenetic analysis showed that NsGPX genes were grouped into four major groups (Group I-IV). Three types of cis-acting elements were identified in the NsGPX promoters, mainly related to hormones and stress response. The quantitative real-time PCR (qRT-PCR) analysis indicated that NsGPX1 and NsGPX3 were significantly up-regulated in stem and leaf, while NsGPX7 transcriptionally in root in response to salt stress. The current study identified a total seven NsGPX genes in N. sibirica via genome-wide analysis, and discovered that NsGPXs may play an important role in response to salt stress. Taken together, our findings provide a basis for further functional studies of NsGPX genes, especially in regarding to the resistance to salt stress of this halophyte plant N. sibirica, eventually aid in the discovery of new methods to restore overtly saline soil.

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“…Due to the high adaptability of P. euphratica to the extreme desert environment, it has become an important model species for studying the effects of abiotic stresses on trees ( 8 ). Research on the molecular biology of P. euphratica has made progress in genetic diversity ( 9 ) and functional genes, genome, and transcriptomics ( 10 ). With the development of microbiology research, researchers found that the plant’s endophytic microorganisms have a close relationship with the host and have a positive impact on the adaptability to the host’s special environment.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of the Endophytic Bacterial Diversity of Populus euphratica Oliv. in Environments of Different Salinity Intensities

et al. 2022

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Euphrates poplar ( Populus euphratica Oliv.), as the only tree species that grows in the desert, has tenacious vitality with the characteristics of cold tolerance, drought tolerance, salt-alkali tolerance, and wind-sand resistance. P. euphratica has a long growth cycle and a high growth rate, which can break wind, fix sand, green the environment, and protect farmland, making it an important afforestation tree species in arid and semiarid areas. The area of P. euphratica in Xinjiang accounts for 91.1% of its area in China.

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Molecular evolution of glutathione peroxidase (Gpx) family genes in desert poplar (Populus euphratica Oliv.)

Cited by 4 publications

References 45 publications

Genetic adaptation of Tibetan poplar (Populus szechuanica var. tibetica) to high altitudes on the Qinghai–Tibetan Plateau

Genetic adaptation of Tibetan poplar (Populus szechuanica var. tibetica) to high altitudes on the Qinghai–Tibetan Plateau

The Glutathione Peroxidase Gene Family in Nitraria sibirica: Genome-Wide Identification, Classification, and Gene Expression Analysis under Stress Conditions

Comparative Analysis of the Endophytic Bacterial Diversity of Populus euphratica Oliv. in Environments of Different Salinity Intensities

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