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Journal of Yunnan Agricultural University 2017, Vol. 32 Issue (4) :600-605    DOI: 10.16211/j.issn.1004-390X(n).2017.04.006
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Study on Biological Characteristics of Aspergillus tubingensis Causing Leaf Spot Disease of Jatropha curcas
GAO Yuan1,2,3, ZHOU Chunxiang2,4, YANG Lifen2, YANG Jian2, YANG Jing1,3, LIU Lin1,3, CHEN Jiyue5, LI Chengyun1,3, GUO Jianwei2,3
1. Key Laboratory for Agri-biodiversity and Pest Management of Education Ministry of China, Key Laboratory of Plant Pathology, Yunnan Agricultural University, Kunming 650201, China;
2. Key Laboratory of Higher Quality and Efficient Cultivation and Security Control of Crops for Yunnan Province, Honghe University, Mengzi 661100, China;
3. State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming 650091, China;
4. Mengman Middle School, Xishuangbanna 666206, China;
5. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China

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Abstract 

[Purpose] The objective of this study was to provide theoretical foundation on prevention and control of Aspergillus tubuingensis Moss. causing leaf spot disease on Jatropha curcas L.[Method] The effect of carbon sources, nitrogen sources, temperature, pH value, light on the mycelia growth and conidial production was studied with crossing method.[Results] A. tubuingensis could grow on 17 kinds of solid media except for urea and glycine and the most suitable carbon and nitrogen source for mycelia growth were mannitol and beef extract, respectively. The fungus grew well between 23-37℃, the most suitable temperature was 35℃, the lethal temperature was 65℃; the fungus could grow between 4-8 of pH value, the most suitable pH value was 8, and light promoted the growth of mycelia. The fungus could produce conidia on 18 kinds of solid media except for urea, the most suitable carbon and nitrogen source for reproduction spore were starch and beef extract respectively; it could produce conidia between 23-37℃, the most suitable temperature was 35℃; it also could produce conidia at the regime of 4-8 of pH value, the most suitable pH value was 6, light promoted the reproduction of spore.[Conclusions] The results demonstrated that A. tubuingensis had a strong ability to adapt the environment, but it was sensitive to pH, which is related to environment of J. curcas and biological and biochemical characteristics of Jatropha leaves.

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GAO Yuan
ZHOU Chunxiang
YANG Lifen
YANG Jian
YANG Jing
LIU Lin
CHEN Jiyue
LI Chengyun
GUO Jianwei
KeywordsAspergillus tubingensis   biological characteristics   leaf spot disease of Jatropha curcas     
Received 2017-01-24;
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GAO Yuan, ZHOU Chunxiang, YANG Lifen, YANG Jian, YANG Jing, LIU Lin, CHEN Jiyue, LI Chengyun, GUO Jianwei.Study on Biological Characteristics of Aspergillus tubingensis Causing Leaf Spot Disease of Jatropha curcas[J]  Journal of Yunnan Agricultural University, 2017,V32(4): 600-605
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