2015
DOI: 10.3389/fmicb.2015.00930
|View full text |Cite
|
Sign up to set email alerts
|

Seeking sunlight: rapid phototactic motility of filamentous mat-forming cyanobacteria optimize photosynthesis and enhance carbon burial in Lake Huron’s submerged sinkholes

Abstract: We studied the motility of filamentous mat-forming cyanobacteria consisting primarily of Oscillatoria-like cells growing under low-light, low-oxygen, and high-sulfur conditions in Lake Huron’s submerged sinkholes using in situ observations, in vitro measurements and time-lapse microscopy. Gliding movement of the cyanobacterial trichomes (100–10,000 μm long filaments, composed of cells ∼10 μm wide and ∼3 μm tall) revealed individual as well as group-coordinated motility. When placed in a petri dish and disperse… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

1
34
0

Year Published

2016
2016
2024
2024

Publication Types

Select...
6
1

Relationship

1
6

Authors

Journals

citations
Cited by 31 publications
(35 citation statements)
references
References 45 publications
(97 reference statements)
1
34
0
Order By: Relevance
“…It seems that the chemical environment established by venting groundwater in the MIS allows microbial mat communities to establish, in part by relieving grazing pressure due to low dissolved oxygen concentrations (Stal, 1995). The MIS microbial mat is capable of high primary production rates (Voorhies et al, 2012), yet underlying sediments largely reflect isotopic characteristics of settling phytoplankton (Nold et al, 2013), implying rapid decomposition of mat biomass prior to burial (Canfield & Des Marais, 1993) and/or significant upward mat motility (Biddanda, McMillan, Long, Snider, & Weinke, 2015) to avoid burial.…”
Section: Nutrient-rich Sedimentsmentioning
confidence: 99%
See 1 more Smart Citation
“…It seems that the chemical environment established by venting groundwater in the MIS allows microbial mat communities to establish, in part by relieving grazing pressure due to low dissolved oxygen concentrations (Stal, 1995). The MIS microbial mat is capable of high primary production rates (Voorhies et al, 2012), yet underlying sediments largely reflect isotopic characteristics of settling phytoplankton (Nold et al, 2013), implying rapid decomposition of mat biomass prior to burial (Canfield & Des Marais, 1993) and/or significant upward mat motility (Biddanda, McMillan, Long, Snider, & Weinke, 2015) to avoid burial.…”
Section: Nutrient-rich Sedimentsmentioning
confidence: 99%
“…Although microbial mat biomass is often rapidly, and sometimes completely, decomposed before burial (Canfield & Des Marais, 1993), mats likely play direct and indirect roles in establishing and maintaining high-nutrient conditions of underlying sediment material, further enhancing the high-nutrient conditions encouraged by the low-oxygen environment. The mats may play a direct role in sediment nutrient conditions through their motility, which allows them to physically bury organic particles (Biddanda et al, 2015;Stal, 1995). In addition, their extracellular polysaccharide matrix can slow diffusion of nutrient molecules and limit re-suspension of particles into overlying waters (Benjamini & Hochberg, 1995).…”
Section: Nutrient-rich Sedimentsmentioning
confidence: 99%
“…These conditions simultaneously act to de crease the incident angle of oncoming PAR for cyanobacteria on the plants, and cyanobacterial growth on these substrates may promote self-shading. The cyanobacteria can take advantage of these physical features over small scales by rapid phototactic motility (Biddanda et al , 2015. Oxygen is available for those cyanobacteria located on or even near these plants (perhaps in only small amounts), which provides some benefit in the form of respiration.…”
Section: Physical Differences Of Study Sites Influence Mat Photophysimentioning
confidence: 99%
“…For example, the cyanobacterial community in EC was preferentially attached below plants and detrital rafts, receiving a different angle of radiation. The cyanobacterial assemblage in these natural environments, dominated by similar Phormidium sp., has strong phototactic responses (Biddanda et al 2015). On the other hand, cyanobacteria at FT were frequently in direct, high irradiance, with minimal options for phototactic or photoaverse movement.…”
Section: Physical Differences Of Study Sites Influence Mat Photophysimentioning
confidence: 99%
See 1 more Smart Citation