MOLECULAR INNOVATIONS IN LICHEN SYSTEMATICS - THE USE OF RIBOSOMAL AND INTRON NUCLEOTIDE-SEQUENCES IN THE CLADONIA-CHLOROPHAEA COMPLEX
MOLECULAR INNOVATIONS IN LICHEN SYSTEMATICS - THE USE OF RIBOSOMAL AND INTRON NUCLEOTIDE-SEQUENCES IN THE CLADONIA-CHLOROPHAEA COMPLEX
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DOI：
10.2307/3243859
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发表时间：
1993-09-01
期刊：
影响因子：
0.9
通讯作者：
DEPRIEST, PT
中科院分区：
文献类型：
--
作者：
DEPRIEST, PT
在真菌的Cladonia chlorophaea复杂，核糖体DNA的长度变化的部分原因是，由变量发生的多组I内含子，可能已经移动的在该组的进化过程中。这些潜在的移动的内含子可以作为一个模型，用于检查在其他地衣的核糖体DNA中检测到的变异，也许，作为一个模型，用于检查其他基因，基因型和表型的变异。由于在某些绿色藻类的核糖体DNA中也发现了I组内含子，地衣可能提供了一个很好的系统来寻找内含子在远亲生物之间转移的证据。分子系统学不仅可以改变我们看待地衣的方式，而且地衣可能会改变我们看待分子进化的方式。
In the mycobiont of the Cladonia chlorophaea complex, length variation in the ribosomal DNA is explained, in part, by the variable occurrence of multiple group I introns that may have been mobile during the evolution of this group. These potentially mobile introns can serve as a model for examining the variation detected in the ribosomal DNA from other lichens and, perhaps, as a model for examining variation in other genes, genotypes, and phenotypes. Because group I introns have been found also in the ribosomal DNA of some green algae, lichens may provide a good system to search for evidence of intron transfer between distantly related organisms. Not only can molecular systematics change the way we look at lichens, but lichens may change the way we look at molecular evolution.