Abstract
Plants host diverse but taxonomically structured communities of microorganisms, called microbiome, which colonize various parts of host plants. Plant-associated microbial communities have been shown to confer multiple beneficial advantages to their host plants, such as nutrient acquisition, growth promotion, pathogen resistance, and environmental stress tolerance. Systematic studies have provided new insights into the economically and ecologically important microbial communities as hubs of core microbiota and revealed their beneficial impacts on the host plants. Microbiome engineering, which can improve the functional capabilities of native microbial species under challenging agricultural ambiance, is an emerging biotechnological strategy to improve crop yield and resilience against variety of environmental constraints of both biotic and abiotic nature. This review highlights the importance of indigenous microbial communities in improving plant health under pathogen-induced stress. Moreover, the potential solutions leading towards commercialization of proficient bioformulations for sustainable and improved crop production are also described.
Highlights
Interest in the control of crop diseases has recently increased due to the global requirement for eco-friendly approaches that would replace chemical fertilizers and pesticides in agricultural practices [1,2]
Developed culture-independent high-throughput sequencing has accelerated the identification of microbial communities inhabiting the surrounding spaces, as well as inside tissues and surfaces of plants, and demonstrated the existence of microbial lineage subsets, termed as ‘core microbiota’, which reproducibly make contacts with host plants across a wide range of environmental conditions [7,8]
biosynthetic gene clusters (BGCs) belonging to diverse biosynthetic classes of terpene system, post-translationally modified and ribosomally synthesized peptides, trans-AT polyketide synthases (PKSs), and non-ribosomal peptide synthetases (NRPSs) have been identified in phyllospheric bacteria of Arabidopsis plants [80]
Summary
Interest in the control of crop diseases has recently increased due to the global requirement for eco-friendly approaches that would replace chemical fertilizers and pesticides in agricultural practices [1,2]. Plants provide the place for the growth of niches and the proliferation of a diverse microbial community, including protists, fungi, bacteria, viruses, and nematodes [3,4]. These organisms play important roles in the health and productivity of crops by forming complex co-associations with plants [1]. 2021, 22, 6852 the plant microbiome, fungi and bacteria, which play significant roles in the proper functioning and health of plants [9,10], are dominant microbes in contrast to the other members of community, i.e., archaea, nematodes, algae, and protists. Current knowledge gaps and future research directions are discussed
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