NDLI: Assessment of the Effects of Light Availability on Growth and Competition Between Strains of Planktothrix agardhii and Microcystis aeruginosa

Content Provider	Springer Nature Link
Author	Torres, Camila de Araujo Lürling, Miquel Marinho, Marcelo Manzi
Copyright Year	2015
Abstract	In this study, we tested the hypothesis that Planktothrix agardhii strains isolated from a tropical water body were better competitors for light than Microcystis aeruginosa strains. These cyanobacteria are common in eutrophic systems, where light is one of the main drivers of phytoplankton, and Planktothrix is considered more shade-adapted and Microcystis more high-light tolerant. First, the effect of light intensities on growth was studied in batch cultures. Next, the minimum requirement of light (I) and the effect of light limitation on the outcome of competition was investigated in chemostats. All strains showed similar growth at 10 μmol photons m−2 s−1, demonstrating the ability of the two species to grow in low light. The optimum light intensity was lower for P. agardhii, but at the highest light intensity, Microcystis strains reached higher biovolume, confirming that P. agardhii has higher sensitivity to high light. Nonetheless, P. agardhii grew in light intensities considered high (500 μmol photons m−2 s−1) for this species. M. aeruginosa showed a higher carrying capacity in light-limited condition, but I was similar between all the strains. Under light competition, Microcystis strains displaced P. agardhii and dominated. In two cases, there was competitive exclusion and in the other two P. agardhii managed to remain in the system with a low biovolume (≈15 %). Our findings not only show that strains of P. agardhii can grow under higher light intensities than generally assumed but also that strains of M. aeruginosa are better competitors for light than supposed. These results help to understand the co-occurrence of these species in tropical environments and the dominance of M. aeruginosa even in low-light conditions.
Starting Page	802
Ending Page	813
Page Count	12
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	71
Issue Number	4
e-ISSN	1432184X
Language	English
Publisher	Springer US
Publisher Date	2015-12-21
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Cyanobacteria Light limitation Interspecific variability Intraspecific variability Continuous culture Chemostats Microbiology Ecology Microbial Ecology Geoecology/Natural Processes Nature Conservation Water Quality/Water Pollution
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Light and Phosphate Competition Between Cylindrospermopsis raciborskii and Microcystis aeruginosa is Strain Dependent

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

Molecular Response of the Bloom-Forming Cyanobacterium, Microcystis aeruginosa, to Phosphorus Limitation

Sensitivity of Two Disjunct Bacterioplankton Communities to Exudates from the Cyanobacterium Microcystis aeruginosa Kützing

Interference Competition Among Household Strains of Pseudomonas

Light Availability May Control Extracellular Phosphatase Production in Turbid Environments

Pseudomonas aeruginosa Biofilms in Disease

Microbial Competition in Reactors with Wall Attachment

Effect of Nitrogen and Phosphorus on Growth of Toxic and Nontoxic Microcystis Strains and on Intracellular Microcystin Concentrations

Assessment of the Effects of Light Availability on Growth and Competition Between Strains of Planktothrix agardhii and Microcystis aeruginosa

Similar Documents

Light and Phosphate Competition Between Cylindrospermopsis raciborskii and Microcystis aeruginosa is Strain Dependent

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

Molecular Response of the Bloom-Forming Cyanobacterium, Microcystis aeruginosa, to Phosphorus Limitation

Sensitivity of Two Disjunct Bacterioplankton Communities to Exudates from the Cyanobacterium Microcystis aeruginosa Kützing

Interference Competition Among Household Strains of Pseudomonas

Light Availability May Control Extracellular Phosphatase Production in Turbid Environments

Pseudomonas aeruginosa Biofilms in Disease

Microbial Competition in Reactors with Wall Attachment

Effect of Nitrogen and Phosphorus on Growth of Toxic and Nontoxic Microcystis Strains and on Intracellular Microcystin Concentrations

Assessment of the Effects of Light Availability on Growth and Competition Between Strains of Planktothrix agardhii and Microcystis aeruginosa