| Title: | Antagonistic activities of volatiles produced by two Bacillus strains against Monilinia fructicola in peach fruit |
| Author(s): | Liu C; Yin X; Wang Q; Peng Y; Ma Y; Liu P; Shi J; |
| Address: | "Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian, China" |
| ISSN/ISBN: | 1097-0010 (Electronic) 0022-5142 (Linking) |
| Abstract: | "BACKGROUND: Brown rot caused by Monilinia fructicola is one of most serious diseases of postharvest peach fruit. The objective of this study was to select effective antagonistic bacteria against Monilinia fructicola and evaluate the effects of these strains against brown rot. RESULTS: Four bacterial strains producing inhibitory volatile gas against Monilinia fructicola were isolated from the peach rhizosphere soil. The volatiles produced by 12a (Bacillus vallismortis) and 14b (Bacillus altitudinis) showed considerable antagonistic activities. Monilinia fructicola showed 80.3% and 68.4% mycelial growth inhibition and cell damage in the presence of strains 12a and 14b, respectively. The inhibition rate of brown rot in peach fruit fumigated with the culture solution of 12a or 14b reached 77.1% and 50.0%, respectively. The volatile compounds produced by 12a and 14b were identified according to gas chromatographic-mass spectrometric analysis. Among them, 6-methyl-2-heptanone and 2-pentylfuran completely inhibited mycelial growth at 100 microL L(-1) concentration. Cedrol showed strong inhibitory activity against mycelial growth at 100 microg L(-1) and isodecyl methacrylate inhibited growth at high concentration. The inhibition rate of the 50 microL L(-1) artificial mixture of these four volatiles was 59.3% in vitro. CONCLUSION: These results indicate that the two antagonistic bacteria and some volatiles produced by them have potential value in controlling brown rot in harvested peach fruit. (c) 2018 Society of Chemical Industry" |
| Keywords: | "Ascomycota/*drug effects/growth & development/physiology Bacillus/*chemistry/metabolism Fruit/microbiology Fungicides, Industrial/chemistry/metabolism/*pharmacology Pest Control, Biological Plant Diseases/microbiology Prunus persica/*microbiology Volatile;" |
| Notes: | "MedlineLiu, Chang Yin, Xiaohui Wang, Qingguo Peng, Yong Ma, Yurong Liu, Pei Shi, Jingying eng 2014GNC113009/Science and Technology Development Plan of Shandong Provence/ 2015BAD16B03/National Sci-Tec Support Plan/ England 2018/05/15 J Sci Food Agric. 2018 Dec; 98(15):5756-5763. doi: 10.1002/jsfa.9125. Epub 2018 Jun 22" |
