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- W3096094023 abstract "Abstract • Background and Aims Sphagnum mosses are vital for peatland carbon (C) sequestration, although vulnerable to environmental changes. For averting environmental stresses such as hydrological changes, Sphagnum mosses developed an array of morphological and anatomical peculiarities maximizing their water holding capacity. They also produce plethora of biochemicals that could prevent stresses-induced cell-damages but these chemicals remain poorly studied. We aimed to study how various anatomical, metabolites, and antioxidant enzymes vary according to Sphagnum taxonomy, phylogeny and environmental conditions. • Methods We conducted our study in five Sphagnum -dominated peatlands distributed along a latitudinal gradient in Europe, representing a range of local environmental and climate conditions. We examined the direct and indirect effects of latitudinal changes in climate and vegetation species turnover on Sphagnum anatomical (cellular and morphological characteristics) and biochemical (spectroscopical identification of primary and specialized metabolites, pigments and enzymatic activities) traits. • Key results We show that Sphagnum traits were not driven by phylogeny, suggesting that taxonomy and/or environmental conditions prevail on phylogeny in driving Sphagnum traits variability. We found that moisture conditions were important determinants of Sphagnum anatomical traits, especially those related to water holding capacity. However, the species with the highest water holding capacity also exhibited the highest antioxidant capacity, as showed by the high flavonoid and enzymatic activities in their tissues. Our study further highlighted the importance of vascular plants in driving Sphagnum biochemical traits. More particularly, we found that Sphagnum mosses raises the production of specific compounds such as tannins and polyphenols known to reduce vascular plant capacity when herbaceous cover increases. • Conclusions Our findings show that Sphagnum anatomical and biochemical traits underpin Sphagnum niche differentiation through their role in specialization towards biotic stressors, such as plant competitors, and abiotic stressors, such as hydrological changes, which are important factors governing Sphagnum growth." @default.
- W3096094023 created "2020-11-09" @default.
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- W3096094023 date "2020-10-29" @default.
- W3096094023 modified "2023-10-15" @default.
- W3096094023 title "Morphological and biochemical responses of<i>Sphagnum</i>mosses to environmental changes" @default.
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- W3096094023 doi "https://doi.org/10.1101/2020.10.29.360388" @default.
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