Juvenile hormone and colony conditions differentially influence cytochrome P450 gene expression in the termite Reticulitermes flavipes*

@article{Zhou2006JuvenileHA,
  title={Juvenile hormone and colony conditions differentially influence cytochrome P450 gene expression in the termite Reticulitermes flavipes*},
  author={X Zhou and C. Song and Traci L. Grzymala and Faith M. Oi and Michael E Scharf},
  journal={Insect Molecular Biology},
  year={2006},
  volume={15}
}
In lower termites, the worker caste is a totipotent immature stage that is capable of differentiating into other adult caste phenotypes. We investigated the diversity of family 4 cytochrome P450 (CYP4) genes in Reticulitermes flavipes workers, with the specific goal of identifying P450s potentially involved in regulating caste differentiation. Seven novel CYP4 genes were identified. Quantitative real‐time PCR revealed the tissue distribution of expression for the seven CYP4s, as well as… 
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TLDR
The present study investigated the role of Cyp15F1 in termite caste polyphenism and specifically tested the hypothesis that it plays a role in JH-dependent caste differentiation and reinforced the concept of environmental caste determination in termites by revealing how primer pheromones can directly influence Cyp15 expression and caste differentiation.
Hexamerin-based regulation of juvenile hormone-dependent gene expression underlies phenotypic plasticity in a social insect
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Effects of Caste on the Expression of Genes Associated with Septic Injury and Xenobiotic Exposure in the Formosan Subterranean Termite
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Termites are valuable models for studying gene expression involved in response to septic injury, immunity and detoxification in relation to caste membership with constitutive and induced expression of most target genes being higher in workers than in soldiers.
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Differential Impacts of Juvenile Hormone , Soldier Head Extract and Alternate Caste Phenotypes on Host and Symbiont Gene Expression in the Gut of the Termite Reticulitermes flavipes
TLDR
The results show that JH impacts hundreds of termite and symbiont genes within 24-hr, strongly suggesting a role for the termite gut in JH-dependent caste determination and likely that gene expression outside the gut may be of equal or greater importance than gut gene expression.
Differential impacts of juvenile hormone, soldier head extract and alternate caste phenotypes on host and symbiont transcriptome composition in the gut of the termite Reticulitermes flavipes
TLDR
The authors' results show that JH impacts hundreds of termite and symbiont genes within 24-hr, strongly suggesting a role for the termite gut in JH-dependent caste determination and in strong agreement with previous studies that specifically investigated soldier caste regulation.
Characterization of five CYP4 genes from Asian citrus psyllid and their expression levels in Candidatus Liberibacter asiaticus‐infected and uninfected psyllids
TLDR
Higher expression of the five CYP4 genes was found in nymphs than adults, which is congruent with previous results indicating higher levels of cytochrome P450 monooxygenases in nipples than adults.
Comparison of queen-specific gene expression in related lower termite species.
TLDR
Only three genes showed a conserved and highly preferential expression in female neotenics, suggesting that their products may play important roles in female reproductives, in particular in controlling caste determination and reproductive division of labor.
Remodeling of the juvenile hormone pathway through caste‐biased gene expression and positive selection along a gradient of termite eusociality
TLDR
Compared the expression of JH pathway genes between workers and queens in two lower termites and a higher termite to that of analogous nymphs and adult females of the noneusocial cockroach Blattella germanica, it is found that JH signaling has undergone major changes in this eusocial termite.
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