Mycorrhizae and Rhizobacteria on Precambrian Rocky Gold Mine Tailings: II. Mine-Adapted Symbionts Alleviate Soil Element Imbalance for a Better Nutritional Status of White Spruce Seedlings

Frontiers in Plant Science
Martin B NadeauDamase P Khasa

Abstract

In the context of a phytorestoration project, the purpose of this study was to assess the respective contribution to the nutritional status of Picea glauca seedlings of ectomycorrhizae and rhizobacteria native or not to the Sigma-Lamaque gold mine wastes in northern Quebec, Canada. In a glasshouse experiment, inoculated plants were grown for 32 weeks on coarse waste rocks or fine tailings obtained from the mining site. The survival, health, growth, and nutritional status of plants were better on coarse waste rocks than on fine tailings. Fe and Ca were especially found at high levels in plant tissues but at much lower concentrations on waste rocks. Interestingly, inoculation of microsymbionts had only minimal effects on N, P, K, and Mg plant status that were indeed close or within the concentration range encountered in healthy seedlings. However, both fungal and bacterial treatments improved Fe and Ca concentrations in plant tissues. Fe concentration in the foliage of plants inoculated with the fungi Tricholoma scalpturatum Tri. scalp. MBN0213 GenBank #KC840613 and Cadophora finlandia Cad. fin. MBN0213 GenBank #KC840625 was reduced by >50%. Both fungi were isolated from the mining site. The rhizobacteria, Azotobacter chroococcum...Continue Reading

References

May 6, 2003·Annual Review of Phytopathology·M F AllenK K Treseder
Oct 8, 2003·Mycorrhiza·Justin Trowbridge, Ari Jumpponen
Oct 11, 2003·Biotechnology Advances·H Rodríguez, R Fraga
Feb 8, 2006·Applied and Environmental Microbiology·Christophe CalvarusoPascale Frey-Klett
Jun 15, 2006·Journal of Zhejiang University. Science. B·Abdul G Khan
Aug 8, 2009·Trends in Microbiology·Stéphane UrozPascale Frey-Klett
Dec 25, 2010·Journal of Bacteriology·Miguel A MatillaJuan-Luis Ramos
Feb 22, 2012·Mycorrhiza·R A AdelekeD P Khasa
Jul 26, 2015·International Journal of Phytoremediation·Fifanou G Vodouhe, Damase P Khasa
Apr 14, 2017·Ecotoxicology and Environmental Safety·Mahwish ZahoorAnwar Hussain
Nov 23, 2017·The New Phytologist·Katherine A Dynarski, Benjamin Z Houlton

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Datasets Mentioned

BETA
KC840613
KC840625
FR828334

Software Mentioned

WinSEEDLE
DA
SAS

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