Abstract
ABSTRACT: Pesticides are applied all over the world to protect plants from pests. However, their application also causes toxicity to plants, which negatively affects the growth and development of plants. Pesticide toxicity results in reduction of chlorophyll and protein contents, accompanied by decreased photosynthetic efficiency of plants. Pesticide stress also generates reactive oxygen species which causes oxidative stress to plants. To attenuate the negative effects of oxidative stress, the antioxidative defense system of plants gets activated, and it includes enzymatic antioxidants as well as non-enzymatic antioxidants. The present review gives an overview of various physiological responses of plants under pesticide toxicity in tabulated form.
Highlights
Approved: September 18, 2017A pesticide is a compound which is utilized to repel, kill or prevent any Planta Daninha 2019; v37:e019184291 pest
On the basis of the target killed, pesticides are mainly classified as herbicides, fungicides and insecticides
Pesticide application causes toxicity to plants, which can be seen in the form of necrosis, chlorosis, stunting, burns and twisting of leaves (Sharma et al, 2018a)
Summary
ABSTRACT - Pesticides are applied all over the world to protect plants from pests. Their application causes toxicity to plants, which negatively affects the growth and development of plants. Essa aplicação também causa toxicidade às plantas, o que afeta de forma negativa o crescimento e o desenvolvimento delas. O estresse causado por pesticidas também gera espécies reativas de oxigênio, que causam estresse oxidativo às plantas. Para atenuar os efeitos negativos do estresse oxidativo, o sistema de defesa antioxidante das plantas é ativado, e isso inclui antioxidantes enzimáticos e não enzimáticos. A presente revisão fornece uma visão geral de várias respostas fisiológicas de plantas sob toxicidade de pesticidas, em forma de tabela. Palavras-chave: respostas fisiológicas, sistema de defesa antioxidante, estresse oxidativo
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