Enzymatic antioxidant responses to biostimulants in maize and soybean subjected to drought
By A. Vasconcelos, Xunzhong Zhang, Erika Ervin, J. C. Kiehl. 2009
89 citations recorded by the source corpus.
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 may affect activity levels of SOD, CAT, and APX of maize and soybean plants under well-watered or drought stress conditions. Pots (4.5 L) were filled with a Typic Hapludult soil where the biostimulants doses were applied. It was taken leaf samples in order to analyze SOD, CAT, and APX activities in plants. SOD and APX activity levels were increased by application of biostimulant 1 in maize subjected to stress. Catalase activity was not enhanced in plants by using the biostimulants. The composition of the biostimulants was not able to enhance stress tolerance in maize and soybean plants subjected to water stress.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/f0b02d7c8922aae9935873e8da7c25a1ba2127d5
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In Plant Science
Citations in the corpus
- Plant biostimulants: physiological responses induced by protein hydrolyzed-based products and humic substances in plant metabolism (2016, background): “…defined as materials that contain one or more substances and/or microorganisms able to stimulate nutrient uptake and use efficiency by plants, increase plant tolerance to abiotic/biotic stress and improve crop quality when applied in small amounts (De Vasconcelos et al., 2009; Calvo et al., 2014).”
- The Use of a Plant-Based Biostimulant Improves Plant Performances and Fruit Quality in Tomato Plants Grown at Elevated Temperatures (2020, background): “It has been also demonstrated that biostimulants application is able to enhance tolerance to different abiotic stresses, such as drought [11,12], salinity [7,13,14], and thermal stresses [15].”
- Biostimulants in Plant Science: A Global Perspective (2017, background): “…properties with several showing negative effects compared when contrasted with well-designed controls (Csizinszky, 1984, 1986; Albregts et al., 1988; Di Marco and Osti, 2009; Vasconcelos et al., 2009; Banks and Percival, 2012; Cerdan et al., 2013; de Oliveira et al., 2013; Carvalho et al., 2014).”