Tunisian Population of the Wheat Pathogen Mycosphaerella graminicola is Still Fully Sensitive to Strobilurin Fungicides  

作　　者：Mouna Naouari All Siah Mohamed Elgazzah Philippe Reignault Patrice Halama 

机构地区：[1]Laboratory of Population Genetics and Biological Resources, El Manar University, Tunis 2092, Tunisia [2]Laboratory of Biotechnology and Management of Pathogens in Agriculture, GIS PhyNoPi, Higher Institute of Agriculture,Catholic University of Lille, Lille cedex F-59046, France [3]Plant-Fungus Interactions and Remediation Team, UCEIV Laboratory, GIS PhyNoPi, Littoral C6te d'Opale University, Calaiscedex F-62228, France

出　　处：《Journal of Agricultural Science and Technology(A)》2013年第12期955-959,共5页农业科学与技术（A）

摘　　要：Mycosphaerella graminieola （anamorph： Zymoseptoria tritici） is the causal agent of Septoria tritici blotch, the most frequently occurring disease on wheat crops worldwide. A set of 163 monoconidial isolates of this fungus were sampled in 2012 from five geographical locations of Tunisia （Bizerte, B6ja, Kef, Jendouba and Siliana） in order to examine the status of strobilurin resistance of M. graminicola in this country. The resistance was assessed by using PCR-based mismatch mutation assay that determined the cytochrome b substitution G143A responsible for strobilurin resistance. All isolates were found sensitive since they possessed the wild-type allele G143 conferring sensitivity. This study confirms previous reports on the fungus in Tunisia and reveals that the Tunisian population of M. graminicola remains fully sensitive to strobilurin fungicides. An appropriate management of strobilurin applications in Tunisia is thereby recommended to prevent local development and widespread of resistance, as in Europe, where pathogen populations are fully resistant to strobilurins today.

关 键 词：Mycosphaerella graminicola G 143A substitution strobilurin resistance. 

分 类 号：S858.28[农业科学—临床兽医学] TQ455.4[农业科学—兽医学]