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Isolation and sequence of a partial vitellogenin cDNA from the cockroach, Blattella germanica (L.) (Dictyoptera, Blattellidae), and characterization of the vitellogenin gene expression
Author(s) -
Martín David,
Piulachs MariaDolors,
Comas Daniel,
Bellés Xavier
Publication year - 1998
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/(sici)1520-6327(1998)38:3<137::aid-arch4>3.0.co;2-p
Subject(s) - vitellogenin , biology , complementary dna , vitellogenins , vitellogenesis , cdna library , gene , dictyoptera , cockroach , microbiology and biotechnology , gene expression , genetics , oocyte , ecology , embryo
A partial cDNA clone of the vitellogenin gene from the cockroach Blattella germanica has been isolated from a cDNA expression library using an anti‐vitellin–vitellogenin antiserum probe. The analysis of cDNA inserts gave a sequence of 2,645 nucleotides corresponding to the 3′ region. The deduced amino acid sequence is 825 residues long and is similar to the homologous portion of the vitellogenin of other insect species, especially that of the mosquito Aedes aegypti . RNA hybridization studies indicated that the vitellogenin gene expression is limited to the fat body of adult females. The pattern of expression during the first vitellogenic cycle was approximately parallel to that of vitellogenin production by the fat body previously described. The availability of a cDNA probe for the B. germanica vitellogenin gene represents a useful tool to study the molecular action of hormones affecting vitellogenin synthesis in this species. Arch. Insect Biochem. Physiol. 38:137–146, 1998. © 1998 Wiley‐Liss, Inc.