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当前位置: 首页 > 文章 > 三十烷醇对铜藻生长及岩藻黄素含量的影响 水产学报 2019 (4) 1048-1057
Position: Home > Articles > Effects of triacontanol on the growth and fucoxanthin content of Sargassum horneri Journal of Fisheries of China 2019 (4) 1048-1057

三十烷醇对铜藻生长及岩藻黄素含量的影响

作  者：
吕芳;吴海一;丁刚;詹冬梅;郭文
单  位：
山东省海洋生物研究院;青岛市大型海藻工程技术研究中心
关键词：
铜藻;三十烷醇;连续施用;浸泡;生长;岩藻黄素
摘  要：
为探讨三十烷醇对铜藻生长的影响,本研究采用不同浓度(0、0.1、 0.5、1.0和2.0 mg/L)的三十烷醇连续施用20 d,或用三十烷醇浸泡处理24 h后,再恢复正常条件培养20 d,分别测定了铜藻的生长、生理生化指标(光合色素、可溶性蛋白、可溶性糖)以及岩藻黄素含量的变化情况。结果显示,连续施用5 d时,各组藻体的比生长速率(RGR)、叶绿素a(Chl.a)、类胡罗卜素(Car)、可溶性蛋白、可溶性糖的含量均显著高于对照组;15 d时,2.0 mg/L浓度组的铜藻生长受到抑制,各项生理指标均显著下降;20 d时,除了0.1 mg/L浓度组的铜藻生长仍有促进外,其他3个较高浓度的施用组均受到不同程度的抑制,且三十烷醇的浓度越高,抑制作用越明显。经三十烷醇浸泡处理的藻体恢复正常条件培养5 d时,各组藻体的RGR、Chl-a、Car、可溶性蛋白和可溶性糖的含量均显著上升;10 d时,0.5和1.0 mg/L浓度组的铜藻生长速率仍显著高于对照组,但15 d时已与对照组无显著差异,且综合各项生理生化指标,1.0 mg/L组的促进作用最为明显,这种促生长的作用能持续到处理后10 d左右。岩藻黄素的含量除连续施用2.0 mg/L组在实验20 d时低于对照组外,其余各实验组在培养20 d内均显著高于对照组,其中1.0 mg/L三十烷醇浸泡处理24 h恢复培养10 d,可使岩藻黄素的含量提高79.5%。研究表明,连续施用低浓度的三十烷醇(0.1 mg/L) 20 d或以1.0 mg/L三十烷醇每10 d浸泡处理24 h,对铜藻的生长和岩藻黄素的积累有显著的促进作用。
译  名：
Effects of triacontanol on the growth and fucoxanthin content of Sargassum horneri
作  者：
Lü Fang;WU Haiyi;DING Gang;ZHAN Dongmei;GUO Wen;Marine Biology Institute of Shandong Province;Qingdao Macroalgae Engineering Technology Research Center;
关键词：
Sargassum horneri;;triacontanol;;continuous application;;immerse;;growth;;fucoxanthin
摘  要：
In order to investigate the effect of triacontanol on growth of Sargassum horneri, different concentration of triacontanol applied continuously for 20 days, or the thalli were immersed in triacontanol solution at concentration of 0.1, 0.5, 1.0 and 2.0 mg/L) for 24 h and then cultured in normal conditions for 20 days, and then the relative growth rate(RGR), physiological and biochemical indexes(photosynthetic pigment, soluble protein,soluble sugar) and fucoxanthin contents were determined, respectively. The results showed that after continuous application of 5 days, the RGR, chlorophyll a(Chl-a), carotenoid(Car), soluble protein, soluble sugar contents were significantly higher than the control; on the 15~(th) day, the growth of the 2.0 mg/L group was inhibited, and all the physiological indexes decreased significantly; on the 20~(th) day, the growth of the 0.1 mg/L group was still promoted, the other three higher concentration groups were inhibited by different degrees, and the higher concentration of triacontanol, the more obvious inhibitory effect. The immersed group after 5 days of culture, the RGR, Chl-a, Car, soluble protein and soluble sugar contents increased significantly; on the 10 th day, the RGR of0.5 and 1.0 mg/L groups were significantly higher than the control; on the 15 th day, there was no significant difference with the control, and considering the physiological and biochemical indexes, 1.0 mg/L group was the most obvious effective group, and the promotion effect could maintain about 10 days after treatment. Fucoxanthin contents were significantly higher than control in treatment groups except continuous application with 2.0 mg/L triacontanol for 20 days, among which the fucoxanthin content increased 79.5% on the 10 th day after immersed treatment in 1.0 mg/L triacontanol solution for 24 h. Therefore, continuous application of low concentration of triacontanol(0.1 mg/L) or immersed in 1.0 mg/L triacontanol solution for 24 h every 10 days could significantly promote the growth and accumulation of fucoxanthin of S. horneri.

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