The effect of bio-irrigation by the polychaete Lanice conchilega on active denitrifiers: Distribution, diversity and composition of nosZ gene

Foshtomi, Maryam Yazdani; Leliaert, Frédérik; Derycke, Sofie; Willems, Anne; Vincx, Magda; Vanaverbeke, Jan

doi:10.1371/journal.pone.0192391

Cited by 14 publications

(9 citation statements)

References 89 publications

(130 reference statements)

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“…The most probable reason for the above phenomenon is that the community compositions of nosZ denitrifiers are strongly shaped by the environmental conditions, such as denitrifying enzyme activity, soil organic carbon and total nitrogen (Brankatschk et al, 2011; Kandeler et al, 2006; Zeng et al, 2016). Our findings agree with past studies that the distribution of denitrification microorganisms depend on the environment (Chen et al, 2012; Zhang et al, 2017; Foshtomi et al, 2018).…”

Section: Discussionsupporting

confidence: 93%

Variation in denitrifying bacterial communities along a primary succession in the Hailuogou Glacier retreat area, China

Bai

Huang

Zhou

et al. 2019

PeerJ

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Background The Hailuogou Glacier is located at the Gongga Mountain on the southeastern edge of the Tibetan Plateau, and has retreated continuously as a result of global warming. The retreat of the Hailuogou Glacier has left behind a primary succession along soil chronosequences. Hailuogou Glacier’s retreated area provides an excellent living environment for the colonization of microbes and plants, making it an ideal model to explore plant successions, microbial communities, and the interaction of plants and microbes during the colonization process. However, to date, the density of the nitrogen cycling microbial communities remain unknown, especially for denitrifiers in the primary succession of the Hailuogou Glacier. Therefore, we investigated the structural succession and its driving factors for denitrifying bacterial communities during the four successional stages (0, 20, 40, and 60 years). Methods The diversity, community composition, and abundance of nosZ-denitrifiers were determined using molecular tools, including terminal restriction fragment length polymorphism and quantitative polymerase chain reactions (qPCR). Results nosZ-denitrifiers were more abundant and diverse in soils from successional years 20–60 compared to 0–5 years, and was highest in Site3 (40 years). The denitrifying bacterial community composition was more complex in older soils (40–60 years) than in younger soils (≤20 years). The terminal restriction fragments (T-RFs) of Azospirillum (90 bp) and Rubrivivax (95 bp) were dominant in soisl during early successional stages (0–20 years) and in the mature phase (40–60 years), respectively. Specific T-RFs of Bradyrhizobium (100 bp) and Pseudomonas (275 bp) were detected only in Site3 and Site4, respectively. Moreover, the unidentified 175 bp T-RFs was detected only in Site3. Of the abiotic factors that were measured in this study, soil available phosphorus, available potassium and denitrifying enzyme activity (DEA) correlated significantly with the community composition of nosZ-denitrifiers (P < 0.05 by Monte Carlo permutation test within RDA analysis).

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Section: Discussionsupporting

confidence: 93%

Variation in denitrifying bacterial communities along a primary succession in the Hailuogou Glacier retreat area, China

Bai

Huang

Zhou

et al. 2019

PeerJ

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“…The pumping of L. conchilega transports nitrate into the sediment and increases the availability of oxygen in deeper layers of the sediment (Forster and Graf, 1995), increasing the surface for coupled nitrification-denitrifcation, stimulating these processes. Foshtomi et al (2018) furthermore proofs that L. conchilega influences the composition and density of denitrifying communities by changing the availability of nitrate. Higher diversity at depth was observed in L. conchilega patches, resulting in high denitrification rates.…”

Section: Discussionmentioning

confidence: 79%

Ocean acidification and warming modify stimulatory benthos effects on sediment functioning: An experimental study on two ecosystem engineers

Vlaminck

Moens²,

Braeckman³

et al. 2023

Front. Mar. Sci.

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Many macrofauna have a stimulatory effect on sediment functioning through their burrowing, feeding and irrigation activities. Here, we investigated the single and combined effect of ocean acidification and warming on the stimulatory effect of two key-species inhabiting sandy seabeds in the Southern Bight of the North Sea; the bivalve Abra alba and the polychaete Lanice conchilega. The species were separately incubated in natural sediment in the laboratory under ambient, low pH (pH: -0.3), warm (T: + 3°C) and mimicked climate change (pH: -0.3, T: +3°C) conditions. After six weeks of incubation, nutrient and oxygen exchange were measured at the sediment-water interface to estimate aerobic sediment metabolism and nitrogen cycling. Both species facilitate sediment community oxygen consumption, nitrification and denitrification under ambient conditions. The stimulatory effect of A. alba disappeared in a low pH environment and decreased over time in the warmer treatments along with increased mortality. In contrast, L. conchilega stimulated sediment biogeochemical cycling more when seawater becomes acidified (+ 8 to 41%, depending on the function) but warming had no effect. We explain these species-specific climate change effects by different behavioral and physiological coping strategies that cascade on to sediment biogeochemical cycling, especially through altered oxygenation the sediment matrix.

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“…The ecological functions of bioturbation have been well studied (Yazdani-Foshtomi et al, 2018;Mustajärvi et al, 2019). Bioturbation can promote biogeochemical processes (Fang et al, 2016;Hu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Factors Affecting Burrow Architecture of the Polychaete Perinereis Aibuhitensis

Fang

Zhang³

et al. 2022

Front. Mar. Sci.

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Bioturbation of infauna plays an important role in the biogeochemical processing of sediments. Infaunal animals build burrows and enlarge the sediment-water interface by their activities and so bioturbation is closely related with burrow structure and animal behavior in the sediment. The purpose of this study is to explore the characteristics of Perinereis aibuhitensis burrow structures with the factors of months and animal sizes (0-1g, 1-2g, 2-3g, 3-4g, and >4g), which would also provide useful knowledge of infauna behavioral ecology. The dimension and complexity of the burrows of P. aibuhitensis were measured by dissecting sediments. The results showed that there were three burrow shapes of P. aibuhitensis, i.e., I, Y and U shapes. Overall, the order of abundance of each of the three burrow shapes were I > Y > U. Larger P. aibuhitensis are inclined to build Y- and U-shaped burrows in June and August. There were significant differences in the tunnel diameter, burrow depth and burrow length separately between different polychaete size classes (P< 0.001). In February and August, the burrow depths and burrow lengths of P. aibuhitensis individuals with body weights of 1-2 g and 2-3 g were significantly greater than in other months (P< 0.001). P. aibuhitensis individuals of 1-2 g and 3-4 g body weight had significantly more burrow openings and branches in August than in February (P< 0.001). Within the same month, the burrow HEindex increased with increasing polychaete size, and when the sizes were 1-2 g, 2-3 g and 3-4 g, the complexity in August was higher than that in other months. This study suggests that I-shaped burrow dominants the burrow architecture of P. aibuhitensis. The polychaete with large size has a higher HEindex (burrow complexity) indicating a strong bioturbation ability. Y-shaped burrows are more conducive to the survival of P. aibuhitensis in hot weather. In order to adapt to environmental stresses outside, P. aibuhitensis usually builds deeper burrows.

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The effect of bio-irrigation by the polychaete Lanice conchilega on active denitrifiers: Distribution, diversity and composition of nosZ gene

Cited by 14 publications

References 89 publications

Variation in denitrifying bacterial communities along a primary succession in the Hailuogou Glacier retreat area, China

Variation in denitrifying bacterial communities along a primary succession in the Hailuogou Glacier retreat area, China

Ocean acidification and warming modify stimulatory benthos effects on sediment functioning: An experimental study on two ecosystem engineers

Factors Affecting Burrow Architecture of the Polychaete Perinereis Aibuhitensis

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