Hormones and hormone-like substances of microorganisms: A review

Цавкелова, Е. А.; Klimova, S. Yu.; Чердынцева, Т. А.; Netrusov, A. I.

doi:10.1134/s000368380603001x

Cited by 124 publications

(96 citation statements)

References 41 publications

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“…Growth stimulation by this hormone has been observed for other bacteria including Azotobacter, Pseudomonas and Lactobacillus. 23 At higher concentrations, exogenous GA increased the bacterial cellulose wet weight ( Figure 2B) and yield ( Figure 2C). Furthermore, GA had profound effect on the crystallinity of G. xylinus pellicles, depending on concentration.…”

Section: Discussionmentioning

confidence: 99%

“…21 At high concentrations, IAA has been shown to reduce root growth. 22 Gibberellins, a large class of phytohormone comprised of more than one hundred compounds, 23 have been implicated in the stimulation of both cell division and cell elongation in plant stems 22,24 and serves an important role in primary root growth by regulating cellulose deposition. 25 In grapes, exogenous application of gibberellins induce fruit setting and fruit growth.…”

Section: Introductionmentioning

confidence: 99%

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The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

Qureshi

Sohail

Latos

et al. 2013

Acetic Acid Bacteria

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Gluconacetobacter xylinus is a plant-associated bacterium best studied for its cellulose production. Bacterial cellulose is important in facilitating plant-microbe interactions but little is known about the effect that exogenous phytohormones have on bacterial cellulose synthesis or the growth of G. xylinus. We characterized the growth, development and effect on pellicle characteristics caused by exogenous indole-3-acetic acid (IAA), gibberellic acid (GA), abscisic acid (ABA) and zeatin (Z) over a range of concentrations (1 nM to 100 μM). These phytohormones are plant growth regulators known to be involved plant development including fruit ripening and stress tolerance. Each of these hormones stimulated G. xylinus growth and influenced its pellicle characteristics. Exogenous IAA had the greatest effect on G. xylinus pellicles. Growth in IAA produced thin pellicles with very little cellulose. In general, pellicle wet weight was inversely proportional to the bacterial cellulose yield when cultures were grown in the presence of ABA, suggesting ABA influenced pellicle density and hydration. The crystallinity index, CI (IR) of cellulose produced in the presence of each phytohormone over a variety of concentrations was determined by Fourier transform infrared spectroscopy. The observed effect on cellulose crystallinity was concentration and hormone dependent. GA caused the greatest alterations in crystallinity with the highest CI (IR)=0.94 at 1 μM and the lowest CI (IR)=0.47 at 500 nM. Endogenous production of hormones by G. xylinus was investigated by high performance liquid chromatography of extracts prepared from both cell pellets and culture supernatants. We found G. xylinus synthesized GA, ABA and Z but did not produce IAA.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

Qureshi

Sohail

Latos

et al. 2013

Acetic Acid Bacteria

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“…The L-DOPA (precursor of dopamine) content of broad beans is so high that 250 g of cooked broad beans per day has successfully been used in humans to treat the symptoms of Parkinson's disease [60,62]. Dopamine has also been detected in fungi such as Saccharomyces cerevisiae and Penicillium chrysogenum [63]. Many of the compounds isolated are not analogues of vertebrate hormones, they are chemically identical.…”

Section: Why Should Microbes Recognise Our Stress Hormones?mentioning

confidence: 99%

Microbial Endocrinology

Sharaff

Freestone

2011

Open Life Sciences

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Microbial Endocrinology is a new microbiology research discipline that represents the intersection of microbiology and endocrinology with neurophysiology. It has as its main tenet that through their long co-existence with animals and plants, micro-organisms have evolved sensory systems for detecting host-associated hormones. These sensing systems allow the microbe to determine that they are within proximity of a suitable host, and that is time to initiate expression of genes involved in host colonisation. Microbial Endocrinology therefore provides a new paradigm with which to examine and understand the interactions of micro-organisms with their host under conditions present in both health and disease. This article will focus on microbial interactions with the fight and flight family of catecholamine stress hormones.

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“…Butyrate is synthesised by colonic bacteria and has been shown to enhance transcription of tyrosine hydroxylase, the rate-limiting enzyme in catecholamine biosynthesis (Patel et al 2005). Bacillus spp., Proteus vulgaris, Serratia marcescens, and S. aureus can directly synthesise catecholamines that are exact analogues of the mammalian hormones (Tsavkelova et al 2006). Asano et al (2012) found that commensal gut bacteria express b-glucuronidase enzymes, which are able to generate free NE and dopamine via the cleavage of their pharmacologically inactive conjugated forms.…”

Section: Host Stress Changes the Behaviour Of The Gut Microbiomementioning

confidence: 99%

Microbial endocrinology: host–bacteria communication within the gut microbiome

Sandrini¹,

Aldriwesh²,

Alruways³

et al. 2015

Journal of Endocrinology

112

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The human body is home to trillions of micro-organisms, which are increasingly being shown to have significant effects on a variety of disease states. Evidence exists that a bidirectional communication is taking place between us and our microbiome co-habitants, and that this dialogue is capable of influencing our health in a variety of ways. This review considers how host hormonal signals shape the microbiome, and what in return the microbiome residents may be signalling to their hosts.

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Hormones and hormone-like substances of microorganisms: A review

Cited by 124 publications

References 41 publications

The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

Microbial Endocrinology

Microbial endocrinology: host–bacteria communication within the gut microbiome

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