کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1982432 1062287 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Citrus, a key insect eggshell protein
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش حشره شناسی
پیش نمایش صفحه اول مقاله
Citrus, a key insect eggshell protein
چکیده انگلیسی

Molecular aspects of chorion synthesis in insects have been studied deeply in species with meroistic ovaries. Information available in insects with panoistic ovaries is principally structural whereas molecular information in these species is scarce. This paper seeks to balance the above situation by describing a novel chorion gene, Citrus, from the cockroach Blattella germanica, a phylogenetically basal hemimetabolan insect with reproduction regulated by juvenile hormone and with panoistic ovaries. During previous work we discovered a series of novel genes which were specifically expressed during chorion formation in B. germanica. One of them, herein named Citrus, was peculiar due to its high copy number and its very transient expression. In the present paper we characterize Citrus in terms of structure and function. The most prominent structural feature is that the protein contains a motif which is repeated 33 times encompassing almost all the sequence. By using RNAi techniques we have demonstrated that Citrus is a key player in the building of the endochorion of B. germanica eggs.

Figure optionsDownload high-quality image (60 K)Download as PowerPoint slideResearch highlights
► A new chorion gene (Citrus) from the cockroach Blattella germanica is described.
► There are no homologues of Citrus in insect gene databases.
► Citrus protein is constituted by a motif repeated 33 times.
► RNAi experiments show that Citrus is a key endochorion protein.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Insect Biochemistry and Molecular Biology - Volume 41, Issue 2, February 2011, Pages 101–108
نویسندگان
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