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Zhang, Jing Ze & Ming Jiang Li. A new species of Bipolaris from the halophyte Sesuvium portulacastrum in Guangdong Province, China. Mycotaxon 109: 289–300. 2009.

ABSTRACT:  A new graminicolous speciesfound to infect Sesuvium portulacastrum (Aizoaceae) in China is introduced. Bipolaris sesuvii is characterized by straight, subcylindrical conidia with monopolar germination. Phylogenetic analysis based on ITS rDNA sequences show that B. sesuvii clusters with B. indica, which is distinguished by its straight, short clavate conidia. The combination of DNA sequence and morphological data indicate that B. sesuvii is a distinct species of Bipolaris. Pathogenicity tests also confirm that Sesuvium portulacastrum (sea purslane) is a natural host of B. sesuvii causing leaf lesions, leaf blight, or leaf rot and stem lesions.

KEYWORDS:  fungus, taxonomy, systematics, phylogeny

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