浙江农业学报 ›› 2025, Vol. 37 ›› Issue (5): 977-986.DOI: 10.3969/j.issn.1004-1524.20240204

• 作物科学 • 上一篇    下一篇

玉米生物钟基因ZmPRR1-2互作蛋白质的筛选

王闻琦(), 王盼盼, 张严玲, 刘青青, 洪双双, 赵高鹏, 刘泓畅, 王翠玲()   

  1. 河南科技大学 农学院,河南 洛阳 471023
  • 收稿日期:2024-03-04 出版日期:2025-05-25 发布日期:2025-06-11
  • 作者简介:王闻琦(1998—),男,河南许昌人,硕士研究生,从事作物分子育种相关研究。E-mail:945987039@qq.com
  • 通讯作者: *王翠玲,E-mail: lywgg@126.com
  • 基金资助:
    国家自然科学基金河南省联合基金(U2004153)

Screening of proteins interacting with circadian clock gene ZmPRR1-2 in maize

WANG Wenqi(), WANG Panpan, ZHANG Yanling, LIU Qingqing, HONG Shuangshuang, ZHAO Gaopeng, LIU Hongchang, WANG Cuiling()   

  1. School of Agriculture, Henan University of Science and Technology, Luoyang 471023, Henan, China
  • Received:2024-03-04 Online:2025-05-25 Published:2025-06-11

摘要:

伪应答调节蛋白TOC1是伪应答调节因子(pseudo-response regulator, PRR)家族5个成员之一,作为生物钟中央振荡器的核心组成部分,与MYB类转录因子LHY和CCA1构成了中央振荡器的中心负反馈调控环,在生物钟系统中起着重要作用。ZmPRR1-2基因是拟南芥TOC1的同源基因,为了深入挖掘ZmPRR1-2的生物学功能,本研究利用酵母双杂交筛库技术,从前期构建的长日照诱导的热带玉米自交系的cDNA文库中筛选与ZmPRR1-2互作的蛋白质。结果表明,构建的诱饵载体pGBKT7-ZmPRR1-2对酵母菌株无毒性,且对报告基因无自激活活性。筛选鉴定出12个与ZmPRR1-2互作的蛋白质。这些候选互作蛋白质的功能涉及抗氧化反应、水缺乏响应、铝离子响应、光合作用、电子传递链、光收集、生长素激活信号通路、DNA模板转录的调控、色氨酸生物合成过程、翻译、免疫反应、凋亡信号通路的正向调节、参与蛋白质分解代谢过程的蛋白质水解等多个方面。推测ZmPRR1-2蛋白与以上蛋白质互作参与多个信号转导和代谢途径,该结果为进一步探索ZmPRR1-2基因的分子功能与调控网络奠定了基础。

关键词: 玉米, 生物钟, ZmPRR1-2, 酵母双杂交, 互作蛋白质

Abstract:

The pseudo-response regulatory protein TOC1, one of the five members of the pseudo-response regulator (PRR) family proteins, as the core component of the central oscillator of clock, together with the MYB-like transcription factors LHY and CCA1, constitute the central negative regulatory feedback loop of the central oscillator of clock, which plays an important role in the circadian clock system. The ZmPRR1-2 gene is a homologous gene of TOC1 in Arabidopsis. In order to deeply explore the biological function of ZmPRR1-2, the proteins interacting with ZmPRR1-2 was screened from the yeast cDNA library of a tropical maize inbred line induced by long-day photoperiod treatment by yeast two-hybrid technique. The results showed that the bait vector PGBKT7-ZmPRR1-2 was not toxic to yeast strain and had no self-activation effect on the reporter gene. A total of 12 proteins containing the full length interacting with ZmPRR1-2 were identified. These candidate interacting proteins were involved in many pathways, such as response to oxidative stress, response to oxidative stress, response to aluminum ion, photosynthesis, electron transport chain, light harvesting, auxin-activated signaling pathway, regulation of DNA-templated transcription, tryptophan biosynthetic process, translation, immune response, positive regulation of apoptotic signaling pathway and proteolysis involved in protein catabolic process. It is speculated that ZmPRR1-2 protein may participate in multiple signal transduction and metabolic pathways by interacting with the identified interaction proteins. The results might improve our understanding of the further study of the molecular function and regulatory mechanism of ZmPRR1-2.

Key words: maize, circadian, ZmPRR1-2, yeast two-hybrid system, interacting protein

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