Open AccessCharacterisation of Pythium paroecandrum and its antagonism towards Botrytis cinerea , the causative agent of grey mould disease of grape
Author(s) -
Abdelghani El Yassimi,
Bala Kanak,
Paul Bernard
Publication year - 2004
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1016/s0378-1097(03)00895-4
Subject(s) - oomycete , botrytis cinerea , antagonism , biology , pythium , ribosomal dna , botrytis , botany , hypha , sclerotium , internal transcribed spacer , pathogen , microbiology and biotechnology , ribosomal rna , genetics , phylogenetics , gene , receptor
Pythium paroecandrum (B‐30), an oomycete, was isolated from soil samples taken from a wheat field in Genlis in the Burgundy region of France and was found to check the growth and development of Botrytis cinerea , a serious grapevine pathogen. The oomycete is a fast‐growing organism, living on vegetable debris, and can be recognised by its catenulate hyphal swellings, catenulate oogonia, and monoclinous antheridia. When grown together with B. cinerea , the causal agent of the grey mould disease of the grapevine, P. paroecandrum shows a pronounced antagonism and suppresses its growth and its aptitude to provoke the grey mould symptoms. Morphological features of this oomycete, its antagonism to B. cinerea , the sequences of the internal transcribed spacer region of its nuclear ribosomal DNA, and its comparison with related species are discussed in this article.