Juvenile hormone: Production, regulation, current application in vector control and its future applications

Aliah, N A Nur; Ab‐Rahim, Sharaniza; Moore, Hannah E.; Heo, Chong Chin

doi:10.47665/tb.38.3.066

Cited by 13 publications

(9 citation statements)

References 51 publications

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“…Juvenile hormone analogues such as methoprene can be used to kill insects because high doses of these chemicals perturb development (Troisi & Riddiford, 1974; Tay & Lee, 2014; Nur Aliah et al ., 2021). Similarly, in C. obscurior , survival of treated brood dropped considerably when high doses (5 mg/ml) were administered (Schrempf & Heinze, 2006).…”

Section: Resultsmentioning

confidence: 99%

Sex- and caste-specific developmental responses to juvenile hormone in an ant with maternal caste determination

Brülhart,

Süß,

Oettler

et al. 2023

Preprint

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Queen-worker caste polyphenism in social insects is a prime example for developmental plasticity. Most of what we know about caste development comes from studies of the honeybee, in which female caste is determined during larval development and workers retain functional ovaries. The ant genusCardiocondylais one of only few genera in which complete worker sterility has evolved, so that adult workers completely lack reproductive organs. InC. obscurior, queen- and worker-destined individuals are distinct in their development by late-embryogenesis, and castes can be distinguished in a non-invasive manner from this stage onwards. This provides the opportunity to investigate the degree of flexibility in caste development in a species with early caste determination. Using topical juvenile hormone treatment, a method known to influence caste determination and differentiation in some species, we investigated whether hormone manipulation affects the development and growth of queen and worker-destined late-stage embryos and larvae, as well as of early-stage embryos which cannot yet be distinguished by caste. We found no effect of hormone treatment on female caste ratios or body sizes in any of the treated stages, even though individuals reacted to heightened hormone availability with increases in the expression ofkrüppel-homolog 1, a conserved JH first-response gene. In contrast, hormone treatment resulted in the emergence of significantly larger males. These results show that inC. obscurior, early, presumably maternal caste determination leads to irreversible and highly-canalized caste-specific development and growth.

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Section: Resultsmentioning

confidence: 99%

Sex- and caste-specific developmental responses to juvenile hormone in an ant with maternal caste determination

Brülhart,

Süß,

Oettler

et al. 2023

Preprint

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show abstract

“…Previous studies have revealed the possibility of differential biosynthesis between JH types and insect orders. ,, Noriega et al indicated that insects pass through a mevalonate pathway (MVAP) to synthesize JH III, after which the pathway of JH synthesis begins to branch. In the terminal step of synthesis, epoxidation precedes methylation in Lepidoptera, and the opposite occurs in Diptera, Coleoptera, Orthoptera, and Reticoptera .…”

Section: Discussionmentioning

confidence: 99%

“…10−12 To date, eight types of JHs have been identified in insects, namely, JH 0, JH I, JH II, JH III, 4-methyl JH I, JHB 3 , JHSB 3 , and MF. 13 JH 0 was first reported in embryos of Manduca sexta, 7 JH I and JH II were identified in M. sexta and Hyalophora cecropia, 5,6 and JH III is present in the majority of insects. 14 JHSB 3 was first found in Plautia stali, 9,15 JHB 3 is present in Drosophila melanogaster, 8 and MF is found in Sarcophaga bullata, Drosophila melanogaster and Lucilia cuprina.…”

Section: Introductionmentioning

confidence: 99%

“…In 1934, Wigglesworth discovered an “inhibiting hormone” in Hemiptera: Triatominae, which prevents metamorphosis of nymphs of the bed bug Rhodnius prolixus and is thus called Juvenile Hormone (JH). − The structure of JH I was first determined in 1967, and other JHs have been continuously reported since then. − JHs are secreted and biosynthesized by the corpus allatum (CA) and play key roles in many processes of insect development and reproduction, including inhibition of metamorphosis, caste determination and differentiation, stimulation of flight and migration, regulation of reproduction, control of diapause, stress resistance, and aging. − To date, eight types of JHs have been identified in insects, namely, JH 0, JH I, JH II, JH III, 4-methyl JH I, JHB 3 , JHSB 3 , and MF . JH 0 was first reported in embryos of Manduca sexta, JH I and JH II were identified in M.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Detection and Distribution of Five Juvenile Hormones in 58 Insect Species and the Absolute Configuration in 32 Insect Species

Yi,

Ba,

Luo

et al. 2023

J. Agric. Food Chem.

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Juvenile hormone (JH) plays an important role in regulating various insect physiological processes. Herein, a novel method (chiral and achiral) for the simultaneous detection of five JHs was established by processing a whole insect without complicated hemolymph extraction. The proposed method was used to determine the distribution of JHs in 58 insect species and the absolute configuration of JHs in 32 species. The results showed that JHSB3 was uniquely synthesized in Hemiptera, JHB3 was unique to Diptera, and JH I and JH II were unique to Lepidoptera. JH III was present in most insect species surveyed, with social insects having generally higher JH III titers. Interestingly, JHSB3 and JHB3, both double epoxidation JHs, were found in insects with sucking mouthparts. The absolute conformation of JH III and the 10C of the detected JHs were all R stereoisomers.

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“…This study mainly focuses on JH, a unique insect hormone that is involved in moulting, reproduction, mating and behavioural regulation of insects, which is considered one of the most important hormones for insect life (figure 1) [34,35]. Furthermore, JHs are evolutionarily conserved in insects with both complete and incomplete metamorphosis [35][36][37][38]. Thus, JHs signalling pathway can provide targets for the synthesis of pest control agents.…”

Section: Introductionmentioning

confidence: 99%

Krüppel-homologue 1regulates the development ofTuta absolutaand its cascade regulation pattern in the juvenile hormone signalling pathway

Wang

Tang

et al. 2023

Open Biol.

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Tomato leaf miner, Tuta absoluta (Meyrick), is one of the most destructive quarantine pests globally. It has been confirmed that Krüppel-homologue 1 ( kr-h1 ) plays a key role in the regulation of juvenile hormone (JH). However, it is unclear how kr-h1 regulates the synthesis of JH and its cascade regulation pattern in tomato leaf miner. Here, we obtained the six JH signalling genes ( kr-h1 , Methoprene-tolerant , Forkhead box O , Juvenile acid methyltransferase , Juvenile hormone esterase and Fatty acid synthase 2 ), and applied RNA interference to explore the role of kr-h1 and the seven genes (plus Vitellogenin ) regulation relationship in T. absoluta . Bioinformatics analysis revealed the structural characteristics of kr-h1 protein and JH receptor Met, which contained eight C2H2 zinc finger structures and three typical domains of the bHLH-PAS family, respectively. The expression levels of Met and Vg were upregulated after RNAi of kr-h1 gene, while the gene levels of JHAMT and FAS2 were downregulated. Furthermore, topical application of JH analogue to second instar larvae could induce the expression of kr-h1 and inhibit the expression of Met . Our study reveals the mechanism by which kr-h1 regulates JH pathway genes, which could be applied to control the growth of tomato leaf miners.

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Juvenile hormone: Production, regulation, current application in vector control and its future applications

Cited by 13 publications

References 51 publications

Sex- and caste-specific developmental responses to juvenile hormone in an ant with maternal caste determination

Sex- and caste-specific developmental responses to juvenile hormone in an ant with maternal caste determination

Simultaneous Detection and Distribution of Five Juvenile Hormones in 58 Insect Species and the Absolute Configuration in 32 Insect Species

Krüppel-homologue 1regulates the development ofTuta absolutaand its cascade regulation pattern in the juvenile hormone signalling pathway

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