4‐Hydroxyphenethyl alcohol — a new cytokinin‐like substance from the phototrophic purple bacterium <i>Rhodospirillum rubrum</i> 1R

Serdyuk, O. P.; Smolygina, L. D.; Muzafarov, Eugine N.; Adanin, V. M.; Arinbasarov, Michael U.

doi:10.1016/0014-5793(95)00430-h

Cited by 25 publications

(8 citation statements)

References 7 publications

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“…PSU-F14 y PSU-F135, y Nigrospora sphaerica (34)(35)(36). Múltiples actividades biológicas se les han atribuido incluyendo antioxidante e inhibidores de citoquinina (37)(38)(39). El tirosol es una molécula de comunicación utilizada por el hongo Candida albicans favoreciendo por medio de QS el inicio de la filamentación (40)(41)(42) pero no se había descrito actividad inhibitoria del quorum sensing en bacterias aunque si su producción, como es el caso de Bacillus subtilis KMM 3427 (43), aunque compuestos similares (orto-dihidroxilados) han sido patentados recientemente con este fin (44).…”

Section: Discussionunclassified

Búsqueda de bacterias marinas como fuente de inhibidores de quorum sensing (iqs): primer estudio químico de Oceanobacillus profundus (RKHC-62B)

Martínez-Matamoros¹,

FONSECA²,

Duque³

et al. 2016

Vitae

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RESUMENAntecedentes: Los productos naturales aislados de microorganismos marinos han demostrado tener un amplio rango de actividades biológicas incluyendo inhibidores de quorum sensing. Objetivos: Estudiamos quince cepas bacterianas del phylum Firmicutes aisladas del coral blando Antillogorgia elisabethae que fueron evaluadas como una nueva fuente sostenible de compuestos inhibidores de quorum sensing (IQS). Métodos: Se prepararon cultivos en cuatro medios diferentes y extraídos usando una resina no iónica. Todos los extractos fueron probados con el fin de establecer su actividad inhibitoria de quorum sensing (IQS) usando Chromobacterium violaceum ATCC 31532 como biosensor. Los extractos activos fueron fraccionados mediante cartuchos RP-18. Cada fracción fue evaluada mediante bioensayo y analizada por HPLC. Resultados: Las fracciones metanólicas de Jeotgalicoccus halophilus y Oceanobacillus profundus fueron las más activas, lo cual sugiere que los compuestos no polares pueden ser los responsables de esta actividad. Conclusiones: El estudio químico del extracto orgánico de O. profundus cultivado en medio LBS permitió aislar los compuestos tirosol (1) y acetato de tirosol (2) como los responsables de la actividad IQS. Palabras clave: Productos naturales marinos, Microorganismos marinos, Jeotgalicoccus halophilus, Oceanobacillus profundus, Compuestos inhibidores de quorum sensing. ABSTRACTBackground: Natural products isolated from marine microorganisms have demonstrated a wide range of biological activities included quorum sensing inhibitors. Objectives: We study fifteen marine Firmicutes bacterial strains isolated from the Caribbean soft coral Antillogorgia elisabethae that were evaluated as a novel and sustainable source of quorum sensing inhibitor compounds. Methods: Cultures were made in four different culture media and further extracted using a non-ionic resin. All these extracts were tested in order to establish its quorum sensing inhibition (QSI) activity using Chromobacterium violaceum ATCC 31532. The active extracts were fractionated by RP-18 cartridge. Each fraction was tested and evaluated for its composition by HPLC-PDA. Results: Methanol fractions of Jeotgalicoccus halophilus and Oceanobacillus profundus were the most active ones, suggesting that non-polar compounds could be the responsible for the QSI activity of the bacterial extracts here tested. Conclusions: The chemical study

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Section: Discussionunclassified

Búsqueda de bacterias marinas como fuente de inhibidores de quorum sensing (iqs): primer estudio químico de Oceanobacillus profundus (RKHC-62B)

Martínez-Matamoros¹,

FONSECA²,

Duque³

et al. 2016

Vitae

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“…For example, the fungus Alternaria sp. and the bacterium Rhodospirillum rubrum produce previously unknown plant growth regulators altechromone and 4‐hydroxyphenethyl alcohol, respectively (Kimura et al 1992, Serdyuk et al 1995). In this study, it was shown that some bud endophytes of Scots pine produce adenine and adenine derivatives.…”

Section: Discussionmentioning

confidence: 99%

“…The cytokinins were extracted as described by Serdyuk et al (1995). The acidic aqueous solution was adjusted to pH 8 with 2 N NaOH and extracted three times with water‐saturated n ‐butanol.…”

Section: Methodsmentioning

confidence: 99%

Bud endophytes of Scots pine produce adenine derivatives and other compounds that affect morphology and mitigate browning of callus cultures

Pirttilä

Joensuu²,

Pospiech

et al. 2004

Physiologia Plantarum

101

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Endophytes are found in meristematic bud tissues of Scots pine (Pinus sylvestris L.) especially prior to growth, which would suggest their involvement in growth of the bud. To test this hypothesis, production of phytohormones by two bacterial (Methylobacterium extorquens, Pseudomonas synxantha) and one fungal endophyte (Rhodotorula minuta) was studied by mass spectrometry. The most common gibberellins, auxins, or cytokinins were not detected in the fractions studied. Instead, M. extorquens and R. minuta produced adenine derivatives that may be used as precursors in cytokinin biosynthesis. A plant tissue culture medium was conditioned with the endophytes, and pine tissue cultures were started on the media. Tetracycline inhibited callus production, which was restored on the endophyte-conditioned media. In addition, conditioning mitigated browning of the Scots pine explants. However, a decrease in tissue size was observed on the endophyte-conditioned media. Addition of adenosine monophosphate in the plant culture medium restored callus production and increased growth of the tissues, but had no effect on browning. Therefore, production of adenine ribosides by endophytes may play some role in the morphological effect observed in the pine tissues.

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“…Cytokinins represent another class of phytohormones produced by micro‐organisms. Their production by plant‐associated microbes, as well as by phototrophic micro‐organisms, has been well documented (Arshad & Frankenberger 1991; Serdyuk et al . 1995), although the endogenous production of cytokinin by plants remains controversial (Holland 1997).…”

Section: How Rhizobacteria Promote Plant Growth: Direct Impact On Plamentioning

confidence: 99%

Tales from the underground: molecular plant-rhizobacteria interactions

Cartieaux

Nussaume

Robaglia

2003

Plant, Cell &Amp; Environment

378

181

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Colonization of the rhizosphere by micro-organisms results in modifications in plant growth and development. This review examines the mechanisms involved in growth promotion by plant growth-promoting rhizobacteria which are divided into indirect and direct effects. Direct effects include enhanced provision of nutrients and the production of phytohormones. Indirect effects involve aspects of biological control: the production of antibiotics and ironchelating siderophores and the induction of plant resistance mechanisms. The study of the molecular basis of growth promotion demonstrated the important role of bacterial traits (motility, adhesion and growth rate) for colonization. New research areas emerge from the discovery that molecular signalling occurs through plant perception of eubacterial flagellins. Recent perspectives in the molecular genetics of cross-talking mechanisms governing plant-rhizobacteria interactions are also discussed.

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4‐Hydroxyphenethyl alcohol — a new cytokinin‐like substance from the phototrophic purple bacterium Rhodospirillum rubrum 1R

Cited by 25 publications

References 7 publications

Búsqueda de bacterias marinas como fuente de inhibidores de quorum sensing (iqs): primer estudio químico de Oceanobacillus profundus (RKHC-62B)

Búsqueda de bacterias marinas como fuente de inhibidores de quorum sensing (iqs): primer estudio químico de Oceanobacillus profundus (RKHC-62B)

Bud endophytes of Scots pine produce adenine derivatives and other compounds that affect morphology and mitigate browning of callus cultures

Tales from the underground: molecular plant-rhizobacteria interactions

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