Diurnal cycle of chlorophyll fluorescence in Phalaenopsis

被引：18

作者：

Pollet, B. ^{[1
]}

Steppe, K. ^{[1
]}

van Labeke, M-C. ^{[2
]}

Lemeur, R. ^{[1
]}

机构：

[1] Univ Ghent, Plant Ecol Lab, Dept Appl Ecol & Environm Biol, B-9000 Ghent, Belgium

[2] Univ Ghent, Dept Plant Prod, B-9000 Ghent, Belgium

来源：

PHOTOSYNTHETICA | 2009年 / 47卷 / 02期

关键词：

Crassulacean Acid Metabolism (CAM); irradiance; photosynthesis; temperature; CRASSULACEAN ACID METABOLISM; ENERGY-DISSIPATION; REDUCTION STATE; CAM;

D O I：

10.1007/s11099-009-0048-x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Chlorophyll (Chl) fluorescence of warm day/cool night temperature exposed Phalaenopsis plants was measured hourly during 48 h to study the simultaneous temperature and irradiance response of the photosynthetic physiology. The daily pattern of fluorescence kinetics showed abrupt changes of photochemical quenching (q(P)), non-photochemical quenching (NPQ) and quantum yield of photosystem II electron transport (I broken vertical bar(PSII)) upon transition from day to night and vice versa. During the day, the course of I broken vertical bar(PSII) and NPQ was related to the air temperature pattern, while maximum quantum efficiency of PSII photochemistry (F-v/F-m) revealed a rather light dependent response. Information on these daily dynamics in fluorescence kinetics is important with respect to meaningful data collection and interpretation.

引用

页码：309 / 312

页数：4

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