A real-time PCR assay for the detection of azoxystrobin-resistant Alternaria populations from pistachio orchards in California

被引:24
作者
Ma, ZH [1 ]
Michailides, TJ [1 ]
机构
[1] Univ Calif Davis, Dept Plant Pathol, Kearney Agr Ctr, Parlier, CA 93648 USA
关键词
Alternaria late blight of pistachio; QoI fungicides; real-time PCR;
D O I
10.1016/j.cropro.2004.05.012
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Azoxystrobin-resistant populations of Alternaria spp. in the alternata, tenuissima, and arborescens species-groups, the causal agents of Alternaria late blight of pistachio, have been selected in pistachio orchards in California. The azoxystrobin resistance in Alternaria spp. was found to be correlative to a single point mutation resulting in the replacement of a glycine by an alanine at codon 143 (G143A) in the mitochondrial cytochrome b (cyt b) gene. Based on this point mutation, a real-time PCR method was developed to rapidly detect azoxystrobin-resistant Alternaria populations in field leaf samples collected from pistachio orchards in California. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1259 / 1263
页数:5
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