C-Methyl-flavonoids from the leaf waxes of some Myrtaceae

Wollenweber, Eckhard; Wehde, Rüdiger; Dörr, Marion; Lang, Günter; Stevens, Jan F.

doi:10.1016/s0031-9422(00)00348-4

Cited by 76 publications

(54 citation statements)

References 18 publications

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“…Developmental studies should be conducted on M. rufa in order to confirm this double pattern. Volatile oils produced by secretory cavities in Myrtaceae have been identified as flavonoids (Wollenweber et al 2000) and terpenoids (Judd et al 1999, Lee 1998, Tanaka et al 1996. Moreover, the occurrence of three types of secretory colleters (petaloid, conic and euryform) has been reported in different tribes of Myrtaceae, including Myrteae (Da Silva et al 2012).…”

Section: Resultsmentioning

confidence: 99%

Leaf micromorphology and anatomy of Myrceugenia rufa (Myrtaceae). An endemic coastal shrub of north-central Chile

Retamales

Cabello²,

Serra

et al. 2015

Gayana Bot.

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Species of fleshy-fruited Myrtaceae are generally associated with humid environments and their vegetative anatomy is mainly mesophytic. Myrceugenia rufa is an endemic and rare species from arid zones of the coast of central Chile and there are no anatomical studies regarding its leaf anatomy and environmental adaptations. Here we describe the leaf micromorphology and anatomy of the species using standard protocols for light and scanning electron microscopy. The leaf anatomy of M. rufa matches that of other Myrtaceae, such as presence of druses, schizogenous secretory ducts and internal phloem. Leaves of M. rufa exhibit a double epidermis, thick cuticle, abundant unicellular hairs, large substomatal chambers covered by trichomes and a dense palisade parenchyma. Leaf characters of M. rufa confirm an anatomical adaptation to xerophytic environments. Keywords:Hairs, leaf anatomy, Myrceugenia rufa, Myrtaceae, SEM, xerophytic characters. RESUMENLas especies con frutos carnosos de Myrtaceae están generalmente asociadas a ambientes húmedos y su anatomía vegetativa es principalmente mesofítica. Myrceugenia rufa es una especie rara y endémica de lugares secos de la costa de Chile central y no hay estudios anatómicos de sus hojas en términos de adaptaciones ambientales. En este artículo describimos la micromorfología y anatomía foliar de la especie usando protocolos estándar para microscopia óptica y electrónica de barrido. La anatomía foliar de M. rufa es similar a otras especies de Myrtaceae, en lo que respecta a presencia de drusas, canales secretores esquizógenos y floema interno. Las hojas de M. rufa tienen una epidermis doble, cutícula gruesa, pelos unicelulares abundantes, cavidades subestomáticas amplias y cubiertas por tricomas, y un denso parénquima en empalizada. Los caracteres foliares de la especie confirman una afinidad morfoanatómica a ambientes xerofíticos.

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Section: Resultsmentioning

confidence: 99%

Leaf micromorphology and anatomy of Myrceugenia rufa (Myrtaceae). An endemic coastal shrub of north-central Chile

Retamales

Cabello²,

Serra

et al. 2015

Gayana Bot.

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“…Other compounds are flavonoids (Wollenweber et al 2000), tannins (Tanaka et al 1996) and triterpenoids (Lee 1998;Judd et al 1999). Triterpenoids are widely present in many families of plants and are produced in different parts of the leaves, not only in secretory cavities (Xiao et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Foliar micromorphology and anatomy of Ugni molinae Turcz. (Myrtaceae), with particular reference to schizogenous secretory cavities

Retamales

Scherson

Scharaschkin

2014

Rev. Chil. de Hist. Nat.

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Background: Ugni molinae Turcz. is one of the most studied species of South American Myrtaceae due to its edible fruits and foliar medicinal compounds. However, there is no anatomical study of the leaves or secretory cavities. This paper seeks to describe the leaf micromorphology and anatomy of the species using standard protocols for light and scanning electron microscopy. Secretory cavities were anatomically characterized in young and mature leaves. Histochemical staining of the cavities was performed. Results: The leaves of U. molinae are hypostomatic, have a wavy surface and possess scattered hairs. Leaf anatomical features include dorsiventral mesophyll, two to three layers of palisade parenchyma with abundant chloroplasts, calcium oxalate crystals and internal phloem in vascular bundles. Schizogenous secretory cavities are present on the abaxial surface and are mainly located on the margins of the leaves. Histochemical tests of these cavities suggest the presence of lipophilic substances.

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“…It can be concluded that the methanol extracts of C. viminalis bark were highly effective against the growth of F. culmorum, and M. grandiflora leaves were effective against A. tenuissima. Many researchers have shown the biological activity of extracts from C. viminalis, and several groups of chemical compounds were identified in the extracts (Wollenweber et al 2000;Parekh et al 2005;Delahaye et al 2009;Islam et al 2010;Salem et al 2013). Different parts of M. grandiflora have different biological compounds with potential antifungal activity against A. alternata, Helminthosporium spp., Nigrospora spp., F. oxysporum, F. culmorum, and Rhizocotonia solani (El-Feraly and Chan 1978;El-Feraly 1984;Luo et al 2001;Ahmed and Abdelgaleil 2005).…”

Section: Antifungal Activities Of Different Extractsmentioning

confidence: 99%

Comparative Evaluation of Some Woody Tree Methanolic Extracts and Paraloid B-72 against Phytopathogenic Mold Fungi Alternaria tenuissima and Fusarium culmorum

Mansour¹,

Abdel-Megeed²,

Nasser³

et al. 2015

BioResources

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Natural compounds from certain timber trees are highly valued and recommended to protect wood and wood products against mold fungi. This study highlighted the use of some natural extracts and Paraloid B-72 against the growth of two mold fungi, namely Alternaria tenuissima and Fusarium culmorum. From the in vitro experiment, the methanol extracts of Callistemon viminalis bark were effective against the growth of F. culmorum, as were Magnolia grandiflora leaves against A. tenuissima. Environmental scanning electron microscopy (ESEM) and electron dispersive X-ray spectroscopy (EDX) analysis of treated Acacia saligna wood with the two fungi and Paraloid B-72 demonstrated the clear hyphal growth of F. culmorum and A. tenuissima and changes in elemental chemical composition. After three months, no fungal growth on the wood surface treated with the methanol extract of M. pomifera bark was found. After three months of treating wood with Paraloid B-72 at 5% and 10%, the mold growth was visible. Almost all of the wood treated with methanol extracts showed growth of the A. tenuissima hypha, as well as some contamination by other microorganisms, except for the wood treated with the methanol extract of M. pomifera bark.

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C-Methyl-flavonoids from the leaf waxes of some Myrtaceae

Cited by 76 publications

References 18 publications

Leaf micromorphology and anatomy of Myrceugenia rufa (Myrtaceae). An endemic coastal shrub of north-central Chile

Leaf micromorphology and anatomy of Myrceugenia rufa (Myrtaceae). An endemic coastal shrub of north-central Chile

Foliar micromorphology and anatomy of Ugni molinae Turcz. (Myrtaceae), with particular reference to schizogenous secretory cavities

Comparative Evaluation of Some Woody Tree Methanolic Extracts and Paraloid B-72 against Phytopathogenic Mold Fungi Alternaria tenuissima and Fusarium culmorum

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