Streptomyces Exploration: Competition, Volatile Communication and New Bacterial Behaviours

Jones, Stephanie E.; Elliot, Marie A.

doi:10.1016/j.tim.2017.02.001

Cited by 74 publications

(57 citation statements)

References 82 publications

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“…Hence, we conjecture the indispensable volatile organic compound (VOC)-mediated interactions (VMI) among the ecotype species colonizing a particular growth matrix. Multiple studies have highlighted the VMI between the moldprokaryote [5], mold-plants [6,7], and prokaryote-prokaryote species [8]; however, the role of VOCs in shaping moldmold interactions has rarely been addressed.…”

Section: Introductionmentioning

confidence: 99%

Intraspecies Volatile Interactions Affect Growth Rates and Exometabolomes in Aspergillus oryzae KCCM 60345

Singh

Lee

2018

Journal of Microbiology and Biotechnology

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Volatile organic compounds (VOCs) are increasingly been recognized as the chemical mediators of mold interactions, shaping their community dynamics, growth, and metabolism. Herein, we selectively examined the time-correlated (0 D-11 D, where D = incubation days) effects of intraspecies VOC-mediated interactions (VMI) on KCCM 60345 (S1), following co-cultivation with partner strain KACC 44967 (S2), in a specially designed twin plate assembly. The comparative evaluation of S1 (S1 subjected to VMI with S2) and its control (S1) showed a notable disparity in their radial growth (S1 < S1) at 5 D, protease activity (S1 > S1) at 3-5 D, amylase activity (S1 < S1) at 3-5 D, and antioxidant levels (S1 > S1) at 3 D. Furthermore, we observed a distinct clustering pattern for gas chromatography-time of flight-mass spectrometry datasets from 5 D extracts of S1 and S1 in principle component analysis (PC1: 30.85%; PC2: 10.31%) and partial least squares discriminant analysis (PLS-DA) (PLS1: 30.77; PLS2: 10.15%). Overall, 43 significantly discriminant metabolites were determined for engendering the metabolic variance based on the PLS-DA model (VIP > 0.7, < 0.05). In general, a marked disparity in the relative abundance of amino acids (S1 > S1) at 5 D, organic acids (S1 > S1) at 5 D, and kojic acid (S1 < S1) at 5-7 D were observed. Examining the headspace VOCs shared between S1 and S2 in the twin plate for 5 D incubated samples, we observed the relatively higher abundance of C-8 VOCs (1-octen-3-ol, (5Z)-octa-1,5-dien-3-ol, 3-octanone, 1-octen-3-ol acetate) having known semiochemical functions. The present study potentially illuminates the effects of VMI on commercially important growth and biochemical phenotypes with subtle details of altered metabolomes.

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Section: Introductionmentioning

confidence: 99%

Intraspecies Volatile Interactions Affect Growth Rates and Exometabolomes in Aspergillus oryzae KCCM 60345

Singh

Lee

2018

Journal of Microbiology and Biotechnology

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“…Moreover, summed to the Streptomyces classical growth cycle (hyphae growth, aerial hyphae development, spore formation), the mechanism of "exploratory growth" has great potential in agriculture. This mechanism provides Streptomyces with the possibility of colonizing new environments, without compromising resources in terms of sporulation [50].…”

Section: Discussionmentioning

confidence: 99%

“…Most Streptomyces are non-pathogenic. Within their colonization strategies, they are also known now to be able to traverse solid surfaces [50], and they are prolific producers of versatile secondary metabolites. Compared to other microorganisms in the soil, members of the genus Streptomyces seem to be superior candidates for bioremediation and bio-reclamation due to their high tolerance and adaptability to different environmental stress conditions.…”

Section: Streptomyces Applicationsmentioning

confidence: 99%

Potential of Bioremediation and PGP Traits in Streptomyces as Strategies for Bio-Reclamation of Salt-Affected Soils for Agriculture

et al. 2020

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Environmental limitations influence food production and distribution, adding up to global problems like world hunger. Conditions caused by climate change require global efforts to be improved, but others like soil degradation demand local management. For many years, saline soils were not a problem; indeed, natural salinity shaped different biomes around the world. However, overall saline soils present adverse conditions for plant growth, which then translate into limitations for agriculture. Shortage on the surface of productive land, either due to depletion of arable land or to soil degradation, represents a threat to the growing worldwide population. Hence, the need to use degraded land leads scientists to think of recovery alternatives. In the case of salt-affected soils (naturally occurring or human-made), which are traditionally washed or amended with calcium salts, bio-reclamation via microbiome presents itself as an innovative and environmentally friendly option. Due to their low pathogenicity, endurance to adverse environmental conditions, and production of a wide variety of secondary metabolic compounds, members of the genus Streptomyces are good candidates for bio-reclamation of salt-affected soils. Thus, plant growth promotion and soil bioremediation strategies combine to overcome biotic and abiotic stressors, providing green management options for agriculture in the near future.

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“…Streptomycetes are known to produce pyrazines, i.e., volatile organic compounds well-known for their antimicrobial activities. These compounds are used as competition tools against other microorganisms that do not reside directly adjacent to each other [29,30]. However, volatiles from AcH 1003 did not show any effects on the mycelial extension rate of the P. indica.…”

Section: Effect Of the Soil Bacteria On The Growth Of P Indicamentioning

confidence: 99%

Interaction with Soil Bacteria Affects the Growth and Amino Acid Content of Piriformospora indica

2020

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Exploration of the effect of soil bacteria on growth and metabolism of beneficial root endophytic fungi is relevant to promote favorable associations between microorganisms of the plant rhizosphere. Hence, the interaction between the plant-growth-promoting fungus Piriformospora indica and different soil bacteria was investigated. The parameters studied were fungal growth and its amino acid composition during the interaction. Fungus and bacteria were confronted in dual cultures in Petri dishes, either through agar or separated by a Perspex wall that only allowed the bacterial volatiles to be effective. Fungal growth was stimulated by Azotobacter chroococcum, whereas Streptomyces anulatus AcH 1003 inhibited it and Streptomyces sp. Nov AcH 505 had no effect. To analyze amino acid concentration data, targeted metabolomics was implemented under supervised analysis according to fungal-bacteria interaction and time. Orthogonal partial least squares-discriminant analysis (OPLS-DA) model clearly discriminated P. indica–A. chroococcum and P. indica–S. anulatus interactions, according to the respective score plot in comparison to the control. The most observable responses were in the glutamine and alanine size groups: While Streptomyces AcH 1003 increased the amount of glutamine, A. chroococcum decreased it. The fungal growth and the increase of alanine content might be associated with the assimilation of nitrogen in the presence of glucose as a carbon source. The N-fixing bacterium A. chroococcum should stimulate fungal amino acid metabolism via glutamine synthetase-glutamate synthase (GS-GOGAT). The data pointed to a stimulated glycolytic activity in the fungus observed by the accumulation of alanine, possibly via alanine aminotransferase. The responses toward the growth-inhibiting Streptomyces AcH 1003 suggest an (oxidative) stress response of the fungus.

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Streptomyces Exploration: Competition, Volatile Communication and New Bacterial Behaviours

Cited by 74 publications

References 82 publications

Intraspecies Volatile Interactions Affect Growth Rates and Exometabolomes in Aspergillus oryzae KCCM 60345

Intraspecies Volatile Interactions Affect Growth Rates and Exometabolomes in Aspergillus oryzae KCCM 60345

Potential of Bioremediation and PGP Traits in Streptomyces as Strategies for Bio-Reclamation of Salt-Affected Soils for Agriculture

Interaction with Soil Bacteria Affects the Growth and Amino Acid Content of Piriformospora indica

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