Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids.
Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids.
复制标题
热解菌、杜鹃花科真菌和兰花中的氮和碳增益具有广泛的地理和生态分布。
DOI：
10.1111/j.1469-8137.2007.02065.x
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
D. Read
中科院分区：
文献类型：
--
作者：
K. Zimmer;Nicole A. Hynson;G. Gebauer;E. Allen;M. Allen;D. Read
* 最近的稳定同位素丰度分析表明，一些欧洲的绿色兰花和鹿蹄草（杜鹃花科）是部分真菌异养，利用菌根真菌的有机碳和氮。在这里，我们调查相关物种，以评估其营养模式在不同的森林和气候类型在德国和加州。* 五种绿色类火流星的碳和氮同位素特征，三种绿色兰花和几种专性真菌异养物种（包括完全真菌异养的鹿蹄草Pyrola aphylla），以量化绿色植物从其真菌伙伴中获得的养分，并研究完全真菌异养的鹿蹄草对（13）C和（15）N富集的恒定性。异养植物相对于邻近的自养植物来自不同的分类群和位置。* 所有的绿色类火珊瑚和兰花物种表现出显着的（15）N富集，确认纳入真菌衍生的N化合物，而异养C增益检测只有在低辐照度下，在Orthilia secunda。无叶鹿蹄草的同位素特征与完全真菌异养植物的同位素特征相当。* 它表明，主要是N增益菌根真菌发生在所有分类群体调查在广泛的地理和生态环境。专性真菌异养植物相对于伴生的自养植物的（13）C和（15）N富集被证明是一个相当恒定的参数。
* Stable isotope abundance analyses recently revealed that some European green orchids and pyroloids (Ericaceae) are partially myco-heterotrophic, exploiting mycorrhizal fungi for organic carbon and nitrogen. Here we investigate related species to assess their nutritional mode across various forest and climate types in Germany and California. * C- and N-isotope signatures of five green pyroloids, three green orchids and several obligate myco-heterotrophic species (including the putatively fully myco-heterotrophic Pyrola aphylla) were analysed to quantify the green plants' nutrient gain from their fungal partners and to investigate the constancy of enrichment in (13)C and (15)N of fully myco-heterotrophic plants from diverse taxa and locations relative to neighbouring autotrophic plants. * All green pyroloid and one orchid species showed significant (15)N enrichment, confirming incorporation of fungi-derived N compounds while heterotrophic C gain was detected only under low irradiance in Orthilia secunda. Pyrola aphylla had an isotope signature equivalent to those of fully myco-heterotrophic plants. * It is demonstrated that primarily N gain from mycorrhizal fungi occurred in all taxonomic groups investigated across a wide range of geographical and ecological contexts. The (13)C and (15)N enrichment of obligate myco-heterotrophic plants relative to accompanying autotrophic plants turned out as a fairly constant parameter.