华北农学报 ›› 2022, Vol. 37 ›› Issue (4): 11-19. doi: 10.7668/hbnxb.20193022

所属专题: 杂粮作物 盐碱胁迫 生物技术 热点文章

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

谷子SiPRR73基因的光温调控模式及非生物胁迫响应特性

闫留延1, 李剑峰1, 张世文1, 张博1, 王永芳2, 张小梅1, 祖超凡1, 王振山1, 桑璐曼1, 何占祥1, 贾小平1, , 董志平2   

  1. 1 河南科技大学 农学院,河南 洛阳 471023
    2 河北省农林科学院 谷子研究所,国家谷子改良中心,河北 石家庄 050035
  • 收稿日期:2022-03-11 出版日期:2022-08-28
  • 通讯作者: 贾小平
  • 作者简介:

    闫留延(1996- ),女,河南项城人,在读硕士,主要从事谷子资源评价与分子育种研究。

  • 基金资助:
    国家自然科学基金项目(31471569)

Regulation Pattern of Photoperiod,Temperature and Abiotic Stress on SiPRR73 in Foxtail Millet

YAN Liuyan1, LI Jianfeng1, ZHANG Shiwen1, ZHANG Bo1, WANG Yongfang2, ZHANG Xiaomei1, ZU Chaofan1, WANG Zhenshan1, SANG Luman1, HE Zhanxiang1, JIA Xiaoping1, , DONG Zhiping2   

  1. 1 College of Agriculture,Henan University of Science and Technology,Luoyang 471023,China
    2 Institute of Millet Crops,Hebei Academy of Agriculture and Forestry Sciences,National Millet Improvement Center,Shijiazhuang 050035,China
  • Received:2022-03-11 Published:2022-08-28
  • Contact: JIA Xiaoping

摘要:

利用RT-PCR技术从延谷11号谷子中克隆SiPRR73基因,通过系统分析SiPRR73组织表达特异性,对不同光周期处理、不同光温组合处理以及5种非生物胁迫处理的响应特点,揭示光周期、温度对SiPRR73的调控模式及SiPRR73对非生物胁迫的应答模式。结果表明,从延谷11号克隆得到SiPRR73基因2 928 bp的cDNA序列,包含2 283 bp的CDS区,编码760个氨基酸;SiPRR73蛋白与C4家族作物糜子、哈氏黍、高粱、玉米PRR73蛋白具有较近的进化关系。 SiPRR73在顶端第2片叶中表达水平最高,在根、茎、穗部表达水平较低。短日照、长日照条件下该基因均表现光照期表达水平高于黑暗期的特点,且整个营养生长期短日照条件下表达水平明显低于长日照,SiPRR73受光诱导表达和光周期调控。温度决定SiPRR73表达峰的数目,光周期决定SiPRR73表达峰出现的时间,光周期和温度共同参与了SiPRR73的表达调控。PEG和低温胁迫总体上诱导SiPRR73表达,NaCl在胁迫早期诱导该基因表达,后期总体表现为抑制状态,Fe胁迫则早期抑制该基因表达,后期总体诱导其表达,SiPRR73对ABA胁迫的响应特点接近NaCl。以上研究表明,谷子SiPRR73表达具有光依赖性,光周期和温度以互作模式调控SiPRR73表达,推测SiPRR73参与了谷子对不同光温环境的适应性调节过程,并且在应对干旱、低温、ABA、NaCl、Fe胁迫过程中发挥了一定作用。

关键词: 谷子, PRR73, 光周期, 温度, 非生物胁迫

Abstract:

The SiPRR73 gene was cloned from Yangu 11 using RT-PCR technology,and through analyzing tissue-specific expression,responsive features of SiPRR73 to different photoperiods,photo-thermal combinational treatments and five abiotic stress treatments,the regulation mode of photoperiod and temperature on SiPRR73,and the responsive pattern of SiPRR73 to abiotic stresses in foxtail millet were explored. The results showed that totally 2 928 bp cDNA sequence of SiPRR73 was obtained from Yangu 11,which included 2 283 bp CDS region,encoding 760 amino acids. The SiPRR73 proteins of C4 crops including Panicum miliaceum,Panicum hallii,Sorghum bicolor and Zea mays showed relatively close relationship with SiPRR73. The second parietal leaf was the highest expression tissue of SiPRR73,but the expression level at root,stem and panicle tissues was relatively lower. The expression level of SiPRR73 was higher at light period than that at dark period under both short-day and long-day conditions,and during the whole vegetative growth phase,SiPRR73 showed higher expression level under long-day compared to short-day,which indicated that the expression of SiPRR73 was induced by light and controlled by photoperiod. The temperature determined expression peak number of SiPRR73 and the photoperiod determined occurrence time of expression peaks,so temperature and photoperiod participated in regulating of SiPRR73 expression mutually. PEG and low temperature stresses induced SiPRR73 expression totally,NaCl induced SiPRR73 expression at early stress stage,but inhibited it at later stress stage. Fe stress inhibited SiPRR73 expression at early stage,but induced it at later stage. ABA stress caused the close responsive feature of SiPRR73 to NaCl. This study indicated that SiPRR73 showed light-dependent expression feature,and photoperiod and temperature regulated SiPRR73 by interaction pattern,suggesting that SiPRR73 participated in adaptability regulation process to different photo-thermal conditions and might play a certain role in coping with drought,low temperature,ABA,NaCl and Fe stresses in foxtail millet.

Key words: Foxtail millet, PRR73, Photoperiod, Temperature, Abiotic stress

引用本文

闫留延, 李剑峰, 张世文, 张博, 王永芳, 张小梅, 祖超凡, 王振山, 桑璐曼, 何占祥, 贾小平, 董志平. 谷子SiPRR73基因的光温调控模式及非生物胁迫响应特性[J]. 华北农学报, 2022, 37(4): 11-19. doi: 10.7668/hbnxb.20193022.

YAN Liuyan, LI Jianfeng, ZHANG Shiwen, ZHANG Bo, WANG Yongfang, ZHANG Xiaomei, ZU Chaofan, WANG Zhenshan, SANG Luman, HE Zhanxiang, JIA Xiaoping, DONG Zhiping. Regulation Pattern of Photoperiod,Temperature and Abiotic Stress on SiPRR73 in Foxtail Millet[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(4): 11-19. doi: 10.7668/hbnxb.20193022.

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