Silicon-mediated improvement in the salt resistance of wheat (Triticum aestivum) results from increased sodium exclusion and resistance to oxidative stress

Functional Plant Biology : FPB
Muhammad SaqibSven Schubert

Abstract

Silicon (Si) is reported to reduce the effect of salinity on wheat (Triticum aestivum L.) and other crops. In the present study, Si decreased plant Na+ uptake and shoot : root Na+ distribution of a salt-resistant as well as a salt-sensitive wheat genotype. Reduced shoot Na+ concentration and increased shoot K+ : Na+ ratio led to improved plant growth. Silicon increased cell-wall Na+ binding from 49% in SARC-1 and 37% in 7-Cerros under salinity to 87% in SARC-1 and 79% in 7-Cerros under salinity + silicon. It may also have resulted in decreased potentially toxic leaf sap Na+ concentration. The concentration of glutathione, an important antioxidant in plants, was increased due to the addition of Si under saline conditions. The salt-resistant wheat genotype SARC-1 was less Si-responsive in terms of shoot fresh weight, having a 39% increase compared with a 49% increase in 7-Cerros, as well as root fresh weight, having a 12% increase compared with a 22% in 7-Cerros. It is concluded that Si may have improved shoot growth of the salt-resistant as well as the salt-sensitive wheat genotype by decreasing plant Na+ uptake and shoot : root Na+ distribution as well as by increasing glutathione concentration. Silicon may have also improved i...Continue Reading

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Citations

Aug 28, 2014·The Plant Journal : for Cell and Molecular Biology·Caitlin Siobhan ByrtMatthew Gilliham
May 26, 2010·Mycorrhiza·Edith C HammerHåkan Wallander
Aug 4, 2016·Frontiers in Plant Science·Devrim CoskunHerbert J Kronzucker
Dec 4, 2019·Frontiers in Plant Science·Adil KhanAhmed Al-Harrasi
Jun 12, 2013·Nucleic Acids Research·Mickael LeclercqMathieu Blanchette
Sep 4, 2015·Environmental Science and Pollution Research International·Muhammad RizwanFarhat Abbas
Jul 19, 2019·Small·Mujeebur Rahman KhanChuanbin Mao
Feb 17, 2015·BioMed Research International·Mahbod SahebiM Shabanimofrad
Feb 14, 2017·BioMed Research International·Mahbod SahebiNarges Atabaki
Dec 9, 2009·Plant, Cell & Environment·Darren Craig Plett, Inge Skrumsager Møller
Nov 28, 2020·Plant Physiology and Biochemistry : PPB·Guochao YanYongchao Liang
Mar 6, 2021·Plant Physiology and Biochemistry : PPB·Pallavi DhimanRupesh Deshmukh
Jul 13, 2021·Frontiers in Plant Science·Jelena PavlovicMiroslav Nikolic

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