Arid
DOI10.1016/j.jinsphys.2013.03.005
In vivo effect of Neuropeptide F on ecdysteroidogenesis in adult female desert locusts (Schistocerca gregaria)
Van Wielendaele, Pieter; Wynant, Niels; Dillen, Senne; Badisco, Liesbeth; Marchal, Elisabeth; Vanden Broeck, Jozef
通讯作者Van Wielendaele, Pieter
来源期刊JOURNAL OF INSECT PHYSIOLOGY
ISSN0022-1910
EISSN1879-1611
出版年2013
卷号59期号:6页码:624-630
英文摘要

Neuropeptides are important regulatory factors that mediate key life processes, both in vertebrates and invertebrates. Many insect neuropeptides display pleiotropic activities, which means that they can influence multiple aspects of insect physiology. In the fruit fly, Drosophila melanogaster, Neuropeptide F (NPF) mediates diverse physiological processes, such as learning, stress responses, feeding and male courtship behavior. In locusts, only a truncated form of the predicted "full-length" NPF, the nonapeptide "trNPF", has been isolated. This nonapeptide previously proved to be biologically active, since it was shown to influence food intake and weight increase, as well as oocyte growth in adult female desert locusts (Schistocerca gregaria [Forskal]). In the present study, we have further analyzed the effect of trNPF on female reproductive physiology in S. gregaria. We confirmed that daily trNPF injections in adult females elicit an increase of oocyte size. In addition, an RNAi-mediated knockdown of the Schgr-NPF precursor transcript in adult female locusts resulted in the opposite effect, i.e. significantly smaller oocytes. Moreover, we discovered that daily injections of trNPF in adult female S. gregaria, caused higher ecdysteroid titers in the ovaries and accelerated the appearance of ecdysteroid peaks in the hemolymph of these animals. The RNAi-based knockdown of the Schgr-NPF precursor transcript clearly resulted in reduction of both hemolymph and ovarian ecdysteroid concentrations, confirming the stimulatory effects of trNPF injettions on adult female etclygtereid leVeTS. The ObServe-d re-sults are disctiss-e-d in relation to previous reports on NPF activities in locusts and other insects. (C) 2013 Elsevier Ltd. All rights reserved.


英文关键词Ecdysone Insect Oocyte maturation Peptide Reproduction
类型Article
语种英语
国家Belgium
收录类别SCI-E
WOS记录号WOS:000325187800006
WOS关键词Y-LIKE ; OVARIAN DEVELOPMENT ; DROSOPHILA-MELANOGASTER ; EMBRYONIC-DEVELOPMENT ; ENZYME-IMMUNOASSAY ; CORPORA CARDIACA ; GERMAN-COCKROACH ; INSULIN-LIKE ; FOOD ; IDENTIFICATION
WOS类目Entomology ; Physiology ; Zoology
WOS研究方向Entomology ; Physiology ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178544
作者单位Katholieke Univ Leuven, Inst Zool, Dept Anim Physiol & Neurobiol, B-3000 Louvain, Belgium
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Van Wielendaele, Pieter,Wynant, Niels,Dillen, Senne,et al. In vivo effect of Neuropeptide F on ecdysteroidogenesis in adult female desert locusts (Schistocerca gregaria)[J],2013,59(6):624-630.
APA Van Wielendaele, Pieter,Wynant, Niels,Dillen, Senne,Badisco, Liesbeth,Marchal, Elisabeth,&Vanden Broeck, Jozef.(2013).In vivo effect of Neuropeptide F on ecdysteroidogenesis in adult female desert locusts (Schistocerca gregaria).JOURNAL OF INSECT PHYSIOLOGY,59(6),624-630.
MLA Van Wielendaele, Pieter,et al."In vivo effect of Neuropeptide F on ecdysteroidogenesis in adult female desert locusts (Schistocerca gregaria)".JOURNAL OF INSECT PHYSIOLOGY 59.6(2013):624-630.
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