烟草酚酸和有机酸对黑胫病菌生长的影响

【目的】探讨烟草根系分泌物中酚酸和有机酸对烟草黑胫病菌生长的影响,为明确根系分泌物组分与黑胫病菌互作机制提供理论依据。【方法】采用外源添加方法,比较了不同酚酸和有机酸对黑胫病菌菌丝生长、孢子囊产生量及游动孢子的影响。【结果】不同酚酸物质在低浓度时促进了黑胫病菌菌丝生长和孢子囊产生量,但随着浓度增加促进作用减小甚至转变为抑制作用;除高浓度香草酸和香豆酸直接抑制游动孢子释放,其他酚酸各浓度均表现为促进作用。除添加0.05 g/L苹果酸表现为促进作用外,其他有机酸对黑胫病菌菌丝生长具表现为抑制作用;苹果酸、乳酸和富马酸对孢子囊产生和游动孢子释放表现为低浓度促进高浓度抑制,而草酸、酒石酸和丁二酸在各浓...

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Published in西南农业学报 Vol. 30; no. 6; pp. 1364 - 1368
Main Author 白羽祥 朱媛 杨焕文 王戈 徐照丽 李正风
Format Journal Article
LanguageChinese
Published 云南农业大学烟草学院,云南昆明,650201%云南省农业科学院农业经济与信息研究所,云南昆明,650205%云南省烟草农业科学研究院,云南昆明,650201%云南中烟工业有限责任公司,云南昆明,650201 2017
Subjects
有机酸
烟草
菌落生长
酚酸
黑胫病
Tobacco
烟草
Phenolic acid
Organic acid
有机酸
菌落生长
Phytophora parasitica var.nicotiana
酚酸
Colony growth
黑胫病
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ISSN1001-4829
DOI10.16213/j.cnki.scjas.2017.6.022

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Summary:【目的】探讨烟草根系分泌物中酚酸和有机酸对烟草黑胫病菌生长的影响,为明确根系分泌物组分与黑胫病菌互作机制提供理论依据。【方法】采用外源添加方法,比较了不同酚酸和有机酸对黑胫病菌菌丝生长、孢子囊产生量及游动孢子的影响。【结果】不同酚酸物质在低浓度时促进了黑胫病菌菌丝生长和孢子囊产生量,但随着浓度增加促进作用减小甚至转变为抑制作用;除高浓度香草酸和香豆酸直接抑制游动孢子释放,其他酚酸各浓度均表现为促进作用。除添加0.05 g/L苹果酸表现为促进作用外,其他有机酸对黑胫病菌菌丝生长具表现为抑制作用;苹果酸、乳酸和富马酸对孢子囊产生和游动孢子释放表现为低浓度促进高浓度抑制,而草酸、酒石酸和丁二酸在各浓度下均表现为抑制作用;另外,乙酸基本完全抑制孢子囊产生和游动孢子释放。【结论】不同酚酸和有机酸对黑胫病生长的影响存在差异,其促进或抑制作用取决于酚酸和有机酸种类及浓度。
Bibliography:51-1213/S
[ Objective ] The aims of study were to discuss the effect of phenolic and organic acids secreted from tobacco root on the growth ofphytophora parasitica var. nicotiana, and to provide a theoretical basis for clarifying the interaction between components of root exudates andthe pathogen. [ Method ] the effect of different phenolic and organic acids on mycelial growth, sporangium yield and zoospore release ratewere compared by artificially adding method. [ Result] Different phenolic acid stimulated the mycelial growth and sporangium yield at lowconcentration, while the effect decreased and even translated into inhihition effect with concentration increasing. Except for vanillic and cum-aric acids stimulated the zoospore release rate at high concentration, the others phenolic acids all inhibited the zoospore release rate at anyconcentration. In addition, except for malic acid improved the mycelial growth at O. 05 g/L, the others organic acids inhibited the growth.Sporangium yield and zoospore release r
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2017.6.022