TY - JOUR
T1 - Mycorrhizal fungi increase biocontrol potential of Pseudomonas fluorescens
AU - Siasou, Eleni
AU - Standing, Dominic
AU - Killham, Ken
AU - Johnson, David
PY - 2009/6
Y1 - 2009/6
N2 - Wheat roots are susceptible to colonisation by soil-borne pathogens, such as Gaeumannomyces graminis var. tritici (Ggt), which causes the globally important disease take-all, and mutualistic arbuscular mycorrhizal fungi (AMF). Certain rhizosphere fluorescent Pseudomonas strains have received much attention as potential biocontrol agents given their ability to produce antibiotics, such as 2,4-diacetyl-phloroglucinol (DAPG), that confer a measure of plant protection. Here we show that Pseudomonas fluorescens only produced DAPG in the presence of soluble carbon from soil containing either Ggt or AMF, and production increased by two orders of magnitude in response to both AMF and Ggt. Encouragement of mycorrhizat colonisation may therefore offer a sustainable strategy for protection against take-all.
AB - Wheat roots are susceptible to colonisation by soil-borne pathogens, such as Gaeumannomyces graminis var. tritici (Ggt), which causes the globally important disease take-all, and mutualistic arbuscular mycorrhizal fungi (AMF). Certain rhizosphere fluorescent Pseudomonas strains have received much attention as potential biocontrol agents given their ability to produce antibiotics, such as 2,4-diacetyl-phloroglucinol (DAPG), that confer a measure of plant protection. Here we show that Pseudomonas fluorescens only produced DAPG in the presence of soluble carbon from soil containing either Ggt or AMF, and production increased by two orders of magnitude in response to both AMF and Ggt. Encouragement of mycorrhizat colonisation may therefore offer a sustainable strategy for protection against take-all.
U2 - 10.1016/j.soilbio.2009.02.028
DO - 10.1016/j.soilbio.2009.02.028
M3 - Article
SN - 0038-0717
VL - 41
SP - 1341
EP - 1343
JO - Soil Biology and Biochemistry
JF - Soil Biology and Biochemistry
IS - 6
ER -