Integrated control of citrus green and blue mold and sour rot by Bacillus amyloliquefaciens in combination with tea saponin |
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| Authors: | Weining Hao Hui Li Meiying Hu Liu Yang Muhammad Rizwan-ul-Haq |
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| Institution: | 1. College of Plant Protection, Shanxi Agricultural University, Taigu, Shanxi 030801, China;2. Taiyuan Customs District Technology Center, Taiyuan, Shanxi 030021, China;3. Experiment Teaching Center, Shanxi Agricultural University, Taigu, Shanxi 030801, China;1. Post-harvest Laboratory, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong Province 271018, China;2. Food Engineering Department, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong Province 271018, China;3. Shandong Key Laboratory of Agricultural Microbiology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, China;4. Shandong YingYangYuan Food Technology Co. Ltd., Jinan, Shandong Province 251400, China;1. Department of Agriculture, Food and Environment, University of Catania, via S. Sofia 100, 95123, Catania, Italy;2. Department of Life Sciences, University of Modena and Reggio Emilia, via Amendola 2, 42122, Reggio Emilia, Italy;1. School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230601, China;2. Agricultural Information Institute, Chinese Academy of Agricultural Sciences, 13 Beijing 100081, China;3. College of Agromony, Northwest A&F University, Yangling, Shaanxi Province 712100, China;4. Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China;1. Division of Biotechnology, Chonbuk National University, 194-5 Ma-Dong, Iksan, Jeonbuk 570-752, Republic of Korea;2. Advanced Institute of Environment and Bioscience, and Plant Medical Research Center, Chonbuk National University, Republic of Korea |
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| Abstract: | A strain of Bacillus amyloliquefaciens HF-01, isolated from citrus fruit surfaces, was screened for in vitro antagonism toward Penicillium digitatum and identified, based on Biolog identification and phylogenetic analysis of 16S rDNA sequences. The isolate was further evaluated alone, or in combination with tea saponin (TS) on artificially inoculated ‘Wuzishatangju’ mandarin fruit. The results showed that the isolate performed significantly better than the water control in reducing the incidence of green and blue mold and sour rot, but was not as effective as the fungicide treatment. Biocontrol activity of B. amyloliquefaciens HF-01 was significantly improved by addition of TS, which might influence the formation of a bacterial biofilm and stimulate the antagonist population in wounds. The treatment comprising HF-01 combined with 50 μg mL?1 TS was as effective as the fungicide treatment, which gave more than 90% control of green and blue mold and sour rot. B. amyloliquefaciens HF-01 alone or in combination with a low dosage of TS significantly reduced postharvest decay without impairing any of the other fruit quality parameters. The combination of B. amyloliquefaciens HF-01 and TS could be an alternative to synthetic fungicides for the control of citrus postharvest diseases. |
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