Mouthparts and stylet penetration of the lac insect Kerria lacca (Kerr) (Hemiptera:Tachardiidae)

Ahmad, Ayashaa; Kaushik, Smita; Ramamurthy, V. V.; Ramani, R.; Sharma, K. K.; Vidyarthi, Ambarish Sharan

doi:10.1016/j.asd.2012.04.001

Cited by 30 publications

(16 citation statements)

References 25 publications

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“…Many data confirm the different shapes and sizes of the mechanosensilla (trichoid, chaetic, and other specific shapes) and their distribution pattern over the labium and an interspecific variability of these sensilla on the rostrum was even found in the hematophagous species of Triatoma (Catalá 1996;Rosa et al 1999). In hemipteran taxa, such studies refer to the labial sensilla in Pentatomidae (Parveen et al 2015), Pyrrhocoridae (Pyrrhocoris sibiricus) (Wang and Dai 2017), in Peiratinae (Brożek and Chłond 2010), in many nepomorphan species (Brożek 2013), in Coccoidea (Tachardiidae) (Ahmad et al 2012), and in Fulgoromorpha (Brożek and Bourgoin 2013). Depending on their taxonomic position, the pattern distribution of the mechanosensilla was quite different.…”

Section: Mechanosensilla Of the Last Segmentmentioning

confidence: 61%

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

2019

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The study presents new data on the morphology and distribution of the labial tip sensilla of six species of two nabid subfamilies-Protosteminae and Nabinae (Heteroptera: Cimicomorpha), which were obtained using a scanning electron microscope. In both taxa, there are five morphologically distinct types of sensilla on the tip of the labium: peg sensilla with a terminal pore, nonporous peg sensilla, elongated placoid sensilla with wall pores (multiporous), and trichoid sensilla. In addition, oval plate sensilla with a terminal pore (Tp-opls) were observed in the genus Himacerus. Campaniform sensilla and nonporous chaetic sensilla were observed on the surface of the last segment of the labium in all of the studied species. Over a dozen trichoid sensilla were scattered on the last segment of the labium only in the genus Prostemma. Based on their external structure, it is likely that these sensilla are chemosensitive and mechanosensitive. The oval plate sensilla with a Tp-opls (gustatory) in Himacerus (Nabinae) represent a morphological novelty that probably evolved independently of other nabids.

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Section: Mechanosensilla Of the Last Segmentmentioning

confidence: 61%

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

2019

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“…In nature, animal mouthparts show diverse adaptations to ecological niches and diets 26 27 28 . Host shifts have provided several scenarios where the olfactory apparatus connected to mouthparts of blood-feeding mosquitoes has adapted to host animals 2 10 .…”

Section: Discussionmentioning

confidence: 99%

A novel olfactory pathway is essential for fast and efficient blood-feeding in mosquitoes

Jung

Baeck

Perumalsamy

et al. 2015

Sci Rep

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In mosquitoes, precise and efficient finding of a host animal is crucial for survival. One of the poorly understood aspects of mosquito blood-feeding behavior is how these insects target an optimal site in order to penetrate the skin and blood vessels without alerting the host animal. Here we provide new findings that a piercing structure of the mouthpart of the mosquitoes, the stylet, is an essential apparatus for the stage in blood feeding. Indeed, the stylet possesses a number of sensory hairs located at the tip of the stylet. These hairs house olfactory receptor neurons that express two conventional olfactory receptors of Aedes aegypti (AaOrs), AaOr8 and AaOr49, together with the odorant co-receptor (AaOrco). In vivo calcium imaging using transfected cell lines demonstrated that AaOr8 and AaOr49 were activated by volatile compounds present in blood. Inhibition of gene expression of these AaOrs delayed blood feeding behaviors of the mosquito. Taken together, we identified olfactory receptor neurons in the stylet involved in mosquito blood feeding behaviors, which in turn indicates that olfactory perception in the stylet is necessary and sufficient for mosquitoes to find host blood in order to rapidly acquire blood meals from a host animal.

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“…This predicted feeding behavior might explain why the SG and gut of E. onukii contain similar digestive proteases. On the other hand, the sheath forming hemipterans generally suck sap from vascular tissues (phloem and xylem) [14,43]. Hence, the nutritional components of sap ingested from vascular tissues are signi cantly different from the juices of the broken mesophyll and parenchymal cells in non-vascular tissues.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic and proteomic analysis of putative digestive proteases in the salivary gland and gut of Empoasca (Matsumurasca) onukii Matsuda

Shao

Song

Wang

et al. 2020

Preprint

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Background: Infestation by tea green leafhoppers, Empoasca (Matsumurasca) onukii , could cause a series of biochemical changes in tea leaves. As a typical cell-rupture feeder, E. onukii secretes proteases while probing with its stylet into the tender shoots of tea plants ( Camellia sinensis ). This study identified and analyzed proteases specifically expressed in the salivary gland (SG) and gut of E. onukii through enzymatic activity assays, complemented with an integrated analysis of transcriptome and proteome data.Results: In total, 129 contigs representing seven types of putative proteases were identified. Transcript abundance of digestive proteases and enzymatic activity assays showed that cathepsin B-like protease, cathepsin L-like protease, and serine proteases (trypsin- and chymotrypsin-like protease) were highly abundant in the gut while moderately abundant in the SG. The abundance pattern of digestive proteases in the SG and gut of E. onukii differed from that of other hemipterans including Nilaparvata lugens , Laodelphax striatellus , Acyrthosiphum pisum , Halyomorpha halys and Nephotettix cincticeps . Phylogenetic analysis showed that aminopeptidase N-like proteins and serine proteases abundant in the SG or gut of hemipterans were distributed to two distinct clusters.Conclusions: Altogether, this study provide insightful information on the digestive system of E. onukii and observed different patterns of proteases abundant in the SG and gut of E. onukii , in comparison with other five hemipteran species. These results will be beneficial in understanding the interaction between tea plants and E. onukii .

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Mouthparts and stylet penetration of the lac insect Kerria lacca (Kerr) (Hemiptera:Tachardiidae)

Cited by 30 publications

References 25 publications

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

A novel olfactory pathway is essential for fast and efficient blood-feeding in mosquitoes

Transcriptomic and proteomic analysis of putative digestive proteases in the salivary gland and gut of Empoasca (Matsumurasca) onukii Matsuda

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Mouthparts and stylet penetration of the lac insect Kerria lacca (Kerr) (Hemiptera:Tachardiidae)

Cited by 30 publications

References 25 publications

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

Morphological study of the labial sensilla in Nabidae (Hemiptera: Heteroptera: Cimicomorpha)

A novel olfactory pathway is essential for fast and efficient blood-feeding in mosquitoes

Transcriptomic and proteomic analysis of putative digestive proteases in the salivary gland and gut of&nbsp;Empoasca (Matsumurasca)&nbsp;onukii&nbsp;Matsuda

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Transcriptomic and proteomic analysis of putative digestive proteases in the salivary gland and gut of Empoasca (Matsumurasca) onukii Matsuda