您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effect of Tebuconazole Enantiomers and Environmental Factors on Fumonisin Accumulation and FUM Gene Expression in Fusarium verticillioides

文献类型： 外文期刊

作者： Li, Na 1 ; Zhao, Junlong 1 ; Zhang, Rui 1 ; Deng, Luqing 1 ; Li, Jianfang 1 ; Gao, Yan 3 ; Liu, Chenglan 1 ;

作者机构： 1.South China Agr Univ, Key Lab Nat Pesticide & Chem Biol, Minist Agr, Wushan Rd 483, Guangzhou 510642, Guangdong, Peoples R China

2.South China Agr Univ, Key Lab Biopesticide Innovat & Applicat Guangdong, Wushan Rd 483, Guangzhou 510642, Guangdong, Peoples R China

3.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Guangdong, Peoples R China

关键词： tebuconazole; enantioselectivity; Fusarium verticillioides; fumonisin; FUM

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2018 年 66 卷 50 期

页码：

收录情况： SCI

摘要： Fusarium verticillioides is an important corn pathogen that can produce fumonisins (FBs) under certain environmental conditions. In this study, we evaluated the enantioselective impact of tebuconazole enantiomers on the growth and FB production of F. verticillioides on maize-based media at different abiotic factors. The expression of FB biosynthetic genes (FUMI and FUM6) was quantified by real-time reverse transcription polymerase chain reaction. The results showed that water activity (a(w)), temperature, and types of tebuconazole significantly affected the growth of F. verticillioides. The order of fungicidal activity was (-)-tebuconazole > rac-tebuconazole > (+)-tebuconazole. (-)-tebuconazole exhibited the maximal selective fungicidal activity (242-fold) against F. verticillioides at 0.95 a(w) and 35 degrees C. Production of fumonisin B-1 (FB1) and fumonisin B-2 (FB2) by F. verticillioides was influenced by a(w) temperature, types of tebuconazole, and dose. Under most conditions, (-)-tebuconazole showed stronger inhibition for FB1 and FB2 production than (+)-tebuconazole (1.87-2.85-fold reduction in FBs) and rac-tebuconazole. The optimal environmental condition for FB production was at 0.99 a(w) and 25 degrees C. Tebuconazole enantiomers differently affected FB biosynthetic gene (FUM1 and FUM6) expression, but the effects on FB production and gene expression showed no positive correlation. The present study provides a better understanding on ways to minimize FB production in corn treated with fungicides.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台