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Short-term response...
Short-term responses in maximum quantum yield of PSII (Fv/Fm) to ex situ temperature treatment of populations of bryophytes originating from different sites in Hokkaido, Northern Japan
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- Jägerbrand, Annika, 1972- (författare)
- Statens väg- och transportforskningsinstitut,Miljö, MILJÖ,Hokkaido University,Statens väg- och transportforskningsinstitut, Miljö, MILJÖ
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- Kudo, Gaku (författare)
- Hokkaido University, Sapporo, Japan
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(creator_code:org_t)
- 2016-04-26
- 2016
- Engelska.
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Ingår i: Plants. - : MDPI. - 2223-7747. ; 5:2, s. 455-465
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Abstract
Ämnesord
Stäng
- There is limited knowledge available on the thermal acclimation processes for bryophytes, especially when considering variation between populations or sites. This study investigated whether short-term ex situ thermal acclimation of different populations showed patterns of site dependency and whether the maximum quantum yield of PSII (Fv/Fm) could be used as an indicator of adaptation or temperature stress in two bryophyte species: Pleurozium schreberi (Willd. ex Brid.) Mitt. and Racomitrium lanuginosum (Hedw.) Brid.We sought to test the hypothesis that differences in the ability to acclimate to short-term temperature treatment would be revealed as differences in photosystem II maximum yield (Fv/Fm). Thermal treatments were applied to samples from 12 and 11 populations during 12 or 13 days in growth chambers and comprised: (1) 10/5 °C; (2) 20/10 °C; (3) 25/15 °C; (4) 30/20 °C (12 hours day/night temperature).In Pleurozium schreberi, there were no significant site-dependent differences before or after the experiment, while site dependencies were clearly shown in Racomitrium lanuginosum throughout the study. Fv/Fm in Pleurozium schreberi decreased at the highest and lowest temperature treatments, which can be interpreted as a stress response, but no similar trends were shown by Racomitrium lanuginosum.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Vegetation
- Temperature
- U Science
- U Science
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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