Biological control of rice sheath blight using hyphae-associated bacteria: development of an in planta screening assay to predict biological control agent performance under field conditions
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Biological control of rice sheath blight using hyphae-associated bacteria: development of an in planta screening assay to predict biological control agent performance under field conditions. / Nicolaisen, Mette Haubjerg; Nguyen Duc Cuong; Herschend, Jakob; Jensen, Birgit; Le Cam Loan; Pham Van Du, ; Sorensen, Jan; Sorensen, Helle; Olsson, Stefan.
In: BioControl, Vol. 63, No. 6, 2018, p. 843-853.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Biological control of rice sheath blight using hyphae-associated bacteria: development of an in planta screening assay to predict biological control agent performance under field conditions
AU - Nicolaisen, Mette Haubjerg
AU - Nguyen Duc Cuong, null
AU - Herschend, Jakob
AU - Jensen, Birgit
AU - Le Cam Loan, null
AU - Pham Van Du, null
AU - Sorensen, Jan
AU - Sorensen, Helle
AU - Olsson, Stefan
PY - 2018
Y1 - 2018
N2 - A pathogenicity assay for in planta screening of biological control agents (BCAs) towards sheath blight in rice was developed, and used to evaluate a panel of Rhizoctonia solani Kuhn hyphae-associated bacteria for their ability to control sheath blight under screenhouse conditions. The best performing BCA, Burkholderia sp. strain A-7.3, was selected for field trials. Disease incidence and disease severity were significantly reduced leading to a significant grain yield increase of 7%. Furthermore, R. solani sclerotia formation and sclerotia viability were significantly reduced, thus lowering the reservoir for primary infections in the next crop cycle. The paper presents a reliable pathogenicity assay that can be used to test BCA performance under different scenarios e.g. plant variety and soil conditions, and help predict translation of results obtained under screenhouse conditions to field performance. Furthermore, it supports the hypothesis that hyphae-associated bacteria are a promising source of niche-specific BCAs towards fungal pathogens.
AB - A pathogenicity assay for in planta screening of biological control agents (BCAs) towards sheath blight in rice was developed, and used to evaluate a panel of Rhizoctonia solani Kuhn hyphae-associated bacteria for their ability to control sheath blight under screenhouse conditions. The best performing BCA, Burkholderia sp. strain A-7.3, was selected for field trials. Disease incidence and disease severity were significantly reduced leading to a significant grain yield increase of 7%. Furthermore, R. solani sclerotia formation and sclerotia viability were significantly reduced, thus lowering the reservoir for primary infections in the next crop cycle. The paper presents a reliable pathogenicity assay that can be used to test BCA performance under different scenarios e.g. plant variety and soil conditions, and help predict translation of results obtained under screenhouse conditions to field performance. Furthermore, it supports the hypothesis that hyphae-associated bacteria are a promising source of niche-specific BCAs towards fungal pathogens.
KW - Rhizoctonia solani AG1-IA
KW - Oryza sativa
KW - Biological control
KW - Burkholderia
KW - Sheath blight
U2 - 10.1007/s10526-018-09908-y
DO - 10.1007/s10526-018-09908-y
M3 - Journal article
VL - 63
SP - 843
EP - 853
JO - BioControl
JF - BioControl
SN - 1386-6141
IS - 6
ER -
ID: 209574446