Genetic diversity of Fusarium mangiferae isolated from mango malformation disease China
文献类型: 外文期刊
第一作者: Liu, Feng
作者: Liu, Feng;Wei, Ji-guang;Liu, Feng;Zhan, Ru-lin;Ou, Xiong-chang;Chang, Jin-mei
作者机构:
关键词: Mango malformation;Fusarium mangiferae;Genetic diversity;Vegetative compatibility group;Inter simple sequence repeat
期刊名称:SCIENTIA HORTICULTURAE ( 影响因子:3.463; 五年影响因子:3.672 )
ISSN: 0304-4238
年卷期: 2014 年 165 卷
页码:
收录情况: SCI
摘要: Mango malformation disease, caused by Fusarium mangiferae, is one of the most important diseases affecting mango production. Thirty-eight isolates from MM-affected mango tissues were collected from two cities and assessed for genetic diversity using vegetative compatibility groups (VCGs) and inter simple sequence repeats (ISSRs). VCGs were determined among all isolates, using nitrate non-using (nit) mutants. Out of the 455 nit mutants generated, 78.02% used both nitrite and hypoxanthine (nit1), 13.63% used hypoxanthine but not nitrite (nit3) and 7.91% used nitrite but not hypoxanthine (NitM). Five different VCGs were identified by pairing the mutants on nitrate medium. Seventy-two bands were amplified by 14 ISSR primers, with an average of 5.14 bands per primer. The size of the amplified products ranged from 300 to 2000 bp. At a genetic similarity of 0.76, the unweighted pair-group method with arithmetic mean analysis separated the isolates into five distinct clusters, comprising 33, 2, 1, 1 and 1 isolates. The VCG and ISSR data support the conclusion that the isolates of F. mangiferae are not necessarily related by geographic origin, type of host tissue, or the mango cultivar from which they were isolated. (C) 2013 Elsevier B.V. All rights reserved.
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