Dendrologia, anatomia do lenho e "status" de conservação das espécies lenhosas dos gêneros Cinchona, Croton e Uncaria no estado do Acre, Brasil.

Pollito, Percy Amilcar Zevallos

doi:10.11606/t.11.2004.tde-19072004-171748

Cited by 4 publications

(5 citation statements)

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“…The qualitative vessels features corroborate Pollito (2004) for the presence of simple perforation plates and for the type of pits. The vessel diameter was related positively with temperature (table 3), indicating that higher temperatures, such as occur at CES, are associated with larger vessel sizes.…”

Section: Discussionsupporting

confidence: 68%

Water deficit affects wood vessels of Croton floribundus Spreng. in different vegetation types, São Paulo State, Brazil

Longui

Romeiro

Testoni

et al. 2012

Hoehnea

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-(Water defi cit affects wood vessels of Croton fl oribundus Spreng. in different vegetation types, São Paulo State, Brazil). In this paper we showed that water defi cit affects the wood vessels of Croton fl oribundus in fi ve areas with different vegetation types: Rain Forest, Semi-deciduous Forest and Woody Savanna. We concluded that variations in the vessels are due especially to water defi cit and the number of months with water defi cit. Larger diameter vessels occurred in areas with higher water defi cit, which may represent a strategy to optimize the water transport in favorable periods. Vessels with smaller diameters occur in areas with lower defi cit, which may be related to lower minimum temperatures and frost occurrence, which like drought can cause vessel embolism. In Caetetus Ecological Station, a Semi-deciduous Forest (area of highest water defi cit), we observed investments in effi ciency and safety, with the occurrence of larger diameter vessels associated with one of the lowest vulnerability indexes and highest proportions of multiple vessels of four or more elements. Key words: Ecological anatomy, mesomorphy, vulnerability, water availability RESUMO -(Défi cit hídrico interfere nos vasos do lenho de Croton fl oribundus Spreng. em diferentes tipos de vegetação, SP, Brasil). O défi cit hídrico infl uenciou na formação dos vasos da madeira de Croton fl oribundus ocorrentes em cinco áreas com as seguintes vegetações: Floresta Ombrófi la, Floresta Estacional Semidecidual e Cerradão. As variações dos vasos devem-se especialmente ao défi cit hídrico e número de meses com défi cit hídrico. Vasos de maior diâmetro ocorreram em áreas com maior défi cit hídrico, o que pode indicar uma estratégia para otimizar o transporte de água em épocas favoráveis. Vasos com menores diâmetros ocorreram em áreas com menor défi cit hídrico, possivelmente infl uenciados pelas menores temperaturas mínimas e a ocorrência de geadas, que semelhante a seca, causa a embolia dos vasos. Na Estação Ecológica de Caetetus, Floresta Estacional Semidecidual (área com maior défi cit de água) observaram-se investimentos em efi ciência e segurança, com a ocorrência de vasos de maior diâmetro associados a um dos menores índices de vulnerabilidade e maior proporção de vasos múltiplos de quatro ou mais elementos. Palavras-chave: Anatomia ecológica, disponibilidade hídrica, mesomorfi a, vulnerabilidade

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Section: Discussionsupporting

confidence: 68%

Water deficit affects wood vessels of Croton floribundus Spreng. in different vegetation types, São Paulo State, Brazil

Longui

Romeiro

Testoni

et al. 2012

Hoehnea

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“…Molecular phylogenetic studies have helped circumscribe the genus and evaluate the monophyly and relationships of previously proposed taxonomic sections (Berry et al, 2005a, b;Berry, 2009, 2010;Riina et al, 2009Riina et al, , 2010van Ee et al, 2006van Ee et al, , 2008van Ee et al, , 2011Caruzo et al, 2011). Wood anatomical studies in Croton have largely been restricted to descriptive work (Loureiro, 1968;Hayden and Hayden, 1994;Luchi, 2004), new species descriptions (Berry et al, 2005a for Brasiliocroton;Riina et al, 2010) or detailed treatments of groups of species (Pollito, 2004;Mennega, 2005), as well as studies of laticifers in the wood of several species (Rudall, 1987(Rudall, , 1989(Rudall, , 1994Wiedenhoeft et al, 2009). Wiedenhoeft (2008) was the first study to tackle the evolution of wood anatomy in Croton in an explicitly phylogenetic context, using parsimony-based phylogenetic comparative methods.…”

Section: Introductionmentioning

confidence: 99%

Force of habit: shrubs, trees and contingent evolution of wood anatomical diversity usingCroton(Euphorbiaceae) as a model system

Arévalo

Riina

et al. 2017

Ann Bot

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Plant functional traits, individually or in suites, are responses to multiple and often confounding contexts in evolution. By establishing an explicit contingent evolutionary framework, the interplay between habit, habitat and wood anatomical diversity was dissected in the genus Croton . Both habit and habitat influence the evolution of wood anatomical characters, and conversely, the wood anatomy of lineages can affect shifts in plant habit and habitat. This study hypothesizes novel putatively functional trait associations in woody plant structure that could be further tested in a variety of other taxa.

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“…é conhecida no Brasil como unha-de-gato pela presença de espinhos semi curvados e pontiagudos de consistência lenhosa que são muito semelhantes às garras dos felinos, a presença desses espinhos facilita com que ela se apoie em cascas e ramos de árvores fazendo com que ela consiga subir em direção a luz, são plantas trepadeiras perenes que se destacam devido as características de suas folhas, das cores de suas flores e o formato dos espinhos. 3Com ampla distribuição na América Central e na Amazônia essa planta é encontrada nos estados do Acre, Amazonas, Amapá e Pará sendo conhecida por nomes variados como garabato, espera-aí, entre outros (MIRANDA et al, 2003;OBREGÓN-VILCHES, 1997;POLLITO, 2004).…”

Section: Uncaria Tomentosaunclassified

Determinação De Compostos Fenólicos Totais E Atividade Antioxidante De Extratos Dos Vegetais: Unha De Gato (Uncaria Tomentosa); Indiano Oli-Banum (Boswellia Serrata); Gymnema (Gymnema Sylvestre) E Alcachofra (Cynara Scolymus) / Determination of Total Phenolic Compounds and Antioxidant Activity of Plant Extracts: Cat's Claw (Uncaria Tomentosa); Indian Oli-Banum (Boswellia Serrata); Gymnema (Gymnema Sylvestre) and Artichoke (Cynara Scolymus)

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Dutra

Melo

2020

BJD

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Dendrologia, anatomia do lenho e "status" de conservação das espécies lenhosas dos gêneros Cinchona, Croton e Uncaria no estado do Acre, Brasil.

Cited by 4 publications

References 0 publications

Water deficit affects wood vessels of Croton floribundus Spreng. in different vegetation types, São Paulo State, Brazil

Water deficit affects wood vessels of Croton floribundus Spreng. in different vegetation types, São Paulo State, Brazil

Force of habit: shrubs, trees and contingent evolution of wood anatomical diversity usingCroton(Euphorbiaceae) as a model system

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