The role of the parenchyma sheath and PCD during the development of oil cavities in Pterodon pubescens (Leguminosae-Papilionoideae)

Rodrigues, Tatiane Maria; Santos, Daniela Carvalho dos; Machado, Sílvia Rodrigues

doi:10.1016/j.crvi.2011.04.005

Cited by 29 publications

(19 citation statements)

References 53 publications

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“…The presence of a parenchyma sheath with meristematic potential around the secretory spaces appears to be a common feature among legume species (Rodrigues et al 2011a;b;Rodrigues & Machado 2012). This sheath plays an important role in the maintenance of secretory activity and in the replacement of degenerated cells in the epithelium of secretory spaces (Rodrigues et al 2011a).…”

Section: Discussionmentioning

confidence: 99%

“…This sheath plays an important role in the maintenance of secretory activity and in the replacement of degenerated cells in the epithelium of secretory spaces (Rodrigues et al 2011a). After degeneration, the epithelial cells can be replaced by other cells originating from the parenchyma sheath that surrounds the secretory spaces in legumes (Rodrigues et al 2011a;b;Rodrigues & Machado 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Secretory cavities and canals are common in vegetative (Lersten & Curtis 1986;Turner 1986;Teixeira & Gabrielli 2000;Marcati et al 2001;Paiva & Machado 2007;Rodrigues & Machado 2009;Teixeira & Rocha 2009;Rodrigues et al 2011a;b;Milani et al 2012;Rodrigues & Machado 2012) and reproductive (Paiva et al 2008;Teixeira & Rocha 2009;Leite et al 2014) organs of species of Leguminosae. Th ey produce and accumulate compounds involved with mechanisms of defense against herbivores and pathogens, and therefore are responsible for ecological interactions (Fahn 1979;Langenheim 2003).…”

Section: Introductionmentioning

confidence: 99%

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Secretory spaces in species of the clade Dipterygeae (Leguminosae, Papilionoideae)

et al. 2017

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Dipteryx, Pterodon and Taralea are legume genera known for secreting oils, produced in secretory canals and cavities, with medicinal properties. We analyzed the distribution, morphology and histochemistry of these glands in leaves and stems of Dipteryx alata, Pterodon pubescens and Taralea oppositifolia, three Neotropical species, using standard techniques for anatomy and histochemistry. Secretory spaces, i.e. secretory cavities and canals, exhibited a wide lumen and a single layer of epithelium. Digitiform epithelial cells, forming trabeculae protruding into the lumen, were seen in all three species. Secretory cavities with a rounded or oval lumen and secretory canals with an elongated lumen in longitudinal sections were found only in T. oppositifolia. In D. alata and P. pubescens, only secretory cavities were found. In P. pubescens, secretory cavities occurred in the leaf blade margin. In T. oppositifolia, secretory spaces were much more numerous than in the other two species. Terpenes, total lipids, phenolic compounds, alkaloids and polysaccharides were detected in the secretory spaces of the three species. Th e abundance of secretory spaces, the presence of canals in T. oppositifolia and the position of cavities in P. pubescens are features with potential diagnostic value for their respective genera.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Secretory spaces in species of the clade Dipterygeae (Leguminosae, Papilionoideae)

et al. 2017

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“…Secretory cavities and canals are common in many members of Leguminosae and can occur in vegetative (Lersten and Curtis 1986;Turner 1986;Teixeira et al 2000;Teixeira and Gabrielli 2000;Marcati et al 2001;Paiva and Machado 2007;Rodrigues and Machado 2009;Teixeira and Rocha 2009;Rodrigues et al 2011aRodrigues et al , 2011bMilani et al 2012) or reproductive organs (Paiva et al 2008;Teixeira and Rocha 2009). These structures in legumes have taxonomic (Turner 1986;Lersten and Curtis 1996;Teixeira et al 2000;Gabrielli 2000, 2006), ecological (Langenheim et al 1982;Arrhenius and Langenheim 1983;Langenheim 2003), and economic (Coelho et al 2001;Langenheim 2003;Plowden 2003) aspects.…”

Section: Introductionmentioning

confidence: 99%

“…Rodrigues et al (2011b) noted that secretory cavities occur also in the stem of P. pubescens, where their lumen is initiated by schizogenesis and epithelial cells undergo programmed cell death in their late developmental stages. According to Rodrigues et al (2011a), dead epithelial cells are replaced by new ones originating from the parenchyma sheath, characterizing an open pattern of development. However, information on the structure and function of these glands in different stages of vegetative development as well as in different organs of P. pubescens is lacking.…”

Section: Introductionmentioning

confidence: 99%

Oil Glands in Pterodon pubescens Benth. (Leguminosae-Papilionoideae): Distribution, Structure, and Secretion Mechanisms

Rodrigues

Machado

2012

International Journal of Plant Sciences

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Neither lysigenous nor just oil: Demystifying myrtaceous secretory cavities

Richit,

Díaz,

Dick

et al. 2023

American J of Botany

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PremiseLeaf subepidermal secretory cavities are a notable trait in Myrtaceae. The formation of these secretory structures is still controversial because of the lack of consensus on their ontogeny among authors. The knowledge about the nature of the compounds present in these cavities has grown over the last few years, demonstrating that terpenoid‐rich oils are not their unique content. These two points are the focus of this study, which investigates the ontogeny, structure and the contents of secretory cavities in Neotropical Myrtaceae.MethodsWe used histochemical tests and Raman analysis to verify the basic chemical composition of cavity content of nine species and investigated the ontogeny of glands in one species, comparing aldehyde‐fixed tissues and fresh sections mounted in an inert medium.ResultsWe observed schizogenous development and appearance in secretory cavities and found that tissue processing may induce cell breakdown, which can be misinterpreted as lysigeny. The content of these cavities contains prospective terpenes, resins, carbonyl groups, and flavonoids.ConclusionsOur findings support the hypothesis that technical artifacts may produce a lysigenous impression in oil glands. These tissue distortions must be considered when interpreting the development of this type of secretory structure. Moreover, the basic analyses of chemical constituents show for the first time that the glands of Neotropical Myrtaceae are potential reservoirs of some compounds previously reported as novelties for a few other myrtaceous species, such as flavonoids. As some of them are non‐lipid compounds, the idea that glands are just oil repositories is no longer applicable.This article is protected by copyright. All rights reserved.

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The role of the parenchyma sheath and PCD during the development of oil cavities in Pterodon pubescens (Leguminosae-Papilionoideae)

Cited by 29 publications

References 53 publications

Secretory spaces in species of the clade Dipterygeae (Leguminosae, Papilionoideae)

Secretory spaces in species of the clade Dipterygeae (Leguminosae, Papilionoideae)

Oil Glands in Pterodon pubescens Benth. (Leguminosae-Papilionoideae): Distribution, Structure, and Secretion Mechanisms

Neither lysigenous nor just oil: Demystifying myrtaceous secretory cavities

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