Silicon flow from root to shoot in pepper: a comprehensive in silico analysis reveals a potential linkage between gene expression and hormone signaling that stimulates plant growth and metabolism

PeerJ
Fernando Carlos Gómez-MerinoSara Monzerrat Ramírez-Olvera

Abstract

Silicon (Si) is categorized as a quasi-essential element for plants thanks to the benefits on growth, development and metabolism in a hormetic manner. Si uptake is cooperatively mediated by Lsi1 and Lsi2. Nevertheless, Lsi channels have not yet been identified and characterized in pepper (Capsicum annuum), while genes involved in major physiological processes in pepper are Si-regulated. Furthermore, Si and phytohormones may act together in regulating plant growth, metabolism and tolerance against stress. Our aim was to identify potential synergies between Si and phytohormones stimulating growth and metabolism in pepper, based on in silico data. We established a hydroponic system to test the effect of Si (0, 60, 125 and 250 mg L-1 Si) on the concentrations of this element in different pepper plant tissues. We also performed an in silico analysis of putative Lsi genes from pepper and other species, including tomato (Solanum lycopersicum), potato (Solanum tuberosum) and Arabidopsis thaliana, to look for cis-acting elements responsive to phytohormones in their promoter regions. With the Lsi1 and Lsi2 protein sequences from various plant species, we performed a phylogenetic analysis. Taking into consideration the Lsi genes retrieved...Continue Reading

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Citations

Jul 6, 2021·Plant Physiology and Biochemistry : PPB·Gaurav RaturiRupesh Deshmukh

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Software Mentioned

Mega7
gplots
HMMER3
blastp
eFP Browser
R Core
eFP
Clustal Omega
R
SAS

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