Colonization of barley roots by endophytic fungi and their reduction of take-all caused by Gaeumannomyces graminis var. tritici

TY - JOUR

T1 - Colonization of barley roots by endophytic fungi and their reduction of take-all caused by Gaeumannomyces graminis var. tritici

AU - Maciá-Vicente, Jose G.

AU - Jansson, Hans Börje

AU - Mendgen, Kurt

AU - Lopez-Llorca, Luis V.

PY - 2008/8

Y1 - 2008/8

N2 - Fungal root endophytes obtained from natural vegetation were tested for antifungal activity in dual culture tests against the root pathogen Gaeumannomyces graminis var. tritici. Fifteen isolates, including Acremonium blochii, Acremonium furcatum, Aspergillus fumigatus, Cylindrocarpon sp., Cylindrocarpon destructans, Dactylaria sp., Fusarium equiseti, Phoma herbarum, Phoma leveillei, and a sterile mycelium, selected based on the dual culture test, were inoculated on barley roots in growth tubes under axenic conditions, both in the absence and presence of G. graminis var. tritici. All isolates colonized the rhizosphere and very often the root cortex without causing disease symptoms and without affecting plant growth. Eight isolates significantly reduced the symptoms caused by G. graminis var. tritici, and 6 of them reduced its presence in the roots.

AB - Fungal root endophytes obtained from natural vegetation were tested for antifungal activity in dual culture tests against the root pathogen Gaeumannomyces graminis var. tritici. Fifteen isolates, including Acremonium blochii, Acremonium furcatum, Aspergillus fumigatus, Cylindrocarpon sp., Cylindrocarpon destructans, Dactylaria sp., Fusarium equiseti, Phoma herbarum, Phoma leveillei, and a sterile mycelium, selected based on the dual culture test, were inoculated on barley roots in growth tubes under axenic conditions, both in the absence and presence of G. graminis var. tritici. All isolates colonized the rhizosphere and very often the root cortex without causing disease symptoms and without affecting plant growth. Eight isolates significantly reduced the symptoms caused by G. graminis var. tritici, and 6 of them reduced its presence in the roots.

KW - Hordeum vulgare

KW - Hyphal growth inhibition

KW - Microscopy

KW - Plant disease

KW - Root-pathogenic fungi

UR - http://www.scopus.com/inward/record.url?scp=49449089137&partnerID=8YFLogxK

U2 - 10.1139/W08-047

DO - 10.1139/W08-047

M3 - Article

C2 - 18772922

AN - SCOPUS:49449089137

SN - 0008-4166

VL - 54

SP - 600

EP - 609

JO - Canadian Journal of Microbiology

JF - Canadian Journal of Microbiology

IS - 8

ER -