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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
Swedish National Road and Transport Research Institute, Society, environment and transport, Environment. Hokkaido University.ORCID iD: 0000-0001-5322-9827
Hokkaido University.
2016 (English)In: Plants, ISSN 2223-7747, Vol. 5, no 2, 455-465 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2016. Vol. 5, no 2, 455-465 p.
Keyword [en]
Vegetation, Temperature
National Category
Ecology
Research subject
SAB, U Science
Identifiers
URN: urn:nbn:se:vti:diva-11467DOI: 10.3390/plants5020022Scopus ID: 2-s2.0-85005950328OAI: oai:DiVA.org:vti-11467DiVA: diva2:1065640
Available from: 2017-01-16 Created: 2017-01-16 Last updated: 2017-01-24Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf