Conserved and species-specific oxylipin pathways in the wound-activated chemical defense of the noninvasive red alga Gracilaria chilensis and the invasive Gracilaria vermiculophylla.
Conserved and species-specific oxylipin pathways in the wound-activated chemical defense of the noninvasive red alga Gracilaria chilensis and the invasive Gracilaria vermiculophylla.
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DOI：
10.3762/bjoc.8.30
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发表时间：
2012
影响因子：
2.7
通讯作者：
Pohnert G
中科院分区：
文献类型：
--
作者：
Rempt M;Weinberger F;Grosser K;Pohnert G
研究了入侵红藻的化学防御作用，并将其与非入侵红藻进行了比较。这两个物种都依赖于伤口激活的化学防御，这使得它们对食草海螺Echinolittorina peruviana的吸引力降低。采用lc - esims代谢谱法对两种植物的化学应激反应进行了监测，揭示了它们的共性和差异。这两种藻类都依赖于脂氧合酶介导的花生四烯酸向已知和新型氧脂质的快速转化。常见的产物是7,8-二羟基二碳四烯酸和一种具有不寻常γ-内酯片段的新型类二十烷酸。几种前列腺素主要由入侵种形成。研究了其中一些代谢物在含有相应氧化脂质的人工食品上的附着作用。这两种藻类都有7,8-二羟基二碳四烯酸来防御这种一般食草动物，而前列腺素和新型氧化脂素在自然浓度下是无活性的。本文讨论了不同的氧脂素在江蓠入侵电位中的作用。
Chemical defense of the invasive red alga Gracilaria vermiculophylla has been studied and compared to that of the noninvasive but related Gracilaria chilensis. Both species rely on a wound-activated chemical defense that makes them less attractive to the herbivorous sea snail Echinolittorina peruviana. The chemical stress response of both species was monitored by LC–ESIMS-based metabolic profiling and revealed commonalities and differences. Both algae rely on a rapid lipoxygenase mediated transformation of arachidonic acid to known and novel oxylipins. Common products are 7,8-dihydroxyeicosatetraenoic acid and a novel eicosanoid with an unusual γ-lactone moiety. Several prostaglandins were predominantly formed by the invasive species. The role of some of these metabolites was investigated by surveying the attachment of E. peruviana on artificial food containing the respective oxylipins. Both algae species are defended against this general herbivore by 7,8-dihydroxyeicosatetraenoic acid, whereas the prostaglandins and the novel oxylipins were inactive at naturally occurring concentrations. The role of different oxylipins in the invasive potential of Gracilaria spp. is discussed.
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影响因子：
5
作者：
Kanamoto, Hirosuke;Takemura, Miho;Ohyama, Kanji
通讯作者：
Ohyama, Kanji
影响因子：
1.8
作者：
BOLAND, W;SIELER, C;FEIGEL, M
通讯作者：
FEIGEL, M
影响因子：
16.6
作者：
Rempt, Martin;Pohnert, Georg
通讯作者：
Pohnert, Georg
影响因子：
4.1
作者：
Sajiki, J;Kakimi, H
通讯作者：
Kakimi, H
影响因子：
--
作者：
Hidalgo, Fernando J.;Firstater, Fausto N.;Iribarne, Oscar O.
通讯作者：
Iribarne, Oscar O.