摘要
2006年夏季,在台湾海峡南部上升流区调查了亮氨酸氨肽酶活性(LAPA)的分布,跟踪分析了上升流过程中该酶活性的变动规律,探讨了环境因子对该海区LAPA的影响及水华过程中亮氨酸氨肽酶的应对机制。结果表明,台湾海峡南部近岸区的LAPA明显高于浅滩区和陆架边缘区,推测溶解有机氮(DON)是影响LAPA的主要因素。上升流过程中,LAPA呈现递增趋势(尤其是表层),在垂直方向上的分布总体表现为表层>10m>15m以深,随着水华的发展,LAPA逐渐升高,浮游植物水华后期产生的大量DON,可诱导亮氨酸氨肽酶表达至最大值。
In the southern Taiwan Straits in summer 2006, distribution of leucine aminopeptidase activity （LAPA） and its variations during the upwelling were investigated to analyze the main factors influencing LAPA distribution and response of leucine aminopeptidase to algal bloom. The results showed that LAPA was higher at coastal waters than that in the Taiwan Bank and offshore waters. Dissolved organic nitrogen （DON） might be the main factor influencing LAPA. LAPA increased during the upwelling, and decreased vertically from the surface, 10 m and below 15 m in depth. LAPA was getting higher during the development of algal bloom. Abundant DON due to the death of phytoplankton in late algal bloom might induce the synthesis of leucine aminopeptidase.
出处
《海洋科学》
CAS
CSCD
北大核心
2008年第12期42-46,共5页
Marine Sciences
基金
国家973计划项目(2006CB400604)
国家自然科学基金项目(40576055,40776081)
关键词
亮氨酸氨肽酶
台湾海峡
上升流
水华
Leucine aminopeptidase
Taiwan Strait
upwelling
algal bloom
