Signaling Molecule Hydrogen Sulfide Improves Seed Germination and Seedling Growth of Maize (Zea mays L.) Under High Temperature by Inducing Antioxidant System and Osmolyte Biosynthesis

Frontiers in Plant Science
Zhi-Hao ZhouZhong-Guang Li

Abstract

Hydrogen sulfide (H2S) is a novel type signaling molecule in plants. Seed germination is a key stage of life cycle of plants, which is vulnerable to environmental stress including high temperature. However, under high temperature stress, whether pre-soaking of maize seeds with NaHS (a H2S donor) could improve seed germination and seedling growth and the possible mechanisms are not completely clear. In this study, maize seeds pre-soaked with NaHS enhanced germination percentage, sprout length, root length, and fresh weight compared with the control without NaHS treatment, illustrating that H2S could improve maize seed germination and seedling growth under high temperature. In addition, in comparison to the control, NaHS pre-soaking stimulated antioxidant enzymes [ascorbate peroxidase (APX), glutathione reductase (GR), guaiacol peroxidase (GPX), superoxide dismutase (SOD), and catalase (CAT)] activities and the contents of water soluble non-enzymatic antioxidants [ascorbic acid (AsA) and glutathione (GSH)], as well as the ratio of reduced antioxidant to oxidized antioxidant. Moreover, pre-soaking with NaHS activated Δ1-pyrroline-5-carboxylate synthetase (P5CS) and ornithine aminotransferase [OAT; both are rate-limiting enzymes in...Continue Reading

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Citations

May 16, 2019·Journal of Experimental Botany·Cecilia GotorLuis C Romero
Jul 2, 2020·International Journal of Molecular Sciences·Lijuan XuanChongying Wang
Oct 28, 2019·The Biochemical Journal·Christophe Bailly
Aug 28, 2020·Plant Physiology and Biochemistry : PPB·Salvador González-GordoFrancisco J Corpas
Jun 13, 2021·Protoplasma·Zhong-Guang Li, Xin-Yu Ye
Dec 9, 2020·Plant Science : an International Journal of Experimental Plant Biology·Dengjing HuangWeibiao Liao

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Methods Mentioned

BETA
AsA

Software Mentioned

SigmaPlot
SPSS

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