Photosynthetic responses of Betula ermanii to environmental stress

TABATA, Azusa, Kiyomi ONO, Akihiro SUMIDA, Kamil LÁSKA a 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, s. 88-88. ISBN 80-210-3762-8.

Základní údaje

Originální název

Photosynthetic responses of Betula ermanii to environmental stress

Název česky

Fotosyntetické reakce Betula ermanii na různé ekologické podmínky

Autoři

TABATA, Azusa (392 Japonsko), Kiyomi ONO (392 Japonsko), Akihiro SUMIDA (392 Japonsko), Kamil LÁSKA (203 Česká republika, garant) a Toshihiko HARA (392 Japonsko)

Vydání

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

Nakladatel

Masarykova univerzita, Brno

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Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Přírodovědecká fakulta

ISBN

80-210-3762-8

Klíčová slova anglicky

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

Štítky

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

Příznaky

Mezinárodní význam, Recenzováno

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Anotace

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.

Česky

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.