Changes in gene expression during germination reveal pea genotypes with either "quiescence" or "escape" mechanisms of waterlogging tolerance

Plant, Cell & Environment
Md Shahin Uz ZamanParwinder Kaur

Abstract

Waterlogging causes germination failure in pea (Pisum sativum L.). Three genotypes (BARI Motorshuti-3, Natore local-2 [NL-2], and Kaspa) contrasting in ability to germinate in waterlogged soil were exposed to different durations of waterlogging. Whole genome RNAseq was employed to capture differentially expressing genes. The ability to germinate in waterlogged soil was associated with testa colour and testa membrane integrity as confirmed by electrical conductivity measurements. Genotypes Kaspa and NL-2 displayed different mechanisms of tolerance. In Kaspa, an energy conserving strategy was indicated by a strong upregulation of tyrosine protein kinsase and down regulation of linoleate 9S-lipoxygenase 5, a fat metabolism gene. In contrast, a faster energy utilization strategy was suggested in NL-2 by the marked upregulation of a subtilase family protein and peroxisomal adenine nucleotide carrier 2, a fat metabolizing gene. Waterlogging susceptibility in germinating seeds of genotype BARI Motorshuti-3 was linked to upregulation of a kunitz-type trypsin/protease inhibitor that blocks protein metabolism and may lead to excessive lipid metabolism and the membrane leakage associated with waterlogging damage. Pathway analyses based on...Continue Reading

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Citations

Dec 24, 2018·Plant, Cell & Environment·Christine H FoyerHon-Ming Lam
Aug 17, 2019·Frontiers in Plant Science·Md Shahin Uz ZamanWilliam Erskine
Jan 13, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Arun K PandeyPei Xu
Oct 16, 2020·International Journal of Molecular Sciences·Xin Wang, Setsuko Komatsu

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