An In Planta Method for Assessing the Role of Basidiospores in Rhizoctonia Foliar Disease of Tomato

被引：31

作者：

Bartz, Faith E. ^{[4
]}

Cubeta, Marc A. ^{[4
]}

Toda, Takeshi ^{[3
]}

Naito, Shigeo ^{[2
]}

Ivors, Kelly L. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Plant Pathol, Mt Hort Crops Res & Extens Ctr, Mills River, NC 28759 USA

[2] Agr Forestry & Fisheries Tech Informat Soc, Chuo Ku, Tokyo 1030026, Japan

[3] Akita Prefectural Univ, Fac Bioresource Sci, Akita 0100195, Japan

[4] N Carolina State Univ, Dept Plant Pathol, Raleigh, NC 27695 USA

来源：

PLANT DISEASE | 2010年 / 94卷 / 05期

基金：

美国农业部;

关键词：

SOLANI AG-3; THANATEPHORUS-CUCUMERIS; HETEROKARYON FORMATION; INTRASPECIFIC GROUPS; ANASTOMOSIS GROUP; RIBOSOMAL DNA; POPULATIONS; SYSTEMATICS; TOBACCO; POTATO;

D O I：

10.1094/PDIS-94-5-0515

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A tomato (Solanum Ivcoperstcum) foliar blight disease of unknown etiology was observed in North Carolina (NC) dun on 2005 to 2006 Symptoms included necrotic lesions and blighted leaves. with signs of white mycelial growth on abaxial leaf surfaces The morphology of Isolates from symptomatic leaves was consistent with that of Rluzoctonia solani Because the pattern of symptom expression suggested that basidiospores wet e the primary inoculum source. Koch's postulates were fulfilled using a method to generate basidiospores In planta Isolates were characterized by morphology. DNA sequence analysis hyphal anastomosis. and somatic hyphal interactions Phylogenetic analyses and hyphal anastomosis criteria support placement of the isolates in R solani anastomosis group 3 (AG-3) Tomato foliar blight isolates from NC form a single phylogenetic group with tomato isolates of R solani: AG-3 from Japan and are more closely related to R solani AG-3 isolates from potato than tobacco Isolates exhibited both compatible and incompatible hyphal interactions when paired in vino To our knowledge. this is the first detailed report of tomato foliar blight caused by R. solani AG-3 in North America A comprehensive description of the technique employed for producing basidiospores is presented with potential utility for understanding foliar disease etiology in other Rluzoctonia pathosystems

引用

页码：515 / 520

页数：6

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