The in vitro inhibition of Phytophthora clandestina by some rhizobia and the possible role of Rhizobium trifolii in biological control of Phytophthora root rot of subterranean clover

Autor:	G. M. Murray, T. J. Harden, S. Simpfendorfer
Rok vydání:	1999
Předmět:	Hyphal growth Trifolium subterraneum food and beverages Biology biology.organism_classification Rhizobia Horticulture Symbiosis Botany Root rot Rhizobium Phytophthora General Agricultural and Biological Sciences Phycomycetes
Zdroj:	Australian Journal of Agricultural Research. 50:1469
ISSN:	0004-9409
DOI:	10.1071/ar99047
Popis:	The interaction between 29 isolates of Rhizobium and the in vitro growth of 3 strains of Phytophthora clandestina was investigated to determine the potential of these bacteria as biological control agents against root rot of subterranean clover (Trifolium subterraneum L.). The biological control activity of Rhizobium on the severity of root disease in seedlings was also investigated under glasshouse conditions. Thirteen of the 29 Rhizobium isolates caused significant reductions in the hyphal growth of the 3 P. clandestina isolates examined. Inoculation of seedlings with Rhizobium trifolii reduced the severity of root disease by 14–58% with corresponding increases in dry matter production of 20–73%. These results indicate that Rhizobium species have potential as biological control agents against the root rot of T. subterraneum seedlings caused by P. clandestina.
Databáze:	OpenAIRE
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