酵母与植物保护

发布时间 : 星期三 文章酵母与植物保护更新完毕开始阅读

【Author】 HE Li-hong1,WANG Yue-hua2,LAN Xia3(1.College of Life Sciences,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China; 2.College of Life Sciences,Foshan Science and Technology College,Foshan 528000,China; 3.College of Agriculture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)

【机构】 仲恺农业工程学院生命科学学院; 佛山科学技术学院生命科学学院; 仲恺农业工程学院农学院;

【摘要】 以拮抗酵母菌膜醭毕赤酵母(Pichia membranaefaciens)和汉逊德巴利酵母(Debaryomyces hansenii)为试验材料,探讨了培养温度、培养时间、马铃薯葡萄糖液体培养基(PDB)装液量对其生长的影响以及其体外对柑桔指状青霉菌(Penicillium digitatum)的抑菌效果.结果表明,培养温度、培养时间、PDB装液量对2种拮抗菌生长的影响大小依次为:培养温度>培养时间>PDB装液量;汉逊德巴利酵母的生长速度比膜醭毕赤酵母快;拮抗菌对指状青霉菌的抑菌效果与其浓度有关,随着拮抗菌浓度的增加,其抑菌效果变得更加明显,其中1×106 CFU/mL的拮抗菌对指状青霉菌的抑菌效果最好,并且膜醭毕赤酵母的抑菌效果优于汉逊德巴利酵母. 更多还原

【Abstract】 Antagonistic yeast Pichia membranaefaciens and Debaryomyces hansenii from citrus were used to study on effects of culture temperature,culture time,PDB amount on their growth and their antimicrobial effects in vitro.The results showed that effects of three factors on antagonistic yeasts growth were culture temperature>culture time>PDB amount.The growth rate of Pichia membranaefaciens was faster than that of Debaryomyces hansenii.Antimicrobial effects became more obvious with the increase of... 更多还原

【关键词】 柑桔(Citrus reticulata Blanco); 拮抗菌; 指状青霉(Penicillium digitatum); 拮抗作用;

【Key words】 Citrus reticulata Blanco; antagonistic microorganism; Penicillium digitatum; antagonistic effect; 【基金】 仲恺农业工程学院校级科研基金(G3071305)资助项目

过表达海藻糖-6-磷酸合成酶拮抗酵母菌工程菌株的构建

Construction of Vector for High Trehalase by Overexpression of tps1 in

Antagonistic Yeast Pichia membranefaciens

【作者】 宋海超; 张勇; 符文英; 林明辉; 史学群;

【Author】 Song Haichao 1,Zhang Yong 2,Fu Wenying 3,Lin Minghui 4,Shi Xuequn 1(1 College of Environment and Plant Protection,Hainan University,Haikou 570228;2 Hainan Entry-Exit Inspection and Quarantine Bureau,Haikou 570311;3 College of Agriculture,Hainan University,Haikou 570228;4 Sanya Sci-Tech Academy for Crop Winter Multiplication,Sanya Hainan 572000)

【机构】 海南大学环境与植物保护学院; 海南出入境检验检疫局; 海南大学农学院; 三亚市南繁科学技术研究院;

【摘要】 本研究构建了带G418抗性的载体pFL61-G418,从酿酒酵母WT303菌株中克隆了真菌抗逆境基因tps1(海藻糖-6-磷酸合成酶基因),再将tps1基因插入到pFL61-G418载体的NotI位点,构建pFL61-G418-tps1表达载体,并将该表达载体转化进入野生型拮抗酵母膜醭毕赤酵母菌株中。构建过表达海藻糖-6-磷酸合成酶拮抗酵母菌工程菌株,增强拮抗酵母菌的抵抗逆境的生存能力,从而提高其生活力及与病原菌的竞争力。结果表明成功地构建了过表达海藻糖-6-磷酸合成酶拮抗酵母菌工程菌株,说明pFL61穿梭质粒可以用来转化野生型拮抗酵母,G418抗性可以作为转化子筛选的阳性标记。该重组表达载体的成功构建,为野生型拮抗酵母的遗传改良提供了重要的理论依据。 更多还原

【Abstract】 The G418 resistance expression vector pFL61-G418 was constructed and trehalose-6-P synthase gene tps1 from the strain WT-303 of Saccharomyces cerevisiae was cloned.pFL61-G418-tps1 expression vector was constructed,and it was transformed into Pichia membranefaciens by lithium acetate method.Overexpression of tps1 gene improved the stress tolerance of P.membranefaciens,enabled the cells to increase viability and biocontrol ability.We succeeded in construction of vector for high trehalase by overex... 更多还原

【关键词】 海藻糖; 拮抗酵母; 抗逆性; 载体构建; 过表达;

【Key words】 trehalose; antagonistic yeast; stress resistance; vector construction; overexpression; 【基金】 海南省自然科学基金“构建含海藻糖-6-磷酸合成酶基因的酵母转化载体”(807106)

柑橘采后绿霉病生防酵母菌的筛选、鉴定及其生防效果研究

Screening,identification of antagonistic yeast and its biocontrol efficacy against green mold caused by Penicillium digitatum of citrus fruit

【作者】 耿鹏; 张彦博; 胡美英; 陈少华; 瞿菲;

【Author】 GENG Peng,ZHANG Yan-bo,HU Mei-ying,CHEN Shao-hua,QU Fei(Key Laboratory of Natural Pesticide and Chemical Biology,Ministry of Education,South China Agricultural University,Guangzhou,Guangdong 510642,China)

【机构】 华南农业大学天然农药与化学生物学教育部重点实验室;

【摘要】 【目的】筛选能有效防治柑橘采后绿霉病菌(Penicillium digitatum)的拮抗酵母菌,为柑橘的采后保鲜提供参考。【方法】从园艺果园采集不同的水果样品,用稀释平板法分离筛选生防酵母菌株,并进行鉴定;采用PDB液体培养试验和刺伤接种的方法,研究不同浓度酵母菌悬浮液对离体和活体柑橘绿霉病菌的防治效果。【结果】获得1株拮抗酵母菌HP-10,结合生理生化特性及18S rDNA序列同源性分析,将其鉴定为马克斯克鲁维酵母(Kluyveromyces ma-rxianus)。离体和活体抑菌试验表明,菌株HP-10悬浮液能有效抑制绿霉病菌孢子的萌发;用108CFU/mL HP-10悬浮液处理病原菌孢子时,其萌发率仅为3.61%,而对照的萌发率为88.06%;25℃条件下,用108CFU/mL的酵母悬浮液处理柑橘果实2 d后,发病率仅为6.67%,病斑直径仅为2.14 mm,显著低于对照的发病率(93.33%)和病斑直径(53.31mm)。【结论】不同浓度HP-10菌悬液对柑橘绿霉病菌均具有一定的防治效果,表现出良好的生防潜力。 更多还原

【Abstract】 【Objective】 The study focused on isolating and characterizing yeast with abilities to control diseases of citrus fruits,to provide an alternative strategy to control postharvest disease of citrus fruits.【Method】 An antagonistic yeast HP-10 was preliminarily identified as Kluyveromyces marxianus based on physiological-biochemical

characteristics and the similarity analysis of its 18S rDNA sequence.The efficacy of HP-10 to Penicilluium digitatum in vitro and in vivo was studied by PDB trials and w... 更多还原 【关键词】 柑橘绿霉病; 生防酵母菌; 采后病害; 生防潜力;

【Key words】 Penicillium digitatum; antagonist yeast; post-harvest disease; biological control; 【基金】 国家自然科学基金项目(30871660);广东省科技计划项目(2008B050100045)

拮抗酵母菌对果蔬采后病害生防增效途径及机理研究进展

Recent Advances in Research on Approaches and Mechanisms of Improving Biocontrol Efficacy of Antagonistical Yeasts against Postharvest Diseases of

Fruits and Vegetables

【作者】 周雅涵; 罗杨; 曾凯芳;

【Author】 ZHOU Ya-han1,LUO Yang1,ZENG Kai-fang1,2,(1.College of Food Science,Southwest University,Chongqing 400715,China; 2.Chongqing Special Food Programme and Technology Research Center,Chongqing 400715,China)

【机构】 西南大学食品科学学院; 重庆市特色食品工程技术研究中心;

【摘要】 本文在总结拮抗酵母菌特点的基础上,针对限制其商业化应用的主要原因,重点阐述增强拮抗酵母菌对果蔬采后病害生防效力的途径及机理,最后进一步提出拮抗酵母菌增效技术未来的研究方向。以此,为拮抗酵母菌的商业化推广和应用及生物防治技术在控制采后果蔬病害中的应用提供指导。 更多还原

【Abstract】 Based on the characteristics of antagonistical yeasts and the major reasons for the limitation in commercial application,the current approaches and mechanisms of improving biocontrol efficacy of antagonistical yeasts against postharvest diseases of fruits and vegetables are discussed.Prospective directions for research on technologies for improving the biocontrol efficacy of antagonistical yeasts are also put forward.This paper will provide some guidance for the commercialization of antagonistic... 更多还原

【关键词】 拮抗酵母菌; 生物防治; 果蔬; 采后病害; 增效;

【Key words】 antagonistical yeasts; biological control; fruits and vegetables; postharvest disease; synergism; 【基金】 国家自然科学基金项目(31071618);中央高校基本科研业务费专项资金项目(XDJK2010B001)

马克斯克鲁维酵母对柑橘采后绿霉病的抑制效果

Combination of Kluyveromyces marxianus and ammonium molybdate for

control of green mold caused by Penicillium digitatum on citrus fruits

【作者】 耿鹏; 陈少华; 胡美英; 瞿菲; 张彦博; 安国栋;

【Author】 GENG Peng CHEN Shao-hua HU Mei-ying QU Fei ZHANG Yan-bo AN Guo-dong Key Laboratory of Natural Pesticide and Chemical biology,Ministry of Education, South China Agricultural University,Guangzhou 510642,China

【机构】 华南农业大学天然农药与化学生物学教育部重点实验室;

【摘要】 通过活体(in vivo)和离体(in vitro)试验,研究拮抗酵母菌株Kluyveromyces marxianus与不同浓度钼酸铵混合使用对柑橘采后绿霉病(Penicillium digitatum)的防治效果,以及钼酸铵对K.marxianus菌株生长和繁殖的影响。结果表明:不同浓度的钼酸铵对K.marxianus的生长和繁殖没有不利影响;钼酸铵对酵母菌在柑橘果实伤口处的生长和繁殖有刺激作用;当K.marxianus与浓度为1mmol/L钼酸铵混合使用时对控制柑橘果实绿霉病的效果最好,3和6d的发病率分别为28.33%和60.00%,显著低于对照处理的93.33%和100%的发病率,表明K.marxianus与钼酸铵混合使用在控制柑橘绿霉病方面具有潜在的应用价值。 更多还原

【Abstract】 With the methods of in vivo and in vitro,the potential enhancement of Kluyveromyces marxianus by ammonium molybdate(NH4Mo) to control green mold caused by Penicillium digitatum on citrus fruit was investigated.Meanwhile,the effect of NH4Mo on growth and proliferation of K.marxianus was tested.The results showed that NH4Mo at different concentration did not inhibit the growth and proliferation of K.marxianus in culture medium or wounds of citrus fruits.The combination of K.marxianus and NH4Mo had... 更多还原

【关键词】 拮抗酵母菌; 绿霉病; 生防效果; 采后病害; 钼酸铵; 柑橘;

【Key words】 Kluyveromyces marxianus; Penicillium digitatum; biocontrol efficacy; postharvest diseases; ammonium molybdate; citrus fruits;

【基金】 国家自然科学基金项目(30871660);广东省科技计划项目(2008B020900007)

茉莉酸甲酯提高膜醭毕赤酵母对杨梅果实采后绿霉病生防效力的研究

Study on Imporved Biocontrol of Pichia membranifaciens for Control of Green

Mold Decay on Chinese Bayberry Fruit by Methyl Jasmonate

【作者】 汪开拓; 郑永华; 尚海涛; 金鹏; 芮怀瑾;

【Author】 Wang Kai-tuo1,2,Zheng Yong-hua2,Shang Hai-tao2,Jin Peng2,Rui Huai-jin2 1(Department of Biology,Chongqing Three Gorges University,Chongqing 404100,China) 2(College of Food Science and Technology,Nanjing Agricultural University,Nanjing 210095,China)

【机构】 重庆三峡学院生物系; 南京农业大学食品科技学院;

【摘要】 研究了茉莉酸甲酯(Methyl jasmonate,MeJA)复合膜醭毕赤酵母(Pichia membranaefaciens)处理对\乌种\杨梅果实由桔青霉(Penicillium citrinum)引起的绿霉病的抑制效果,同时分析了MeJA对酵母菌和病原菌生长以及果实抗病性的影响。结果显示:MeJA可有效提升P.membranefacien生防效力,10μmol/L MeJA与1×109CFU/mL P.membranefacien菌悬液的复合处理比单一处理能更有效抑制杨梅果实绿霉病的发生;该复合处理也更为显著的诱导了杨梅果实抗病相关酶活性的上升;此外,MeJA还可直接提高P.membranaefaciens在NYDB培养基和杨梅果实伤口处的数量,但MeJA对病原菌P.citrinum生长无抑制效果。这些结果表明,MeJA主要是通过直接促进拮抗酵母生长以及间接诱导果实抗病性来提升P.membranaefaciens生防效力,从而起到有效抑制杨梅果实采后腐烂的作用。 更多还原

【Abstract】 The present study was to investigate the effect of the combined treatment of MeJA and antagonistic yeast Pichia membranifaciens for control of green mold decay caused by Penicillium citrinum on Chinese bayberry fruit(Myrica rubra Seib & Zucc.Cv Wumei) and to analyze the effect of MeJA on the growth of the yeast and pathogen as well as the disease resistance.The results exhibited that the biocontrol activity of P.membranifaciens on the disease was enhanced by the addition of MeJA,1×109 CFU/mL... 更多还原 【关键词】 杨梅; 病害; 茉莉酸甲酯; 膜醭毕赤酵母; 桔青霉;

【Key words】 Chinese bayberry; disease; methyl jasmonate; P.membranaefaciens; P.citrinum; 【基金】 国家自然科学基金资助项目(No.31071616);重庆市高校创新团队建设计划(No.201040)

联系合同范文客服:xxxxx#qq.com(#替换为@)