Vegetative compatibility groups in Cercospora Kuchii, the causal agent of cercospora leaf blight and purple seed stain in soybean

被引：20

作者：

Cai, G ^{[1
]}

Schneider, RW ^{[1
]}

机构：

[1] Louisiana State Univ, Ctr Agr, Dept Plant Pathol & Crop Physiol, Baton Rouge, LA 70803 USA

来源：

PHYTOPATHOLOGY | 2005年 / 95卷 / 03期

关键词：

D O I：

10.1094/PHYTO-95-0257

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Nitrogen nonutilizing (Nit) mutants were used to assess vegetative compatibility of 58 isolates of Cercospora kikuchii, 55 of which were isolated from soybean plants in Louisiana. Two isolates were vegetatively self-incompatible. Of 56 self-compatible isolates, 16 were assigned to six multimember vegetative compatibility groups (VCGs), 01 to 06, with 2 or 3 isolates in each VCG. The other 40 isolates each belonged to a distinct VCG. All six multimember VCGs contained isolates from different soybean cultivars, and three included isolates from different locations. Only one of six multimember VCGs included isolates both from soybean leaves and seed, while the other five included isolates from only leaves or seed. The likelihood of tissue specificity or preference was discussed. All isolates and tested Nit mutants produced cercosporin Oil potato dextrose agar under light. Significantly different amounts of cercosporin were produced among wild-type isolates, and two Nit mutants produced significantly more cercosporin than their wild-type counterparts. All isolates produced typical Cercospora leaf blight symptoms on soybean plants in greenhouse pathogenicity tests.

引用

页码：257 / 261

页数：5

共 48 条

[1]

Appel D.J., Gordon T.R., Local and regional variation in populations of Fusarium oxysporum from agricultural field soils, Phytopathology, 84, pp. 786-791, (1994)

[2]

Brooker N.L., Leslie J.F., Dickman M.B., Nitrate non-utilizing mutants of Colletotrichum and their use in studies of vegetative compatibility and genetic relatedness, Phytopathology, 81, pp. 672-677, (1991)

[3]

Cai G., Gale L.R., Schneider R.W., Kistler H.C., Davis R.M., Elias K.S., Miyao E.M., Origin of race 3 of Fusarium oxysporum f. sp. lycopersici at a single site in California, Phytopathology, 93, pp. 1014-1022, (2003)

[4]

Cai G., Schneider R.W., Use of nitrate nonutilizing mutants to examine vegetative compatibility groups in Cercospora kikuchii, Phytopathology, 92, SUPPL., (2002)

[5]

Chupp C., A Monograph of the Fungus Genus Cercospora, (1954)

[6]

Corlett M., An annotated list of the published names in Mycosphaerella and Sphaerella, Mycol. Mem., 18, pp. 1-328, (1991)

[7]

Correll J.C., Gordon T.R., McCain A.H., Vegetative compatibility and pathogenicity of Verticillium albo-atrum, Phytopathology, 78, pp. 1017-1021, (1988)

[8]

Correll J.C., Klittich C.J.R., Leslie J.F., Nitrate nonutilizing mutants of Fusarium oxysporum and their use in vegetative compatibility tests, Phytopathology, 77, pp. 1640-1646, (1987)

[9]

Daub M.E., Ehrenshaft M., The photoactivated toxin cercosporin: Toxicity, resistance, regulation and role in disease, Toxins in Plant Disease Development and Evolving Biotechnology, pp. 37-66, (1997)

[10]

Daub M.E., Ehrenshaft M., The photoactivated Cercospora toxin cercosporin: Contributions to plant disease and fundamental biology, Annu. Rev. Phytopathol., 38, pp. 461-490, (2000)

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