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Hydrogen-rich water promotes elongation of hypocotyls and roots in plants through mediating the level of endogenous gibberellin and auxin

Citation

Wu, Q and Su, N and Huang, X and Ling, X and Yu, M and Cui, J and Shabala, SI, Hydrogen-rich water promotes elongation of hypocotyls and roots in plants through mediating the level of endogenous gibberellin and auxin, Functional Plant Biology, 47, (9) pp. 771-778. ISSN 1445-4408 (2020) [Refereed Article]

Copyright Statement

Copyrght 2020 CSIRO

DOI: doi:10.1071/FP19107

Abstract

The aim of this study was to investigate effects of the hydrogen-rich water (HRW) on the vegetable growth, and explore the possibility of applying HRW for protected cultivation of vegetables. Results showed that compared with control, HRW treatment significantly promoted fresh weight, hypocotyl length and root length of mung bean seedlings. The strongest stimulation was observed for 480 mu M H-2 (60% of saturated HRW concentration) treatment. This concentration was used in the following experiments. The enhanced cell elongation was correlated with the changes in the level of endogenous phytohormones. In the dark-grown hypocotyls and roots of mung bean seedlings, HRW significantly increased the content of IAA and GA(3). Addition of GA(3) enhanced the hypocotyl elongation only. uniconazole, an inhibitor of GA(3) biosynthesis, inhibited HRW-induced hypocotyl elongation, but did not affect root elongation. Exogenous application of IAA promoted HRW effects on elongation of both the hypocotyl and the root, while the IAA biosynthesis inhibitor TIBA negated the above affects. The general nature of HRW-induced growth-promoting effects was further confirmed in experiments involving cucumber and radish seedlings. Taken together, HRW treatment promoted growth of seedlings, by stimulating elongation of hypocotyl and root cells, via HRW-induced increase in GA and IAA content in the hypocotyl and the root respectively.

Item Details

Item Type:Refereed Article
Keywords:cell length, hypocotyl elongation, mung bean seedlings, plant hormones, root elongation
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Shabala, SI (Associate Professor Lana Shabala)
ID Code:152175
Year Published:2020
Web of Science® Times Cited:8
Deposited By:TIA - Research Institute
Deposited On:2022-08-12
Last Modified:2022-09-07
Downloads:0

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