Overexpression of the maize transcription factor ZmVQ52 accelerates leaf senescence in Arabidopsis

Yu, Tingting; Lü, Xuefeng; Bai, Yang; Mei, Xiupeng; Guo, Zaoyang; Liu, Chaoxian; Cai, Yingfan

doi:10.1371/journal.pone.0221949

Cited by 21 publications

(11 citation statements)

References 40 publications

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“…The results showed that the expression of Zm00001d046728 was also repressed by salt stress but was not significantly different in the varying range between the two lines (Supporting Information: Figure ). Moreover, Zm00001d046728 encodes a VQ family transcription factor, which was involved in regulating leaf senescence (Yu, Lu, et al, 2019). Thus, we further analyzed the expression patterns of Zm00001d046729 in NIL −082 and NIL −Ye107 under salt stress condition and found that the expression of Zm00001d046729 was more easily to be induced in NIL −082 than in NIL ‐Ye107 plant (Figure 1a).…”

Section: Resultsmentioning

confidence: 99%

Salt Tolerant Gene 1 contributes to salt tolerance by maintaining photosystem II activity in maize

Mei

Zhao

Bai

et al. 2023

Plant Cell & Environment

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Salt stress is a major environmental factor limiting crop growth and productivity. Here, we show that Salt‐Tolerant Gene 1 (ZmSTG1) contributes to salt tolerance by maintaining photosystem activity in maize. ZmSTG1 encodes an endoplasmic reticulum localized protein and retrotransposon insertion in the promoter region causes differential expression levels in maize inbred lines. Overexpression of ZmSTG1 improved plant growth vigor, and knockout of ZmSTG1 weakened plant growth under normal and salt stress conditions. Transcriptome and metabolome analyses indicated that ZmSTG1 might regulate the expression of lipid trafficking‐related genes dependent on the abscisic acid (ABA) signaling pathway, thereby increasing the galactolipids and phospholipid concentrations in the photosynthetic membrane under salt stress. Chlorophyll fluorescence parameters showed that the knockout of ZmSTG1 led to significant impairment of plant photosystem II (PSII) activity under normal and salt stress conditions, whereas overexpression of ZmSTG1 dramatically improved plant PSII activity under salt stress conditions. We also demonstrated that the application of the salt‐tolerant locus could enhance salt tolerance in hybrid maize plants. Taken together, we propose that ZmSTG1 may modulate the lipid composition in the photosynthetic membrane by affecting the expression of lipid trafficking‐related genes to maintain the photosynthetic activity of plants under salt stress.

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Section: Resultsmentioning

confidence: 99%

Salt Tolerant Gene 1 contributes to salt tolerance by maintaining photosystem II activity in maize

Mei

Zhao

Bai

et al. 2023

Plant Cell & Environment

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“…Our results revealed that TaWRKY40‐D plays roles in both JA‐ and ABA‐induced leaf senescence in wheat, which implies that TaWRKY40‐D may function as a key regulator of the cross‐talk between the JA and ABA signalling pathways. Although cross‐talk between JA and ABA has been previously described in Arabidopsis and maize, it is still unclear in wheat (Yu et al 2019; Zhang et al 2020b). Moreover, as TaWRKY40‐D itself is induced by the onset of leaf senescence, JA and ABA, we speculate that there is a complex feedback loop among JA‐ and ABA‐induced leaf senescence and TaWRKY40‐D , which is implicated in the fine‐tuning of leaf senescence timing and needs to be further investigated in detail in wheat.…”

Section: Discussionmentioning

confidence: 99%

A WRKY transcription factor, TaWRKY40‐D, promotes leaf senescence associated with jasmonic acid and abscisic acid pathways in wheat

et al. 2020

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Leaf senescence is a complex and precise regulatory process that is correlated with numerous internal and environmental factors. Leaf senescence is tightly related to the redistribution of nutrients, which significantly affects productivity and quality, especially in crops. Evidence shows that the mediation of transcriptional regulation by WRKY transcription factors is vital for the fine‐tuning of leaf senescence. However, the underlying mechanisms of the involvement of WRKY in leaf senescence are still unclear in wheat. Using RNA sequencing data, we isolated a novel WRKY transcription factor, TaWRKY40‐D, which localizes in the nucleus and is basically induced by the progression of leaf senescence. TaWRKY40‐D is a promoter of natural and dark‐induced leaf senescence in transgenic Arabidopsis thaliana and wheat. We also demonstrated a positive response of TaWRKY40‐D in wheat upon jasmonic acid (JA) and abscisic acid (ABA) treatment. Consistent with this, the detached leaves of TaWRKY40‐D VIGS (virus‐induced gene silencing) wheat plants showed a stay‐green phenotype, while TaWRKY40‐D overexpressing Arabidopsis plants showed premature leaf senescence after JA and ABA treatment. Moreover, our results revealed that TaWRKY40‐D positively regulates leaf senescence, possibly by altering the biosynthesis and signalling of JA and ABA pathway genes. Together, our results suggest a new regulator of JA‐ and ABA‐related leaf senescence, as well as a new candidate gene that can be used for molecular breeding in wheat.

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“…Leaf senescence is another developmental process potentially regulated by VQ proteins. The overexpression of maize ZmVQ52 in Arabidopsis accelerated premature leaf senescence ( Yu et al, 2019 ). Figure 1A summarizes what has been reported on the involvement of VQ proteins and WRKY transcription factors in regulating different processes throughout plant life cycle.…”

Section: Vq Proteins Regulation Of Developmentmentioning

confidence: 99%

“…The relationship of the senescence process and the production of NO is somehow controversial as both positive or negative correlation has been reported depending upon the organ or being natural or dark-induced ( Mishina et al, 2007 ; Ma et al, 2010 ; Niu and Guo, 2012 ; Liu and Guo, 2013 ; Du et al, 2014 ; Bruand and Meilhoc, 2019 ). Linked to ROS and NO action, ZmVQ52 associated to WRKY proteins regulate leaf senescence in maize ( Yu et al, 2019 ). Moreover, around 32% of the VQ genes and more than half of the WRKY genes were upregulated in Arabidopsis senescing leaves ( Schmid et al, 2005 ).…”

Section: Molecular Oxygen and Nitric Oxide Regulation On The Arabidopmentioning

confidence: 99%

Valine-Glutamine Proteins in Plant Responses to Oxygen and Nitric Oxide

2021

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Multigene families coding for valine-glutamine (VQ) proteins have been identified in all kind of plants but chlorophytes. VQ proteins are transcriptional regulators, which often interact with WRKY transcription factors to regulate gene expression sometimes modulated by reversible phosphorylation. Different VQ-WRKY complexes regulate defense against varied pathogens as well as responses to osmotic stress and extreme temperatures. However, despite these well-known functions, new regulatory activities for VQ proteins are still to be explored. Searching public Arabidopsis thaliana transcriptome data for new potential targets of VQ-WRKY regulation allowed us identifying several VQ protein and WRKY factor encoding genes that were differentially expressed in oxygen-related processes such as responses to hypoxia or ozone-triggered oxidative stress. Moreover, some of those were also differentially regulated upon nitric oxide (NO) treatment. These subsets of VQ and WRKY proteins might combine into different VQ-WRKY complexes, thus representing a potential regulatory core of NO-modulated and O2-modulated responses. Given the increasing relevance that gasotransmitters are gaining as plant physiology regulators, and particularly considering the key roles exerted by O2 and NO in regulating the N-degron pathway-controlled stability of transcription factors, VQ and WRKY proteins could be instrumental in regulating manifold processes in plants.

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Overexpression of the maize transcription factor ZmVQ52 accelerates leaf senescence in Arabidopsis

Cited by 21 publications

References 40 publications

Salt Tolerant Gene 1 contributes to salt tolerance by maintaining photosystem II activity in maize

Salt Tolerant Gene 1 contributes to salt tolerance by maintaining photosystem II activity in maize

A WRKY transcription factor, TaWRKY40‐D, promotes leaf senescence associated with jasmonic acid and abscisic acid pathways in wheat

Valine-Glutamine Proteins in Plant Responses to Oxygen and Nitric Oxide

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