Abstract
Tachigali vulgaris is a pioneer species, colonizing marginal lands and roadsides, often initiates secondary succession in open areas by the intense germination of their seeds in the soil. The main components of the antioxidant defense system can be divided into enzyme found primarily intracellularly (superoxide dismutase, catalase, guaiacol peroxidase, ascorbate peroxidase, glutathione reductase, etc.) and small non-enzymatic molecules that can be divided into soluble in water (ascorbic acid, glutathione and bilirubin) and lipid soluble (α-tocopherol, β-carotene and lycopene). Plants were then separated into leaves and roots, wrapped in aluminum foil and stored in Ultrafreezer at -80 °C. To determine the enzymatic activity and biochemical analyzes, the plant material was first frozen in liquid nitrogen and subsequently lyophilized. The experimental design was completely randomized in a factorial 3 × 2 (three times: zero, five and ten days of water suspension, and two water conditions: control and drought stress), with four repetitions. Analysis of variance was applied to the results and when significant difference, the means were compared using the t test adopting the 5% level of probability through the statistical package (7.7 beta Assistat, 2015). Since they were able to drive quickly the enzymatic antioxidant defense system (SOD, CAT and APX), however, failing to reduce oxidative damage resulting in the death of them.
Highlights
With the advent of climate change and global warming, we are increasingly seeking knowledge about the physiology of plant species under water deficiency conditions, so that they can be recommended for homogeneous and/or intercropped plantations, as well as for recovery of degraded areas
Tachigali vulgaris is a pioneer species, colonizing marginal lands and roadsides, often initiates secondary succession in open areas by intense germination of the seeds in the soil. It has been highlighted by the rapid growth and its wood is widely used by rural communities in the Midwest and Northeast, in making fence posts, pillars, packaging and rafters, in construction, as well as source for the production of firewood and charcoal, and even suitable for energy plantations (Franke, 1999)
This study aims to evaluate the enzymatic and non-enzymatic antioxidant behavior, the fluid status and electrolyte leakage of Tachi branco plants under drought
Summary
With the advent of climate change and global warming, we are increasingly seeking knowledge about the physiology of plant species under water deficiency conditions, so that they can be recommended for homogeneous and/or intercropped plantations, as well as for recovery of degraded areas. Tachigali vulgaris is a pioneer species, colonizing marginal lands and roadsides, often initiates secondary succession in open areas by intense germination of the seeds in the soil. It has been highlighted by the rapid growth and its wood is widely used by rural communities in the Midwest and Northeast, in making fence posts, pillars, packaging and rafters, in construction, as well as source for the production of firewood and charcoal, and even suitable for energy plantations (Franke, 1999). The drought, along with factors in over-temperature and high irradiance, causes a reduction in photosynthesis, leading to decrease in the use of the incident radiation, resulting in reducing accumulation of power (NADPH) and reduction in the pool of the final acceptor of the electron transport chain (NADP+). In this process can be escaped electrons, which in turn react with molecular oxygen (O2), forming the so-called reactive oxygen species (ROS) (Cavatte et al, 2012)
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