Effects of CO 2 application coupled with endophyte inoculation on rhizosphere characteristics and cadmium uptake by Sedum alfredii Hance in response to cadmium stress.

Authors :: Tang L
Hamid Y
Sahito ZA
Gurajala HK
He Z
Yang X
Source :: Journal of environmental management [J Environ Manage] 2019 Jun 01; Vol. 239, pp. 287-298. Date of Electronic Publication: 2019 Mar 23.
Publication Year :: 2019
Abstract: Comparative impact of CO <subscript>2</subscript> application and endophyte inoculation was investigated on the growth, rhizosphere characteristics, and cadmium (Cd) absorption of two ecotypes of Sedum alfredii Hance in response to Cd stress under hydroponic or rhizo-box culture conditions. The results showed that both CO <subscript>2</subscript> application and endophyte inoculation significantly (P < 0.05) promoted plant growth (fresh weight and dry weight), improved root morphological properties (SRL, SRA, SRV, ARD and RTN) and exudation (pH, TOC, TN, soluble sugar and organic acids), changed Cd uptake and distribution of both ecotypes of S. alfredii. Meanwhile soil total and DTPA extractable Cd in rhizo-box decreased by biofortification treatments. Superposition biofortification exhibits utmost improvement for the above mentioned parameters, and has potential for enhancing phytoremediation efficiency of hyperaccumulator and sustaining regular growth of non-hyperaccumulator in Cd contaminated soils.<br /> (Copyright © 2019 Elsevier Ltd. All rights reserved.)

Subjects :: Endophytes drug effects
Hydroponics
Plant Roots chemistry
Sedum chemistry
Sedum drug effects
Soil chemistry
Cadmium pharmacology
Carbon Dioxide metabolism
Endophytes metabolism
Rhizosphere
Sedum metabolism

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