Floral scent emission and new scent volatiles from Acorus (Acoraceae)
Floral scent emission and new scent volatiles from Acorus (Acoraceae)
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DOI：
10.1016/j.bse.2011.12.018
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发表时间：
2012-04-01
影响因子：
1.6
通讯作者：
Toyota, Masao
中科院分区：
文献类型：
--
作者：
Azuma, Hiroshi;Toyota, Masao
人们对单子叶植物的基系Acorus的花学或传粉生物学知之甚少。为了更好地了解菖蒲属植物的生殖生物学，我们研究了菖蒲属植物花香的化学特征。采用气相色谱-质谱联用技术对日本原产石竹（Acorus gramineus）和菖蒲（Acorus calamus）的花叶和顶空挥发物进行了分析。气相色谱-质谱分析结果表明，禾草叶柄释放出相当数量的挥发物，而菖蒲释放出的挥发物与叶片相当。经核磁共振鉴定，禾草的主要花香挥发物为2-（1E， 3z -六二烯基）四氢呋喃（约80-90%）。这种化合物从未在其他地方作为天然产物报道过。这些数据和先前的研究检查了Acorus的生殖生物学表明，A. gramineus似乎是昆虫性的。已知日本菖蒲是不育的（四倍体），这可能解释了其花挥发物释放率降低的原因。(C) 2011 Elsevier Ltd.版权所有。
Little is known about the floral or pollination biology of Acorus, the basal lineage of the monocots. In this study we investigated chemical profiles of the floral scents to better understand the reproductive biology of Acorus. Headspace volatiles emitted from the spadices (flowers) and leaves of Acorus gramineus and Acorus calamus native to Japan were collected and analyzed by GC-MS. 'The GC-MS profiles clearly indicated that the spadix of A. gramineus emitted a considerable amount of volatiles, whereas A. calamus emitted a small amount equivalent to the leaf volatiles. The main floral scent volatile in A. gramineus was 2-(1E,3Z-hexadienyl)tetrahydrofuran (ca. 80-90%) which was identified by NMR analysis. The compound has never been reported elsewhere as a natural product. These data and previous studies examining the reproductive biology of Acorus suggest that A. gramineus seems to be entomophilous. It is known that Japanese A. calamus is sterile (tetraploid), which may explain its reduced emission rate of floral volatiles. (C) 2011 Elsevier Ltd. All rights reserved.