The interactions between juvenile hormone (JH), lipophorin, vitellogenin, and JH esterases in two cockroach species

Engelmann, Franz; Malá, Jaroslava

doi:10.1016/s0965-1748(00)00051-5

Cited by 37 publications

(22 citation statements)

References 21 publications

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“…Although the mechanisms of JH uptake by tissues are still incompletely understood (Parra-Peralbo and Culi, 2011; Rodríguez-Vázquez et al, 2015; Engelmann and Mala, 2000; Suzuki et al, 2011), the TF proteins apolipophorin, hexamerin, JH-binding protein and vitellogenin have all been implicated in JH binding and transport between hemolymph and tissues (Goodman and Granger, 2009; Rodríguez-Vázquez et al, 2015; Engelmann and Mala, 2000; Suzuki et al, 2011; Amsalem et al, 2014), and these factors may be responsible for transporting JH into the foregut. Unfortunately, even in Drosophila mechanisms of JH uptake by tissues are still unclear (Rodríguez-Vázquez et al, 2015; Engelmann and Mala, 2000; Suzuki et al, 2011; Parra-Peralbo and Culi, 2011). Extracellular miRNAs are secreted and transported through a variety of pathways, but the functional relevance of such molecules is still controversial (Sarkies and Miska, 2013; Turchinovich et al, 2016; Masood et al, 2016; Søvik et al, 2015; Rayner and Hennessy, 2013).…”

Section: Discussionmentioning

confidence: 99%

Oral transfer of chemical cues, growth proteins and hormones in social insects

LeBoeuf

Waridel

Brent

et al. 2016

eLife

109

120

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Social insects frequently engage in oral fluid exchange – trophallaxis – between adults, and between adults and larvae. Although trophallaxis is widely considered a food-sharing mechanism, we hypothesized that endogenous components of this fluid might underlie a novel means of chemical communication between colony members. Through protein and small-molecule mass spectrometry and RNA sequencing, we found that trophallactic fluid in the ant Camponotus floridanus contains a set of specific digestion- and non-digestion related proteins, as well as hydrocarbons, microRNAs, and a key developmental regulator, juvenile hormone. When C. floridanus workers’ food was supplemented with this hormone, the larvae they reared via trophallaxis were twice as likely to complete metamorphosis and became larger workers. Comparison of trophallactic fluid proteins across social insect species revealed that many are regulators of growth, development and behavioral maturation. These results suggest that trophallaxis plays previously unsuspected roles in communication and enables communal control of colony phenotypes.DOI: http://dx.doi.org/10.7554/eLife.20375.001

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Section: Discussionmentioning

confidence: 99%

Oral transfer of chemical cues, growth proteins and hormones in social insects

LeBoeuf

Waridel

Brent

et al. 2016

eLife

109

120

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“…Our present values are somewhat higher than those preliminary reported (Camps et al 1987), and fall within the same order of magnitude of those published by Sevala and co-workers (1999). In other cockroaches, maximal levels of circulating JH are also found in the adult vitellogenic female, for example, in L. maderae , in which up to 400 ng/ml have been measured (Engelmann and Mala 2000), and D. punctata , which shows the highest JH levels ever measured in a cockroach, reaching 1500 ng/ml in full vitellogenesis (Tobe et al 1985). …”

Section: Discussionmentioning

confidence: 99%

Juvenile Hormone Titer Versus Juvenile Hormone Synthesis in Female Nymphs and Adults of the German Cockroach,Blattella germanica

Treiblmayr¹,

Pascual

Piulachs

et al. 2006

Journal of Insect Science

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Patterns of juvenile hormone have been intensively studied in the cockroach Blattella germanica under different physiological situations. However, data have been mainly obtained in vitro, and refer to hormone synthesized by isolated corpora allata, whereas information available on hormone concentration in the hemolymph is restricted to adult females. In order to complement our studies in vitro, we have measured juvenile hormone titer in the hemolymph of B. germanica females in four characteristic physiological situations: penultimate and last instar nymphs, adults during the first vitellogenic cycle, and adults transporting egg cases (ootheca). In general, a significant positive correlation between rates of hormone synthesis and concentration in the hemolymph is observed. The main disparities appear in the penultimate day of the period of ootheca transport, where titer is high whereas synthesis is low, and on day 6 of the first vitellogenic cycle, where synthesis increases whereas titer decreases. At these stages, the observed disparities between synthesis and titer might be explained by differential action of degradation enzymes.

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“…In other cockroaches such as L. maderae, control of vitellogenesis is thought to be dependent on the fluctuation of the JH titer through the interplay among JH-binding proteins and JH degrading enzymes (for a relevant discussion, see Engelmann and Mala, 2000).…”

Section: Other Insectsmentioning

confidence: 99%

Vitellogenesis and Post-Vitellogenic Maturation of the Insect Ovarian Follicle

Swevers

2005

Comprehensive Molecular Insect Science

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The interactions between juvenile hormone (JH), lipophorin, vitellogenin, and JH esterases in two cockroach species

Cited by 37 publications

References 21 publications

Oral transfer of chemical cues, growth proteins and hormones in social insects

Oral transfer of chemical cues, growth proteins and hormones in social insects

Juvenile Hormone Titer Versus Juvenile Hormone Synthesis in Female Nymphs and Adults of the German Cockroach,Blattella germanica

Vitellogenesis and Post-Vitellogenic Maturation of the Insect Ovarian Follicle

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