2009
DOI: 10.1590/s0103-90162009000300015
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Abstract: Water stress is one of the most important environmental factors inducing physiological changes in plants, such as decrease in the water potential of the cells, the stomatal closure; and the development of oxidative processes mediated by reactive oxygen species (ROS). Antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) are efficient scavengers of ROS. The aim of this research was to examine how the application of biostimulant based on humic substances and aminoacids ma… Show more

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Cited by 73 publications
(41 citation statements)
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“…Quintela et al (2015), evaluating water stress intensity and duration on the pathosystem sugarcane x Meloidogyne incognita, observed an increase in APX activity without affecting CAT activity in the tested water treatments. In maize and soybean crops, the enzymes CAT and APX acted in a similar way under extreme situations, increasing as a result of the severity of the applied stress (Vasconcelos et al, 2009). Azevedo (2013) observed increase in CAT and APX activity in sugarcane for increasing levels of salinity.…”
Section: Bmentioning
confidence: 99%
“…Quintela et al (2015), evaluating water stress intensity and duration on the pathosystem sugarcane x Meloidogyne incognita, observed an increase in APX activity without affecting CAT activity in the tested water treatments. In maize and soybean crops, the enzymes CAT and APX acted in a similar way under extreme situations, increasing as a result of the severity of the applied stress (Vasconcelos et al, 2009). Azevedo (2013) observed increase in CAT and APX activity in sugarcane for increasing levels of salinity.…”
Section: Bmentioning
confidence: 99%
“…No se observaron diferencias significativas en las plantas injertadas para la producción de tomates. Vasconcelos et al (2009) sugieren que bajo condiciones de salinidad los bioestimulantes disminuyen el estrés hídrico, coincidiendo con los resultados de mayor consumo hídrico en plantas francas con bioestimulante (Tabla 1) y la mayor producción de frutos (Tabla 2). …”
Section: Parámetros De Producción De Tomate Cherryunclassified
“…Estos productos contienen aminoácidos, ácidos húmicos y/o fitohormonas de fácil disponibilidad, cuya absorción no depende de la fotosíntesis y disminuye el consumo energético de la planta (Parrado et al (2008). Algunos efectos del uso de bioestimulantes son descritos por Vasconcelos et al (2009), como el aumento de la retención de agua de la hoja y el metabolismo antioxidante cuando la planta es sometida a estrés hídrico. La demanda por insumos agrícolas que no contaminen el medio ambiente ha estimulado el uso de productos a base de algas marinas como bioestimulante de raíces.…”
Section: Introductionunclassified
“…Environmental stresses promote enhanced production reactive oxygen species (ROS), such as superoxide anion (O 2 -), hydrogen peroxide (H 2 O 2 ), and many free radicals and its consequent accumulation in plants and thereby damage DNA, proteins and lipids (Gratão et al, 2005;Vasconcelos et al, 2009). To protect its cells from ROS, drought tolerant plants activate an oxidative defense system, formed by enzymatic and non-enzymatic components capable of maintaining a favorable balance between ROS and the detoxifying capacity (Pompeu et al, 2008;Vasconcelos et al, 2009).…”
Section: Introductionmentioning
confidence: 99%
“…To protect its cells from ROS, drought tolerant plants activate an oxidative defense system, formed by enzymatic and non-enzymatic components capable of maintaining a favorable balance between ROS and the detoxifying capacity (Pompeu et al, 2008;Vasconcelos et al, 2009). Moreover, plant responses to different types of stresses are associated with generation of ROS, suggesting that ROS may function as a common signal in signaling pathways of plant stress responses (Gratão et al, 2005).…”
Section: Introductionmentioning
confidence: 99%