Effects of Salinity on Assembly Characteristics and Function of Microbial Communities in the Phyllosphere and Rhizosphere of Salt-Tolerant
            <i>Avicennia marina</i>
            Mangrove Species

Yang, Xiangxia; Dai, Zhiyu; Yuan, Rongwei; Guo, Z. X.; Xi, Hanxiao; He, Zhili; Mi, Wei

doi:10.1128/spectrum.03000-22

Cited by 7 publications

(2 citation statements)

References 64 publications

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“…In comparison, the distribution of Actinobacteriota varied across water masses, with CW exhibiting the highest proportion. This observation is consistent with previous research ( Yang et al, 2023 ), which indicates a negative correlation between salinity levels and the abundance of Actinobacteriota . In the middle seawater, there was a significant difference in the proportion of Cyanobacteria among the various water masses.…”

Section: Discussionsupporting

confidence: 94%

Water masses influence the variation of microbial communities in the Yangtze River Estuary and its adjacent waters

Xian,

Chen,

Zheng

et al. 2024

Front. Microbiol.

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The Yangtze River estuary (YRE) are strongly influenced by the Kuroshio and terrigenous input from rivers, leading to the formation of distinct water masses, however, there remains a limited understanding of the full extent of this influence. Here the variation of water masses and bacterial communities of 58 seawater samples from the YRE and its adjacent waters were investigated. Our findings suggested that there were 5 water masses in the studied area: Black stream (BS), coastal water in the East China Sea (CW), nearshore mixed water (NM), mixed water in the middle and deep layers of the East China Sea (MM), and deep water blocks in the middle of the East China Sea (DM). The CW mass harbors the highest alpha diversity across all layers, whereas the NM mass exhibits higher diversity in the surface layer but lower in the middle layers. Proteobacteria was the most abundant taxa in all water masses, apart from that, in the surface layer masses, Cyanobacterium, Bacteroidota, and Actinobacteriota were the highest proportion in CW, while Bacteroidota and Actinobacteriota were the highest proportion in NM and BS; in the middle layer, Bacteroidota and Actinobacteriota were dominant phylum in CW and BS masses, but Cyanobacterium was main phylum in NM mass; in the bottom layer, Bacteroidota and Actinobacteriota were the dominant phylum in CW, while Marininimicrobia was the dominated phylum in DM and MM masses. Network analysis suggests water masses have obvious influence on community topological characteristics, moreover, community assembly across masses also differ greatly. Taken together, these results emphasized the significant impact of water masses on the bacterial composition, topological characteristics and assembly process, which may provide a theoretical foundation for predicting alterations in microbial communities within estuarine ecosystems under the influence of water masses.

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Section: Discussionsupporting

confidence: 94%

Water masses influence the variation of microbial communities in the Yangtze River Estuary and its adjacent waters

Xian,

Chen,

Zheng

et al. 2024

Front. Microbiol.

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“…Moreover, in a low-salinity environment (2‰, w/w), PO, BG, and CBH exhibited high activities. This positive correlation between soil enzyme activities and salinity aligns with Yang et al's findings [60], who suggested that salinity stress can enhance the activity of stress-resistant enzymes. The heightened enzyme activity observed in our study could be attributed to bacterial com-munity changes, which could produce enzymes with antistress and growth-promoting functions.…”

Section: Effects Of Snail and Salinity On Soil Enzyme Activitiessupporting

confidence: 89%

The Impact of an Alien Snail Pomacea canaliculata Invading Coastal Saline Soils on Soil Chemical and Biological Properties

Chen,

Zhou,

et al. 2024

Agronomy

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Recent studies have indicated that the invasive apple snail (Pomacea canaliculata) exhibits tolerance to the salinity levels present in coastal agricultural soils, suggesting that apple snails could potentially invade salt-affected coastal agricultural areas. However, the effects of the alien snail Pomacea canaliculata invasion on coastal saline soils, such as in terms of soil properties, microbial diversity, and abundance, remain poorly understood. To fill this gap, we conducted experiments involving three salinity levels (0, 2‰, and 5‰, w/w), coupled with varying snail densities (0, 5, and 10 snails per box), applied to agricultural soil. We analyzed soil chemical properties, enzyme activities, and bacterial communities. The findings revealed that heightened soil salinity increased soil electrical conductivity (EC) (exceeding 1312.67 μS cm−1). Under saline conditions, snail treatments significantly increased the soil organic matter (SOM) content from 15.82 mg kg−1 to 18.69 mg kg−1, and concurrently diminished the dissolved organic carbon (DOC) from 47.45 mg kg−1 to 34.60 mg kg−1. Both snail and salinity treatments resulted in ammonia nitrogen (NH4+-N) accumulation, while nitrate nitrogen (NO3−-N) concentrations remained low in salt-affected soils. A notable positive correlation existed between the EC and the activities of hydroxylamine reductase (HR) and peroxidase (POD), where HR exhibited a positive correlation with NH4+-N, and POD displayed a negative correlation with NO3−-N. Salinity substantially decreased the diversity and altered the composition of soil bacterial community, with the phyla Bacteroidota, Proteobacteria, and Firmicutes adapting to salt-affected soil environment and proliferating. Structural equation modeling (SEM) analysis indicated that snails exerted a direct influence on soil-available nitrogen (including NO3−-N and NH4+-N), while salinity impacted available nitrogen by modulating soil enzyme activities and bacterial communities. Our findings provide insights into how soil responds to the concurrent impacts of snail invasion and soil salinization, establishing some references for future research.

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Root-Associated Plant Growth-Promoting Bacteria in Mangrove Ecosystem and its Application in Sustainable Biotechnology

Dey,

Upadhyay,

Maity

et al. 2024

Indian J Microbiol

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Effects of Salinity on Assembly Characteristics and Function of Microbial Communities in the Phyllosphere and Rhizosphere of Salt-Tolerant Avicennia marina Mangrove Species

Cited by 7 publications

References 64 publications

Water masses influence the variation of microbial communities in the Yangtze River Estuary and its adjacent waters

Water masses influence the variation of microbial communities in the Yangtze River Estuary and its adjacent waters

The Impact of an Alien Snail Pomacea canaliculata Invading Coastal Saline Soils on Soil Chemical and Biological Properties

Root-Associated Plant Growth-Promoting Bacteria in Mangrove Ecosystem and its Application in Sustainable Biotechnology

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