Integration of Microbial Transformation Mechanism of Polyphosphate Accumulation and Sulfur Cycle in Subtropical Marine Mangrove Ecosystems with Spartina alterniflora Invasion

Mo, Shuming; Sheng, He; Sang, Yimeng; Li, Jinhui; Kashif, Muhammad; Zhang, Zufan; Su, Guijiao; Jiang, Chengjian

doi:10.1007/s00248-022-01979-w

Cited by 15 publications

(9 citation statements)

References 56 publications

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“…Because nucleic acid synthesis and energy conversion in plants require P, P levels in soil may greatly affect plant communities (Mo et al 2022;Zhang et al 2022). Our results indicate a high P level in soil signi cantly reduces the growth of C. odorata, which is consistent with the results obtained for other invasive plants (Cai et al 2020).…”

Section: High Soil Phosphorus Level Reduces the Competition Of C Odor...supporting

confidence: 90%

High phosphorus availability and low light intensity resist the invasiveness of alien plant Chromolaena odorata on tropical coral islands

Huang

Liao

Liao³

et al. 2023

Preprint

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The vegetation and ecosystems of the Paracel Islands are extremely fragile and very difficult to restore after destruction. Chromolaena odorata is one of the most common invasive plants as guano phosphorus input constantly decreasing for islands, which has caused substantial harm to native vegetation on the Paracel Islands in recent years. In the current study, we investigated the growth and interspecific competition of C. odorata with the native species Pisonia grandis and Scaevola taccada as affected by light intensity and soil P content. The experiment, which was conducted in greenhouse, had two light intensities (full light or 10% light) and three levels of soil available phosphorus (P) content (53.89 mg·kg-1 low P, 253.89 mg·kg-1 medium P, and 1053.89 mg·kg-1 high P). The results showed that low light intensity significantly inhibited the growth of P. grandis, S. taccada, and C. odorata. However, compared with the low P treatment, the high P treatment significantly inhibited the growth of C. odorata and P. grandis, and significantly increased the growth of S. taccada under full-light conditions. The effect of soil P content on the interspecific competition between C. odorata, P. grandis, and S. taccada was affected by light intensity and plant species. Compared with the low and medium P treatments, the high P treatment significantly reduced the competitive advantage of C. odorata over P. grandis. The results demonstrate that shaded habitats with high soil P content could restrict invasion by C. odorata. This suggests that the invasion on tropical coral islands by C. odorata can be reduced by protecting the native vegetation (to increase shade) and seabirds (to increase soil P content).

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Section: High Soil Phosphorus Level Reduces the Competition Of C Odor...supporting

confidence: 90%

High phosphorus availability and low light intensity resist the invasiveness of alien plant Chromolaena odorata on tropical coral islands

Huang

Liao

Liao³

et al. 2023

Preprint

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“…When 134 sludge samples from the mangrove wetlands in Dongzhaigang, Hainan Island in China were screened for polyphosphate accumulation, 185 isolates of polyphosphate accumulating organisms (PAOs) were obtained with 42 PAOs exhibiting 20–80% P-removal, which signified phosphorus removal as a natural mechanism preventing eutrophication in water bodies ( Wu et al, 2016 ). Spartina alterniflora invasion was found to be associated with the simultaneous significant abundance of sulfate reduction genes, sulfur oxidation genes, and polyphosphate kinase ( ppk ) genes, at 25–50 cm depth of mangrove sediment, establishing a strong positive correlation between P and S co-bioconversion, as a unique adaptive trait of avoiding excessive P deposition in marshes causing eutrophication via sulfur metabolism-linked biological P removal ( Mo et al, 2023 ). An obvious metabolic coupling between BNF and P-accumulation/solubilization was observed in S. alterniflora- invaded subtropical mangrove niches in the Beibu Gulf of China ( Zhang et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

Estuarine mangrove niches select cultivable heterotrophic diazotrophs with diverse metabolic potentials—a prospective cross-dialog for functional diazotrophy

Mondal,

Biswas,

Chowdhury

et al. 2024

Front. Microbiol.

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IntroductionBiological nitrogen fixation (BNF), an unparalleled metabolic novelty among living microorganisms on earth, globally contributes ~88-101 Tg N year−1 to natural ecosystems, ~56% sourced from symbiotic BNF while ~22-45% derived from free-living nitrogen fixers (FLNF). The success of symbiotic BNF is largely dependent on its interaction with host-plant, however ubiquitous environmental heterotrophic FLNFs face many limitations in their immediate ecological niches to sustain unhindered BNF. The autotrophic FLNFs like cyanobacteria and oceanic heterotrophic diazotrophs have been well studied about their contrivances acclimated/adapted by these organisms to outwit the environmental constraints for functional diazotrophy. However, FLNF heterotrophs face more adversity in executing BNF under stressful estuarine/marine/aquatic habitats.MethodsIn this study a large-scale cultivation-dependent investigation was accomplished with 190 NCBI accessioned and 45 non-accessioned heterotrophic FLNF cultivable bacterial isolates (total 235) from halophilic estuarine intertidal mangrove niches of Indian Sundarbans, a Ramsar site and UNESCO proclaimed World Heritage Site. Assuming ~1% culturability of the microbial community, the respective niches were also studied for representing actual bacterial diversity via cultivation-independent next-generation sequencing of V3-V4 rRNA regions.ResultsBoth the studies revealed a higher abundance of culturable Gammaproteobacteria followed by Firmicutes, the majority of 235 FLNFs studied belonging to these two classes. The FLNFs displayed comparable selection potential in media for free nitrogen fixers and iron-oxidizing bacteria, linking diazotrophy with iron oxidation, siderophore production, phosphorus solubilization, phosphorus uptake and accumulation as well as denitrification.DiscussionThis observation validated the hypothesis that under extreme estuarine mangrove niches, diazotrophs are naturally selected as a specialized multidimensional entity, to expedite BNF and survive. Earlier metagenome data from mangrove niches demonstrated a microbial metabolic coupling among C, N, P, S, and Fe cycling in mangrove sediments, as an adaptive trait, evident with the co-abundant respective functional genes, which corroborates our findings in cultivation mode for multiple interrelated metabolic potential facilitating BNF in a challenging intertidal mangrove environment.

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“…The effects of plant invasion on local vegetation and microbial community in the soil are well documented ( Mamet et al, 2017 ; Wang et al, 2018 ; Shen et al, 2021 ; Mo et al, 2022 ). However, there is no empirical evidence to support the relative importance of soil edaphic characteristics vs. keystone taxa in regulating microbial functional processes involved in CNPS cycling.…”

Section: Discussionmentioning

confidence: 99%

Changes in the structure and function of rhizosphere soil microbial communities induced by Amaranthus palmeri invasion

Zhang

Shi

et al. 2023

Front. Microbiol.

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IntroductionPlant invasion can profoundly alter ecosystem processes driven by microorganisms. The fundamental mechanisms linking microbial communities, functional genes, and edaphic characteristics in invaded ecosystems are, nevertheless, poorly understood.MethodsHere, soil microbial communities and functions were determined across 22 Amaranthus palmeri (A. palmeri) invaded patches by pairwise 22 native patches located in the Jing-Jin-Ji region of China using high-throughput amplicon sequencing and quantitative microbial element cycling technologies.ResultsAs a result, the composition and structure of rhizosphere soil bacterial communities differed significantly between invasive and native plants according to principal coordinate analysis. A. palmeri soils exhibited higher abundance of Bacteroidetes and Nitrospirae, and lower abundance of Actinobacteria than native soils. Additionally, compared to native rhizosphere soils, A. palmeri harbored a much more complex functional gene network with higher edge numbers, average degree, and average clustering coefficient, as well as lower network distance and diameter. Furthermore, the five keystone taxa identified in A. palmeri rhizosphere soils belonged to the orders of Longimicrobiales, Kineosporiales, Armatimonadales, Rhizobiales and Myxococcales, whereas Sphingomonadales and Gemmatimonadales predominated in the native rhizosphere soils. Moreover, random forest model revealed that keystone taxa were more important indicators of soil functional attributes than edaphic variables in both A. palmeri and native rhizosphere soils. For edaphic variables, only ammonium nitrogen was a significant predictor of soil functional potentials in A. palmeri invaded ecosystems. We also found keystone taxa in A. palmeri rhizosphere soils had strong and positive correlations with functional genes compared to native soils.DiscussionOur study highlighted the importance of keystone taxa as a driver of soil functioning in invaded ecosystem.

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Integration of Microbial Transformation Mechanism of Polyphosphate Accumulation and Sulfur Cycle in Subtropical Marine Mangrove Ecosystems with Spartina alterniflora Invasion

Cited by 15 publications

References 56 publications

High phosphorus availability and low light intensity resist the invasiveness of alien plant Chromolaena odorata on tropical coral islands

High phosphorus availability and low light intensity resist the invasiveness of alien plant Chromolaena odorata on tropical coral islands

Estuarine mangrove niches select cultivable heterotrophic diazotrophs with diverse metabolic potentials—a prospective cross-dialog for functional diazotrophy

Changes in the structure and function of rhizosphere soil microbial communities induced by Amaranthus palmeri invasion

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