How phoD-harboring functional microbial populations trigger the release risk of phosphorus in water sediment system of Shijiuhu Lake, China after experiencing the transseasonal shift

Yuan, Hang; Cai, Yiwei; Wang, Haixiang; Liu, Enfeng; Li, Qiang; Zeng, Qiandong

doi:10.1016/j.watres.2023.120107

Cited by 14 publications

(8 citation statements)

References 71 publications

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“…Generally, bacteria encoding cbbL and cbbM genes with a high connected degree in the network served as the keystone species and did not necessarily have higher relative abundance relative to any others. Similar contradiction was also found for N-, P-, and S-associating genes in the sediments. − That is, the occurrence of some rare genera with low abundances was crucial for C assimilation and fixation in the lacustrine sediments.…”

Section: Discussionsupporting

confidence: 52%

“…Similarly, most nodes were in the Peripherals quadrant (90.5%) followed by Connectors (9.5%), and no nodes were in Module hubs together with Network hubs for the cbbM gene. The nodes in the Connectors quadrant were classified as keystone taxa due to their high connectivity within a module or multiple modules. , Genera Acidovorax, Xanthobacter, Variovorax, andAquabacterium, having lower relative abundance, were in the Connectors group of the cbbL gene and considered as key genera. Similarly, Thiobacillus and Candidatus_Riegeria, having lower relative abundance, were classified into the connectors group and considered as key genera encoding the cbbM gene.…”

Section: Discussionmentioning

confidence: 99%

“…LEfSe was usually used to differentiate the dominant species in the microbiota and to seek out bacteria with biological differences in the bacterial communities . The LEfSe (Figure c) indicated that some rare populations, including the genera Stappia, Curvibacter, and Magnetospirillum with an LDA score higher than 2 played an important role in determining the bacterial community structure.…”

Section: Discussionmentioning

confidence: 99%

“…LEfSe was usually used to differentiate the dominant species in the microbiota and to seek out bacteria with biological differences in the bacterial communities. 55 The LEfSe (Figure 4c) indicated that some rare populations, including the genera Stappia, Curvibacter, and Magnetospirillum with an LDA score higher than 2 played an important role in determining the bacterial community structure. It was noted that the northern region had more species as key nodes of both cbbL and cbbM genes than other regions, further suggesting that higher nutrients and active Fe loads facilitated the occurrence and shift of microbiota harboring C-associating genes.…”

Section: Fixation Via Fe Associationmentioning

confidence: 99%

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Biotic and Abiotic Regulations of Carbon Fixation into Lacustrine Sediments with Different Nutrient Levels

Yuan,

Li,

Cai

et al. 2024

Environ. Sci. Technol.

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Lake sediments play a critical role in organic carbon (OC) conservation. However, the biogeochemical processes of the C cycle in lake ecosystems remain limitedly understood. In this study, Fe fractions and OC fractions, including total OC (TOC) and OC associated with iron oxides (TOCFeO), were measured for sediments from a eutrophic lake in China. The abundance and composition of bacterial communities encoding genes cbbL and cbbM were obtained by using high-throughput sequencing. We found that autochthonous algae with a low C/N ratio together with δ13C values predominantly contributed to the OC burial in sediments rather than terrigenous input. TOCFeO served as an important C sink deposited in the sediments. A significantly positive correlation (r = 0.92, p < 0.001) suggested the remarkable regulation of complexed FeO (Fep) on fixed TOC fractions, and the Fe redox shift triggered the loss of deposited OC. It should be noted that a significant correlation was not found between the absolute abundance of C-associating genera and TOC, as well as TOCFeO, and overlying water. Some rare genera, including Acidovora and Thiobacillus, served as keystone species and had a higher connected degree than the genera with high absolute abundance. These investigations synthetically concluded that the absolute abundance of functional genes did not dominate CO2 fixation into the sediments via photosynthesis catalyzed by the C-associating RuBisCO enzyme. That is, rare genera, together with high-abundance genera, control the C association and fixation in the sediments.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Fixation Via Fe Associationmentioning

confidence: 99%

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Biotic and Abiotic Regulations of Carbon Fixation into Lacustrine Sediments with Different Nutrient Levels

Yuan,

Li,

Cai

et al. 2024

Environ. Sci. Technol.

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“…12 This can be observed from changes in the P fraction concentrations and P supply ability in the sediment from our previous study. 42 Furthermore, microbes decompose the solid-phase P and release SRP into the sediment porewater. 43 The SRP gradually released from the sediment is used by overwintering algae, which will subsequently enter the overlying water and form an algal bloom.…”

Section: The Relationship Between Algal Biomass and Availability Of P...mentioning

confidence: 99%

Sediment Phosphorus Supply and Availability in the Algal-Dominated Zone of a Large Eutrophic Lake (Lake Taihu)

Yin,

Lv,

Sheng

et al. 2024

ACS EST Water

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In this study, sediment internal phosphorus (P) and its supply ability were studied in the algal-dominated zone of Lake Taihu during the overwintering and recruitment period of algae. The results indicated that sediment P fluxes, P mobile fractions, and P supply kinetics showed dynamic changes from the overwinter to the algal recruitment period. P flux and the concentration of the diffusive gradient in thin film (DGT)-measured labile P increased from winter to summer. However, the highest P supply ability was found in spring sediments, as indicated by the ratios of DGT-P to porewater P, suggesting that spring sediments can supply more P for the growth of overwinter algae. Laboratory incubation experiments show that sediment with a higher mobile P content could release more soluble P under suitable conditions, thereby increasing the chlorophyll a (Chla) concentration. The growth of overwinter algae appeared to be more correlated with porewater P concentrations and the ratios of nitrogen to phosphorus than with the solid-phase mobile P fractions, as indicated by the Pearson correlation analysis. This study strengthens our understanding of the relationship between the availability of sediment P and algal recruitment from sediments.

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Endophytic colonization of Phomopsis liquidambaris recruits rhizospheric Ralstonia by inducing acetic acid secretion to facilitate phosphorus uptake by Arachis hypogaea L. in continuously cropped soil

Jiang,

Zhang,

et al. 2024

Plant Soil

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How phoD-harboring functional microbial populations trigger the release risk of phosphorus in water sediment system of Shijiuhu Lake, China after experiencing the transseasonal shift

Cited by 14 publications

References 71 publications

Biotic and Abiotic Regulations of Carbon Fixation into Lacustrine Sediments with Different Nutrient Levels

Biotic and Abiotic Regulations of Carbon Fixation into Lacustrine Sediments with Different Nutrient Levels

Sediment Phosphorus Supply and Availability in the Algal-Dominated Zone of a Large Eutrophic Lake (Lake Taihu)

Endophytic colonization of Phomopsis liquidambaris recruits rhizospheric Ralstonia by inducing acetic acid secretion to facilitate phosphorus uptake by Arachis hypogaea L. in continuously cropped soil

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