Biochemical responses and photosynthetic performance of Gracilaria sp (Rhodophyta) from Cadiz, Spain, cultured under different inorganic carbon and nitrogen levels

被引:52
作者
Andria, JR [1 ]
Vergara, JJ [1 ]
Perez-Llorens, JL [1 ]
机构
[1] Univ Cadiz, Fac Ciencias Mar, Dept Ecol, E-11510 Puerto Real, Cadiz, Spain
关键词
carbon; chemostat; Gracilaria; nitrogen; photosynthesis; phycobiliproteins; Rubisco;
D O I
10.1080/09541449910001718851
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Photosynthetic acclimation and the interactions between carbon (C) and nitrogen (N) metabolism have been studied in the red macroalga Gracilaria sp. from Cadiz, Spain, cultured under different inorganic C and N levers. The use of chemostats and buffered medium allowed continuous restoration of the alkaline reserve and constancy of pH during the experiments. The N:C ratios and phycobiliprotein, chlorophyll a and soluble protein contents deceased when Gracilaria sp. was grown at low N levels. Algae grown in a high inorganic C concentration (5% CO2) displayed a higher soluble carbohydrate concentration and maximum photosynthesis rates but a lower photosynthesic affinity for inorganic C, and lower phycobiliprotein and Rubisco contents, than those cultured at low inorganic C levels (air CO2). The inorganic C enrichment also affected the N uptake and assimilation in Gracilaria sp., causing a decrease in the N uptake rate even under conditions of N sufficiency. These results reflect the significant influence of the inorganic C growth regime on N assimilation in Gracilaria sp.
引用
收藏
页码:497 / 504
页数:8
相关论文
共 42 条
[1]   Mechanisms of inorganic carbon acquisition in Gracilaria gaditana nom. prov. (Rhodophyta) [J].
Andria, JR ;
Pérez-Lloréns, JL ;
Vergara, JJ .
PLANTA, 1999, 208 (04) :564-573
[2]  
[Anonymous], 1983, Nitrogen in the marine envinroment
[3]   Photosynthesis of marine macroalgae and seagrasses in globally changing CO2 environments [J].
Beer, S ;
Koch, E .
MARINE ECOLOGY PROGRESS SERIES, 1996, 141 (1-3) :199-204
[4]  
BEER S, 1985, AUST J MAR FRESH RES, V36, P785
[5]   NITROGEN ALLOCATION AND STORAGE PATTERNS IN GRACILARIA-TIKVAHIAE (RHODOPHYTA) [J].
BIRD, KT ;
HABIG, C ;
DEBUSK, T .
JOURNAL OF PHYCOLOGY, 1982, 18 (03) :344-348
[6]  
BOWES G, 1993, ANNU REV PLANT PHYS, V44, P309, DOI 10.1146/annurev.pp.44.060193.001521
[8]  
BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3
[9]   Photosynthetic acclimation and biochemical responses of Gelidium sesquipedale cultured in chemostats under different qualities of light [J].
Carmona, R ;
Vergara, JJ ;
PerezLlorens, JL ;
Figueroa, FL ;
Niell, FX .
MARINE BIOLOGY, 1996, 127 (01) :25-34
[10]   More efficient plants: A consequence of rising atmospheric CO2? [J].
Drake, BG ;
GonzalezMeler, MA ;
Long, SP .
ANNUAL REVIEW OF PLANT PHYSIOLOGY AND PLANT MOLECULAR BIOLOGY, 1997, 48 :609-639