Publication
Title
The pigmentotropic hormone []-corazonin, absent in a **Locusta migratoria** albino strain, occurs in an albino strain of **Schistocerca gregaria**
Author
Abstract
[His(7)]-corazonin has recently been identified in the corpora cardiaca (CC) of two locust species, the migratory locust, Locusta migratoria and the desert locust, Schistocerca gregaria, as the dark colour inducing neurohormone. Here, we investigate whether [His(7)]-corazonin occurs in the brain-CC axis of a Schistocerca albino strain. From data obtained by immunocytochemistry, injection experiments, chromatographic and mass spectrometric analysis of brain and CC tissues, it could be concluded that an albino strain of S. gregaria from Denmark contains authentic [His(7)]-corazonin. This was unequivocally demonstrated by sequencing the [His(7)]-corazonin-immunoreactive factor in albino Schistocerca brain-CC extracts with ESI-Qq-oa-TOF mass spectrometry. Albinism in this strain is hence not caused by the deficiency of authentic [His(7)]-corazonin in the: brain-CC axis, nor by defects in release. Conversely to L. migratoria albinos, injection of [His(7)]-corazonin failed to induce dark pigmentation in Schistocerca albinos. Therefore, albinism in the investigated Schistocerca strain is likely to be situated at the level of the receptor. signal transduction mechanisms or of pigment biosynthesis. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.
Language
English
Source (journal)
Molecular and cellular endocrinology. - Amsterdam
Publication
Amsterdam : 2000
ISSN
0303-7207
Volume/pages
168:1-2(2000), p. 101-109
ISI
000165062000010
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 25.03.2015
Last edited 19.06.2017