Ultrastructure of the salivary glands of the stink bug predator Podisus distinctus

dc.creatorMartínez, Luis C.
dc.creatorZanuncio, José C.
dc.creatorMorais, Wagner C. C.
dc.creatorPlata- Rueda, Angelica
dc.creatorCedeño- Loja, Pedro E.
dc.creatorSerrão, José E.
dc.date2019-01-28T13:42:47Z
dc.date2019-01-28T13:42:47Z
dc.date2015-12
dc.date.accessioned2023-09-27T20:44:18Z
dc.date.available2023-09-27T20:44:18Z
dc.identifier1435-8115
dc.identifierhttp://dx.doi.org/10.1017/S1431927615015469
dc.identifierhttp://www.locus.ufv.br/handle/123456789/23209
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8946745
dc.descriptionPodisus distinctus (Hemiptera: Pentatomidae) is a zoophytophagous insect with significant potential for use as a biological control agent in agriculture and forestry because their nymphs and adults actively prey on diverse insect species. The saliva of this insect possesses active substances that cause paralysis and death of the prey. As the first step in identifying compounds of P. distinctus saliva, this study describes the ultrastructure of the salivary glands of this predator. The salivary system of P. distinctus possesses a pair of main salivary glands with a short anterior lobe, a long posterior lobe, and a pair of tubular accessory glands. The main salivary gland of P. distinctus has no associated muscles, suggesting that the saliva-release mechanism occurs with the help of certain thorax muscles. The main salivary gland epithelium has a single layer of cells (varying from cubical to columnar) with cytoplasm rich in rough endoplasmic reticulum, spherical granules of different sizes, a nucleus with a predominance of decondensed chromatin, and nucleolus. The apical cell region has a few short microvilli and the basal region has plasma membrane infoldings. The epithelium of the accessory salivary glands possesses a single-layered epithelium of cubic cells delimiting a narrow lumen. The apical cell region has a high density of microvilli and pleomorphic mitochondria, whereas the central cell region is rich in rough endoplasmic reticulum with a well-developed nucleus and decondensed chromatin. The basal cell region is characterized by the presence of several basal plasma membrane infoldings associated with mitochondria and numerous openings to the hemocoel forming large channels. The ultrastructural characteristics suggest that the main salivary glands and accessory salivary glands play a vital role in protein synthesis for saliva production and that the accessory glands are involved in transport of materials of the hemolymph.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherMicroscopy and Microanalysis
dc.relationVolume 21, Issue 6, Pages 1514- 1522, December 2015
dc.rightsOpen Access
dc.subjectSaliva
dc.subjectExtra- oral digestion
dc.subjectSalivary gland
dc.subjectSecretory cells
dc.subjectZoophytophagy
dc.titleUltrastructure of the salivary glands of the stink bug predator Podisus distinctus
dc.typeArtigo


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