Effects of temperature and salinity on the growth and biochemical composition of the brown alga Sargassum fusiforme (Fucales, Phaeophyceae)
Effects of temperature and salinity on the growth and biochemical composition of the brown alga Sargassum fusiforme (Fucales, Phaeophyceae)
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DOI：
10.1007/s10811-019-01795-9
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发表时间：
2019-10-01
影响因子：
3.3
通讯作者：
Gong, Qingli
中科院分区：
文献类型：
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作者：
Li, Jingyu;Liu, Yingchao;Gong, Qingli
温度和盐度是影响褐藻生长和生化组成的众所周知的环境因素。在这项研究中，我们进行了培养实验，以测试温度（10，15，和20摄氏度）和盐度（10，20，30，和40 psu）的特定生长率（SGR）和五个化合物（碳，氮，叶绿素（Chl）a，Chl c，和岩藻黄素）的羊栖菜，一个生态和商业上的重要物种。结果表明，温度和盐度对SGR和组织碳、氮含量均有显著影响。在20 ℃和30 psu条件下，日（-1）的最大SGR为6.04%。在10 ℃和30 psu下获得最高的碳组织含量（38.19 +/- 1.01%），而在15 ℃和10 psu下获得最高的氮组织含量（2.78 +/- 0.09%）。温度升高对叶绿素a和叶绿素c含量均有显著的正效应。一个显着的积极影响，增加盐度只发现对叶绿素a含量。在15 ℃和20 psu条件下，叶绿素a和叶绿素c含量最大，分别为0.50 +/- 0.03和0.16 +/- 0.03 mg g（-1）。此外，温度升高对岩藻黄质含量有显著的正效应，盐度升高对岩藻黄质含量有显著的负效应;在15 ℃和10 psu时，岩藻黄质含量最高为2.62 +/- 0.04 mg g（-1）。这些生理数据提供了与S增强相关的有价值的信息。当在受控条件下培养时，梭状芽孢杆菌组合物的生长是有利的。
Temperature and salinity are well-known environmental factors that affect the growth and biochemical composition of brown algae. In this study, we conducted a culture experiment to test the effects of temperature (10, 15, and 20 degrees C) and salinity (10, 20, 30, and 40 psu) on specific growth rates (SGR) and five compounds (carbon, nitrogen, chlorophyll (Chl) a, Chl c, and fucoxanthin) of Sargassum fusiforme, an ecologically and commercially important species. The results showed that both temperature and salinity had significant effects on SGR and the tissue contents of carbon and nitrogen. Maximal SGR of 6.04% day(-1) was achieved at 20 degrees C and 30 psu. The highest tissue content of carbon (38.19 +/- 1.01%) was obtained at 10 degrees C and 30 psu, while that of nitrogen (2.78 +/- 0.09%) was at 15 degrees C and 10 psu. Significant positive effects of increased temperature were found on both Chl a and Chl c contents. A significant positive effect of increased salinity was only found on the Chl a content. The Chl a and Chl c contents were maximized at 0.50 +/- 0.03 and 0.16 +/- 0.03 mg g(-1) at 15 degrees C and 20 psu. In addition, significant positive effect of increased temperature and significant negative effect of increased salinity were detected for the fucoxanthin content; this was at a maximum of 2.62 +/- 0.04 mg g(-1) at 15 degrees C and 10 psu. These physiological data provide valuable information related to the enhancement of S. fusiforme composition when in cultivation under controlled conditions.