interaction of ulocladium atrum, a potential biological control agent, with botrytis cinerea and grapevine plantlets
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2013
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Abstract
The effectiveness of biological control agent, Ulocladium atrum (isolates U13 and U16) in protecting Vitis vinifera L. cv. Chardonnay against gray mold disease caused by Botrytis cinerea, and simulation of the foliar defense responses was investigated. A degraded mycelium structure during cultural assay on potato dextrose agar revealed that U. atrum isolates U13 and U16 were both antagonistic to B. cinerea, mainly when isolates were inoculated two days before Botrytis. Under in vitro conditions, foliar application of U. atrum protected grapevine leaves against gray mold disease. An increase in chitinase activity was induced by the presence of U. atrum isolates indicating that the biological control agents triggered plant defense mechanisms. Moreover, U13 has the potential to colonize the grapevine plantlets and to improve their growth. The ability of U. atrum isolates to exhibit an antagonistic effect against B. cinerea in addition to their aptitude to induce plant resistance and to promote grapevine growth may explain a part of their biological activity. Hence, this study suggests that U. atrum provides a suitable biocontrol agent against gray mold in grapevines.
| Reference Key |
ronseaux2013agronomyinteraction
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|---|---|
| Authors | ;Sébastien Ronseaux;Essaid Ait Barka;Christophe Clément |
| Journal | drinking water engineering and science |
| Year | 2013 |
| DOI |
10.3390/agronomy3040632
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| URL | |
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