Effects of CO2 application coupled with endophyte inoculation on rhizosphere characteristics and cadmium uptake by Sedum alfredii Hance in response to cadmium stress.
Effects of CO2 application coupled with endophyte inoculation on rhizosphere characteristics and cadmium uptake by Sedum alfredii Hance in response to cadmium stress.
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DOI：
10.1016/j.jenvman.2019.03.084
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发表时间：
2019-06
影响因子：
8.7
通讯作者：
L. Tang;Y. Hamid;Z. A. Sahito;Hanumanth Kumar Gurajala;Zhenli He;Xiaoe Yang
中科院分区：
文献类型：
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作者：
L. Tang;Y. Hamid;Z. A. Sahito;Hanumanth Kumar Gurajala;Zhenli He;Xiaoe Yang
在水培和根箱培养条件下，比较研究了施CO2和接种内生菌对两种生态型白蜡梅对Cd胁迫的生长、根际特性和Cd吸收的影响。结果表明，施CO2和接种内生菌均显著(P<； )促进植株生长(鲜重和干重)，改善根系形态性状(SRL、SRA、SRV、ARD和RTN)和分泌物(pH、TOC、TN、可溶性糖和有机酸)，改变两个生态型OFS对Cd的吸收和分配。阿尔弗雷迪。同时，生物强化处理降低了根际土壤全Cd和DTPA可提取态Cd。叠加生物强化最大限度地改善了上述参数，有可能提高超积累植物的植物修复效率，维持非超积累植物在Cd污染土壤中的正常生长。
Comparative impact of CO2application and endophyte inoculation was investigated on the growth, rhizosphere characteristics, and cadmium (Cd) absorption of two ecotypes ofSedumalfrediiHance in response to Cd stress under hydroponic or rhizo-box culture conditions. The results showed that both CO2application 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 ofS. 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.