Foliar anatomy of neotropical Salicaceae: potentially useful characters for taxonomy

Thadeo, Marcela; Azevedo, Aristéa Alves; Meira, Renata Maria Strozi Alves

doi:10.1007/s00606-014-1037-5

Cited by 24 publications

(21 citation statements)

References 62 publications

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“…The leaf teeth of six Casearia spp. were described as non‐epithem hydathodes (Thadeo et al ., ). In the present study, we re‐analysed these species and were able to verify that, in the young and/or fully expanded leaves, the marginal teeth possessed colleters and not hydathodes.…”

Section: Discussionmentioning

confidence: 97%

“…However, a senescent colleter can be seen in an image in Thadeo et al . (: fig. C), which was described as a theoid tooth seta.…”

Section: Discussionmentioning

confidence: 98%

“…The theoid teeth of six Casearia spp. were anatomically described as non‐epithem hydathodes (Thadeo et al ., ).…”

Section: Introductionmentioning

confidence: 97%

“…Salicoid teeth are characterized by the presence of a spherical callosity fused to the tooth apex, are non‐deciduous and appear as a non‐opaque dark seta (Hickey & Wolfe, ; Metcalfe & Chalk, ; Judd et al ., ). Several vascular bundles merge and branch towards a salicoid tooth, forming excessive vascularization (Thadeo, Azevedo & Meira, ). Violoid teeth have a medial vein running to the apex, where it expands into an opaque glandular termination, without a deciduous apical seta (Hickey & Wolfe, ).…”

Section: Introductionmentioning

confidence: 99%

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Colleters inCasearia(Salicaceae): a new interpretation for the theoid teeth

et al. 2016

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Salicaceae possess a range of leaf teeth types, many characterized as nectariferous salicoid or violoid teeth. One large genus, Casearia, deviates from this generalization in having theoid teeth. Although taxonomic descriptions of Casearia have included reports of glands at the apex of teeth, there have been no descriptions of their anatomy or functional role. Here, we aim to describe the anatomy of the theoid teeth of 43 Casearia spp. Leaf samples from herbarium specimens were processed for light and scanning electron microscopy. Leaves of C. sylvestris were collected and fixed in the field for histochemical tests, revealing only polysaccharides in secretory epidermal cells and outside of these cells. The glands have precocious development and are composed of a non-vascular central axis covered with a palisade-like secretory epidermis. During senescence, the cells of the palisade-like secretory epidermis and central axis appear to lose their typical form, with some cell walls disintegrating. In the mature leaf, an abscission zone at the base of the gland causes detachment of the gland. The placement, anatomical structure, precocious activity and polysaccharide secretion (in C. sylvestris) allow the recognition of the glands associated with the marginal teeth in Casearia as colleters. Similar studies are needed for other genera in order to clarify how colleters have evolved in Salicaceae and how they are functionally and anatomically related to other teeth types in the family.

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Section: Discussionmentioning

confidence: 97%

“…However, a senescent colleter can be seen in an image in Thadeo et al . (: fig. C), which was described as a theoid tooth seta.…”

Section: Discussionmentioning

confidence: 98%

“…The theoid teeth of six Casearia spp. were anatomically described as non‐epithem hydathodes (Thadeo et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Colleters inCasearia(Salicaceae): a new interpretation for the theoid teeth

et al. 2016

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“…Few studies of the anatomy of the Salicaceae Mirb. family showed the importance of such approach for solving complicated taxonomic problems (Thadeo et al, 2014;Kalouti et al, 2015;Čortan et al, 2017). Thus, petiole anatomy, i.e.…”

Section: Introductionmentioning

confidence: 99%

Using petiole anatomy to identify hybrids between and species of Populus sections Aigeiros and Tacamahaca

2019

Turczaninowia

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The article presents the results of the study of the petiole anatomy peculiarities of the hybrids between Aigeiros and Tacamahaca sections. Petiole anatomic structure was found to be helpful in assigning taxa to a section and to find intersectional hybrids, which is actual for studying populations in natural and anthropogenic hybridization zones. Cross sections made in the upper part of petioles were used for analyzing anatomic traits by light microscopy. All representatives of the Aigeiros section have linear form of the vascular system, consisting of 3-5 rings, with a rounded contour of the petiole adaxial side. In the Tacamahaca section taxa the vascular system is highly arched, and the adaxial side is cordate. The study of the hybrids between species of the same section revealed that such hybrids inherit anatomy features common for the section. We can consider such traits as adaxial side shape and vascular system type to be the most important markers for intersectional hybrids. Truncated or notched shape of the adaxial contour and vascular system type were found to be characteristic features of hybrids, as small notches in their petioles' upper part are common for all hybrids. Most of hybrids have small notches, rather than grooves, in the upper part of their petioles. Most of the intersectional hybrids have transitional shape of vascular system. The anatomy of Populus × sibirica petioles confirmed earlier results that it is a hybrid cultivar, that originated as a result of crossbreeding between Aigeiros and Tacamahaca section species. Использование признаков петиолярной анатомии для идентификации гибридов и видов секцииAigeiros и Tacamahaca рода Populus 3 Западно-Сибирское отделение Института леса им. В.Н. Сукачева СО РАН -филиал Федерального исследовательского центра «Красноярский научный центр СО РАН», ул. Жуковского, 100/1, г. Новосибирск, 630082, Россия Ключевые слова: гибридизация, идентификация, петиолярная анатомия, таксоны, Populus. Аннотация. Представлены результаты изучения петиолярной анатомии видов секций Aigeiros и Tacamahaca и их гибридов. Установлено, что анатомическое строение черешков позволяет диагностировать принадлежность таксона к секции и выявлять межсекционные гибриды; последнее актуально при исследовании зон естественной и антропогенной гибридизации. Листья для работы отбирались со средней части кроны 81 Turczaninowia 22 (3): 080-090 (2019) репродуктивно зрелых деревьев с укороченных побегов. Для анализа использовались поперечные срезы, выполненные в верхней части черешка. Материалы исследовались с помощью методов световой микроскопии. Для всех представителей секции Aigeiros характерна линейная форма проводящей системы из 3-5 округлых колец и округлый контур адаксиальной стороны черешка. У таксонов секции Tacamahaca она высокоаркообразная, а контур адаксиальной стороны сердцевидный. Изучение гибридов между видами одной секции показало, что они полностью наследуют специфику строения характерную для группы. Наиболее важными анатомическими признаками, маркирующими межсекционные гибриды, ...

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Casearia Essential Oil: An Updated Review on the Chemistry and Pharmacological Activities

Carvalho

Moraes

Crotti

et al. 2023

Chemistry & Biodiversity

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Casearia species are found in the America, Africa, Asia, and Australia and present pharmacological activities, besides their traditional uses. Here, we reviewed the chemical composition, content, pharmacological activities, and toxicity of the essential oils (EOs) from Casearia species. The EO physical parameters and leaf botanical characteristics were also described. The bioactivities of the EOs from the leaves and their components include cytotoxicity, anti‐inflammatory, antiulcer, antimicrobial, antidiabetic, antioxidant, antifungal, and antiviral activities. The main components associated with these activities are the α‐zingiberene, (E)‐caryophyllene, germacrene D, bicyclogermacrene, spathulenol, α‐humulene, β‐acoradiene, and δ‐cadinene. Data on the toxicity of these EOs are scarce in the literature. Casearia sylvestris Sw. is the most studied species, presenting more significant pharmacological potential. The chemical variability of EOs components was also investigated for this species. Caseria EOs have relevant pharmacological potential and must be further investigated and exploited.

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Foliar anatomy of neotropical Salicaceae: potentially useful characters for taxonomy

Cited by 24 publications

References 62 publications

Colleters inCasearia(Salicaceae): a new interpretation for the theoid teeth

Colleters inCasearia(Salicaceae): a new interpretation for the theoid teeth

Using petiole anatomy to identify hybrids between and species of Populus sections Aigeiros and Tacamahaca

Casearia Essential Oil: An Updated Review on the Chemistry and Pharmacological Activities

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