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Temperature depende...
Temperature dependence of respiration in roots colonized by arbuscular mycorrhizal fungi
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- Atkin, Owen K (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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- Sherlock, David (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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- Fitter, Alastair H (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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- Jarvis, Susan (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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- Hughes, John K (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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- Campbell, Catherine, 1976- (författare)
- Umeå universitet,Umeå Plant Science Centre (UPSC)
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- Hurry, Vaughan, 1960- (författare)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Hodge, Angela (författare)
- Department of Biology, The University of York, PO Box 373, York YO10 5YW, UK
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(creator_code:org_t)
- 2008-12-24
- 2009
- Engelska.
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Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 182:1, s. 188-199
- Relaterad länk:
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https://nph.onlineli...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- * The arbuscular mycorrhizal (AM) symbiosis is ubiquitous, and the fungus represents a major pathway for carbon movement in the soil-plant system. Here, we investigated the impacts of AM colonization of Plantago lanceolata and temperature on the regulation of root respiration (R). * Warm-grown AM plants exhibited higher rates of R than did nonAM plants, irrespective of root mass. AM plants exhibited higher maximal rates of R (R(max)-R measured in the presence of an uncoupler and exogenous substrate) and greater proportional use of R(max) as a result of increased energy demand and/or substrate supply. The higher R values exhibited by AM plants were not associated with higher maximal rates of cytochrome c oxidase (COX) or protein abundance of either the COX or the alternative oxidase. * Arbuscular mycorrhizal colonization had no effect on the short-term temperature dependence (Q(10)) of R. Cold-acclimated nonAM plants exhibited higher rates of R than their warm-grown nonAM counterparts. By contrast, chilling had a negligible effect on R of AM-plants. Thus, AM plants exhibited less cold acclimation than their nonAM counterparts. * Overall, these results highlight the way in which AM colonization alters the underlying components of respiratory metabolism and the response of root R to sustained changes in growth temperature.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
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