کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2181491 1095299 2008 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The White Collar protein WcoA of Fusarium fujikuroi is not essential for photocarotenogenesis, but is involved in the regulation of secondary metabolism and conidiation
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
The White Collar protein WcoA of Fusarium fujikuroi is not essential for photocarotenogenesis, but is involved in the regulation of secondary metabolism and conidiation
چکیده انگلیسی

The fungal proteins of the White Collar photoreceptor family, represented by WC-1 from Neurospora crassa, mediate the control by light of different biochemical and developmental processes, such as carotenogenesis or sporulation. Carotenoid biosynthesis is induced by light in the gibberellin-producing fungus Fusarium fujikuroi. In an attempt to identify the photoreceptor for this response, we cloned the only WC-1-like gene present in the available Fusarium genomes, that we called wcoA. The predicted WcoA polypeptide is highly similar to WC-1 and contains the relevant functional domains of this protein. In contrast to the Neurospora counterpart, wcoA expression is not affected by light. Unexpectedly, targeted wcoA disruptant strains maintain the light-induced carotenogenesis. Furthermore, the wcoA mutants show a drastic reduction of fusarin production in the light, and produce less gibberellins and more bikaverins than the parental strain under nitrogen-limiting conditions. The changes in the production of the different products indicate a key regulatory role for WcoA in secondary metabolism of this fungus. Additionally, the mutants are severely affected in conidiation rates under different culture conditions, indicating a more general regulatory role for this protein.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fungal Genetics and Biology - Volume 45, Issue 5, May 2008, Pages 705–718
نویسندگان
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