Photosynthetic responses of Betula ermanii to environmental stress

TABATA, Azusa, Kiyomi ONO, Akihiro SUMIDA, Kamil LÁSKA and Toshihiko HARA. Photosynthetic responses of Betula ermanii to environmental stress. In PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research. Brno: Masarykova univerzita, Brno, 2005, p. 88-88. ISBN 80-210-3762-8.

Basic information

Original name

Photosynthetic responses of Betula ermanii to environmental stress

Name in Czech

Fotosyntetické reakce Betula ermanii na různé ekologické podmínky

Authors

TABATA, Azusa (392 Japan), Kiyomi ONO (392 Japan), Akihiro SUMIDA (392 Japan), Kamil LÁSKA (203 Czech Republic, guarantor) and Toshihiko HARA (392 Japan)

Edition

Brno, PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research, p. 88-88, 1 pp. 2005

Publisher

Masarykova univerzita, Brno

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Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Science

ISBN

80-210-3762-8

Keywords in English

photoinhibition; xanthophyll cycle; birch forest; understory dwarf bamboo; environmental stress; competition;

Tags

birch forest, competition, environmental stress, photoinhibition, understory dwarf bamboo, xanthophyll cycle

Tags

International impact, Reviewed

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Abstract

V originále

The effects of understory dwarf bamboo (Sasa kurilensis) on the growth of overstory trees were studied in a dense secondary forest of Betula ermanii in northern Japan. Two plots were established in a dense Betula ermanii forest with Sasa in the understory, and Sasa was removed in one plot (removal plot) and Sasa was intact in the other plot (Sasa plot). Leaves of Betula ermanii in the Sasa plot have higher CO2 assimilation rates and larger area. Values of maximum quantum yield of PSII (Fv/Fm) are used as the index of photoinhibition. Decreases in Fv/Fm are observed neither in removal plot nor in Sasa plot. Excess excitation energy is dissipated as heat by de-epoxidation in xanthophyll cycle. The ratios of deepoxidation in xanthophyll cycle were high regardless of the presence/absence of Sasa. Even in the enzyme activities of the enzymatic antioxidant system, any difference was not seen.

In Czech

The effects of understory dwarf bamboo (Sasa kurilensis) on the growth of overstory trees were studied in a dense secondary forest of Betula ermanii in northern Japan. Two plots were established in a dense Betula ermanii forest with Sasa in the understory, and Sasa was removed in one plot (removal plot) and Sasa was intact in the other plot (Sasa plot). Leaves of Betula ermanii in the Sasa plot have higher CO2 assimilation rates and larger area. Values of maximum quantum yield of PSII (Fv/Fm) are used as the index of photoinhibition. Decreases in Fv/Fm are observed neither in removal plot nor in Sasa plot. Excess excitation energy is dissipated as heat by de-epoxidation in xanthophyll cycle. The ratios of deepoxidation in xanthophyll cycle were high regardless of the presence/absence of Sasa. Even in the enzyme activities of the enzymatic antioxidant system, any difference was not seen.