The Ecological Significance of Mycosporine‐Like Amino Acids in Algae
The Ecological Significance of Mycosporine‐Like Amino Acids in Algae
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DOI：
10.1046/j.1529-8817.38.s1.28.x
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发表时间：
2002-06
影响因子：
2.9
通讯作者：
L. Franklin
中科院分区：
文献类型：
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作者：
L. Franklin
类菌孢素氨基酸（MAAs）与藻类生理生态和环境之间的联系可以从两个方面来看待。MAA的UV吸收光谱使其成为UV屏蔽化合物的主要候选物，并且事实上，许多研究表明，高浓度的MAA与细胞过程免受UV损伤的不同程度的保护相关。因此，可以说，陆地、真滨海和亚滨海藻类群落的结构部分取决于它们合成有效数量的甲基丙烯酸的能力。这一假设的推论可能包括这样的命题，即那些不能合成MAA的物种将被排除在含有紫外线的环境之外，而紫外线是触发MAA合成所必需的。然而，许多研究表明，MAA合成的触发因素不一定包括暴露于紫外线，但可能包括氮的相对可用性，渗透胁迫或高水平的光合有效辐射。此外，对这些因素的反应可能会随着其他环境条件的变化而变化。这些问题将讨论相对于阐明MAA合成的主开关。
The links among mycosporine-like amino acids (MAAs), algal physiological ecology, and the environment may be viewed from two sides. The UV-absorption spectra of MAAs make them prime candidates for UV-screening compounds, and indeed, numerous studies have shown that a high concentration of MAAs is correlated with various degrees of protection of cellular processes from UV damage. Thus, it might be said that the structure of terrestrial, eulittoral and sublittoral algal communities depends in part on their ability to synthesize effective quantities of MAAs. Corollaries to this hypothesis might include the proposition that those species incapable of synthesizing MAAs will be excluded from UV-containing environments, and that UV is necessary to trigger MAA synthesis. However, a number of studies have demonstrated that triggers of MAA synthesis need not include exposure to UV, but may include the relative availability of nitrogen, osmotic stress, or high levels of photosynthetically active radiation. Furthermore, the response to these factors may vary as a function of other environmental conditions. These issues will be discussed with respect to elucidating the master switch for MAA synthesis.