Photosynthetic performance and resistance to photoinhibition of Zea mays L Leaves grown at sub-optimal temperature

被引:75
作者
Haldimann, P [1 ]
Fracheboud, Y [1 ]
Stamp, P [1 ]
机构
[1] SWISS FED INST TECHNOL, INST PLANT SCI, CH-8092 ZURICH, SWITZERLAND
关键词
Zea mays; chlorophyll a fluorescence; low growth temperature; maize; photoinhibition; photosynthetic apparatus; xanthophyll cycle;
D O I
10.1111/j.1365-3040.1996.tb00229.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The performance of the photosynthetic apparatus was examined in the third leaves of Zea mays L. seedlings grown at near-optimal (25 degrees C) or at sub-optimal (15 degrees C) temperature by measuring chiorophyll (Chl) a fluorescence parameters and oxygen evolution in different temperature and light conditions. In leaf tissue grown at 25 and 15 degrees C, the quantum yield of PSII electron transport (phi(PSII)) and the rate of O-2 evolution decreased with decreasing temperature (from 25 to 4 degrees C) at a photon nux density of 125 mu mol m(-2) s(-1). In leaves grown at 25 degrees C, the decrease of phi(PSII) correlated with a decrease of photochemical Chl fluorescence quenching (g(P)), whereas in leaves grown at 15 degrees C q(P) was largely insensitive to the temperature decrease. Compared with leaves grown at 25 degrees C, leaves grown at 15 degrees C were also able to maintain a higher fraction of oxidized to reduced Q(A) (greater q(P)) at high photon flux densities (up to 2000 mu mol m(-2) s(-1)), particularly when the measurements were performed at high temperature (25 degrees C). With decreasing temperature and/or increasing light intensity, leaves grown at 15 degrees C exhibited a substantial quenching of the dark level of fluorescence F-0 (q(0)), whereas this type of quenching was virtually absent in leaves grown at 25 degrees C. Furthermore, leaves grown at 15 degrees C were able to recover faster from photoinhibition of photosynthesis after a photoinhibitory treatment (1200 mu mol m(-2) s(-1) at 25, 15 or 6 degrees C for 8 h) than leaves grown at 25 degrees C. The results suggest that, in spite of having a low photosynthetic capacity, Z. mays leaves grown at sub-optimal temperature possess efficient mechanisms of energy dissipation which enable them to cope better with photoinhibition than leaves grown at near-optimal temperature. It is suggested that the resistance of Z. mays leaves grown at 15 degrees C to photoinhibition is related to the higher content of carotenoids of the xanthophyll cycle (violaxanthin + antheraxanthin + zeaxanthin) measured in these leaves than in leaves grown at 25 degrees C.
引用
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页码:85 / 92
页数:8
相关论文
共 40 条
[1]  
BAKER NR, 1988, SYM SOC EXP BIOL, V42, P347
[2]   ENERGY-DEPENDENT QUENCHING OF DARK-LEVEL CHLOROPHYLL FLUORESCENCE IN INTACT LEAVES [J].
BILGER, W ;
SCHREIBER, U .
PHOTOSYNTHESIS RESEARCH, 1986, 10 (03) :303-308
[3]   LOW-TEMPERATURE LIMITATIONS OF PHOTOSYNTHESIS IN 3 TROPICAL VIGNA SPECIES - A CHLOROPHYLL FLUORESCENCE STUDY [J].
BRUGGEMANN, W .
PHOTOSYNTHESIS RESEARCH, 1992, 34 (02) :301-310
[4]   CAROTENOIDS AND PHOTOPROTECTION IN PLANTS - A ROLE FOR THE XANTHOPHYLL ZEAXANTHIN [J].
DEMMIGADAMS, B .
BIOCHIMICA ET BIOPHYSICA ACTA, 1990, 1020 (01) :1-24
[5]   LIGHT RESPONSE OF CO2 ASSIMILATION, DISSIPATION OF EXCESS EXCITATION-ENERGY, AND ZEAXANTHIN CONTENT OF SUN AND SHADE LEAVES [J].
DEMMIGADAMS, B ;
WINTER, K ;
KRUGER, A ;
CZYGAN, FC .
PLANT PHYSIOLOGY, 1989, 90 (03) :881-886
[6]   CAN CO2 ASSIMILATION IN MAIZE LEAVES BE PREDICTED ACCURATELY FROM CHLOROPHYLL FLUORESCENCE ANALYSIS [J].
EDWARDS, GE ;
BAKER, NR .
PHOTOSYNTHESIS RESEARCH, 1993, 37 (02) :89-102
[7]  
Farage P. K., 1987, Progress in photosynthesis research. Volume 4.., P139
[8]   THE RELATIONSHIP BETWEEN THE QUANTUM YIELD OF PHOTOSYNTHETIC ELECTRON-TRANSPORT AND QUENCHING OF CHLOROPHYLL FLUORESCENCE [J].
GENTY, B ;
BRIANTAIS, JM ;
BAKER, NR .
BIOCHIMICA ET BIOPHYSICA ACTA, 1989, 990 (01) :87-92
[9]   PHOTOINHIBITION OF PHOTOSYNTHESIS AND ITS RECOVERY IN 2 MAIZE HYBRIDS VARYING IN LOW-TEMPERATURE TOLERANCE [J].
GREER, DH ;
HARDACRE, AK .
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY, 1989, 16 (02) :189-198
[10]  
HAVAUX M, 1987, PLANT PHYSIOL BIOCH, V25, P735