TITLE:
Response of Arabidopsis Clones to Toxic Compounds Released by Various Rhizoctonia Species
AUTHORS:
Gyula Oros, András Bittsánszky, Katalin Pilinszky
KEYWORDS:
Arabidopsis; Rhizoctonia; Toxin; Athelia; Ceratobasidium; Ceratorhiza; Thanatephorus; Waitea
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.3,
February
8,
2014
ABSTRACT: Response of 3 Arabidopsis clones to 41 strains of eight Rhizoctonia species was studied in model experiments. The seed germination was decelerated
in most of the cases, although the inhibitory effect varied within large limits.
The pre-emergence damping off and root neck rot leading to damping off were the most frequent symptoms of disease syndrome
caused by toxic metabolites. The clone transformed with cDNA clone overexpressing gstf4 gene exhibited significantly
improved tolerance as compared to parental one, meanwhile the sensitivity of Dmannose pyrophosphorylase/mannose-1-pyrophosphatase
deficient clone dramatically increased.
Strains of R. solani of AG-2, AG-4
and AG-7 and Athelia rolfsii produced
the most toxic metabolites, however, no strict relationships were revealed
between taxonomic position of Rhizoctonia strains and toxicity of their metabolites.