Phytic Acid Enhances Biocontrol Activity of Rhodotorula mucilaginosa against Penicillium expansum Contamination and Patulin Production in Apples.
Phytic Acid Enhances Biocontrol Activity of Rhodotorula mucilaginosa against Penicillium expansum Contamination and Patulin Production in Apples.
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DOI：
10.3389/fmicb.2015.01296
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发表时间：
2015
影响因子：
5.2
通讯作者：
Qian J
中科院分区：
文献类型：
--
作者：
Yang Q;Zhang H;Zhang X;Zheng X;Qian J
研究了粘红酵母与植酸联合应用对苹果蓝霉病和棒曲霉素污染的防治效果。研究结果表明，不同浓度的PA对降低苹果的发病率都是有效的，4 μmol/mL的PA在20°C贮藏期间可使苹果的蓝霉病发病率从86.1%降低到62.5%，并且与未处理的对照水果相比，显示出更高的防治效果。然而，R. mucilaginosa与PA（4 μmol/mL）联用对青枯病的防治效果优于R.用粘虫作单一处理，发病率降低到62.5%，病斑直径减小到16.59cm。在离体条件下，PA的加入增强了红曲霉的生防效果。mucilaginosa对扩展青霉生长的抑制作用和棒曲霉素水平的降低。粘液或PA单独使用。R.结果表明，在本试验条件下，mucilaginosa与PA共同作用，可提高对苹果伤后展青霉素的抑制作用，使展青霉素含量比对照降低89.6%。两条河mucilaginosa和R. mucilaginosa与PA联合体外降解展青霉素。总之，R. mucilaginosa和PA可以为减少苹果采后腐烂提供有效的生物防治方法。
The effect of Rhodotorula mucilaginosa in combination with phytic acid (PA) on blue mold decay and patulin contamination of apples was investigated. Results from this study show that different concentrations of PA were effective in reducing the disease incidence of apples and that PA at concentration of 4 μmol/mL, decreased the incidence of blue mold decay in apples from 86.1 to 62.5%, and showed higher control efficacy compared to untreated, control fruit during storage at 20°C. However, R. mucilaginosa combined with PA (4 μmol/mL) showed better control efficacy of blue mold decay than R. mucilaginosa used as single treatment, the disease incidence was reduced to 62.5% and lesion diameter on apples was reduced to 16.59 cm. In in vitro experiments, the addition of PA enhanced the biocontrol effect of R. mucilaginosa against the growth of Penicillium expansum and reduced patulin level when compared with either R. mucilaginosa or PA used separately. R. mucilaginosa together with PA, improved the inhibition of patulin production in wounded apples, decreasing the content of patulin by 89.6% compared to the control, under experimental conditions. Both R. mucilaginosa and R. mucilaginosa in combination with PA degraded patulin in vitro. In conclusion, the appropriate combination of R. mucilaginosa and PA may provide an effective biocontrol method for reducing postharvest decay of apples.