Aromatic Plant–Microbe Associations: A Sustainable Approach for Remediation of Polluted Soils

Autor: Rajesh Kumar Verma, Pragya Trivedi, Sanjeet K. Verma, Anand Kumar Gupta
Rok vydání: 2017
Předmět:
Zdroj: Agro-Environmental Sustainability ISBN: 9783319497266
Popis: Plant–microbe association is a key driving factor for proper functioning of an ecosystem. Microbes are being popularly used to facilitate plant growth and agricultural productivity as they are actively involved in decomposition of organic matter, biogeochemical cycling, and soil structure formation. In spite of these functions, current empirical studies support the use of microbes for bioremediation (bioaccumulation, bio-transformation, volatilization, etc.) of various pollutants in our environment. As food crops cannot be recommended for cultivation on polluted sites due to potential risks of pollutants’ bioaccumulation, on the other hand, arable lands, cannot be utilized for cultivation of aromatic plants due to pressure of food demand. Hence, cultivation of aromatic crops on such contaminated sites will be a safe strategy as aromatic plants are stress-tolerant and their end product is essential oils, which are non-edible and remain free from pollutants. Reports suggest that the use of suitable plant–microbe association can be helpful in remediation of polluted sites as microbial secondary metabolites favor the plant growth, increase plant tolerance to pollutants, and also enhance the phytoextraction efficiency of plant by increasing the bioavailability of pollutants in rhizosphere. In this chapter, therefore, we review the available literature and discuss future perspectives on application of microbes in association with aromatic plants for remediation of heavy metal and xenobiotic polluted soils.
Databáze: OpenAIRE