Journal Article

Nanoselenium transformation and inhibition of cadmium accumulation by regulating the lignin biosynthetic pathway and plant hormone signal transduction in pepper plants

Li, Jia-Qi, Wu, Yangliu, Li, Dong, Zhou, Chunran, Kang, Lu, Ma, Jinling, Zhang, Jingbang, Deng, Kailin, Pan, Canping, An, Quanshun

2021

Overview

Selenium (Se) can promote the growth and resistance of agricultural crops as fertilizers, while the role of nano-selenium (nano-Se) against Cd remains unclear in pepper plants ( Capsicum annuum L.). Biofortification with nano-Se observably restored Cd stress by decreasing the level of Cd in plant tissues and boosting the accumulation in biomass. The Se compounds transformed by nano-Se were primarily in the form of SeMet and MeSeCys in pepper tissues. Differential metabolites and the genes of plant signal transduction and lignin biosynthesis were measured by employing transcriptomics and determining target metabolites. The number of lignin-related genes ( PAL , CAD , 4CL , and COMT ) and contents of metabolites (sinapyl alcohol, phenylalanine, p -coumaryl alcohol, caffeyl alcohol, and coniferaldehyde) were remarkably enhanced by treatment with Cd1Se0.2, thus, maintaining the integrity of cell walls in the roots. It also enhanced signal transduction by plant hormones and responsive resistance by inducing the biosynthesis of genes ( BZR1 , LOX3 , and NCDE1 ) and metabolites (brassinolide, abscisic acid, and jasmonic acid) in the roots and leaves. In general, this study can enable a better understanding of the protective mechanism of nano-Se in improving the capacity of plants to resist environmental stress.

• Publisher: BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
• Subject: Abscisic acid / Accumulation / Agrochemicals / Amino acids / Analysis / Antioxidants / Biochemistry / Biosynthesis / Biosynthetic Pathways - genetics / Biosynthetic Pathways - physiology / Biotechnology / Brassinolide / Cadmium / Cadmium - toxicity / Capsicum - chemistry / Capsicum - drug effects / Capsicum - metabolism / Capsicum annuum / Carbohydrates / Cd stress / Cell division / Cell walls / Cellular signal transduction / Chemical properties / Chemistry / Chemistry and Materials Science / Control / Crops / Environmental stress / Enzymes / Fertilizers / Genes / Genetic transformation / Growth / Health aspects / Heavy metals / Hormones / Jasmonic acid / Lignin / Lignin - biosynthesis / Lignin biosynthetic pathway / Metabolism / Metabolites / Metal Nanoparticles - chemistry / Molecular Medicine / Nanomaterials / Nanoselenium / Nanotechnology / Nutrients / Pepper plants / Peppers / Phenylalanine / Photosynthesis / Physiological aspects / Physiology / Phytohormones / Plant Growth Regulators - genetics / Plant Growth Regulators - metabolism / Plant hormone signal transduction / Plant hormones / Plant tissues / Roots / Selenium / Selenium - pharmacology / Signal transduction / Signal Transduction - drug effects / Sinapyl alcohol / Stress, Physiological - drug effects / Structure / Towards nanotechnology in agrifood sciences / Transcriptome - drug effects