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

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ID: 28642
2019
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Abstract
Leaf senescence plays an important role in the improvement of maize kernel yields. However, the underlying regulatory mechanisms of leaf senescence in maize are largely unknown. We isolated ZmVQ52 and studied the function of ZmVQ52 which encoded, a VQ family transcription factor. ZmVQ52 is constitutively expressed in maize tissues, and mainly expressed in the leaf; it is located in the nucleus of maize protoplasts. Four WRKY family proteins-ZmWRKY20, ZmWRKY36, ZmWRKY50, and ZmWRKY71-were identified as interacting with ZmVQ52. The overexpression of ZmVQ52 in Arabidopsis accelerated premature leaf senescence. The leaf of the ZmVQ52-overexpression line showed a lower chlorophyll content and higher senescence rate than the WT. A number of leaf senescence regulating genes were up-regulated in the ZmVQ52-overexpression line. Additionally, hormone treatments revealed that the leaf of the ZmVQ52-overexpressed line was more sensitive to salicylic acid (SA) and jasmonic acid (JA), and had an enhanced tolerance to abscisic acid (ABA). Moreover, a transcriptome analysis of the ZmVQ52-overexpression line revealed that ZmVQ52 is mainly involved in the circadian pathway and photosynthetic pathways.
Reference Key
yu2019overexpressionplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yu, Tingting;Lu, Xuefeng;Bai, Yang;Mei, Xiupeng;Guo, Zhifeng;Liu, Chaoxian;Cai, Yilin;
Journal PloS one
Year 2019
DOI
10.1371/journal.pone.0221949
URL
Keywords Keywords not found

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