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Your search keyword '"de Castro, Evaristo Mauro"' showing total 159 results
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159 results on '"de Castro, Evaristo Mauro"'

5. Survival, and anatomical and ecophysiological changes in isolated individuals of Tillandsia recurvata L. (Bromeliaceae) grown under different shading conditions

Author

e Silva, Bianca Aparecida Borges, Chaves, Maria Paula Bandoni, Silverio, Heloisa Fernanda, Ramos, Flavio Nunes, de Oliveira, Jean Paulo Vitor, de Castro, Evaristo Mauro, and Pereira, Fabricio Jose

Subjects
Bromeliaceae -- Physiological aspects -- Environmental aspects, Botanical research, Shade-tolerant plants -- Physiological aspects -- Environmental aspects, Solar radiation -- Physiological aspects, Plant physiological ecology -- Research, Biological sciences
Abstract

Tillandsia recurvata L. may show morphophysiological plasticity in response to radiation availability, since this species is found in different environments. This work aimed to evaluate the anatomical and physiological modifications of T. recurvata isolated individuals under different shading levels and the consequences of these changes on the growth of this species. The individuals were exposed for 60 days to treatments as follows: full sun (unshaded) and shading of 35%, 75%, and 85%. Growth analyses were performed, and the leaf anatomy and water content were assessed. All plants submitted to full sun or 35% shading died, whereas those under 75% and 85% shading survived. The water content in leaves and rhizomes was higher under 85% shading, and this treatment increased the leaf area and the number of leaves in T. recurvata. Leaf dry mass, leaf elongation rate, biomass allocation to rhizomes, and net assimilation rate were higher under 85% shading. The leaves had a thicker hypodermis, lower proportions of both epidermis and vascular bundles, and a higher proportion of chlorophyll parenchyma under 85% shading. Tillandsia recurvata individuals behave as sciophytic, while the formation of clusters may change microclimate conditions; the behavior of clumped plants must be further investigated. Key words: epiphytic bromeliads, sciophytes, biomass allometry, chlorophyll parenchyma, water content, Introduction Radiation exerts a strong effect on plant growth and development. This is because some of the most important processes of plant survival depend on light, particularly photosynthesis and growth [...]

Published
2023
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12. Anatomia comparada de Clethra scabra Pers. (Clethraceae) em diferentes altitudes na Serra da Mantiqueira, Minas Gerais, Brasil/Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil

Author

Santos, Maria Luiza, de Oliveira Ribeiro, Alessandra, de Castro, Evaristo Mauro, Miranda, Kaline Fernandes, Lira, Marines Ferreira Pires, Pereira, Márcio Paulo, Ferreira, Cassiana Alves, and Mori, Fabio Akira

Published
2021
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13. From leaves to the whole tree: Mistletoe effects on the productivity, water relations, and demography of a Neotropical savanna tree

Author

Silva, Mateus Cardoso, primary, Teodoro, Grazielle Sales, additional, Junior, José Magno das Chagas, additional, Bastos, Sara Souza, additional, Barbosa, Joao Paulo Rodrigues Alves Delfino, additional, de Castro, Evaristo Mauro, additional, Scalon, Marina Corrêa, additional, and van den Berg, Eduardo, additional

Published
2023
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15. From leaves to the whole tree: Mistletoe effects on the productivity, water relations, and demography of a Neotropical savanna tree.

Author

Silva, Mateus Cardoso, Teodoro, Grazielle Sales, Junior, José Magno das Chagas, Bastos, Sara Souza, Barbosa, Joao Paulo Rodrigues Alves Delfino, de Castro, Evaristo Mauro, Scalon, Marina Corrêa, and van den Berg, Eduardo

Subjects
MISTLETOES, SAVANNAS, LEAF physiology, LEAF anatomy, CERRADOS, DEAD trees
Abstract

Trees' responses to mistletoes occur at multiple organization levels (e.g., leaf, individual, population), yet integrating these multi‐scale responses is still challenging. Here, we compared the traits of infected versus uninfected trees over multiple scales, from leaf anatomy and physiology to canopy allometries and individual growth rate and survivorship. We tested the hypotheses that mistletoes lead in the host (1) the production of leaves with a conservative resource‐use strategy, (2) more mechanically stable canopies and (3) reductions in growth and survival probability in the trees they infect. We addressed these hypotheses in the widespread savanna tree Vochysia thyrsoidea and xylem‐tapping mistletoe Psittacanthus robustus in the Brazilian Cerrado, a global biodiversity hotspot. We found that (1) mistletoe infection did not affect key traits associated with resource conservativeness, such as leaf mass per area (LMA) and carbon assimilation rates (A). Likewise, (2) hosts did not increase the mechanical safety of their trunks in response to mistletoe infection since infected and uninfected trees had a similar allometric scaling between height and crown volume against stem diameter. (3) At the population level, both the relative growth rate and survival probability decreased as the number of parasites increased. However, zero growth and a 50% chance of mortality were estimated to occur in a minority of heavily infected trees (>7 and 14 parasites, respectively). Our results challenge the idea that mistletoes have a ubiquitous negative impact on their hosts. We highlight, therefore, the need for clarifying the mechanisms that allow trees to maintain their functioning even in the face of mistletoe parasitism. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride/Caracteristicas ecofisiologicas, anatomicas e ultraestruturais de Vitex polygama Cham. (Verbenaceae) submetida a diferentes concentracoes de fluor

Author

Rossi, Zelia Terezinha Teixeira, de Castro, Evaristo Mauro, Pereira, Giuslan Carvalho, Barbosa, Joao Paulo Rodrigues Alves Delfino, Carvalho, Graziele Wolff de Almeida, Rossi, Marco Aurelio de Lima Silva, and Pereira, Fabricio Jose

Published
2016
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36. Change in leaf anatomy, physiology, and essential oil of Varronia curassavica Jacq. accessions under two light conditions.

Author

Arrigoni-Blank, Maria de Fátima, Santos Silva, Jefferson Henrique, Bomfim Gois, Itamara, de Castro, Evaristo Mauro, Fitzgerald Blank, Arie, de Castro Nizio, Daniela Aparecida, de Lima Nogueira, Paulo Cesar, and Alves Menezes-Sá, Thays Saynara

Subjects
LEAF anatomy, PHYSIOLOGY, ESSENTIAL oils, LEAF development, LEAF area, PLANT anatomy, CHLOROPHYLL, LEAF physiology
Abstract

Copyright of Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas is the property of Universidad de Santiago de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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