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

Autor:	Lu Kang, Yangliu Wu, Jingbang Zhang, Kailin Deng, Canping Pan, Jia-Qi Li, Quanshun An, Dong Li, Chunran Zhou, Jinling Ma
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Biomedical Engineering Pharmaceutical Science Medicine (miscellaneous) Metal Nanoparticles Bioengineering Applied Microbiology and Biotechnology Lignin Lignin biosynthetic pathway Cell wall chemistry.chemical_compound Selenium Plant Growth Regulators Stress Physiological Pepper Medical technology Nanoselenium R855-855.5 Plant hormone signal transduction Abscisic acid Brassinolide Pepper plants biology Cd stress Jasmonic acid Research fungi technology industry and agriculture food and beverages biology.organism_classification Biosynthetic Pathways Biochemistry chemistry Sinapyl alcohol Molecular Medicine Plant hormone Capsicum Transcriptome TP248.13-248.65 Cadmium Signal Transduction Biotechnology
Zdroj:	Journal of Nanobiotechnology, Vol 19, Iss 1, Pp 1-14 (2021) Journal of Nanobiotechnology
ISSN:	1477-3155
Popis:	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.
Databáze:	OpenAIRE
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