caa a22 4500 606161406 CHVBK 20210128100634.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10526-014-9623-6 doi (NATIONALLICENCE)springer-10.1007/s10526-014-9623-6 Toxic organic acids produced in biological soil disinfestation mainly caused the suppression of Fusarium oxysporum f. sp. cubense [Elektronische Daten] [Xinqi Huang, Teng Wen, Jinbo Zhang, Lei Meng, Tongbin Zhu, Zucong Cai] Biological soil disinfestation (BSD) is an effective and environmentally friendly way to suppress soil-borne pathogens. Although it is increasingly used in USA, the Netherlands and Japan, its precise mechanism has not been well quantified so far. Quantitative real-time PCR, denaturing gradient gel electrophoresis and high performance liquid chromatography were used for investigating the role of organic acids in the mechanisms of BSD. The results showed that BSD significantly reduced the population of Fusarium oxysporum in soil. Simultaneously, in BSD treatments, the soil pH significantly decreased and some organic acid producers, such as Clostridia sp., were observed. Four kinds of toxic organic acids to F. oxysporum were detected in soil solutions of BSD treatments. Acetic acid and butyric acid were the primary organic acids, followed by small amounts of isovaleric acid and propionic acid. The verification test directly demonstrated that the toxic organic acids with the maximal doses detected in BSD significantly suppressed F. oxysporum, Rhizoctonia solani and Ralstonia solanacearum. International Organization for Biological Control (IOBC), 2014 Soil pH nationallicence Acetic acid nationallicence Butyric acid nationallicence Soil-borne pathogen nationallicence Huang Xinqi School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut Wen Teng School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut Zhang Jinbo School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut Meng Lei College of Agriculture, Hainan University, 570228, Haikou, China aut Zhu Tongbin School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut Cai Zucong School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut BioControl Springer Netherlands 60/1(2015-02-01), 113-124 1386-6141 60:1<113 2015 60 10526 https://doi.org/10.1007/s10526-014-9623-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10526-014-9623-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Xinqi School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Wen Teng School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Zhang Jinbo School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Meng Lei College of Agriculture, Hainan University, 570228, Haikou, China aut NATIONALLICENCE 700 1- Zhu Tongbin School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Cai Zucong School of Geography Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 773 0- BioControl Springer Netherlands 60/1(2015-02-01), 113-124 1386-6141 60:1<113 2015 60 10526