Journal
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
Volume 51, Issue 9, Pages 897-938Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2020.1738193
Keywords
Oil production; phytoremediation; Vetiver-microbe interaction
Categories
Funding
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control [2017B030301012]
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control
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Vetiver grass, with high economic and ecological values, is widely planted for essential oil production and soil remediation purposes. It shows strong tolerance to extreme climate and soil conditions, and further research on its interaction with rhizospheric microbes may enhance its phytoremediation efficiency.
Vetiver grass (Chrysopogon zizaniodies) is a plant species with high economic and ecological values. In addition to being planted for essential oil production in over 70 countries, Vetiver was increasingly and successfully applied to soil erosion control, slope stabilization, and rehabilitation of degraded or contaminated lands. Vetiver can tolerate extreme climatic variations, including prolonged drought, flood, submergence, extreme temperature, high levels of salinity, sodicity, acidity, alkalinity, and a wide range of toxic metal(loid)s and organic contaminants. With a fast growth rate, high biomass, noninvasive impacts on local species, tolerance to pollution stress, and specific behavior of the roots, Vetiver is an ideal candidate for phytoremediation and restoration. It is crucial to understand whether the rhizospheric microbes associated with Vetiver play essential roles in stress tolerance. The principal objective of this article is to review the progress made so far in remediating contaminated sites using Vetiver, with emphasis on its interactions with soil microbes. Although little mechanistic information on Vetiver-microbe interactions in improving stress tolerance is available, this review extrapolates potential mechanisms by referring studies focus on plant stress tolerance and microbe-assisted adaptation.
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