24-Epibrassinolide Restores the Synthesis of Proteins and Amino Acids in Brassica juncea L. Leaves Under Imidacloprid Stress

Abstract

Pesticides are applied to protect crops from a variety of insect pests but their application cause toxicity to plants that results, among others, in reduction of protein as well as amino acid contents. The present study is aimed at observing the effect of seed pre-soaking with 24-epibrassinolide (EBL) on the protein and amino acid content in the leaves of Brassica juncea L. grown in soil that is amended with pesticide imidacloprid (IMI). Soil amendment with IMI resulted in a decrease in the contents in leaves of total proteins and 21 amino acids studied. Seed soaking with 100 nM of EBL resulted in the recovery of total protein as well as amino acid contents in leaves, when compared with plants grown in only IMI amended soils.

Abiotic Stress Tolerance in Crop Plants: Role of Phytohormones

“…The results revealed that all the three tested OPs retarded elongation of roots, increased MDA, H 2 O 2 and NO, while exogenous 24-EBL markedly decreased the accumulations of H 2 O 2 , NO and MDA vis-a-vis upregulating the expression of genes associated with antioxidant and detoxification systems. In case of pesticide stress, 24-EBL maintained the optimum synthesis of proteins and amino acids in Brassica juncea L. plants [71]. They applied 24-EBL (100 nM) via the seed presoaking treatment to study the changes in the synthesis of protein and amino acid contents grown under im-idacloprid (IMI)challenged environment.…”

Ação do mercúrio na germinação de sementes de Melanoxylon brauna Schott. (Fabaceae-Caesalpinoidae)

“…Esse metal, quando presente no solo, pode agir diretamente no embrião da semente ou no endosperma, atuando nas ligações -SH (grupamentos tióis das células), formando ligações -S-Hg-S-. Tal modificação na conformação molecular afeta o desenvolvimento do embrião, visto que esses tecidos possuem muitas dessas ligações-SH (TOMESCU et al 2017;SHARMA et al 2017SHARMA et al , 2018SOARES et al 2019).…”

“…Na semente, o Hg age diretamente no embrião ou no endosperma, interagindo rapidamente com os grupamentos tióis das células (ligações -SH). Essa modificação afeta o desenvolvimento do embrião, uma vez que seus tecidos são ricos nesse tipo de ligação (SHARMA et al, 2017;TOMESCU et al, 2017;HANDA et al, 2018;KOHLI et al, 2019;SHAHZAD et al, 2018;SOARES et al, 2019).…”