Single phylogenetic origin of ericoid mycorrhizae within the Ericaceae
Single phylogenetic origin of ericoid mycorrhizae within the Ericaceae
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DOI：
10.1139/b96-227
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发表时间：
1996-12-01
期刊：
影响因子：
--
通讯作者：
Cullings, KW
中科院分区：
文献类型：
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作者：
Cullings, KW
杜鹃花科真菌是由真菌和植物组成的复杂生物体，其形成需要植物和真菌的识别和防御系统协同作用产生的酶协同作用和互利相容性。尽管如此，形成这种共生的植物被视为杜鹃花科中的三个独立的科：杜鹃花科，Epacridaceae和Empetraceae。在这项研究中，我使用的解剖学，生理学和共生体的兼容性mycorrhiza（植物根和真菌之间的互利互动）制定的假设，杜鹃花科，Epacridaceae和Empetraceae的杜鹃花菌根形成的植物有一个单一的系统发育起源的杜鹃花科内重合的杜鹃花菌根的出现。我测试了这一假设的简约性分析新产生的和以前发表的部分28 S核糖体RNA基因序列（核）和rbc-L（叶绿体）从GenBank中获得的序列。所有结果支持这一假设，杜鹃花菌根形成的植物有一个单一的系统发育起源，并表示Epacridaceae和Empetraceae应包括在一个广泛定义的杜鹃花科。
Ericoid mycorrhizae are complex organisms consisting of fungal and plant components, and their formation requires enzymatic synergisms and mutualist compatibilities resulting from cooperation of recognition and defense systems of both plant and fungus. Despite this, the plants that form this symbiosis are treated as three separate families in the Ericales: the Ericaceae, the Epacridaceae, and the Empetraceae. In this study, I used the anatomy, physiology, and symbiont compatibility of mycorrhizae (mutualistic interactions between plant roots and fungi) to formulate the hypothesis that the ericoid mycorrhiza-forming plants in the Ericaceae, Epacridaceae, and Empetraceae have a single phylogenetic origin within the Ericaceae coincident with the advent of ericoid mycorrhizae. I tested this hypothesis by parsimony analysis of newly generated and previously published partial 28S ribosomal RNA gene sequences (nuclear) and rbc-L (chloroplast) sequences obtained from GenBank. All results supported the hypothesis that ericoid mycorrhiza-forming plants have a single phylogenetic origin and indicated that the Epacridaceae and Empetraceae should be included within a broadly defined Ericaceae.