Iron and phosphorus deprivation induce sociality in the marine bloom-forming cyanobacterium Trichodesmium

The ISME Journal
Yael TzubariIlana Berman-Frank

Abstract

Trichodesmium spp. are diazotrophic cyanobacteria that exist as single filaments (trichomes) and as macroscopic colonies of varying shapes formed by aggregating trichomes. The causes and dynamics of colony formation and disassociation are not yet elucidated. we demonstrate that limited availability of dissolved phosphorus (P) or iron (Fe) stimulated trichome mobility and induced colony formation in Trichodesmium erythraeum IMS101 cultures. The specific nutrient limitation differentially affected the rate of colony formation and morphology of the colonies. Fe starvation promoted rapid colony formation (10-48 h from depletion) while 5-7 days were required for colonies to form in P-depleted cultures. Video analyses confirmed that the probability of trichomes to cluster increased from 12 to 35% when transferred from nutrient replete to Fe-depleted conditions. Moreover, the probability for Fe-depleted aggregates to remain colonial increased to 50% from only 10% in nutrient replete cultures. These colonies were also characterized by stronger attachment forces between the trichomes. Enrichment of nutrient-depleted cultures with the limited nutrient-stimulated colony dissociation into single trichomes. We postulate that limited P and F...Continue Reading

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Citations

Oct 23, 2019·The ISME Journal·Isabell KlawonnHelle Ploug
Sep 26, 2019·The ISME Journal·Nivi KesslerYeala Shaked
Jul 9, 2020·Physical Review Letters·Jonasz Słomka, Roman Stocker
Jul 3, 2020·Molecular Microbiology·Esthefani G ZunigaDouglas D Risser
Oct 29, 2020·Scientific Reports·Mar Benavides, Javier Arístegui
Mar 17, 2021·Proceedings of the National Academy of Sciences of the United States of America·Thomas V HarwoodDouglas D Risser
Jun 28, 2021·Trends in Microbiology·Guo-Wei QiuNir Keren
Jul 14, 2021·Environmental Science & Technology·Abeera A AnsariChul Park
Sep 30, 2021·Environmental Science and Pollution Research International·Wenjing WangMing Jiang
Jul 8, 2021·Nature Communications·Juan José Pierella KarlusichRachel A Foster

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Methods Mentioned

BETA
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AFM

Software Mentioned

Matlab
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