Silk formation mechanisms in the larval salivary glands of Apis mellifera (Hymenoptera : Apidae)

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dc.contributor.authorSilva-Zacarin, ECM
dc.contributor.authorDe Moraes, RLMS
dc.contributor.authorTaboga, SR
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:55:37Z
dc.date.available2014-05-20T13:55:37Z
dc.date.issued2003-12-01
dc.description.abstractThe mechanism of silk formation in Apis mellifera salivary glands, during the 5th instar, was studied. Larval salivary glands were dissected and prepared for light and polarized light microscopy, as well as for scanning and transmission electron microscopy. The results showed that silk formation starts at the middle of the 5th instar and finishes at the end of the same instar. This process begins in the distal secretory portion of the gland, going towards the proximal secretory portion; and from the periphery to the center of the gland lumen. The silk proteins are released from the secretory cells as a homogeneous substance that polymerizes in the lumen to form compact birefringent tactoids. Secondly, the water absorption from the lumen secretion, carried out by secretory and duct cells, promotes aggregation of the tactoids that form a spiral-shape filament with a zigzag pattern. This pattern is also the results of the silk compression in the gland lumen and represents a high concentration of macromolecularly well-oriented silk proteins.en
dc.description.affiliationUniv Estadual Paulista, Depto Biol IB, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationIBILCE, Depto Biol, Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Depto Biol IB, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespIBILCE, Depto Biol, Sao Jose do Rio Preto, SP, Brazil
dc.format.extent753-764
dc.identifierhttp://dx.doi.org/10.1007/BF02708436
dc.identifier.citationJournal of Biosciences. Bangalore: Indian Academy Sciences, v. 28, n. 6, p. 753-764, 2003.
dc.identifier.doi10.1007/BF02708436
dc.identifier.issn0250-5991
dc.identifier.lattes1445259468526188
dc.identifier.orcid0000-0002-0970-4288
dc.identifier.urihttp://hdl.handle.net/11449/19910
dc.identifier.wosWOS:000187281000016
dc.language.isoeng
dc.publisherIndian Academy Sciences
dc.relation.ispartofJournal of Biosciences
dc.relation.ispartofjcr1.528
dc.relation.ispartofsjr0,651
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectbeept
dc.subjectelectron microscopypt
dc.subjectlarval salivary glandpt
dc.subjectlight microscopypt
dc.subjectpolarized light microscopypt
dc.subjectsilk glandpt
dc.titleSilk formation mechanisms in the larval salivary glands of Apis mellifera (Hymenoptera : Apidae)en
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderIndian Academy Sciences
unesp.author.lattes1445259468526188
unesp.author.orcid0000-0002-0970-4288[3]
unesp.author.orcid0000-0002-0970-4288[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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