دورية أكاديمية
أعرض في EDS

Unraveling the secretion mechanism of the curious nectaries in Gentianaceae.

التفاصيل البيبلوغرافية
العنوان: Unraveling the secretion mechanism of the curious nectaries in Gentianaceae.
المؤلفون: Zanotti-Ávila A; Programa de Pós-Graduação Em Botânica, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-000, Brazil., Fernandes VF; Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, 45662-900, Brazil., Barros KA; Programa de Pós-Graduação Em Botânica, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-000, Brazil., Dalvi VC; Programa de Pós-Graduação Em Biodiversidade E Conservação, Instituto Federal de Educação, Ciência E Tecnologia Goiano, Campus Rio Verde, Rio Verde, Goiás, 75901-970, Brazil., Azevedo AA; Programa de Pós-Graduação Em Botânica, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-000, Brazil., Meira RMSA; Programa de Pós-Graduação Em Botânica, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-000, Brazil. rmeira@ufv.br.
المصدر: Protoplasma [Protoplasma] 2023 Mar; Vol. 260 (2), pp. 637-649. Date of Electronic Publication: 2022 Aug 12.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Springer Country of Publication: Austria NLM ID: 9806853 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1615-6102 (Electronic) Linking ISSN: 0033183X NLM ISO Abbreviation: Protoplasma Subsets: MEDLINE
أسماء مطبوعة: Publication: <1998->: Wien ; New York : Springer
Original Publication: Leipzig : Verlag von Gebrüder Borntraeger, 1927-
مواضيع طبية MeSH: Gentianaceae* , Ants*/metabolism, Animals ; Plant Nectar/metabolism ; Plant Leaves/metabolism ; Flowers/metabolism
مستخلص: Unusual nectaries were anatomically described as being usual traits for Gentianaceae. They are small, avascularized, and formed by 3 to 5 rosette cells with labyrinthine walls around one central cell. Such as nectaries have been reported for stems, petals, and sepals of different species of the family, however, there is no information on the mechanisms involved with the synthesis and release of secretion. Thus, this work aimed to unravel the mechanism of secretion and exudation of nectar for these curious nectaries using Calolisianthus speciosus as a model. Samples were processed according to standard methods for light and electron microscopy. Leaf and sepal nectaries were described, as were those of the apex of petals where ants were observed patrolling a darkened region. The enzymatic method was used for the detection of sugars, proteins, and amino acids in leaf and sepal exudates. The nectaries of petals of C. speciosus are similar to those of its leaves, sepals, and stem, although their activities are asynchronous. Polysaccharides were detected on the labyrinthine walls of rosette cells and protein in the opposite region of the cytoplasm. Labyrinthine walls increase the contact surface between rosette cells and the central cell, allowing for the transfer of secretion. After accumulation, the secretion is released to the subcuticular space of the central cell through disruption of the cuticle. The secretion and exudation of nectar were elucidated and involve distinct organelles.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)
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معلومات مُعتمدة: DEB #306740/2019-2 CNPq
فهرسة مساهمة: Keywords: Calolisianthus speciosus; Electron microscopy; Histochemistry; Ontogeny; Ultrastructure
المشرفين على المادة: 0 (Plant Nectar)
تواريخ الأحداث: Date Created: 20220811 Date Completed: 20230217 Latest Revision: 20230217
رمز التحديث: 20231215
DOI: 10.1007/s00709-022-01804-8
PMID: 35953680
قاعدة البيانات: MEDLINE
الوصف
تدمد:1615-6102
DOI:10.1007/s00709-022-01804-8