Regulation of <i>Schistocerca gregaria</i> neuroparsin transcript levels by juvenile hormone and 20‐hydroxyecdysone

Claeys, Ilse; Breugelmans, Bert; Simonet, Gert; Franssens, Vanessa; Soest, Sofie Van; Broeck, Jozef Vanden

doi:10.1002/arch.20127

Cited by 18 publications

(12 citation statements)

References 24 publications

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“…Nevertheless, closer inspection shows they are different cell types (results not shown). The locust neuroparsin gene is expressed both in the central nervous system and in the fat body (Claeys et al, 2006), but this appears not to be the case for the D. virilis neuroparsin gene, which in the adult is well expressed in the head but not significantly in the abdomen or thorax (Fig. 3).…”

Section: Resultsmentioning

confidence: 88%

“…Nevertheless, the JH biosynthetic activity of corpora allata from locusts injected with either neuroparsin or neuroparsin antiserum were not significantly different from controls , suggesting a role for neuroparsin in locust reproduction and development independent of juvenile hormone. Treatment of locusts with JH or ecdysone increases transcription of the neuroparsin gene (Claeys et al, 2006), showing a direct regulation by both these hormones of the production of neuroparsin. This supports a role for this neurohormone in reproduction and development, at least in the locust.…”

Section: Introductionmentioning

confidence: 98%

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What the loss of the hormone neuroparsin in the melanogaster subgroup of Drosophila can tell us about its function

Veenstra¹

2010

Insect Biochemistry and Molecular Biology

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 98%

What the loss of the hormone neuroparsin in the melanogaster subgroup of Drosophila can tell us about its function

Veenstra¹

2010

Insect Biochemistry and Molecular Biology

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“…For as unusual as such an explanation seems, it could explain why they are made in such large amounts. In Locusta neuroparsin has an anti-juvenile hormone effect (Girardie et al, 1987 ), while in Schistocerca juvenile hormone and ecdysone increase transcripts for the neoneuroparsins, but not for neuroparsin (Claeys et al, 2006a ), thus suggesting that the structural difference may be associated with a functional difference between the neoneuroparsins and neuroparsin. Unfortunately, a neuroparsin receptor has not yet been identified and hence the relative binding and stimulating activities of neuroparsin and the neoneuroparsins cannot be determined.…”

Section: Discussionmentioning

confidence: 99%

The contribution of the genomes of a termite and a locust to our understanding of insect neuropeptides and neurohormones

2014

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The genomes of the migratory locust Locusta migratoria and the termite Zootermopsis nevadensis were mined for the presence of genes encoding neuropeptides, neurohormones, and their G-protein coupled receptors (GPCRs). Both species have retained a larger number of neuropeptide and neuropeptide GPCRs than the better known holometabolous insect species, while other genes that in holometabolous species appear to have a single transcript produce two different precursors in the locust, the termite or both. Thus, the recently discovered CNMa neuropeptide gene has two transcripts predicted to produce two structurally different CNMa peptides in the termite, while the locust produces two different myosuppressin peptides in the same fashion. Both these species also have a calcitonin gene, which is different from the gene encoding the calcitonin-like insect diuretic hormone. This gene produces two types of calcitonins, calcitonins A and B. It is also present in Lepidoptera and Coleoptera and some Diptera, but absent from mosquitoes and Drosophila. However, in holometabolous insect species, only the B transcript is produced. Their putative receptors were also identified. In contrast, Locusta has a highly unusual gene that codes for a salivation stimulatory peptide. The Locusta genes for neuroparsin and vasopressin are particularly interesting. The neuroparsin gene produces five different transcripts, of which only one codes for the neurohormone identified from the corpora cardiaca. The other four transcripts code for neuroparsin-like proteins, which lack four amino acid residues, and that for that reason we called neoneuroparsins. The number of transcripts for the neoneuroparsins is about 200 times larger than the number of neuroparsin transcripts. The first exon and the putative promoter of the vasopressin genes, of which there are about seven copies in the genome, is very well-conserved, but the remainder of these genes is not. The relevance of these findings is discussed.

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“…For instance, the neuropeptide corazonin plays a role in body‐colour polymorphism (Maeno et al ., 2004) and several parsins (i.e. pars intercerebralis peptides) have been suggested to take part in the control of the reproductive cycle (Claeys et al ., 2005, 2006a,b).…”

Section: Introductionmentioning

confidence: 99%

Quantitative RT‐PCR analysis of pacifastin‐related precursor transcripts during the reproductive cycle of solitarious and gregarious desert locusts

Breugelmans

Simonet

Hoef

et al. 2008

Insect Molecular Biology

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In locusts, little is known about the physiological and biochemical mechanisms regulating complex processes, such as reproduction and phase transition. The pacifastin family constitutes a family of peptidic inhibitors of serine proteases that are considered to be important regulators of several physiological processes in arthropods. We have performed a detailed transcript profiling analysis of two pacifastin-related peptide precursors, SGPP-2 and SGPP-4, during the reproductive cycle of adult desert locusts (Schistocerca gregaria). This quantitative real-time (RT)-PCR analysis revealed a temporal regulation of both transcripts, which is paralleled by several events that occur during the reproductive cycle of adult locusts. The observed temporal transcript profiles display a strong tissue-, gender- and phase-dependence. In addition, a partial regregarization experiment suggests that both transcript levels are regulated during phase transition and can be employed as molecular markers of the gregarization process.

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Regulation of Schistocerca gregaria neuroparsin transcript levels by juvenile hormone and 20‐hydroxyecdysone

Cited by 18 publications

References 24 publications

What the loss of the hormone neuroparsin in the melanogaster subgroup of Drosophila can tell us about its function

What the loss of the hormone neuroparsin in the melanogaster subgroup of Drosophila can tell us about its function

The contribution of the genomes of a termite and a locust to our understanding of insect neuropeptides and neurohormones

Quantitative RT‐PCR analysis of pacifastin‐related precursor transcripts during the reproductive cycle of solitarious and gregarious desert locusts

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