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J Agric Food Chem

Title:		Volatile Organic Compounds Produced by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 as Biological Fumigants To Control Ceratocystis fimbriata in Postharvest Sweet Potatoes
Author(s):		Zhang Y; Li T; Liu Y; Li X; Zhang C; Feng Z; Peng X; Li Z; Qin S; Xing K;
Address:		"College of Life Sciences , Northeast Forestry University , Harbin 150040 , Heilongjiang , P.R. China"
Journal Title:		J Agric Food Chem
Year:		2019
Volume:		20190322
Issue:		13
Page Number:		3702 - 3710
DOI:		10.1021/acs.jafc.9b00289
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The biocontrol activity and chemical composition of the volatile organic compounds (VOCs) produced by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 were investigated. The VOCs inhibited mycelial growth and spore germination in Ceratocystis fimbriata, which causes black rot disease in sweet potato tuber roots (TRs) and showed wide-spectrum antifungal activity against several plant pathogenic fungi. A microscopic examination of C. fimbriata cells suggested morphological changes and a loss of cellular contents. Different inoculation strategies significantly affected the antifungal activity of the VOCs. In the volatile profile of SPS-41, the most abundant compound, 3-methyl-1-butanol, followed by phenylethyl alcohol and 2-methyl-1-butanol showed strong inhibition toward C. fimbriata. The weight loss rate and disease severity of the TRs were significantly reduced in response to the VOCs emitted by SPS-41. The results suggest that the VOCs produced by P. chlororaphis subsp. aureofaciens SPS-41 might constitute an attractive biological fumigant for controlling black rot disease in sweet potato TRs"
Keywords:		Antifungal Agents/chemistry/metabolism/*pharmacology Ascomycota/*drug effects/growth & development Fumigation Ipomoea batatas/*microbiology Plant Diseases/microbiology Pseudomonas chlororaphis/*chemistry/metabolism Volatile Organic Compounds/chemistry/met;
Notes:		"MedlineZhang, Yu Li, Tengjie Liu, Yuanfang Li, Xiaoyan Zhang, Chunmei Feng, Zhaozhong Peng, Xue Li, Zongyun Qin, Sheng Xing, Ke eng 2019/03/13 J Agric Food Chem. 2019 Apr 3; 67(13):3702-3710. doi: 10.1021/acs.jafc.9b00289. Epub 2019 Mar 22"