Antenna-predominant and male-biased CSP19 of Sesamia inferens is able to bind the female sex pheromones and host plant volatiles

Identification of candidate chemosensory genes in the antennal transcriptome of Tenebrio molitor (Coleoptera: Tenebrionidae)

“…CSPs can bind pheromone components in Mamestra brassicae (Jacquin-Joly et al, 2001), while in Sesamia inferens CSPs bind both sex pheromones and host plant volatiles (Zhang et al, 2014). However, in the American cockroach, Periplaneta americana, CSPs are expressed in the legs and are possibly involved in the formation of the epidermis of regenerating legs (Kitabayashi et al, 1998).…”

“…Intriguingly, although adult male T. molitor also produces a sex pheromone that mediates behavioral responses for the females (Bryning et al, 2005), we did not find a female antennae-specific OBP in this study. Recognition of male pheromone in this beetle species may involve other binding proteins, such as CSPs (Zhang et al, 2014). We identified additional genes that were expressed at equivalent levels in the antennae of both sexes.…”

“…CSPs, unlike OBPs, contain four positionally conserved cysteine residues that form two disulfide bridges (Pelosi et al, 2014). Some CSPs are distributed in the antennae sensillar lymph where they bind host volatiles and pheromone constituents (Dani et al, 2011;Zhang et al, 2014). Other CSPs are highly expressed in non-olfactory tissues, including pheromone glands, legs and wings, suggesting they participate in other physiological processes (Jacquin-Joly et al, 2001;Pelletier and Leal, 2011).…”

Discovery of Chemosensory Genes in the Oriental Fruit Fly, Bactrocera dorsalis

“…The major molecular components of insect olfaction include odorant-binding proteins (OBPs), odorant receptors (ORs), ionotropic receptors (IRs), sensory neuron membrane proteins (SNMPs) and odorant-degrading enzyme (ODEs) [6], and the major gustatory or contact chemosensation-related proteins are gustatory receptors (GRs) [7,8]. In addition, chemosensory proteins (CSPs) are also found in olfactory and gustatory organs of insects and are involved in the detection of chemicals [9–14]. …”

Identification and expression pattern of candidate olfactory genes in Chrysoperla sinica by antennal transcriptome analysis

“…CSPs are broadly expressed in many organs, including antennae (Jacquin-Joly et al, 2001;González et al, 2009), proboscises (Nagnan-Le Meillour et al, 2000), legs (Kitabayashi et al, 1998), wings (Ban et al, 2003), and pheromone glands (Jacquin-Joly et al, 2001), as well as other tissues. Although CSPs are thought to affect insect chemoreception by enhancing the solubility of semiochemicals and delivering them to the chemosensory receptors (Jacquin-Joly et al, 2001;Zhang et al, 2014), little is known about how they work.…”