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- 저자 : Kuanyu Zheng (검색결과 2 건)
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Characterization of a New Isolate of Chilli ringspot virus in Yunnan, China
Md. Siddiqur Rahman,Xiaoxia Su,Kuanyu Zheng,Xiaofei Cheng,Ting Li,Lihua Zhao,Jiahong Dong,Zhongkai Zhang 한국작물학회 2020 Journal of crop science and biotechnology Vol.23 No.1
Virus diseases are the major limiting factors of chilli production in China. A virus isolate of chilli ringspot virus-Yunnan (ChiRSV-YN) from chilli (Capsicum annuum L.) showing mild mosaic, leaf crinkling, ringspot, and vein banding symptoms was recently identified in Yunnan, China. The electron microscopy confirmed the virus as a typical potyvirus having flexuous filamentous particles ca. 780 nm in length. Several chilli and tobacco varieties were tested through mechanical inoculation and found to be susceptible to the virus isolate ChiRSV-YN. The viral genome was sequenced through RNA sequencing. The complete genomic RNA of the isolate (GenBank Acc. No. KX258620) consisted of 9,652 nucleotides (nt) excluding the poly (A) tail at the 3ʹ end. The isolate contains a large ORF which encodes a polyprotein of 3,086 amino acids (aa) with Mr. of 349.21 kDa. It had a typical genomic organization of potyviruses. The complete nucleotide and polyprotein sequences of ChiRSV-YN had 87.6 and 93.2% identities with the ChiRSV-HN/14, respectively. The result showed ChiRSV-YN is a new isolate of ChiRSV and it is the first full-length genome characterization of ChiRSV in Yunnan, China. Understanding of the characteristics of this virus isolate might provide the basis for disease diagnosis and control in the future.
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Shu-Jun Wei,Jing Ni,Kuanyu Zheng,Zhenguo Yang,Daoyan Xie,Aisi Da,Jianping Chai,Xiujun Jiang,Shaoxiang Li 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.1
The carmine spider mite, Tetranychus cinnabarinus (Boisduval), is a serious phytophagous mite damaging importantcrops and can rapidly develop resistance to acaricides. Mitochondrial ATP synthase (F1F0 ATP synthase)is an important target site of acaricides. The role of ATP synthase in acaricide resistance remains unclear at themolecular level. In this study, twelve full-length cDNAs of ATP synthase genes were cloned and characterizedfrom T. cinnabarinus and their expression levels were determined for both progargite-resistant and susceptiblestrains. The effect of propargite exposure on gene expression was also evaluated. Analyses of gene expressionrevealed that TcATPsynU-2, TcATPsynF0-2 and TcATPsynF0-4 were significantly down-regulated in the progargite-resistant strain. TcATPsynF0-2 and TcATPsynF0-4 had a strong response to progargite exposure. Theresults suggest that lower levels of TcATPsynU-2, TcATPsynF0-2 and TcATPsynF0-4 expression might be related topropargite-resistance observed in the resistant T. cinnabarinus. This is the first attempt to identify specific ATPasegenes involved in propargite resistance in T. cinnabarinus.
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