Division of Horticultural Plant Physiology, Institute of Plant Physiology, University of Vienna, A-1091, Vienna.
Photosynth Res. 1988 Nov;18(3):287-98. doi: 10.1007/BF00034833.
Prompt chlorophyll a fluorescence kinetics at room temperature were measured from intact spruce needles. The fluorescence signal was recorded after varying light pretreatments. During the winter, induction curves showed characteristic changes in both the initial peak of fluorescence FV/FP (FP-FO/FP) and the steady state level Fdr (FP-FT/FP). Winter stress induced decreases in both values which showed close correlation to the light and temperature pre-history of the plants. In February changes in fluorescence induction indicative of a restoration of photosynthesis were detected and these corresponded to a rise of temperature above zero in combination with low light levels. In March increasing light intensity combined with chilling temperatures induced again decreases of both values of chlorophyll fluorescence induction suggesting the occurrence of photoinhibition.
室温下测量了完整云杉针叶的叶绿素 a 荧光动力学。记录了不同光照预处理后的荧光信号。在冬季,诱导曲线在荧光 FV/FP 的初始峰值(FP-FO/FP)和稳态水平 Fdr(FP-FT/FP)方面均表现出特征性变化。冬季胁迫导致这两个值都降低,这与植物的光照和温度历史密切相关。2 月,检测到光合作用恢复的荧光诱导变化,这与光照水平低的同时温度升高有关。3 月,光照强度增加和寒冷温度再次导致叶绿素荧光诱导的这两个值降低,表明发生了光抑制。