Recombination in Magnaporthe grisea.

Abstract:

:The heterothallic ascomycete, Magnaporthe grisea, is the blast pathogen of rice and about 50 other grasses, and has potential for sexual and asexual reproduction. In most populations, data from mating type, fertility assays, and genotypic diversity strongly suggest that the pathogen is asexual. However, parasexual recombination cannot be ruled out. Chromosome length polymorphisms and translocations may prevent successful meiosis in most populations. Pathogens of millets and some grasses growing with rice appear to be largely genetically isolated, though some gene flow may occur. Sexual fertility has repeatedly been reported in rice pathogens from mountainous regions of South and East Asia. Several means by which sexual fertility may be lost in an agricultural setting are advanced.

journal_name

Annu Rev Phytopathol

authors

Zeigler RS

doi

10.1146/annurev.phyto.36.1.249

subject

Has Abstract

pub_date

1998-01-01 00:00:00

pages

249-75

eissn

0066-4286

issn

1545-2107

journal_volume

36

pub_type

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