Bioactivity of intra and extracellular substances from cyanobacteria and lactic acid bacteria on “wood blue stain” fungi

Zulpa, Gloria; Zaccaro, M. C.; Boccazzi, F.; Parada, José; Storni, M.

doi:10.1016/s1049-9644(03)00015-x

Cited by 48 publications

(27 citation statements)

References 7 publications

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“…However, the potential activity of cyanobacteria to inhibit certain soilborne diseases needs further investigation before they can be accepted as biocontrol agents for agriculture. A further advantage of these cyanobacterial strains is that they are known to produce a wide range of plant growth regulators such as abscisic acid, ethylene, jasmonic acid, auxin, and cytokinin-like substances as well as the cytokinin isopentenyl adenine (Ördög and Pulz, 1996; Strik et al, 1999), and these substances can also influence fungal growth (Zulpa et al, 2003). …”

Section: Resultsmentioning

confidence: 99%

Screening of Cyanobacteria (Blue-Green algae) from Rice Paddy Soil for Antifungal Activity against Plant Pathogenic Fungi

Kim

2006

Mycobiology

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Soil cyanobacteria isolated from the rice paddy fields of 10 different locations across Korea were evaluated by agar plate diffusion test for antifungal activity. Aqueous, petroleum ether, and methanol extracts from one hundred and forty two cyanobacterial strains belonging to the 14 genera were examined for antifungal properties against seven phytopathogenic fungi causing diseases in hot pepper (Capsicum annuum L). Of total cyanobacteria, nine cyanobacteria (6.34%) exhibited antifungal effects. The nine cyanobacteria selected with positive antifungal activities were two species of Oscillatoria, two of Anabaena, three of Nostoc, one of Nodularia, and one of Calothrix. Alternaria alternata and Botrytis cinerea were inhibited by nine and eight species of cyanobacteria, respectively. Rhizopus stolonifer was suppressed by only methanol extract of Nostoc commune FK-103. In particular, Nostoc commune FK-103 and Oscillatoria tenuis FK-109 showed strong antifungal activities against Phytophthora capsici. Their antifungal activity at the late exponential growth phase is related to the growth temperature and not associated with the growth parameters such as cell biomass and chlorophyll-α concentration. The high inhibition levels of antibiotics were 22.5 and 31.8 mm for N. commune FK-103 and O. tenuis FK-109, respectively. The optimal temperature for antibiotic productivity was 35℃.

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Section: Resultsmentioning

confidence: 99%

Screening of Cyanobacteria (Blue-Green algae) from Rice Paddy Soil for Antifungal Activity against Plant Pathogenic Fungi

Kim

2006

Mycobiology

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“…Antifungal activity of M. tenera also has been investigated. It was shown that the biomass of M. tenera inhibited growth of the fungus Sphaeropsis sapinea (Zulpa et al 2003) and methanol extract of the species exhibited significant antibacterial and antifungal activity against Pseudomonas aeruginosa, Proteus vulgaris, and Aspergillus niger (Prashantkumar et al 2006). Hajimahmoodi et al (2010) presented antioxidant effects of both cells and extracellular substances of the algae using FRAP and DPPH-HPLC assays.…”

Section: Introductionmentioning

confidence: 99%

Microalgal transformation of progesterone by the terrestrial-isolated cyanobacterium Microchaete tenera

et al. 2011

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A large number of microorganisms including various microalgal strains are able to convert steroid compounds into useful metabolites. In the present study, the ability of Microchaete tenera, a rice paddy field-isolated microalga, was investigated for biotransformation of progesterone. The incubation was carried out at 25°C under continuous illumination in the present of 0.25 gL −1 of progesterone. After 5 days incubation of the microalga in BG-11 liquid medium, the broth was extracted and the products were purified by the aid of chromatographic methods. Structure elucidation of the metabolites was performed by spectral data ( 13 C NMR, 1 H NMR, FTIR, and MS) and physical constants (melting points and optical rotations). Eventually, four major steroids including 20β-hydroxypregn-4-en-3-one, 20α-hydroxypregn-4-en-3-one, 6β-hydroxypregn-4-en-3,20-dione and 6α-hydroxypregn-4-en-3,20-dione were the results of this biotransformation. The study also showed that the best concentration of starting material, temperature, photoregime, and the influence of CO 2 partial pressure on the production of bioconverted metabolites were 0.25 gL −1 , 25°C, continuous light and 2.0±0.1% (v/v), respectively. Highest concentrations of all biotransformed metabolites were obtained in the 5th day.

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“…Les effets stimulateurs de tels types de métabolites sont, cependant, largement démontrés chez d'autres cyanobactéries [26,31,34,44]. Les auteurs attribuent ces effets à la capacité de grand nombre de cyanobacté-ries de produire des phytohormones semblables à celles des plantes, dont certaines sont identifiées comme étant de type auxines ou cytokinines, d'où leurs nominations d'auxin-like ou de cytokin-like.…”

Section: Discussionunclassified

Activités biologiques des métabolites excrétés par la cyanobactérie filamenteuse Arthrospira platensis

Trabelsi

Ouada

Bassa³

2010

Phytothérapie

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Bioactivity of intra and extracellular substances from cyanobacteria and lactic acid bacteria on “wood blue stain” fungi

Cited by 48 publications

References 7 publications

Screening of Cyanobacteria (Blue-Green algae) from Rice Paddy Soil for Antifungal Activity against Plant Pathogenic Fungi

Screening of Cyanobacteria (Blue-Green algae) from Rice Paddy Soil for Antifungal Activity against Plant Pathogenic Fungi

Microalgal transformation of progesterone by the terrestrial-isolated cyanobacterium Microchaete tenera

Activités biologiques des métabolites excrétés par la cyanobactérie filamenteuse Arthrospira platensis

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