Gametophyte phase of commercial kelps, the potential food supplements for essential fatty acids and n-3 polyunsaturated fatty acids
Gametophyte phase of commercial kelps, the potential food supplements for essential fatty acids and n-3 polyunsaturated fatty acids
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DOI：
10.1111/1750-3841.16596
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发表时间：
2023-05-11
影响因子：
3.9
通讯作者：
Liu，Tao
中科院分区：
文献类型：
--
作者：
Geng，Xicheng;Jia，Xuli;Liu，Tao
摘要对于世代交替的异形藻类，在自由生活的生活史中，叶状体阶段和配子体阶段是不同的形态。传统的蔬菜和中草药主要是利用叶状体，而配子体阶段的研究较少。为了解海带、裙带菜和肋肋骨条藻配子体发育阶段的功能性脂类，对海带配子体发育阶段的总脂类（TL）含量、脂肪酸（FA）谱和转录组学进行了分析。在所研究的海带中，配子体阶段的TL含量几乎是叶状体中TL含量的两倍，海带的种类、生活阶段和性别是影响油脂积累的关键因素。配子体发育时期的研究表明，pinnatifidaandC.中肋骨条富含必需FA C18：2n− 6和C18：3 n − 3。帖前结果表明，在日本血吸虫配子体阶段，含有丰富的C20：5 n − 3和C18：4 n − 3，具有理想的n − 6/n− 3多不饱和脂肪酸比例，低于1.0，并且转录组数据显示keysjD 12/15（n− 3）基因在配子体阶段比孢子体阶段部分上调。结果表明，S.实际应用本研究首次报道了海带、裙带菜、中肋骨条藻三种配子体阶段的脂肪酸特征，发现裙带菜、中肋骨条藻三种配子体阶段的脂肪酸特征与海带、裙带菜、中肋骨条藻三种配子体阶段的脂肪酸特征基本一致。海带具有良好的脂肪酸组成，是一种值得进一步开发利用的功能性食品。
AbstractFor heteromorphic algae with alternating generations, the thallus and gametophyte phases are different morphologies in free‐living life history. The thalli are popular used as traditional vegetables and herbal drugs, whereas the gametophyte phases are little involved. To better understand the functional lipids in the gametophyte phase of three commercial kelps,Saccharina japonica,Undaria pinnatifida, andCostaria costata, the contents of total lipids (TLs), fatty acid (FA) profiles, and transcriptomic analysis were performed. For the studied kelps, the TL contents in gametophyte phase were always almost twice more than those in the thallus, and the kelp species, their life stage, and the gender were critical factors affecting lipid accumulation. The gametophyte phases ofU. pinnatifidaandC. costatawere rich in essential FA C18:2n− 6 and C18:3n− 3. TheS. japonicagametophyte phase contained abundant C20:5n− 3 and C18:4n− 3, possessed an ideal ratio ofn− 6/n− 3 polyunsaturated fatty acid below 1.0, and was supported by the transcriptome data which showed that the keysjD12/15(n− 3) gene of gametophyte partially upregulated than sporophyte. The results suggested thatS. japonicagametophyte phase was the worthiest of further development and utilization as a functional food.Practical ApplicationIt is the first report on the fatty acid characteristics of three gametophyte phases ofSaccharina japonica,Undaria pinnatifida, andCostaria costataand find that theS. japonicawas worthy of further development and utilization as a functional food owing to its satisfactory fatty acid composition.