Endophytic Actinobacteria and Their Interactions with Plant Host Systems

Gohel, Sangeeta D.; Sharma, Amit Kumar; Thakrar, Foram J.; Singh, Satya P.

doi:10.1007/978-981-10-5050-3_15

Cited by 6 publications

(3 citation statements)

References 108 publications

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“…Actinobacteria are known as plant-growth-promoting microorganisms with an antibacterial activity. They live as endophytes in various medicinal crops, such as horopito (Pseudowintera colorata), lucerne (Medicago sativa L), and Glycyrrhiza inflata Bat., and play a role in reducing environmental risks [73][74][75][76]. However, the relative abundance of Acidobacteria showed significant negative correlations with rhizome length and the number of rootlets.…”

Section: Correlation Analysis Between Growth Characteristics Of Wsg A...mentioning

confidence: 99%

Relationships between Rhizosphere Environments and Growth of 10-Year-Old Wild-Simulated Ginseng

et al. 2023

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Wild-simulated ginseng (WSG, Panax ginseng C.A. Meyer) must be cultivated in mountainous forests without installation of artificial facilities or treatment of chemicals. Because cultivation of these medicinal plants requires a long-term period, soil properties and rhizobacteria are known as major factors affecting their growth. This study was aimed to investigate correlations of soil bacterial community with soil chemical properties and growth of 10-year-old WSG. Most of the growth characteristics of WSG were higher in southern region than in northern regions, while leaflet length and leaflet width of WSG were higher in northern regions. In all WSG cultivation sites, the most dominant phyla were Proteobacteria and Acidobacteria in the bacterial community. In Principal component analysis (PCA), soil bacterial community was affected by exchangeable cations (calcium, magnesium), soil pH, total nitrogen, cation exchange capacity, and organic matter. Soil pH was the most effective factor in this study because all studied sites were acidic soils. In spearman’s coefficient analysis, 9 of 13 growth characteristics of WSG showed significantly positive correlation with the relative abundance of Actinobacteria, while rhizome length and number of rootlets showed significant negative correlations with population of Acidobacteria. Therefore, growth characteristics of WSG in different cultivation sites can be affected by various soil environmental factors. These results can help foresters find suitable cultivation sites for WSG.

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Section: Correlation Analysis Between Growth Characteristics Of Wsg A...mentioning

confidence: 99%

Relationships between Rhizosphere Environments and Growth of 10-Year-Old Wild-Simulated Ginseng

et al. 2023

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“…Sponges (phylum: Porifera) and corals (phylum: Cnidaria) are the most predominant source of marine natural products. Ascidians (phylum: Chordata) have been classified as the second predominant source of natural products [9,10]. Seaweeds-associated bacterium produces a diverse range of biologically active compounds that specifically target fouling organisms and also show antifungal and antibacterial effects [11].…”

Section: Introductionmentioning

confidence: 99%

Actinobacteria Associated with Marine Invertebrates: Diversity and Biological Significance

Majithiya¹,

Gohel²

2022

Actinobacteria - Diversity, Applications and Medical Aspects

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The ocean harbors a wide diversity of beneficial fauna offering an enormous resource for novel compounds, and it is classified as the largest remaining reservoir of natural molecules to be evaluated for biological activity. The metabolites obtained from marine invertebrate-associated actinobacteria have different characteristics compared to terrestrial actinobacteria as marine environments are exigent and competitive. Actinobacteria produce a wide range of secondary metabolites, such as enzymes, antibiotics, antioxidative, and cytotoxic compounds. These allelochemicals not only protect the host from other surrounding pelagic microorganisms but also ensure their association with the host. The harnessing of such metabolites from marine actinobacteria assures biotechnological, agricultural, and pharmaceutical applications.

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“…Additionally, biofertilizers improve plant growth by enriching soil fertility by the release of plant growth hormones, antibiotic production, and organic matter biodegradation [17]. Previously, the potential of endophytic actinobacteria to produce novel compounds with agricultural and pharmaceutical importance was reported [18]. These microbes are considered an important source of natural molecules of agricultural importance.…”

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confidence: 99%

Medicinal plant‐associated rhizobacteria enhance the production of pharmaceutically important bioactive compounds under abiotic stress conditions

Vaghela

Gohel

2022

J Basic Microbiol

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Interest in cultivating valuable medicinal plants to collect bioactive components has risen extensively over the world to meet the demands of health care systems, pharmaceuticals, and food businesses. Farmers commonly use chemical fertilizers to attain maximal biomass and yield, which have negative effects on the growth, development, and bioactive constituents of such medicinally important plants. Because of its low cost, environmentally friendly behavior, and nondestructive impact on soil fertility, plant health, and human health, the use of beneficial rhizobial microbiota is an alternative strategy for increasing the production of useful medicinal plants under both standard and stressed conditions. Plant growth‐promoting rhizobacteria (PGPR) associated with medicinal plants belong to the genera Azotobacter, Acinetobacter, Bacillus, Brevibacterium, Burkholderia, Exiguobacterium, Pseudomonas, Pantoea, Mycobacterium, Methylobacterium, and Serratia. These microbes enhance plant growth parameters by producing secondary metabolites, including enzymes and antibiotics, which help in nutrient uptake, enhance soil fertility, improve plant growth, and protect against plant pathogens. The role of PGPR in the production of biomass and their effect on the quality of bioactive compounds (phytochemicals) is described in this review. Additionally, the mitigation of environmental stresses including drought stress, saline stress, alkaline stress, and flooding stress to herbal plants is illustrated.

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Endophytic Actinobacteria and Their Interactions with Plant Host Systems

Cited by 6 publications

References 108 publications

Relationships between Rhizosphere Environments and Growth of 10-Year-Old Wild-Simulated Ginseng

Relationships between Rhizosphere Environments and Growth of 10-Year-Old Wild-Simulated Ginseng

Actinobacteria Associated with Marine Invertebrates: Diversity and Biological Significance

Medicinal plant‐associated rhizobacteria enhance the production of pharmaceutically important bioactive compounds under abiotic stress conditions

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