Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (4): 11-19. doi: 10.7668/hbnxb.20193022

Special Issue: Multigrain crops Saline-alkali stress Biotechnology Hot Article

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

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

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

Cite this article

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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