Actinomycetes – The microbial machinery for the organic-cycling, plant growth, and sustainable soil health

Javed, Zoya; Tripathi, Gyan Datta; Mishra, Mansi; Dashora, Kavya

doi:10.1016/j.bcab.2020.101893

Cited by 62 publications

(28 citation statements)

References 43 publications

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“…The area surrounding plant roots, called rhizosphere, is a space richly colonized by actinomycetes. Their high synthesis of antimicrobial compounds and other metabolites gives them a competitive advantage, besides helping with the improvement of soil fertility by promoting plant growth, providing protection against phytopathogens and resisting environmental stresses (15,16). Bacterial endophytes are other important class of microorganisms that help the host develop while using nutrients and shelter provided by the plant cells.…”

Section: Introductionmentioning

confidence: 99%

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

et al. 2022

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The use of fertilizers and chemical pesticides promotes significant improvements in crop development, but some problems and risks associated with them limit their application. An alternative is using biological inputs based on microorganisms, increasing production while combining efficiency and sustainability. Actinomycetes are a group of bacteria belonging to the phylum Actinobacteria, recently re-named Actinobacteriota. They represent important microbial communities in the soils with increasing agricultural applications, especially in the biological control of insect-pest and plant disease and in plant growth promotion. Studies report their promising use as microbiological inoculants by exploring mechanisms to improve plant development, such as biological nitrogen fixation, phosphate solubilization, production of phytohormones, and other biocompounds. In addition, many species produce metabolic pathways that generate high-value antibiotics, extracellular enzymes and secondary metabolites other than antimicrobials, with potential in the control of phytopathogenic fungi, insects, and nematodes. These actinomycetes could be used to formulate novel bioinoculants composed of spores and/or mycelium. Considering that the research in this field is up-and-coming, with significant economic and environmental impacts in the future, this review aims to group the most relevant works that explore the biodiversity of actinomycetes, helping to develop inoculants and biodefensives for more productive and conscious agriculture.

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Section: Introductionmentioning

confidence: 99%

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

et al. 2022

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“…A total of 232 bacterial families were identified in soil samples from the grape field. The bacterial communities were dominated by uncultured_bacterium_c_Subgroup_6 (9.9% in VvCon and 7.9% in VvTi), Nitrosomonadaceae (9.0% and 13.5%), and Gemmatimonadaceae (5.2% and 9.8%) ( Fig. 5b ).…”

Section: Resultsmentioning

confidence: 99%

“…The key to meeting the growing global population demand is to improve the efficiency of food production while reducing the negative impact on the environment ( 1 , 2 ). This can only be achieved by adopting sustainable and eco-friendly agricultural methods, such as applying new growth regulators, maintaining soil microecological balance, and incorporating probiotics ( 3 – 5 ).…”

Section: Introductionmentioning

confidence: 99%

Soil Microbial Communities Altered by Titanium Ions in Different Agroecosystems of Pitaya and Grape

Hou

et al. 2022

Microbiol Spectr

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“…However, there are many reports of actinomycetes isolated from other environments acting as effective plant biostimulants. These reports, extensively summarised by many authors [55][56][57], describe the isolation of actinobacteria, also from extreme environments, and their applications under stressful conditions (e.g., heavy metal stress and desertic, salty, and alkaline soil environments). Actinomycetes with a positive effect on plant growth and crop productivity belong to the plant growth-promoting actinobacteria (PGPA), a subgroup of the larger group of plant growth-promoting bacteria (PGPB).…”

Section: Productivity Of Crops Improvementmentioning

confidence: 99%

Actinomycetes from Caves: An Overview of Their Diversity, Biotechnological Properties, and Insights for Their Use in Soil Environments

et al. 2022

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The environmental conditions of caves shape microbiota. Within caves’ microbial communities, actinomycetes are among the most abundant bacteria. Cave actinomycetes have gained increasing attention during the last decades due to novel bioactive compounds with antibacterial, antioxidant and anticancer activities. However, their potential role in soil environments is still unknown. This review summarises the literature dealing with actinomycetes from caves, underlining for the first time their potential roles in soil environments. We provide an overview of their diversity and biotechnological properties, underling their potential role in soil environments applications. The contribution of caves’ actinomycetes in soil fertility and bioremediation and crops biostimulation and biocontrol are discussed. The survey on the literature show that several actinomycetes genera are present in cave ecosystems, mainly Streptomyces, Micromonospora, and Nocardiopsis. Among caves’ actinomycetes, Streptomyces is the most studied genus due to its ubiquity, survival capabilities, and metabolic versatility. Despite actinomycetes’ outstanding capabilities and versatility, we still have inadequate information regarding cave actinomycetes distribution, population dynamics, biogeochemical processes, and metabolisms. Research on cave actinomycetes needs to be encouraged, especially concerning environmental soil applications to improve soil fertility and health and to antagonise phytopathogens.

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Actinomycetes – The microbial machinery for the organic-cycling, plant growth, and sustainable soil health

Cited by 62 publications

References 43 publications

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

Soil Microbial Communities Altered by Titanium Ions in Different Agroecosystems of Pitaya and Grape

Actinomycetes from Caves: An Overview of Their Diversity, Biotechnological Properties, and Insights for Their Use in Soil Environments

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