Metabolites of extracellular organic matter from Microcystis and Dolichospermum drive distinct modes of carbon, nitrogen, and phosphorus recycling

Yan, Zuting; Liu, Zhenghan; Jia, Zhiming; Song, Changchun; Cao, Xiuyun; Zhou, Yiyong

doi:10.1016/j.scitotenv.2022.161124

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…aeruginosa. Organic acids are reportedly the major components in extracellular organic matter (EOM) metabolized by Microcystis and bacteria, suggesting their strong ability to exploit insoluble P in sediments . Meanwhile, EOM from Microcystis triggered a shift in the structure and function of the attached microbial community toward nutrient recycling (including P), with a close mutual relationship between each other, thus accelerating available nutrient retention and regeneration to maintain Microcystis growth …”

Section: Resultsmentioning

confidence: 99%

“…57 Meanwhile, EOM from Microcystis triggered a shift in the structure and function of the attached microbial community toward nutrient recycling (including P), with a close mutual relationship between each other, thus accelerating available nutrient retention and regeneration to maintain Microcystis growth. 57 3.4. Effects of Brucella sp.…”

Section: Effects Of Brucella Sp On the Solubilization Of Limited Solu...mentioning

confidence: 99%

“…In natural ponds where cyanobacterial bloom occurs, for example, the abundance of phosphatase genes in bacteria attached to Microcystis was lower than that in Dolichospermum, suggesting a more self-dependent potential of OP hydrolysis by Microcystis than by Dolichospermum. 57 Although competition for P utilization exists between Microcystis and bacteria, most studies have shown that the relationship between Microcystis and the attached bacteria is mutualistic. 23,25 Here, the changes in the TP concentrations of the DC and IC groups (Figure 5A,B) and the aforementioned Microcystis growth results (Figure 2A,B) indicate that Brucella sp.…”

Section: Effects Of Brucella Sp On the Solubilization Of Limited Solu...mentioning

confidence: 99%

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Roles of Attached Bacteria on the Growth and Metabolism of Microcystis aeruginosa with Limited Soluble Phosphorus

Song,

Li,

Zou

et al. 2024

ACS EST Water

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The limited endogenous soluble phosphorus (P) in lake sediment is a potential and non-negligible P pool for the growth of Microcystis species and the bacteria attached to them. The attached bacteria are considered as P utilization supporters that contribute to Microcystis blooms; however, their effects on Microcystis growth and metabolism during the utilization of limited soluble P are poorly understood. Here, a series of cocultivations of Microcystis aeruginosa and a Microcystis growth-promoting bacterium, Brucella sp., were conducted using two P sources with limited solubility (tricalcium phosphate and calcium phytate). The results indicated that Brucella sp. secreted auxins to directly promote the growth of M. aeruginosa, and the secreted organic acids and alkaline phosphatase accelerated the overall P solubilization and transformation. In addition, the coexistence of M. aeruginosa with Brucella sp., which resulted in competition for P, stimulated M. aeruginosa to synthesize more photosynthetic pigments and alkaline phosphatase. Therefore, the results revealed that the attached bacteria improved the properties of M. aeruginosa and the phycosphere (e.g., the availability of P sources), providing comprehensive insights into their contribution to endogenous P utilization by Microcystis and the further occurrence of cyanobacterial blooms.

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Section: Resultsmentioning

confidence: 99%

Section: Effects Of Brucella Sp On the Solubilization Of Limited Solu...mentioning

confidence: 99%