Growth, biochemical and antioxidant content ofRhodymenia pseudopalmata(Rhodymeniales, Rhodophyta) cultivated under salinity and irradiance treatments
Growth, biochemical and antioxidant content ofRhodymenia pseudopalmata(Rhodymeniales, Rhodophyta) cultivated under salinity and irradiance treatments
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DOI：
10.1007/s10811-017-1085-7
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发表时间：
2017-03
影响因子：
3.3
通讯作者：
Hugo Pliego-Cortés;E. Caamal-Fuentes;J. Montero-Muñoz;Y. Freile-Pelegrín;D. Robledo
中科院分区：
文献类型：
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作者：
Hugo Pliego-Cortés;E. Caamal-Fuentes;J. Montero-Muñoz;Y. Freile-Pelegrín;D. Robledo
在受控实验室条件下研究了红掌红的生长、生化成分和抗氧化能力。将培养物暴露于 20、25、30、35 和 40 psu 的五种盐度下，在三种光合有效辐射 (PAR) 50、100 和 200 μmol 光子 m-2s-1 下。红掌红的每日生长率在 20 psu 和高 PAR 下显着较高，在 40 psu 和低 PAR 下下降。高 PAR 时 Chla 和 PE 含量较低。在高 PAR 和 20 psu 下，碳水化合物含量增加至 54% DW-1。蛋白质含量为 4.9% 至 10.5% DW-1。在R中检测到16个氨基酸。在所测试的实验条件下的拟掌状植物。谷氨酸、脯氨酸和蛋氨酸可能充当渗透调节剂，而组氨酸、蛋氨酸和酪氨酸可能参与R。拟掌红的抗氧化能力。在高PAR和20 psu下生长的拟掌红红，其总酚类化合物的增加量最高。此外，低 PAR 下 20、25 和 40 psu 下的 DPPH 自由基清除活性增加，高 PAR 下 20 psu 下的 DPPH 自由基清除活性增加。这些结果可以部分解释R的能力。拟掌叶藻在潮间带的极端条件下生长及其对海水养殖的适应。
Growth, biochemical composition and antioxidant capacity ofRhodymenia pseudopalmatawere studied under controlled laboratory conditions. Cultures were exposed to five salinities ranging from 20, 25, 30, 35 and 40 psu under three photosynthetic active radiations (PAR) 50, 100 and 200 μmol photons m-2s-1.Rhodymenia pseudopalmatadaily growth rates were significantly higher at 20 psu and high PAR, and decreased at 40 psu and low PAR. Chlaand PE contents were lower at high PAR. The carbohydrate content increased up to 54 % DW-1under high PAR and 20 psu. Protein ranged from 4.9 to 10.5 % DW-1. Sixteen amino acids were detected inR. pseudopalmataunder the experimental conditions tested. Glutamic acid, proline and methionine may act as osmolytes, while histidine, methionine and tyrosine may be involved inR. pseudopalmataantioxidant capacity.Rhodymenia pseudopalmatagrown under high PAR and 20 psu had the highest increase in total phenolic compounds. Moreover, DPPH radical scavenging activity increased at 20, 25 and 40 psu under low PAR, and at 20 psu under high PAR. These results may partly explain the ability ofR. pseudopalmatato grow under extreme conditions at the intertidal and its acclimation for mariculture.