J Integr Plant Biol. ›› 2022, Vol. 64 ›› Issue (7): 1297-1302.DOI: 10.1111/jipb.13273

• Breakthrough Report •     Next Articles

UBA domain protein SUF1 interacts with NatA-complex subunit NAA15 to regulate thermotolerance in Arabidopsis

Ze‐Ting Song1,3, Xiao‐Jie Chen2, Ling Luo3, Feifei Yu4, Jian‐Xiang Liu1* and Jia‐Jia Han1,2,3*   

  1. 1 State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
    2 Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China
    3 Laboratory of Ecology and Evolutionary Biology, State Key Laboratory for Conservation and Utilization of Bio‐Resources in Yunnan, Yunnan University, Kunming 650500, China
    4 College of Grassland Science and Technology, China Agricultural University, Beijing 100083, China

    *Correspondences: Jian‐Xiang Liu (jianxiangliu@zju.edu.cn); Jia‐Jia Han (hanjiajia@ynu.edu.cn, Dr. Han is responsible for the distribution of materials associated with this article)
  • Received:2022-04-20 Accepted:2022-05-05 Online:2022-06-07 Published:2022-07-01

Abstract: During recovery from heat stress, plants clear away the heat-stress-induced misfolded proteins through the ubiquitin-proteasome system (UPS). In the UPS, the recognition of substrate proteins by E3 ligase can be regulated by the N-terminal acetyltransferase A (NatA) complex. Here, we determined that Arabidopsis STRESS-RELATED UBIQUITIN-ASSOCIATED-DOMAIN PROTEIN FACTOR 1 (SUF1) interacts with the NatA complex core subunit NAA15 and positively regulates NAA15. The suf1 and naa15 mutants are sensitive to heat stress; the NatA substrate NSNC1 is stabilized in suf1 mutant plants during heat stress recovery. Therefore, SUF1 and its interactor NAA15 play important roles in basal thermotolerance in Arabidopsis.

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22