Development, structure and secretion compounds of stipule colleters in Pentas lanceolata (Rubiaceae)

Muravnik, Lyudmila E.; Kostina, O. V.; Шаварда, А. Л.

doi:10.1016/j.sajb.2014.03.007

Cited by 24 publications

(22 citation statements)

References 41 publications

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“…The colleters of S. glandulosa are developed from both protoderm and ground elements and are, therefore, emergences, as is the case in other Rubiaceae species (Hallé 1967;Dave et al 1988;Thomas 1991;Coelho et al 2013;Muravnik et al 2014). Morphologically, a change in color from greenish (due to the presence of chlorophyll) to ochre-brown was observed during the development of colleters in this study.…”

Section: Development Of Colleterssupporting

confidence: 76%

“…We observed packages of raphides in the axes of the colleters in certain species. The presence of crystals in cells of the central core of colleters has been documented for several species of Rubiaceae (Lersten 1974a(Lersten , 1974bDave et al 1988;Miguel et al 2009;Muravnik et al 2014;Vitarelli and Santos 2009). Species with crystaliferous idioblasts in colleters also had idioblasts in other organs (Gonzalez and Tarragó 2009;Machado Martins 2012).…”

Section: Morphology and Anatomy Of Colletersmentioning

confidence: 94%

“…Colleters are present in more than 60 angiosperm families, and the number is increasing with research progress (Thomas and Dave 1989;Muravnik et al 2014). They have received special attention in Rubiaceae in recent years, because their morphology, abundance, and distribution are of taxonomic relevance (Robbrecht 1988;Thomas 1991;De Block 2003;Taylor 2003).…”

Section: Introductionmentioning

confidence: 99%

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Colleters in American Spermacoceae Genera (Rubiaceae): Morphoanatomical and Evolutionary Aspects

Judkevich

Salas

González

2017

International Journal of Plant Sciences

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Editor: Maria von BalthazarPremise of research. The primary goal of this study is to describe the colleters on vegetative and reproductive organs in the Spermacoceae tribe and to characterize their morphoanatomy, their distribution, and some functional and evolutionary aspects.Methodology. The anatomy, development, and vascularization of colleters from 28 species were studied using standard light and scanning electron microscopy based on fresh and fixed material. Our results are interpreted within the framework of recent molecular phylogenies.Pivotal results. Standard-type colleters were found on stipules, calyx, and bracteoles, and they were also found on underground buds in five species of Galianthe. Six species have green colleters, and two have vascularized colleters. We discuss previously unknown functional aspects based on the Staelia glandulosa colleters and propose a new term: long-lived colleters.Conclusions. This article describes the anatomy of colleters in the Spermacoceae tribe of the family Rubiaceae in detail. The presence of underground colleters in Galianthe grandifolia is confirmed and extended to other species of the genus. Vascularization is recorded for the first time in colleters of Mitracarpus and Staelia. This study provides data about the type, distribution, and anatomy of colleters in Spermacoceae, contributing important information for ongoing phylogenetic studies in the tribe. The proposal of a new functional type of colleter based on anatomical, morphological, and ecological aspects, named long-lived colleter, reflects the need to perform further comprehensive studies based on multidisciplinary approaches.

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Section: Development Of Colleterssupporting

confidence: 76%

Section: Morphology and Anatomy Of Colletersmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Colleters in American Spermacoceae Genera (Rubiaceae): Morphoanatomical and Evolutionary Aspects

Judkevich

Salas

González

2017

International Journal of Plant Sciences

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“…In coffee tree flowers (Mayer et al 2013), colleter exudate covers the petals, protecting the flowers against dehydration and controlling their opening. The proteins found in the colleter secretion of some of the studied species may represent a character shared by families of the Gentianales, as they also occur in Apocynaceae (Thomas andDave 1989a, 1989b), Rubiaceae (Thomas and Dave 1990;Klein et al 2004;Miguel et al 2006;Coelho et al 2013;Muravnik et al 2014), and Gentianaceae (Dalvi et al 2014).…”

Section: Discussionmentioning

confidence: 88%

“…Based on their external morphology and anatomical structure, the following types of colleters have been described in this family: standard, reduced standard, dendroid, brush-like, winged, and filiform (Lersten 1974a(Lersten , 1974bPuff et al 1984;Thomas 1991;Klein et al 2004;Miguel et al 2006Miguel et al , 2009Miguel et al , 2010Barreiro and Machado 2007;Vitarelli and Santos 2009;Coelho et al 2013;Mayer et al 2013;Muravnik et al 2014). The standard type is considered the most common and is characterized by a central parenchymatous axis ensheathed by a palisade secretory epidermis (Lersten 1974a(Lersten , 1974b.…”

Section: Introductionmentioning

confidence: 99%

Colleters in 10 species belonging to three tribes of Rubiaceae: morphoanatomical diversity and potential as useful characters for taxonomy

Lopes-Mattos

Otuki

Azevedo

et al. 2015

Botany

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Colleters are common secretory structures in Rubiaceae. In this study, we describe colleter morphoanatomy and histochemistry in 10 species belonging to Chiococceae, Coussareae, and Psychotrieae tribes of Rubiaceae. Colleter morphoanatomy was analyzed by light and scanning electron microscopy. Microscopy analysis revealed that colleters were present on the stipule adaxial surface in all species. In the case of Palicourea marcgravii A.St.-Hil. and Chiococca alba Hitchc., colleters were also found on leaf primordia and at the stipule apex, respectively. Colleters were classified into three types: standard, bifurcated standard, and reduced standard. Further analysis showed that colleter epidermal cells are thin-walled and possess a thin cuticle, conspicuous nuclei located at the equatorial or basal region, and abundant cytoplasm. Intercellular spaces were found among epidermal cells in Chiococca alba, Coussarea triflora Müll.Arg., Coussarea verticillata Müll.Arg., Psychotria conjungens Müll.Arg., and Psychotria sessilis Vell. Crystalliferous idioblasts containing raphides were observed in the colleter central parenchymatous axis of all species, while crystal sand was found only in Chiococca alba. Histochemical tests revealed that colleter secretion is composed of a mixture of mucilage and protein. We conclude that colleter position, typological variation, presence of vascularization, and type of calcium oxalate crystals represent promising characters for future taxonomic and phylogenetic studies in Rubiaceae. Résumé: Les collétères sont des structures sécrétoires communes chez les Rubiaceae. Dans cette étude, les auteurs décrivent la morpho-anatomie et l'histochimie de collétères de 10 espèces appartenant aux tribus des Chiococceae, Coussareae et Psychotrieae des Rubiaceae. La morpho-anatomie de collétères a été analysée par microscopie optique et microscopie électronique à balayage. L'analyse en microscopie a révélé que les collétères étaient présentes sur la surface adaxiale des stipules de toutes les espèces. Dans le cas de Palicourea marcgravii A.St.-Hil. et Chiococca alba Hitchc., les collétères se trouvaient aussi sur les ébauches foliaires et à l'apex des stipules, respectivement. Les collétères ont été classifiées en trois types : standard, standard bifurqué et standard réduit. Des analyses supplémentaires ont montré que les cellules épidermiques des collétères possèdent une paroi et une cuticule minces, un noyau bien évident localisé dans la région équatoriale ou basale, et un cytoplasme abondant. Des espaces intercellulaires ont été trouvés entre les cellules épidermiques chez Chiococca alba, Coussarea triflora Müll.Arg., Coussarea verticillata Müll.Arg., Psychotria conjungens Müll.Arg. et Psychotria sessilis Vell.Des idioblastes cristallifères contenant des raphides ont été observés dans l'axe parenchymateux central des collétères de toutes les espèces, alors qu'un sable cristallin était trouvé seulement chez Chiococca alba. Des tests histochimiques ont révélé que la sécrétion des collétères est composée d...

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Phytochemistry, synthesis, analytical methods, pharmacological activity, and pharmacokinetics of loganin: A comprehensive review

Zhang

et al. 2022

Phytotherapy Research

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Iridoid glycosides (IGs) are found in many medicinal and edible plants, such as Gardenia jasminoides, Cistanche tubulosa, Eucommia ulmoides, Rehmanniae Radix, Lonicera japonica, and Cornus officinalis. Loganin, an IG, is one of the main active ingredient of Cornus officinalis Sieb. et Zucc., which approved as a medicinal and edible plant in China. Loganin has been widely concerned due to its extensive pharmacological effects, including anti‐diabetic, antiinflammatory, neuroprotective, and anti‐tumor activities, etc. Studies have shown that these underlying mechanisms include anti‐oxidation, antiinflammation and anti‐apoptosis by regulating a variety of signaling pathways, such as STAT3/NF‐κB, JAK/STAT3, TLR4/NF‐κB, PI3K/Akt, MCP‐1/CCR2, and RAGE/Nox4/p65 NF‐κB signaling pathways. In order to better understand the research status of loganin and promote its application in human health, this paper systematically summarized the phytochemistry, analysis methods, synthesis, pharmacological properties and related mechanisms, and pharmacokinetics based on the research in the past decades.

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Development, structure and secretion compounds of stipule colleters in Pentas lanceolata (Rubiaceae)

Cited by 24 publications

References 41 publications

Colleters in American Spermacoceae Genera (Rubiaceae): Morphoanatomical and Evolutionary Aspects

Colleters in American Spermacoceae Genera (Rubiaceae): Morphoanatomical and Evolutionary Aspects

Colleters in 10 species belonging to three tribes of Rubiaceae: morphoanatomical diversity and potential as useful characters for taxonomy

Phytochemistry, synthesis, analytical methods, pharmacological activity, and pharmacokinetics of loganin: A comprehensive review

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