کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8384461 | 1543644 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Isopod grazing induces down-regulation of Aspergillus nidulans anti-fungivore defence marker genes
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Variation in grazing intensity determines the way in which mycelial growth and physiology is influenced by invertebrate fungivores. Recently, low-intensity grazing by facultative mesofaunal fungivores, small dipteran larvae and collembola, was found to enhance the activity of fungal defensive secondary metabolism. Here, we ask whether higher intensity grazing by macrofaunal fungivores induces a different fungal response. To test this, we quantified changes in the expression of two anti-fungivore chemical defence marker genes, laeA and aflR, in the ascomycete Aspergillus nidulans exposed to grazing pressure exerted by individuals of the isopod Oniscus asellus. Compared to no and low-intensity grazing pressure, higher intensity grazing significantly reduced the transcript levels of these genes. This finding suggests a negative relationship between grazing pressure intensity and the capacity of a saprotrophic fungus to resist fungivory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fungal Ecology - Volume 20, April 2016, Pages 84-87
Journal: Fungal Ecology - Volume 20, April 2016, Pages 84-87
نویسندگان
Silvia Caballero Ortiz, Marko Rohlfs,