Chinese Bulletin of Botany ›› 2021, Vol. 56 ›› Issue (6): 676-686.DOI: 10.11983/CBB21036

• EXPERIMENTAL COMMUNICATIONS • Previous Articles     Next Articles

Analysis on the Evolution and Transcription Activation Activity of ABI4 in Brassicaceae

Wenjing Zhang1, Xiaomeng Yang1, Kan Gao1, Xinyi Wei1, Xuetong Shi1, Ruixuan Wang1, Fengxia Wu2, Juqing Kang1,*()   

  1. 1College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
    2Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
  • Received:2021-02-10 Accepted:2021-08-09 Online:2021-11-01 Published:2021-11-12
  • Contact: Juqing Kang

Abstract: ABI4 is an important component of the ABA signal transduction pathway. It not only acts as a key player in ABA and GA antagonism, but also plays important roles in various aspects of ABA crosstalk with other signal chemicals. Genes regulated by ABI4 are involved in diverse processes. In this study, we got 27 homologs from 19 species in the family Brassicaceae using AthABI4 as a query, and explored their evolutionary history based on sequence polymorphism analysis, phylogenetic reconstruction, genomic synteny assay, and transcription activation activity comparison. The result revealed that ABI4 are highly conserved and might be not work as transcriptional activators independently in the Brassicaceae, which implies that the irreplaceable roles of ABI4 in plants and further research was needed to explore the molecular mechanism of its biological function.

Key words: ABI4, Brassicaceae, sequence evolution, transcriptional activation activity