Results 61 to 70 of about 8,910 (184)

Resposta celular ao estresse [PDF]

Revista da Associação Médica Brasileira, 1999
“Das moscas de frutas as doencas autoimunes eao câncer, as proteinas chaperonas sao as molecu-las maravilhosas cativando a imaginacao de pes-quisadores em toda a comunidade cientifica. Mui-tas novas avenidas serao abertas atraves do estudoe do entendimento da resposta celular ao estresse.Estamos apenas comecando a portentosa aventuraque aguarda nosso ...
Meyer, T. N., Silva, A. L. da
openaire   +3 more sources

Seasonal and intracanopy shifts in the fates of absorbed photons in central Amazonian forests: implications for leaf fluorescence and photosynthesis

New Phytologist, Volume 248, Issue 1, Page 76-91, October 2025.
Summary Recent studies have shown a linear relationship between solar‐induced Chl fluorescence (SIF) and gross primary productivity (GPP) at large scales. However, this relationship diverges at finer leaf scales, particularly in tropical forests with complex canopy structures.
Leonardo G. Ziccardi, David Kramer, Nathan Gonçalves, Bruce W. Nelson, Tyeen Taylor, Loren P. Albert, Kleber S. Campos, Neill Prohaska, Natalia Restrepo‐Coupe, Scott R. Saleska, Scott C. Stark   +10 more
wiley   +1 more source

Eficácia do eugenol extraído da planta Eugenia aromática como anestésico para realização de biometrias em adultos de tilápia do Nilo (Oreochromis niloticus) - doi: 10.4025/actascianimsci.v32i4.9973

Acta Scientiarum: Animal Sciences, 2010
Os anestésicos figuram como poderosa ferramenta na aquicultura, atuando na redução do estresse e mortalidade usualmente causados pelo manejo. O objetivo deste trabalho foi avaliar o efeito de diferentes concentrações de eugenol em adultos de tilápia e ...
Antonio Glaydson Lima Moreira, Erivânia Gomes Teixeira, Carlos Riedel Porto Carreiro, Ricardo Lafaiete Moreira   +3 more
doaj   +1 more source

Reactive oxygen species act as signaling molecules to control root hair initiation and tip growth

New Phytologist, Volume 247, Issue 5, Page 2042-2048, September 2025.
Summary Root hairs (RHs) increase the surface area of roots, facilitating nutrient and water uptake and plant anchorage. RHs form from root epidermal cells and elongate by polar tip growth. Reactive oxygen species (ROS) have recently been implicated as important signals that drive RH formation and elongation using both genetic and imaging approaches ...
Megan E. Gerber, Maleana G. White, Gloria K. Muday   +2 more
wiley   +1 more source

The Unstable Relationship Between Drought Status and Leaf Water Content Complicates the Remote Sensing of Tree Drought Stress

Global Change Biology, Volume 31, Issue 4, April 2025.
Remote sensing can monitor plant drought stress across ecosystems but is limited by uncertain links between physiological stress and measurements of water content. We examined how water potential and water content, measured in the field, laboratory, and via airborne imaging, vary over time and space in two oak species.
Indra Boving, Jean Allen, Philip G. Brodrick, K. Dana Chadwick, Anna Trugman, Leander D.L. Anderegg   +5 more
wiley   +1 more source

Successful recovery of native plants post‐invasive removal in forest understories is driven by native community features

Ecological Applications, Volume 35, Issue 2, March 2025.
Abstract Temperate forest understories hold the majority of the plant diversity present in these ecosystems and play an essential role in the recruitment and establishment of native trees. However, the long‐term persistence of diverse and functional forest understories is threatened by the impacts of invasive plants.
Laís Petri, Inés Ibáñez
wiley   +1 more source

Rainfall seasonality shapes belowground root trait dynamics in an Amazonian tropical rainforest: A test of the stress‐dominance hypothesis

Functional Ecology, Volume 39, Issue 3, Page 799-812, March 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stress‐dominance hypothesis (SDH) predicts that trait variation at the community level increases with the availability of limiting resources, driving spatial and temporal patterns in above‐ground plant functional trait expression.
Oscar J. Valverde‐Barrantes, Laynara F. Lugli, Lucia Fuchslueger, Florian Hofhansl, Nathielly Martins, Amanda L. Cordeiro, Karst Schapp, Kelly M. Anderson, Sabrina Garcia, Adriana Grandis, Carol A. Miron, Katrin Fleisher, Marcel R. Hoosbeek, Ian P. Hartley, Erick Oblitas Mendoza, David Lapola, Carlos A. Quesada   +16 more
wiley   +1 more source

Balancing ecotourism and wildlife management through a conservation behavior approach

Conservation Science and Practice, Volume 7, Issue 3, March 2025.
We surveyed ecologists, conservationists, and ecotourism professionals to investigate consequences of ecotourism on animal behavior. We highlight four main behavioral themes and solutions for engendering more sustainable ecotourism that mitigates behavioral impacts.
Rachel Y. Chock, Eduardo Bessa, Josue David Arteaga‐Torres, Liv Baker, Richard Buchholz, Barbara Clucas, Cassandra Nuñez, Gabriela M. Pinho, Bruce A. Schulte, Daniel T. Blumstein, Bernard Kitheka, Alexander G. Allison, J. Edgardo Arevalo, Debra A. Hamilton, Claudio M. Monteza‐Moreno, Laney H. Nute, Javier Rodríguez‐Fonseca, Luis Sandoval, Jessica Stamn, Jennifer L. Verdolin, Lynn Von Hagen, Jimmy W. Wehsener, Brett M. Seymoure   +22 more
wiley   +1 more source

Impacts of higher daytime temperatures on viable pollen and fruit production in common Cerrado tree Byrsonima pachyphylla (Malpighiaceae)

Biotropica, Volume 56, Issue 5, September 2024.
Temperatures in the Brazilian Cerrado—an important, complex, and biodiverse savannah ecosystem–are increasing, potentially impacting many aspects of plant development and function, including sexual reproduction, which is thought to be particularly sensitive to temperature stress.
Georgina A. Werkmeister, David R. Galbraith, Márcia Cardoso Silva, Jairo Matos Rocha, Milene Alves Oliveira Lima, Pedro Gabriel Tubin, Beatriz Schwantes Marimon, Ben Hur Marimon‐Junior, David Ashley, Santiago Clerici, Oliver L. Phillips, Emanuel Gloor   +11 more
wiley   +1 more source

Percepção de casos de estresse, depressão e ansiedade em filiadas(os) ao SINPAF CODEVASF 6ª SR (Juazeiro-BA)

Cadernos Cajuína
Nas últimas décadas, o ambiente de trabalho tem se tornado um dos principais cenários para o surgimento de transtornos mentais, sobretudo o estresse, a ansiedade e a depressão.
João Coimbra Neto, Emília Monique Lopes dos Santos   +1 more
doaj   +1 more source