Modulation of Energy Metabolism Is Important for Low-Oxygen Stress Adaptation in Brassicaceae Species

International Journal of Molecular Sciences
Ji-Hye HwangDong-Hee Lee

Abstract

Low-oxygen stress, mainly caused by soil flooding, is a serious abiotic stress affecting crop productivity worldwide. To understand the mechanisms of low-oxygen stress responses and adaptation of plants, we characterized and compared low-oxygen responses in six species with different accessions of the Brassicaceae family. Based on the growth and survival responses to submergence or low-oxygen condition, these accessions could be divided into three groups: (i) Highly tolerant species (Rorippa islandica and Arabis stelleri); (ii) moderately tolerant species (Arabidopsis thaliana [esk-1, Ler, Ws and Col-0 ecotype]); and (iii) intolerant species (Thlaspi arvense, Thellungiella salsuginea [Shandong and Yukon ecotype], and Thellungiella parvula). Gene expression profiling using Operon Arabidopsis microarray was carried out with RNA from roots of A. thaliana (Col-0), A. stelleri, R. islandica, and T. salsuginea (Shandong) treated with low-oxygen stress (0.1% O2/99.9% N2) for 0, 1, 3, 8, 24, and 72 h. We performed a comparative analysis of the gene expression profiles using the gene set enrichment analysis (GSEA) method. Our comparative analysis suggested that under low-oxygen stress each species distinctively reconfigures the energy m...Continue Reading

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Citations

Dec 29, 2020·Journal of Experimental Botany·José LeónBeatriz Gayubas

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Methods Mentioned

BETA
PCR
electrophoresis

Software Mentioned

R Statistical Package
MapMan
ImaGene
ThermaCAM Quikplot
Gene Set Enrichment Analysis ( GSEA )
GSEA
GeneSight

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