›› 2018, Vol. 30 ›› Issue (12): 2056-2064.DOI: 10.3969/j.issn.1004-1524.2018.12.10

• Plant Protection • Previous Articles     Next Articles

Function of DnaJ-like proteins in infection of Turnip mosaic virus onto Nicotiana benthamiana

SUN Chaochen1,2, YAN Fei2, CHEN Jianping2,*   

  1. 1. College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China;
    2. State Key Laboratory Breeding Base of Zhejiang Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs, Key Laboratory of Biotechnology in Plant Protection of Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2018-04-23 Online:2018-12-25 Published:2018-12-28

Abstract: Heat shock protein 40 (HSP40) contains a conserved J domain, also named DnaJ protein. Its homologous protein is called DnaJ-like protein. Current research shows that HSP40 family responds to the infection of multiple viruses, but the ways in their respective functions are different. Turnip mosaic virus (TuMV) is an important vegetable virus that causes serious economic losses to vegetable production. At present, it is unclear whether the DnaJ-like protein responds to the infection of TuMV and whether DnaJ-like protein play a role in TuMV infection. In this study, 16 genes belonging to DnaJ protein class A subfamily and B subfamily were cloned from Nicotiana benthamiana. The qRT-PCR analysis showed that DnaJ-like protein family genes were up-regulated in TuMV-infected N. benthamiana. Silencing the genes NbJ1 and NbJ5, the typical gene of subfamily A and B, respectively, caused the reduced TuMV accumulation. The results showed that DnaJ-like protein might play a role in TuMV infecting, which provided a new way to understand the pathogenic mechanism of TuMV.

Key words: HSP40, turnip mosaic virus, homology analysis

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