کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2060267 1076309 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aggressiveness of different Fusarium graminearum chemotypes within a population from Northern-Central Italy
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Aggressiveness of different Fusarium graminearum chemotypes within a population from Northern-Central Italy
چکیده انگلیسی


• Aggressiveness of three chemotypes of F. graminearum strains are compared for the first time.
• There are highly significant correlations between aggressiveness indices from different aggressiveness assays.
• There is no significant difference in aggressiveness among the three different chemotypes.
• Potential of using the Petri-dish test for selection of F. graminearum inocula for breeding purposes.

The aggressiveness of 32 Fusarium graminearum strains isolated from durum wheat cultivated in Northern-Central Italy was assessed. The chemotype (15-acetyldeoxynivalenol-, 3-acetyldeoxynivalenol- or nivalenol-producer) of each strain was characterized with multiplex PCR. Two aggressiveness assays (single floret inoculation and the Petri-dish test), which yielded three aggressiveness indices, were used. One strain from southern Italy (moderately aggressive) was added as the positive control to evaluate the accuracy of the aggressiveness quantification in both assays. The results showed that all 32 F. graminearum strains are pathogenic and a wide range of aggressiveness levels was observed. The positive control strain is pathogenic and showed moderately aggressive in both assays, thus indicated that our aggressiveness quantifications are valid. Six highly aggressive strains, representing all three chemotypes, were stable in the different aggressiveness assays. There was no significant difference in aggressiveness among the three different chemotypes (P = 0.909–0.972) determined by three aggressiveness indices. Highly significant correlations of AUDPCstandard to mean and terminal disease severity (r = 0.91, P < 0.001 in both cases) reveal the potential of using the Petri-dish test for selection of F. graminearum inocula with the proper and/or varying aggressiveness levels for breeding purposes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mycoscience - Volume 55, Issue 1, January 2014, Pages 63–69
نویسندگان
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