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Soil microalgae and cyanobacteria: the biotechnological potential in the maintenance of soil fertility and health.

Authors
  • Abinandan, Sudharsanam1
  • Subashchandrabose, Suresh R1, 2
  • Venkateswarlu, Kadiyala3
  • Megharaj, Mallavarapu1, 2
  • 1 Global Centre for Environmental Remediation (GCER), Faculty of Science, University of Newcastle , Callaghan , Australia. , (Australia)
  • 2 Cooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE), University of Newcastle , Callaghan , Australia. , (Australia)
  • 3 Department of Microbiology, Sri Krishnadevaraya University , Anantapuramu , India. , (India)
Type
Published Article
Journal
Critical reviews in biotechnology
Publication Date
Dec 01, 2019
Volume
39
Issue
8
Pages
981–998
Identifiers
DOI: 10.1080/07388551.2019.1654972
PMID: 31455102
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The soil microbiota plays a major role in maintaining the nutrient balance, carbon sink, and soil health. Numerous studies reported on the function of microbiota such as plant growth-promoting bacteria and fungi in soil. Although microalgae and cyanobacteria are ubiquitous in soil, very less attention has been paid on the potential of these microorganisms. The indiscriminate use of various chemicals to enhance agricultural productivity led to serious consequences like structure instability, accumulation of toxic contaminants, etc., leading to an ecological imbalance between soil, plant, and microbiota. However, the significant role of microalgae and cyanobacteria in crop productivity and other potential options has been so far undermined. The intent of the present critical review is to highlight the significance of this unique group of microorganisms in terms of maintaining soil fertility and soil health. Beneficial soil ecological applications of these two groups in enhancing plant growth, establishing interrelationships among other microbes, and detoxifying chemical agents such as insecticides, herbicides, etc. through mutualistic cooperation by synthesizing enzymes and phytohormones are presented. Since recombinant technology involving genomic integration favors the development of useful traits in microalgae and cyanobacteria for their potential application in improvement of soil fertility and health, the merits and demerits of various such advanced methodologies associated in harnessing the biotechnological potential of these photosynthetic microorganisms for sustainable agriculture were also discussed.

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