ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (S1): 89-93. doi: 10.7668/hbnxb.20192358

Special Issue: Corn

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Different Nuclear Backgrounds on Mitochondrial Complex Activity of CMS-C in Maize

ZHAO Changyun1,2, ZHANG Qiming1, SHI Haichun1,2, YU Xuejie1,2, DONG Li1, XIA Wei2, KE Yongpei1,2   

  1. 1. College of Agronomy, Sichuan Agricultural University, Wenjiang 611130, China;
    2. Sichuan Zhenghong Bio Co., Ltd., Chengdu 610213, China
  • Received:2021-05-19 Published:2021-12-28

Abstract: In order to explore the influence of mitochondrial complex activity on the fertility of C-type male sterile lines in maize under different nuclear backgrounds, and to clarify its relationship with anther abortion. Plant mitochondrial respiratory chain complex enzyme linked immunoassay kit was used to determine the activities of 5 mitochondrial complex in different stages of anther development, using homogeneous heterogenic male sterile lines K932S and K169S, restorer line K932R and maintainer line K169 as materials. Results showed that in addition to the period of pollen mother cell complex Ⅱ, Ⅳ, the remaining period of sterile cytoplasm complex Ⅰ, Ⅱ, Ⅳ activity under the background of K169 nuclear was significantly higher than K932, most of the time the activity of complex Ⅲ, Ⅴ, on the other hand, when there was a restoring genes but K932R might change the part of the activity of sterile cytoplasm during different mitochondrial complex. The activity of sterile cytoplasmic complexes Ⅱ, Ⅲ and Ⅴ was significantly lower than that of normal fertile cytoplasm at the diad stage, while the activity of five complexes at most other stages was the opposite. It can be seen that the nuclear background have a significant effect on the activity of different mitochondrial complexes of CMS-C in maize at different anther development stages. Under the same nuclear background, the activity of cytoplasmic complexes Ⅱ, Ⅲ and V at the diploid stage was significantly lower than that of normal cytoplasm, which might be closely related to CMS-C drug abortion.

Key words: Maize, CMS-C, Mitochondrial complex

CLC Number: 

Cite this article

ZHAO Changyun, ZHANG Qiming, SHI Haichun, YU Xuejie, DONG Li, XIA Wei, KE Yongpei. Effects of Different Nuclear Backgrounds on Mitochondrial Complex Activity of CMS-C in Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(S1): 89-93. doi: 10.7668/hbnxb.20192358.

share this article