دورية أكاديمية

Leucine 127 of Cucurbit Chlorotic Yellows Virus P22 Is Crucial for Its RNA Silencing Suppression Activity and Pathogenicity.

التفاصيل البيبلوغرافية
العنوان: Leucine 127 of Cucurbit Chlorotic Yellows Virus P22 Is Crucial for Its RNA Silencing Suppression Activity and Pathogenicity.
المؤلفون: Kang YC; Department of Medical Laboratory Science and Biotechnology, Asia University, Wufeng, Taichung 41354, Taiwan.; Department of Plant Pathology, National Chung Hsing University, Taichung 40227, Taiwan., Yeh SD; Department of Plant Pathology, National Chung Hsing University, Taichung 40227, Taiwan.; Advanced Plant Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan., Chen TC; Department of Medical Laboratory Science and Biotechnology, Asia University, Wufeng, Taichung 41354, Taiwan.
المصدر: Phytopathology [Phytopathology] 2024 Apr; Vol. 114 (4), pp. 813-822. Date of Electronic Publication: 2024 Apr 10.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: American Phytopathological Society] Country of Publication: United States NLM ID: 9427222 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0031-949X (Print) Linking ISSN: 0031949X NLM ISO Abbreviation: Phytopathology Subsets: MEDLINE
أسماء مطبوعة: Original Publication: [St. Paul, Minn., etc., American Phytopathological Society]
مواضيع طبية MeSH: Plant Diseases*/virology , Crinivirus*/genetics , Crinivirus*/pathogenicity , Chenopodium quinoa*/virology , Plant Leaves*/virology , Viral Proteins*/genetics , Viral Proteins*/metabolism , RNA Interference* , Leucine*/metabolism , Potyvirus*, Virulence ; Cucurbita/virology
مستخلص: Plant viruses produce particular suppressors to antagonize the host defense response of RNA silencing to establish infection. Cucurbit chlorotic yellows virus (CCYV), a member of the genus Crinivirus of the family Closteroviridae , severely damages the production of economically essential cucurbits worldwide. Here, we used the attenuated zucchini yellow mosaic virus (ZYMV) vector ZAC to express individual coding sequences, including CP, CPm, P25, and P22, of a Taiwan CCYV isolate (CCYV-TW) to identify their possible roles as pathogenicity determinants. ZAC is an HC-Pro function mutant that lacks the ability of local lesion induction on Chenopodium quinoa leaves and induces mild mottling followed by recovery on its natural host zucchini squash plants. Only the recombinant expressing CCYV-TW P22 complemented the effect of ZAC HC-Pro dysfunction, causing more severe symptoms on zucchini squash plants and restoring lesion formation on C. quinoa leaves, with lesions forming faster than those generated by the wild-type ZYMV. This suggests that CCYV-TW P22 is a virulence enhancer. Sequence analysis of criniviral P22s revealed the presence of four conserved leucine residues (L 10 , L 17 , L 84 , and L 127 ) and one conserved lysine residue (K 185 ). The five P22 residues conserved among the CCYV isolates and the P22 orthologs of two other criniviruses were each substituted with alanine in CCYV-TW P22 to investigate its ability to suppress RNA silencing and pathogenicity. The results provide new insights into CCYV-P22, showing that the L 127 residue of P22 is indispensable for maintaining its stability in RNA silencing suppression and essential for virulence enhancement.
Competing Interests: The author(s) declare no conflict of interest.
فهرسة مساهمة: Keywords: RNA silencing suppressor; crinivirus; cucurbit chlorotic yellows virus (CCYV); pathogenicity
المشرفين على المادة: 0 (Viral Proteins)
GMW67QNF9C (Leucine)
SCR Organism: Zucchini yellow mosaic virus
تواريخ الأحداث: Date Created: 20231101 Date Completed: 20240430 Latest Revision: 20240430
رمز التحديث: 20240430
DOI: 10.1094/PHYTO-07-23-0227-R
PMID: 37913633
قاعدة البيانات: MEDLINE
الوصف
تدمد:0031-949X
DOI:10.1094/PHYTO-07-23-0227-R