Thriving under Stress: How Plants Balance Growth and the Stress Response

Zhang, Heng; Zhao, Yanping; Zhu, Jian‐Kang

doi:10.1016/j.devcel.2020.10.012

Cited by 373 publications

(314 citation statements)

References 213 publications

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“…At checkpoint III, we found that, after the water stress was inflicted, the survival rate of plants that had experienced high Cu in the seedling stage was drastically increased in comparison to plants that were exposed to low Cu (Figure 3B). Because plant responses to low water availability include dehydration avoidance and dehydration tolerance (Basu et al, 2016; Gupta et al, 2020; Zhang et al, 2020), we further tested whether both categories are affected by high Cu. Leaf temperature reflects the strength of transpiration with higher temperatures indicating lower levels of transpiration (Wang et al, 2018a).…”

Section: Resultsmentioning

confidence: 99%

“…Using reverse transcription coupled quantitative PCR (RT-qPCR), we examined expression pattern of six representative drought-responsive genes, including RESPONSIVE TO DEHYDRATION 20 ( RD20 ), RD26 , RD29A , COLD REGULATED 15B ( COR15B ), HYPERSENSITIVE TO ABA 1 ( HAB1 ), DRE-BINDING PROTEIN 2A ( DREB2A ) (Umezawa et al, 2010; Chen et al, 2020; Zhang et al, 2020; Zhu et al, 2020). We found that after drought treatment, these hallmark drought-responsive genes were all induced to significantly higher levels (more than twofold) in plants that had experienced high Cu in the seedling stage than in the control plants (Figure 3F).…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Drought resistance is a complex trait that proceeds through several mechanisms to sense water-deficiency and initiate various coping strategies (Gupta et al, 2020; Zhang et al, 2020). ABA is the main osmostress hormone that regulates molecular and physiological processes, including stomatal closure, root development and architecture, and metabolic reprograming, to promote drought tolerance in plants (Nambara and Marion-Poll, 2005; Umezawa et al, 2010; Vishwakarma et al, 2017; Zhang et al, 2020). However, high ABA is known to actively suppress growth and regulation of ABA level is crucial for maintaining a balance between growth and stress responses (Xiong and Zhu, 2003; Nambara and Marion-Poll, 2005; McAdam and Brodribb, 2018; Zhang et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Due to the autotrophic sessile lifestyle, plants are frequently exposed to environmental conditions that are suboptimal for growth or even threaten their survival. Plants have evolved complex mechanisms to accurately monitor the environment and dynamically adjust metabolism and growth to cope with the abiotic stresses (Claeys and Inzé, 2013; Zhang et al, 2020). Drought is one of the major factors limiting plant habitation and how plants balance growth and drought tolerance has been extensively studied in the past decades (Boyer, 1982; Basu et al, 2016; Gupta et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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The Copper Responsive Transcription Factor SPL7 Represses Key Abscisic Acid Biosynthetic Genes to Balance Growth and Drought Tolerance

Yang

et al. 2021

Preprint

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Plants adapt to adverse environments by turning on defense against abiotic stresses, which is mainly orchestrated by the phytohormone abscisic acid (ABA). But how ABA homeostasis is modulated to balance growth and stress responses is still largely unknown. Here we report that prior treatment of Arabidopsis seedling with high copper retardates growth but enhances draught tolerance at later stages by modulating ABA accumulation. Subsequent genetic, physiological, transcriptomic, and molecular investigations revealed that the copper responsive transcription factor SQUAMOSA PROMOTER BINDING PROTEIN-LIKE 7 (SPL7) is a strong regulator of ABA accumulation. We showed that SPL7 is destabilized by high copper and consistently suppresses genes encoding three key oxygenases in the ABA biosynthetic pathway of land plants via binding to the GTAC copper response motifs in their promoters. These results revealed a new mechanism whereby copper availability, inversely reflected by SPL7 abundance, modulates de novo ABA biosynthesis to balance growth and drought tolerance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Copper Responsive Transcription Factor SPL7 Represses Key Abscisic Acid Biosynthetic Genes to Balance Growth and Drought Tolerance

Yang

et al. 2021

Preprint

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Identification and expression analysis of LEA gene family members in pepper (Capsicum annuum L.)

Zhao,

Hao,

Dong

et al. 2023

FEBS Open Bio

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Pepper (Capsicum annuum L.) is an economically important crop containing capsaicinoids in the seed and placenta, which has various culinary, medical, and industrial applications. Late embryogenesis abundant (LEA) proteins are a large group of hydrophilic proteins participating in the plant stress response and seed development. However, to date there have been no genome‐wide analyses of the LEA gene family in pepper. In the present study, 82 LEA genes were identified in the C. annuum genome and classified into nine subfamilies. Most CaLEA genes contain few introns (≤ 2) and are unevenly distributed across 10 chromosomes. Eight pairs of tandem duplication genes and two pairs of segmental duplication genes were identified in the LEA gene family; these duplicated genes were highly conserved and may have performed similar functions during evolution. Expression profile analysis indicated that CaLEA genes exhibited different tissue expression patterns, especially during embryonic development and stress response, particularly in cold stress. Three out of five CaLEA genes showed induced expression upon cold treatment. In summary, we have comprehensively reviewed the LEA gene family in pepper, offering a new perspective on the evolution of this family.

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Calcium Hexacyanoferrate Nanozyme Enhances Plant Stress Resistance by Oxidative Stress Alleviation and Heavy Metal Removal

Shen,

Yang,

Dai

et al. 2024

Advanced Materials

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Oxidative damage, exacerbated by the excessive accumulation of reactive oxygen species (ROS), profoundly inhibits both crop growth and yield. Herein, a biocompatible nanozyme, calcium hexacyanoferrate nanoparticles (CaHCF NPs), targeting ROS is developed, to mitigate oxidative damage and sequestrate heavy metal ions during plant growth. Uniquely, CaHCF NPs feature multifaced enzyme‐like activities, involving superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione peroxidase, thiol peroxidase, and ascorbate peroxidase, which enable them to neutralize excessive ROS. Furthermore, CaHCF NPs promote calcium‐cadmium exchange process, diminishing the uptake of heavy metals. Importantly, 120 µg mL−1 of CaHCF NPs alleviate the inhibitory effects of hydrogen peroxide and cadmium chloride on Arabidopsis and tomato. The activities of SOD, POD, and CAT increase by 46.2%, 74.4%, and 48.3%, respectively, meanwhile the glutathione level rises by 72.4% in Arabidopsis under cadmium stress. Moreover, CaHCF NPs boost the expression of genes associated with antioxidation, heavy metal detoxification, nutrient transport, and stress resistance. These findings unveil the significant potential of nanoplatforms equipped with nanozymes in alleviating oxidative stress in plants, which not only regulate crop growth but also substantially ameliorate yield and quality, heralding a new era in agricultural nanotechnology.

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Thriving under Stress: How Plants Balance Growth and the Stress Response

Cited by 373 publications

References 213 publications

The Copper Responsive Transcription Factor SPL7 Represses Key Abscisic Acid Biosynthetic Genes to Balance Growth and Drought Tolerance

The Copper Responsive Transcription Factor SPL7 Represses Key Abscisic Acid Biosynthetic Genes to Balance Growth and Drought Tolerance

Identification and expression analysis of LEA gene family members in pepper (Capsicum annuum L.)

Calcium Hexacyanoferrate Nanozyme Enhances Plant Stress Resistance by Oxidative Stress Alleviation and Heavy Metal Removal

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