Prosiectau fesul blwyddyn
Crynodeb
Mosses of the genus Sphagnum are the main components of peatlands, a major carbon-storing ecosystem. Changes in precipitation patterns are predicted to affect water relations in this ecosystem, but the effect of desiccation on the physiological and molecular processes in Sphagnum is still largely unexplored. Here we show that different Sphagnum species have differential physiological and molecular responses to desiccation but, surprisingly, this is not directly correlated with their position in relation to the water table. In addition, the expression of drought responsive genes is increased upon water withdrawal in all species. This increase in gene expression is accompanied by an increase in abscisic acid (ABA), supporting a role for ABA during desiccation responses in Sphagnum. Not only do ABA levels increase upon desiccation, but Sphagnum plants pre-treated with ABA display increased tolerance to desiccation, suggesting that ABA levels play a functional role in the response. In addition, many of the ABA signalling components are present in Sphagnum and we demonstrate, by complementation in Physcomitrium patens, that Sphagnum ABI3 is functionally conserved. The data presented here, therefore, support a conserved role for ABA in desiccation responses in Sphagnum.
Iaith wreiddiol | Saesneg |
---|---|
Tudalennau (o-i) | 4576-4591 |
Nifer y tudalennau | 16 |
Cyfnodolyn | Journal of Experimental Botany |
Cyfrol | 73 |
Rhif cyhoeddi | 13 |
Dyddiad ar-lein cynnar | 06 Ebr 2022 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 16 Gorff 2022 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Molecular and physiological responses to desiccation indicate the abscisic acid pathway is conserved in the peat moss, Sphagnum'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Prosiectau
- 2 Wedi Gorffen
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The cellular basis of ecosystem engineering by Sphagnum peatmoss
01 Medi 2018 → 30 Medi 2022
Prosiect: Ymchwil a ariannwyd yn allanol
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European Plant Phenotyping Network 2020 : EPPN2020
Horizon 2020 -European Commission
01 Mai 2017 → 31 Hyd 2021
Prosiect: Ymchwil a ariannwyd yn allanol