THE INTERACTION BETWEEN INORGANIC CARBON ACQUISITION AND LIGHT SUPPLY IN PALMARIA-PALMATA (RHODOPHYTA)

被引:62
作者
KUBLER, JE
RAVEN, JA
机构
[1] Department of Biological Sciences, University of Dundee, Dundee
关键词
CO2; HCO3-; LIGHT LIMITATION; PALMARIA PALMATA; PHOTOSYNTHESIS; RHODOPHYTA; STABLE CARBON ISOTOPES;
D O I
10.1111/j.0022-3646.1995.00369.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The dependence of the carbon concentrating mechanism of Palmaria palmata (L.) Kuntze on the growth light level was examined 1) to determine whether or not there is a threshold photon flux density (PFD) at which the inorganic carbon uptake mechanism can operate and 2) to attempt to quantify the relative energetic costs of acclimation to the two different limiting factors, PFD and dissolved inorganic carbon (DIC) concentration. Plants were grown at six PFDs: 5, 25, 50, 75, 95, and 125 mu mol photons . m(-2) . s(-1). Growth rates increased with increasing PFD from from 5 to 50 mu mol photons . m(-2) . s(-1) and were light-saturated at 75, 95, and 125 mu mol . photons m(-2) . s(-1). Values of delta(13)C increased continuously, with increasing growth PFD and did not saturate over the range of light bevels tested. Time-resolved fluorescence characteristics indicated a progressive photoacclimation below 50 mu mol photons . m(-2) . s(-1). Analysis of chlorophyll fluorescence induction showed three levels of light use efficiency associated with growth at 5 or 25, 50, and >75 mu mol photons . m(-2) . s(-1). The light-harvesting efficiency was inversely proportional to the effectiveness of DIC acquisition in plants grown at the six PFDs. These data were interpreted to indicate that there is a physiological tradeoff between photosynthetic efficiency and bicarbonate use in this species.
引用
收藏
页码:369 / 375
页数:7
相关论文
共 36 条
[1]   PHYSIOLOGICAL AND MORPHOLOGICAL RESPONSES OF THE SEAGRASS ZOSTERA-CAPRICORNI ASCHERS TO LIGHT-INTENSITY [J].
ABAL, EG ;
LONERAGAN, N ;
BOWEN, P ;
PERRY, CJ ;
UDY, JW ;
DENNISON, WC .
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 1994, 178 (01) :113-129
[2]  
BEARDALL J, 1991, J PLANKTON RES S, V13, P133
[3]   AN ONLINE SYSTEM FOR MEASURING PHOTOSYNTHETIC CHARACTERISTICS VIA AN OXYGEN-ELECTRODE [J].
BENZION, M ;
DUBINSKY, Z .
JOURNAL OF PLANKTON RESEARCH, 1988, 10 (03) :555-558
[4]  
BOLHARNORDENKAM, 1993, PHOTOSYNTHESIS PRODU, P193
[5]  
COLMAN B, 1985, INORGANIC CARBON UPT, P97
[6]   COMPARISON OF SOLVENTS FOR EXTRACTING CHLOROPHYLLS FROM MARINE MACROPHYTES [J].
DUNCAN, MJ ;
HARRISON, PJ .
BOTANICA MARINA, 1982, 25 (09) :445-447
[7]  
EVANS JR, 1993, PLANTA, V189, P191, DOI 10.1007/BF00195076
[8]   PHOTOSYNTHETIC LIGHT UTILIZATION EFFICIENCY, PHOTOSYSTEM-II HETEROGENEITY, AND FLUORESCENCE QUENCHING IN CHLAMYDOMONAS-REINHARDTII DURING THE INDUCTION OF THE CO-2-CONCENTRATING MECHANISM [J].
FALK, S ;
PALMQVIST, K .
PLANT PHYSIOLOGY, 1992, 100 (02) :685-691
[9]   ACCLIMATION TO SPECTRAL IRRADIANCE IN ALGAE [J].
FALKOWSKI, PG ;
LAROCHE, J .
JOURNAL OF PHYCOLOGY, 1991, 27 (01) :8-14
[10]   DAILY COURSE OF PHOTOSYNTHESIS AND PHOTOINHIBITION IN MARINE MACROALGAE INVESTIGATED IN THE LABORATORY AND FIELD [J].
HANELT, D ;
HUPPERTZ, K ;
NULTSCH, W .
MARINE ECOLOGY PROGRESS SERIES, 1993, 97 (01) :31-37