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تبارزایی، تنوع ژنتیکی و ساختار جمعیت ویروس زردي بافت مرده باقلا براساس ترادف
- Source :
- Iranian Journal of Plant Pathology; Autumn2019, Vol. 55 Issue 2, p162-177, 16p
- Publication Year :
- 2019
-
Abstract
- Faba bean necrotic yellows virus (FBNYV) causes severe yield losses and crop failure in legumes in the north African, south Asian and European countries. Following nucleotide sequencing of DNA-M segment of 17 host and geographical FBNYV isolates in Iran, different molecular analysis were performed based on all available DNA-M sequences of FBNYV. Based on constructed phylogenetic tree using nucleotide sequence of DNA-M component, FBNYV isolates were grouped into three clades, including isolates from Iran and Azerbaijan as a distinct clade. Genetic distance studies of FBNYV host subpopulations revealed some evidences of host adaptation in FBNYV natural selection. High gene flow was found among Iran – Azerbaijan and Spain – Africa subpopulations, indicating the relationship of their origins. Maximum genetic diversity of DNA-M was estimated in the central subpopulation of Iran. The dN/dS (Ѡ) value less than 1 represented the negative selection pressure on the movement protein of the virus. Seven out of nine recombination events were detected in DNA-M of Iranian FBNYV isolates. This is the first report of the FBNYV infection on pea from Iran. In the current study, the complete DNA-M nucleotide sequences of French bean and pea isolates of FBNYV were determined for the first time in the world. [ABSTRACT FROM AUTHOR]
Details
- Language :
- Persian
- ISSN :
- 00062774
- Volume :
- 55
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Iranian Journal of Plant Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 141065430