Strontium-induced mineral imbalance, cell death, and reactive oxygen species generation in &lt;i&gt;Arabidopsis thaliana&lt;/i&gt;

Nagata, Takeshi

doi:10.3117/plantroot.17.36

Plant Root

2023

DOI: 10.3117/plantroot.17.36

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Strontium-induced mineral imbalance, cell death, and reactive oxygen species generation in <i>Arabidopsis thaliana</i>

Takeshi Nagata

Abstract: Or ri ig gi in na al l r re es se ea ar rc ch h a ar rt ti ic cl le e R Re ev vi ie ew w a ar rt ti ic cl le e S Sh ho or rt t r re ep po or rt tNagata T 2023 Strontium-induced mineral imbalance, cell death, and reactive oxygen species generation in Arabidopsis thaliana.

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2024

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Transcriptome Analysis Revealed ZmPTOX1 Is Required for Seedling Development and Stress Tolerance in Maize

Peng,

Liang,

Qing

et al. 2024

Plants

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Plant seedling morphogenesis is considerably related to photosynthesis, pigment synthesis, and circadian periodicity during seedling development. We identified and cloned a maize zebra or crossbanding leaves mutant wk3735, which produces pale white kernels and was identified and plays a role in the equilibrium of the Redox state the in/out of ETC by active oxygen scavenging. Interestingly, it produces the zebra leaves during the production of the first seven leaves, which is apparently different from the mutation of homologs AtPTOX in Arabidopsis. It is intriguing to investigate how and why yellow crossbands (zebra leaf phenotype) emerge on leaves. As expected, chlorophyll concentration and photosynthetic efficiency both significantly declined in the yellow sector of wk3735 leaves. Meanwhile, we observed the circadian expression pattern of ZmPTOX1, which was further validated by protein interaction assays of the circadian clock protein TIM1 and ZmPTOX1. The transcriptome data of yellow (muW) and green (muG) sectors of knock-out lines and normal leaves of overexpression lines (OE) at the 5th-leaf seedling stage were analyzed. Zebra leaf etiolated sections exhibit a marked defect in the expression of genes involved in the circadian rhythm and rhythmic stress (light and cold stress) responses than green sections. According to the analysis of co-DEGs of muW vs. OE and muG vs. OE, terms linked to cell repair function were upregulated while those linked to environmental adaptability and stress response were downregulated due to the mutation of ZmPTOX1. Further gene expression level analyses of reactive oxygen species (ROS) scavenging enzymes and detection of ROS deposition indicated that ZmPTOX1 played an essential role in plant stress resistance and ROS homeostasis. The pleiotropic roles of ZmPTOX1 in plant ROS homeostasis maintenance, stress response, and circadian rhythm character may collectively explain the phenotype of zebra leaves during wk3735 seedling development.

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Transcriptome Analysis Revealed ZmPTOX1 Is Required for Seedling Development and Stress Tolerance in Maize

Peng,

Liang,

Qing

et al. 2024

Plants

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Strontium-induced mineral imbalance, cell death, and reactive oxygen species generation in <i>Arabidopsis thaliana</i>

Abstract: Or ri ig gi in na al l r re es se ea ar rc ch h a ar rt ti ic cl le e R Re ev vi ie ew w a ar rt ti ic cl le e S Sh ho or rt t r re ep po or rt tNagata T 2023 Strontium-induced mineral imbalance, cell death, and reactive oxygen species generation in Arabidopsis thaliana.

Cited by 1 publication

References 46 publications

Transcriptome Analysis Revealed ZmPTOX1 Is Required for Seedling Development and Stress Tolerance in Maize

Transcriptome Analysis Revealed ZmPTOX1 Is Required for Seedling Development and Stress Tolerance in Maize

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