Moss and underlying soil bacterial community structures are linked to moss functional traits

Klarenberg, Ingeborg J.; Keuschnig, Christoph; Salazar, Augusto; Benning, Liane G.; Vilhelmsson, Oddur

doi:10.1002/ecs2.4447

Cited by 7 publications

(5 citation statements)

References 83 publications

(106 reference statements)

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“…Therefore, further research using techniques that can directly compare the influence of bryophytes on other organisms (e.g., measurement of nitrogenase activity) will be useful for elucidating relative contributions. Moreover, analyses of bacterial communities in CWD may reveal insights into the mechanisms by which the N content increases in CWD, given that bryophytes influence bacterial communities in the underlying substrates (Klarenberg et al, 2023).…”

Section: Limitations and Implicationsmentioning

confidence: 99%

Bryophytes enhance nitrogen content in decaying wood via biological interactions

Oishi

2024

Ecosphere

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An increase in the nitrogen (N) content in coarse woody debris (CWD) facilitates its decomposition, affecting the cycling of N and other nutrients in forest ecosystems. Bryophytes may increase the N content by transferring the N in bryophyte tissues to the underlying CWD. This study examined whether and how bryophytes increase N content in the underlying CWD using N‐stable isotope ratios (δ15N) as tracers for N sources. The N content and δ15N values in CWD with bryophytes were significantly higher than those in CWD without bryophytes. However, the δ15N values in CWD with bryophytes differed significantly from those in bryophytes on CWD, demonstrating that the N in bryophytes did not cause the increase in N content in CWD. The analyses using δ15N further indicated that the high N content in CWD with bryophytes may be attributed to increased N supply from wood‐decomposing fungi and N‐fixing bacteria. This increase in N content may result from the enhanced moisture content in CWD beneath bryophytes, which facilitates the activity of wood‐decomposing fungi and N‐fixing bacteria. Notably, the influence of bryophytes on the N content in CWD differed between bryophyte life forms: bryophytes that form dense mats increased the N content in CWD, whereas those with loose mats decreased the N content. This difference can be explained by the greater humidity experienced by CWD with bryophytes forming dense mats than that experienced by CWD with bryophytes forming loose mats. Given that the N content in CWD affects the decay processes, the results highlight the importance of biological interactions associated with bryophytes in forest ecosystems.

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Section: Limitations and Implicationsmentioning

confidence: 99%

Bryophytes enhance nitrogen content in decaying wood via biological interactions

Oishi

2024

Ecosphere

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“…The microenvironment created by bryophyte anatomy and community traits influences moisture, temperature, and organic matter composition (Fig. 3; Elumeeva et al ., 2011), which in turn influences microbial community composition and process rates (Klarenberg et al ., 2023). Biotic and abiotic controls over bryophyte‐associated BNF have been reviewed extensively by Rousk (2022).…”

Section: Bryophyte Contributions To the N Cyclementioning

confidence: 99%

Impact of changing climate on bryophyte contributions to terrestrial water, carbon, and nitrogen cycles

Slate,

Antoninka,

Bailey

et al. 2024

New Phytologist

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SummaryBryophytes, including the lineages of mosses, liverworts, and hornworts, are the second‐largest photoautotroph group on Earth. Recent work across terrestrial ecosystems has highlighted how bryophytes retain and control water, fix substantial amounts of carbon (C), and contribute to nitrogen (N) cycles in forests (boreal, temperate, and tropical), tundra, peatlands, grasslands, and deserts. Understanding how changing climate affects bryophyte contributions to global cycles in different ecosystems is of primary importance. However, because of their small physical size, bryophytes have been largely ignored in research on water, C, and N cycles at global scales. Here, we review the literature on how bryophytes influence global biogeochemical cycles, and we highlight that while some aspects of global change represent critical tipping points for survival, bryophytes may also buffer many ecosystems from change due to their capacity for water, C, and N uptake and storage. However, as the thresholds of resistance of bryophytes to temperature and precipitation regime changes are mostly unknown, it is challenging to predict how long this buffering capacity will remain functional. Furthermore, as ecosystems shift their global distribution in response to changing climate, the size of different bryophyte‐influenced biomes will change, resulting in shifts in the magnitude of bryophyte impacts on global ecosystem functions.

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“…However, it remains unclear whether the taxonomy and functions of moss-associated microbial communities are distinct in this highly perturbed and unique environment. In vascular plants naturally growing in mine sites, community structures of bacteria and fungi were found to be driven by plant species and environmental factors, namely pH and humidity (Gagnon et al, 2020a,b;Klarenberg et al, 2023). In moss microbiomes, pathways related to oxidative stress, such as biofilm formation have been previously detected, which can contribute to resilience of moss microbiomes in mine sites (Bragina et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Boreal moss-microbe interactions are revealed through metagenome assembly of novel bacterial species

Ishak

Faticov

Rondeau-Leclaire

et al. 2023

Preprint

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- Moss microbial communities play important roles for ecosystem processes in boreal forests. Host identity and leaf litter presence can affect microbial community structures of mosses. However, the extent to which host-specific characteristics and land use type affect taxonomic and functional profiles of microbial communities of boreal mosses is still poorly understood. - We used shotgun metagenomic sequencing to characterize microbial taxonomy and metabolic KEGG ortholog (KO) profiles between green and brown sections of five moss species across different natural sites, and two moss species between a natural site and a mine site in Eeyou Istchee, Quebec, Canada. - Our results demonstrate that the abundance of nitrogen metabolic genes differ between moss sections and that mosses from natural and mine environment associate with different microbial taxa and KO profiles. Importantly, conditions at the mine site appear to favor microbial taxa that can tolerate perturbated environments, including taxa that can oxidize sulfur and participate in biofilm formation. - Overall, our results highlight that moss section, moss species identity, and land-use type are strong drivers of diversity and community structure of moss-associated microbial taxa and metabolic genes. These findings could have major implications for boreal forests facing climate change and anthropogenic pressures

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Moss and underlying soil bacterial community structures are linked to moss functional traits

Cited by 7 publications

References 83 publications

Bryophytes enhance nitrogen content in decaying wood via biological interactions

Bryophytes enhance nitrogen content in decaying wood via biological interactions

Impact of changing climate on bryophyte contributions to terrestrial water, carbon, and nitrogen cycles

Boreal moss-microbe interactions are revealed through metagenome assembly of novel bacterial species

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