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Int. J. Mol. Sci. 2012, 13(3), 3916-3932; doi:10.3390/ijms13033916
Article

Enhancement of Biocontrol Efficacy of Pichia carribbica to Postharvest Diseases of Strawberries by Addition of Trehalose to the Growth Medium

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Received: 13 February 2012 / Revised: 2 March 2012 / Accepted: 19 March 2012 / Published: 22 March 2012
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Abstract

The effects of trehalose on the antagonistic activity of Pichia caribbica against Rhizopus decay and gray mold decay of strawberries and the possible mechanisms involved were investigated. The proteomic analysis and comparison of P. carribbica in response to trehalose was analyzed based on two-dimensional gel electrophoresis. The antagonistic activity of P. carribbica harvested from the culture media of NYDB amended with trehalose at 0.5% was improved greatly compared with that without trehalose. The PPO (Polyphenoloxidase) and POD (Peroxidase) activity of strawberries treated with P. carribbica cultured in the NYDB media amended with trehalose at 0.5% was higher than that of the strawberries treated with P. carribbica harvested from NYDB. The β-1, 3-glucanase activity of strawberries treated with P. carribbica cultured in the NYDB media amended with trehalose at 0.5% was also higher than that of the strawberries treated with P. carribbica harvested from NYDB and the control. Several differentially expressed proteins of P. carribbica in response to trehalose were identified in the cellular proteome, most of them were related to basic metabolism.
Keywords: Trehalose; Pichia caribbica; postharvest diseases; antagonistic activity; strawberries; differentially expressed proteins Trehalose; Pichia caribbica; postharvest diseases; antagonistic activity; strawberries; differentially expressed proteins
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zhao, L.; Zhang, H.; Li, J.; Cui, J.; Zhang, X.; Ren, X. Enhancement of Biocontrol Efficacy of Pichia carribbica to Postharvest Diseases of Strawberries by Addition of Trehalose to the Growth Medium. Int. J. Mol. Sci. 2012, 13, 3916-3932.

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