Roles of Bryophytes in Aquatic Ecology

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Ecology".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 481

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Department of Ecology and Environmental Protection, Faculty of Biology, Plovdiv University Paisii Hilendarski, 4000 Plovdiv, Bulgaria
Interests: environmental monitoring; environmental impact assessment; environmental pollution; water quality; air quality; river and lake ecology; aquatic macrophytes
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Special Issue Information

Dear Colleagues,

Bryophytes are poikilohydrous organisms, rely entirely on water absorption through leaves, and respond diversely to repeated droughts of varying duration. Peculiarities in their morphology and anatomy, such as the absence of the epidermis and cuticle or their strong reduction, single-layered leaves, poorly developed conducting tissues, and absence of a root system, determine a significant resistance, which, in many cases, is more emphasized compared to that of most phanerogams.

Bryophytes are among the best adapted plants, especially in habitats with extreme conditions. Due to their small size, they largely reflect microenvironmental conditions, e.g., the microclimate, soil development, and chemical composition.

Aquatic bryophytes are unique organisms and have exceptional survival strategies and ecological adaptations. They affect aquatic habitats in various aspects; for example, they optimize physical structure by providing a larger area for the periphyton’s development. Bryophytes are also considered to influence the structure of invertebrate communities by providing habitats for colonization and food sources: epiphytes and retained organic matter (detritus), and last but not least, by acting as a refuge from predators or strong currents.

Aquatic bryophytes are widely used worldwide to assess the quality of surface flowing or stagnant waters due to their capacity to accumulate a number of pollutants. The wide geographical distribution of some species allows comparative observations to be carried out under different aquatic environments. Original research articles and reviews, communications, and short notes on unique aquatic bryophytes are welcome.

Dr. Gana Gecheva
Guest Editor

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Keywords

  • aquatic bryophytes
  • freshwater
  • ecological factors
  • stressors
  • adaption
  • biomonitors

Published Papers (1 paper)

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Research

15 pages, 1130 KiB  
Communication
Exploring the Metatranscriptome of Bacterial Communities of Two Moss Species Thriving in Different Environments—Terrestrial and Aquatic
by Vesselin Baev, Gana Gecheva, Elena Apostolova, Mariyana Gozmanova and Galina Yahubyan
Plants 2024, 13(9), 1210; https://0-doi-org.brum.beds.ac.uk/10.3390/plants13091210 - 26 Apr 2024
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Abstract
Mosses host diverse bacterial communities essential for their fitness, nutrient acquisition, stress tolerance, and pathogen defense. Understanding the microbiome’s taxonomic composition is the first step, but unraveling their functional capabilities is crucial for grasping their ecological significance. Metagenomics characterizes microbial communities by composition, [...] Read more.
Mosses host diverse bacterial communities essential for their fitness, nutrient acquisition, stress tolerance, and pathogen defense. Understanding the microbiome’s taxonomic composition is the first step, but unraveling their functional capabilities is crucial for grasping their ecological significance. Metagenomics characterizes microbial communities by composition, while metatranscriptomics explores gene expression, providing insights into microbiome functionality beyond the structure. Here, we present for the first time a metatranscriptomic study of two moss species, Hypnum cupressiforme (Hedw.) and Platyhypnidium riparioides (Hedw.) Dixon., renowned as key biomonitors of atmospheric and water pollution. Our investigation extends beyond taxonomic profiling and offers a profound exploration of moss bacterial communities. Pseudomonadota and Actinobacteria are the dominant bacterial phyla in both moss species, but their proportions differ. In H. cupressiforme, Actinobacteria make up 62.45% and Pseudomonadota 32.48%, while in P. riparioides, Actinobacteria account for only 25.67% and Pseudomonadota 69.08%. This phylum-level contrast is reflected in genus-level differences. Our study also shows the expression of most genes related to nitrogen cycling across both microbiomes. Additionally, functional annotation highlights disparities in pathway prevalence, including carbon dioxide fixation, photosynthesis, and fatty acid biosynthesis, among others. These findings hint at potential metabolic distinctions between microbial communities associated with different moss species, influenced by their specific genotypes and habitats. The integration of metatranscriptomic data holds promise for enhancing our understanding of bryophyte–microbe partnerships, opening avenues for novel applications in conservation, bioremediation, and sustainable agriculture. Full article
(This article belongs to the Special Issue Roles of Bryophytes in Aquatic Ecology)
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