Results 31 to 40 of about 102,042 (168)

Characterization of quaternary ammonium compounds in Flourensia xerophytic communities and response to UV-B radiation [PDF]

, 2014
As part of ongoing studies aimed at characterizing molecular components involved in the ecophysiological adaptations of native xerophytic plants from central Argentina, we demonstrated the presence of compatible solutes in Flourensia campestris (FC) and ...
Cantero, Juan Jose, Lopez Rivilli, Marisa Juana, López, D., Piazza, Leonardo A., Scopel, Ana Leonor, Silva, Mariana Paola, Tourn, G. M.   +6 more
core   +1 more source

Cytogenotoxic Effects of Fluopyram in Allium cepa Root Cells Involving Microtubule Disruption

Environmental Toxicology, EarlyView.
ABSTRACT Fluopyram is a next‐generation fungicide widely used in agriculture; however, its persistence in soils and mobility toward aquatic systems have raised concerns regarding potential ecotoxicological risks. This study evaluated the cytogenotoxic effects of a commercial fluopyram‐based pesticide formulation on Allium cepa root meristem cells ...
Carlos Filipe Camilo‐Cotrim, Natanael Alves da Silva, Gabriela Gomes Lima, Igor Rodrigues Vasconcelos, Luciana Souza Ondei, Elisa Flávia Luiz Cardoso Bailão, Antônio Sérgio Nakao de Aguiar, Marcelino Benvindo‐Souza, Leonardo Luiz Borges, Virgínia Damin, Luciane Madureira Almeida   +10 more
wiley   +1 more source

Nanopartículas de Hidroxiapatita Utilizado como Fertilizante Eficaz en la Calidad del Cultivo de Girasol

Terra Latinoamericana
La nanotecnología implica la manipulación de materiales a escala atómica o molecular, particularmente aquellos menores a 100 nm, los cuales presentan propiedades únicas debido a los efectos cuánticos y a una alta relación superficie-volumen.
Oscar Emmanuel Gómez-García, Eduardo Arón Flores-Hernández, Rubén López-Salazar, Alejandro Moreno-Reséndez, Mercedes Georgina Ramírez-Aragón   +4 more
doaj   +1 more source

Actividad fungicida/fungistática in vitro del fosfito de manganeso contra hongos patógenos habitantes del suelo con soja [PDF]

, 2017
Las pudriciones de raíz y tallo (PRYT) en el cultivo de soja causadas por patógenos habitantes del suelo son enfermedades comúnmente encontradas en campos de soja y son una de las causas más importantes de pérdidas económicas. La sensibilidad micelial de
Carmona, Marcelo Anibal, Formento, N. A., Luque, A. G., Ravotti, M. E., Sautua, Francisco, Scandiani, María Mercedes, Simonetti, Ester   +6 more
core  

Is the endophyte‐based plant protection against aphids mediated by changes in the insect microbiome?

Insect Science, EarlyView.
We showed that the fungal endophyte Epichloë strain AR37 increased the plant resistance against aphids via the production of indole diterpene alkaloids. The reduction in aphid performance was not associated with changes in abundance/composition/diversity of the insect's bacterial microbiota, but additional endophyte effects on this microbiota cannot be
Daniel A. Bastías, Luis Carvalho, Ruy Jáuregui, Richard D. Johnson, Wei Zhang, Pedro E. Gundel   +5 more
wiley   +1 more source

A gynandromorph of Xylocopa augusti and an unusual record of X. iris from Brazil (Hymenoptera: Apidae: Xylocopini) [PDF]

, 2015
We describe and illustrate for the first time a mixed gynandromorph of Xylocopa(Neoxylocopa) augusti Lepeletier de Saint Fargeau from Buenos Aires, Argentina. Also, we document and discuss a historical specimen of the Old World carpenter bee X. (Copoxyla)
Gonzalez, Victor H., Lucia, Mariano, Villamil, Soledad Camila   +2 more
core   +4 more sources

Monitoring spirodiclofen resistance in female Brevipalpus yothersi (Acari: Tenuipalpidae) from citrus orchards in Southeastern Brazil

Agricultural and Forest Entomology, EarlyView.
Spirodiclofen resistance levels in B. yothersi varied geographically across the Brazilian citrus belt, with higher resistance in the central region. Sublethal effects included reduced oviposition, increased non‐viable eggs and disrupted female reproduction.
Hector Alonso Escobar‐Garcia, Daniel Júnior de Andrade   +1 more
wiley   +1 more source

Seasonal Variation in Leaf Growth and Antioxidant Content of Moringa oleifera Cultivated at Buenos Aires, Argentina [PDF]

, 2016
The properties and applications of Moringa oleifera are so vast that it is called the "miracle tree". The objective of this work is to study the seasonal variations in the leaf antioxidant content and the scavenging activity on DPPH radicals in ...
Arena, Miriam Elisabet, Radice, Silvia
core   +1 more source

Insects and Survival: A Review of Primary and Secondary Defense Strategies

Entomologia Experimentalis et Applicata, EarlyView.
Based on a review of three decades of literature, insect defense mechanisms are classified into primary (I) and secondary (II) mechanisms of behavioral, morphological, and chemical nature. These mechanisms have been recorded in 22 (I) and 20 (II) orders, respectively.
Lucas Fernandes Silva, Rodrigo Almeida Pinheiro, José Cola Zanuncio, Conceição Aparecida dos Santos   +3 more
wiley   +1 more source

Historia agraria para los agrónomos

Revista de Historia, 2003
El desarrollo agropecuario puede ser considerado como un proceso continuo de transformación (en el tiempo) y de diferenciación (en el espacio) de los sistemas de producción agropecuaria.
Marc Dufumier
doaj