Influence of Biotic and Abiotic Factors on the Allelopathic Activity of the Cyanobacterium Cylindrospermopsis raciborskii Strain LEGE 99043

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Jorge T Antunes (Author) Other; Pedro N Leao (Author) Other; Vitor M Vasconcelos (Author) FCUP

Journal

Title: Microbial Ecology

Vol. 64

Pages: 584-592

ISSN: 0095-3628

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 26 Citations

Scopus - 27 Citations

Scientific classification

FOS: Natural sciences > Biological sciences

Other information

Authenticus ID: P-002-559

DOI: 10.1007/s00248-012-0061-7

Abstract (EN): Allelopathy is considered to be one of the factors underlying the global expansion of the toxic cyanobacterium Cylindrospermopsis raciborskii. Although the production and release of allelopathic compounds by cyanobacteria is acknowledged to be influenced by environmental parameters, the response of C. raciborskii remains generally unrecognized. Here, the growth and allelopathic potential of C. raciborskii strain LEGE 99043 towards the ubiquitous microalga Ankistrodesmus falcatus were analyzed under different biotic and abiotic conditions. Filtrates from C. raciborskii cultures growing at different cell densities displayed broad inhibitory activity. Moreover, higher temperature, higher light intensity as well phosphate limitation further enhanced this activity. The distinct and comprehensive patterns of inhibition verified during the growth phase, and under the tested parameters, suggest the action of several, still unidentified allelopathic compounds. It is expectable that the observed increase in allelopathic activity can result in distinct ecological advantages to C. raciborskii.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9