Morphological, pathological and molecular characterization of Phytophthora colocasiae responsible for taro leaf blight disease in India

被引：11
|
作者：
Nath, Vishnu Sukumari [1 ]
Hegde, Vinayaka Mahabaleswar [1 ]
Jeeva, Muthulekshmi Lajapathy [1 ]
Misra, Raj Shekar [2 ]
Veena, Syamala Swayamvaran [1 ]
Raj, Mithun [1 ]
Sankar, Darveekaran Sree [1 ]
机构：
[1] Cent Tuber Crops Res Inst, Div Crop Protect, Thiruvananthapuram 695017, Kerala, India
[2] Reg Ctr CTCRI, Bhubaneswar 751019, Orissa, India
来源：
PHYTOPARASITICA | 2015年 / 43卷 / 01期
关键词：
ITS sequencing; Morphology; Pathogenicity; POPULATION-GENETICS; MATING-TYPE; CAPSICI; METALAXYL; FUNGICIDES; RESISTANCE; DIVERSITY; ISOZYME; POTATO;
D O I：
10.1007/s12600-014-0422-5
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The oomycetous fungus Phytophthora colocasiae that causes taro leaf blight is one of the most devastating diseases of taro and is widely distributed in India. A combination of morphological (colony morphology, mating type, pathogenicity, metalaxyl sensitivity) and molecular techniques (rDNA ITS sequencing and Start codon targeted polymorphism, ScoT analysis) was used to characterize 50 isolates of P. colocasiae obtained from different locations in India. Considerable differences in morphological parameters were observed. ScoT analysis revealed high polymorphism among the isolates. This study confirms that isolates of P. colocasiae are highly dynamic in nature and a considerable degree of diversity exists among them. A detailed knowledge of the morphological and molecular characters of P. colocasiae will help in developing suitable control strategies against the taro leaf blight disease.
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页码：21 / 35
页数：15
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