Effect of an antibiotic fromOscillatoria late-virens on growth, photosynthesis, and toxicity ofmicrocystis aeruginosa

Bagchi, Suvendra Nath; Chauhan, Vikas; Marwah, J. B.

doi:10.1007/bf01577380

Cited by 26 publications

(8 citation statements)

References 24 publications

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“…produced and released allelopathically active compounds inhibiting other cyanobacteria and chlorophytes but not heterotrophic organisms (Chauhan et al, 1992;Bagchi et al, 1993). Later, a lipophilic low molecular inhibitor of photosystem I1 from Oscillatoria late-virens was isolated (Bagchi et al, 1993;Bagchi, 1995).…”

Section: Cyanobacteriamentioning

confidence: 99%

Allelopathy of Aquatic Autotrophs

Gross¹

2003

Critical Reviews in Plant Sciences

536

355

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Allelopathy in aquatic environments may provide a competitive advantage to angiosperms, algae, or cyanobacteria in their interaction with other primary producers. Allelopathy can influence the competition between different photoautotrophs for resources and change the succession of species, for exarnple, in phytoplankton cornmunities. Field evidence and laboratory studies indicate that allelopathy occurs in all aquatic habitats (marine and freshwater), and that ail prirnary producing organisms (cyanobacteria, micro-and macroalgae as well as angiospenns) are capable of producing and releasing allelopathically active compounds. Although allelopathy also includes positive (stimulating) interactions, the majority of studies describe the inhibitory activity of ailelopathicaily active compounds. Different mechanisms operate depending on whether allelopathy takes place in the Open water (pelagic zone) or is Substrate associated (benthic habitats). Allelopathical interactions are especiaily common in fully aquatic species, such as submersed macrophytes or benthic algae and cyanobacteria. The prevention of shading by epiphytic and planktonic primary producers and the competition for space may be the ultimate cause for allelopathical interactions. Aquatic ailelochemicals often target multiple physiological processes. The inhibition of photosynthesis of competing primary producers seems tobe a frequent mode of action. Multiple biotic and abiotic factors determine the strength of allelopathic interactions. Bacteria associated with the donor or target organism can metabolize excreted aiielochemicals. Frequently, the impact of surplus or limiting nutrients has been shown to affect the overail production of allelochemicals and their effect on target species. Similarities and differences of ailelopathic interactions in marine and freshwater habitats as well as between the different types of producing organisms are discussed.

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Section: Cyanobacteriamentioning

confidence: 99%

Allelopathy of Aquatic Autotrophs

Gross¹

2003

Critical Reviews in Plant Sciences

536

355

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“…L. wollei has been shown to produce various saxitoxins and derivatives, collectively called paralytic shellfish toxins, which are highly potent neurotoxic alkaloids that are known to inhibit nerve conduction and muscle contraction by blocking sodium channels (Jaiswal et al, 2008;Mihali et al, 2011). In addition, Chauhan et al (1992) and Bagchi et al (1993) found that filamentous cyanobacterium Oscillatoria sp. produced and released allelopathic compounds that inhibited other cyanobacteria and chlorophytes.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Effects of Pistia stratiotes (Araceae) and Lyngbya wollei Farlow ex Gomont (Oscillariaceae) on Seed Germination and Root Growth

Bhadha¹,

Lang²,

Alvarez³

et al. 2014

SAR

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Pistia stratiotes and Lyngbya wollei are the two most common aquatic weeds that flourish in farm canals within the Everglades Agricultural Area of Florida. Identifying a useful application of these weeds would not only address important environmental concerns, but would also be an incentive for farmers to harvest it. The objective of this study was to determine use of P. stratiotes and L. wollei as soil amendments for stimulation of seed germination and root growth in different plant species. The effects of different rates of dried and grounded P. stratiotes and L. wollei on germination and root length of snap bean, corn, sorghum, common lambsquarters, and rice were evaluated using a controlled petri-dish incubation bioassay study. Overall, both amendments had a negative allelopathic effect on germination of all species. The highest reduction in germination of 80 and 43% by P. stratiotes and L. wollei respectively was observed on corn. Rice was the most tolerant to allelopathic effects that emanated from both amendments. There was a significant positive increase in rice root length in response to P. stratiotes rate over the two-week period. This study shows that P. stratiotes can be used as a potential bio-fertilizer to stimulate early growth of rice.

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“…The activity of this compound has been shown to be associated with the oxidizing side of the quinone-B electron acceptor but not with the DCMU binding domain (Gleason et al 1986;Gleason 1990). This was also the site for the algicidial activity found in the bloom-forming Oscillatoria late-virens (Bagchi et al 1993). …”

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confidence: 99%

Inhibition of growth and photosynthesis of the dinoflagellate Peridinium gatunense by Microcystis sp. (cyanobacteria): A novel allelopathic mechanism

Sukenik

Eshkol

Livne

et al. 2002

Limnology & Oceanography

173

100

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We describe a novel allelopathic interaction whereby the cyanobacterium Microcystis sp. inhibits photosynthesis in the freshwater dinoflagellate Peridinium gatunense by abolishing its internal carbonic anhydrase activity. Our analysis indicated a positive correlation between the winter presence of Microcystis and the timing of the annual spring bloom of Peridinium in Lake Kinneret (Sea of Galilee, Israel). Microcystis severely inhibited the growth of Peridinium in mixed laboratory cultures. This was attributed to the excretion of allelopathic substances rather than to successful competition for nutrients. Microcystis-free spent medium (MFSM) inhibited steady-state photosynthesis of Peridinium, as indicated by the reduced rate of oxygen evolution and by a suppressed fluorescence signal. Boosting the inorganic carbon concentration to 25 mmol L Ϫ1 , i.e., 10-fold higher than essential to saturate photosynthesis in the absence of MFSM, partially restored the photosynthetic capacity. MFSM-treated Peridinium cells accumulated a larger internal inorganic carbon pool concomitantly with reduced accumulation of photosynthetic products. The MFSM slowed the hydration rate of CO 2 (assessed from the rate of 18 O exchange between 13 C 18 O 2 and water), indicating that the activity of an internal carbonic anhydrase was severely depressed. Although the nature of the active component in the MFSM that inhibits CA activity has yet to be identified, the ecological consequences of its excretion to the water body are emerging as a potent allelopathic substance that may control the development of phytoplankton competitors. We propose that its allelopathic activity could control the fate and succession of the P. gatunense bloom in Lake Kinneret.

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Effect of an antibiotic fromOscillatoria late-virens on growth, photosynthesis, and toxicity ofmicrocystis aeruginosa

Cited by 26 publications

References 24 publications

Allelopathy of Aquatic Autotrophs

Allelopathy of Aquatic Autotrophs

Allelopathic Effects of Pistia stratiotes (Araceae) and Lyngbya wollei Farlow ex Gomont (Oscillariaceae) on Seed Germination and Root Growth

Inhibition of growth and photosynthesis of the dinoflagellate Peridinium gatunense by Microcystis sp. (cyanobacteria): A novel allelopathic mechanism

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