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Effect of fungicides commonly used for Fusarium head blight management on growth and fumonisin production by Fusarium proliferatum
Revista Argentina de Microbiología ( IF 1.8 ) Pub Date : 2020-06-24 , DOI: 10.1016/j.ram.2019.12.005
Eugenia Cendoya 1 , María Julia Nichea 1 , María Del Pilar Monge 1 , Vanessa G L Zachetti 1 , Stella Maris Chiacchiera 1 , María Laura Ramirez 1
Affiliation  

Fumonisin occurrence was reported in wheat grains and F. proliferatum has been suggested to be the main contributor to its presence in wheat. Thus, a survey was performed in order to study the impact of four commercial fungicides used in Argentina for controlling Fusarium head blight disease (epoxiconazole + metconazole, tebuconazole, pyraclostrobin + epoxiconazole, and prothioconazole) on growth and fumonisin production of two F. proliferatum strains in relation to water activity (aW; 0.99, 0.97, 0.95) and temperature (15 °C and 25 °C). Most fungicides reduced growth rates when compared to the control (reduction increased as fungicide concentration increased), and reduced fumonisin production when they were used at high doses; however, most fungicides enhanced fumonisin production at sublethal doses, with the exception of prothioconazole. Thus, fungicides used for FHB management could enhance fumonisin production by F. proliferatum strains present in wheat grains.



中文翻译:

枯萎病防治常用杀菌剂对增殖镰刀菌生长及伏马菌素产量的影响

据报道,伏马菌素存在于小麦籽粒中,而F. proliferatum被认为是其存在于小麦中的主要因素。因此,进行了一项调查,以研究在阿根廷用于控制镰刀菌枯萎病的四种商业杀菌剂(氟环唑 + 甲 康唑、戊唑醇、唑菌胺酯 + 氟环唑和丙硫菌唑)对两种F. proliferatum菌株的生长和伏马菌素产量的影响与水分活度 (a W ; 0.99, 0.97, 0.95) 和温度 (15  °C 和 25 ℃)。与对照相比,大多数杀菌剂都降低了生长速度(随着杀菌剂浓度的增加,减少量增加),并且在高剂量使用时会降低伏马菌素的产量;然而,除丙硫菌唑外,大多数杀菌剂在亚致死剂量下都能增强伏马菌素的产生。因此,用于 FHB 管理的杀菌剂可以提高小麦籽粒中存在的F. proliferatum菌株的伏马菌素产量。

更新日期:2020-06-24
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