海洋科学2016，Vol.40Issue(10)：1-7,7.DOI:10.11759/hykx20151204001
杜氏盐藻生长及PSⅡ对不同磷源的响应
Response of growth and Photosystem Ⅱof Dunaliella salina on different phosphorus sources
摘要
Abstract
The effects on the growth and PSⅡ of Dunaliella salinaunder inorganic and organic phosphorus sources, including NaH2PO4,ATP, sodium β-glycerophosphate (G-P), and D-Glucose 6-phosphate (D-G-6-P), were investigated. The results showed thatD. salina could grow rapidly under ATP and NaH2PO4; the maximum growth rate (μmax) was 0.736±0.0158 and 0.667±0.0553 per day, respectively. However, a hysteresis phenomenon was dis-covered under G-P and D-G-6-P, and theμmax were 0.232±0.0114 and 0.31±0.0077 per day respectively, which was markedly lower than in the ATP and NaH2PO4 controls (P<0.05). The value of ETRmax andIk under ATP and NaH2PO4 were significantly higher than those in the G-P and D-G-6-P controls (P<0.05), while the value of NPQ was the reverse. JIP test parameters showed that ABS/RC, TR0/RC, andΦP0 did not differ significantly among groups (P>0.05); however, DI0/RC was increased, whereas ψ 0 and Φ E0 were decreased significantly under G-P and D-G-6-P conditions (P<0.05). These results demonstrated that RC could close partially, RC/Cso decreased, electron transport on the acceptor side of photosystem Ⅱ was blocked, and the efficiency of dissipation of energy increased when the phosphorus sources were G-P and D-G-6-P. In conclusion,D. salina could utilize both dissolved inorganic phosphate (DIP) and dissolved organic phosphorus (DOP), and ATP had a greater effect on growth than other or-ganic phosphorus sources, which was reflected in the growth in the logarithmic phase at the shortest time and the significant increase in biomass in the presence of ATP (P<0.05).关键词
杜氏盐藻(Dunaliella salina)/磷/叶绿素荧光/PSⅡ/生长Key words
Dunaliella salina/phosphorus/chlorophyll fluorescence/photosystemⅡ (PSⅡ)/Growth分类
轻工纺织引用本文复制引用
杨宋琪,史邵华,王丽娟,徐卫民,罗光宏..杜氏盐藻生长及PSⅡ对不同磷源的响应[J].海洋科学,2016,40(10):1-7,7.基金项目
甘肃省第九批科技计划项目(1009FTGG017) （1009FTGG017）
甘肃省科技支撑计划—社会发展类项目(1604FKC090) The ninth Batch of Science and Technology Planning Pro-jects, No. 1009FTGG017 （1604FKC090）
Gansu Provincial Science and Technology Plan-ning-Social Development Project, No.1604FKC090 （）
