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Insertion of the LINE Retrotransposon MGL Causes a Conidiophore Pattern Mutation in Magnaporthe grisea

August 2000 , Volume 13 , Number  8
Pages  892 - 894

Marie Nishimura , 1 Nagao Hayashi , 2 Nam-Soo Jwa , 1 Gee W. Lau , 3 John E. Hamer , 3 and Akira Hasebe 1

1National Institute of Agrobiological Resources (NIAR), 2-1-2, Kan-non dai, Tsukuba, Ibaraki, 305-8602, Japan; 2National Agriculture Research Center (NARC), 3-1-1, Kan-non dai, Tsukuba, Ibaraki, 305-8666, Japan; 3Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, U.S.A.

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Accepted 13 April 2000.

We obtained three Magnaporthe grisea morphological mutants that had the LINE transposon MGL inserted into the ACR1 locus. Sequence analysis revealed that ACR1 is homologous to medA, a developmental regulator of Aspergillus nidulans conidiation. These results demonstrated that MGL elements could transpose and cause insertional mutagenesis in M. grisea.

© 2000 The American Phytopathological Society