Results 21 to 30 of about 1,376 (215)

Branchial localization of acid (A-type) and base (B-type) excreting ionocytes in Amazonian stenohaline freshwater Potamotrygon ray. [PDF]

J Fish Biol
Abstract The branchial epithelium of Potamotrygon—a member of the only strictly freshwater elasmobranch family Potamotrygonidae—was observed via immunohistochemistry, and two distinct forms of ionocytes were identified. The acid (A‐type) and base (B‐type) secreting cells with respective basolateral–apical localizations of Na+/K+‐ATPase–Na+/H+ exchanger
Rossi MW, Wood CM, Val AL, Wilson JM.
europepmc   +2 more sources

Protocol for Increasing Carotenoid Levels in the Roots of Citrus Plants

Bio-Protocol, 2016
Carotenoids in plants play several key functions such as acting as light-harvesters, antioxidants (Lado et al., 2016) or being precursors of strigolactones, abscisic acid, volatiles and other signaling compounds (Arbona et al., 2013).
Matías Manzi, Marta Pitarch-Bielsa, Vicent Arbona, Aurelio Gómez-Cadenas   +3 more
doaj   +1 more source

Increased Gibberellins and Light Levels Promotes Cell Wall Thickness and Enhance Lignin Deposition in Xylem Fibers

Frontiers in Plant Science, 2018
Light intensity and hormones (gibberellins; GAs) alter plant growth and development. A fine regulation triggered by light and GAs induces changes in stem cell walls (CW).
Renan Falcioni, Renan Falcioni, Thaise Moriwaki, Dyoni Matias de Oliveira, Giovana Castelani Andreotti, Luiz Antônio de Souza, Wanderley Dantas dos Santos, Carlos Moacir Bonato, Werner Camargos Antunes, Werner Camargos Antunes   +9 more
doaj   +1 more source

Embebição de sementes de Alcantarea imperialis (Carrière) Harms em tratamentos pré-germinativos de temperatura sob duas condições de luminosidade

Vértices, 2023
O objetivo deste estudo foi investigar a ação da luz e de tratamentos térmicos pré-germinativos na embebição de sementes de Alcantarea imperialis. As sementes foram dispostas em unidades experimentais de 25 sementes sem desinfestação prévia e submetidas ...
Gustavo Viana de Freitas, Regina Braga de Moura   +1 more
doaj   +1 more source

Thallus hydrophobicity: A low-cost method for understanding lichen ecophysiological responses to environmental changes. [PDF]

Appl Plant Sci
Abstract Premise Methods to evaluate lichen thalli hydrophobicity have previously been described, but only recently has hydrophobicity been shown to be an important functional trait related to water regulation dynamics that could be used to predict future climate change effects. We describe a novel protocol to measure lichen thallus hydrophobicity that
Koch NM, Díaz Dominguez R, Fávaro A, Stanton D.   +3 more
europepmc   +2 more sources

Low Genetic Diversity and Complex Population Structure in Black Piranha (Serrasalmus rhombeus), a Key Amazonian Predator. [PDF]

Ecol Evol
Using a Genotyping‐by‐Sequencing approach across tributaries in the central Amazonia, we found that the black piranha (Serrasalmus rhombeus) exhibits low genetic diversity, pronounced inbreeding, and significant population structure, likely shaped by historical events rather than contemporary factors.
Thomas A, Sylvain FÉ, Normandeau E, Leroux N, Holland A, Val AL, Derome N.   +6 more
europepmc   +2 more sources

Lead tolerance of water hyacinth (Eichhornia crassipes Mart. - Pontederiaceae) as defined by anatomical and physiological traits

Anais da Academia Brasileira de Ciências, 2014
This study aimed at verifying the lead tolerance of water hyacinth and at looking at consequent anatomical and physiological modifications. Water hyacinth plants were grown on nutrient solutions with five different lead concentrations: 0.00, 0.50, 1.00 ...
FABRICIO J. PEREIRA, EVARISTO M. DE CASTRO, CYNTHIA DE OLIVEIRA, MARINÊS F. PIRES, MARCIO P. PEREIRA, SILVIO J. RAMOS, VALDEMAR FAQUIN   +6 more
doaj   +1 more source

Ecofisiologia no Brasil : principais contribuições e lacunas em Herpetofauna, e um retrato de gênero [PDF]

, 2023
Dissertação (mestrado) — Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia, 2023.Ecofisiologia ou fisiologia ecológica é a área de pesquisa onde parâmetros fisiológicos são utilizados para quantificar as ...
Silva, Anandha de Almeida
core  

THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke

Ciência Florestal, 2014
The knowledge about the germination behavior of a plant species is major important to the adoption of the techniques that aim its spreading. The work analyzed the seed germination process of Dalbergia cearensis Ducke in the presence and absence of light,
Francisco Carlos Barboza Nogueira, Maria Izabel Gallão, Antônio Marcos Esmeraldo Bezerra, Sebastião Medeiros Filho   +3 more
doaj   +1 more source

Ecofisiologia: implicações para a silvicultura e o manejo.

, 2023
O objetivo deste capítulo foi estabelecer as conexões conceituais para entender a ecofisiologia da castanheira e projetar possibilidades sobre a silvicultura e o manejo da espécie em plantios comerciais ou nos castanhais nativos, tanto para a produção de
GONÇALVES, J. F. de C., LIMA, R. M. B. de, COSTA, K. C. P. da   +2 more
core