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. 1992 Mar 1;89(5):1856–1860. doi: 10.1073/pnas.89.5.1856

Structural rearrangements of the chloroplast genome provide an important phylogenetic link in ferns.

D B Stein 1, D S Conant 1, M E Ahearn 1, E T Jordan 1, S A Kirch 1, M Hasebe 1, K Iwatsuki 1, M K Tan 1, J A Thomson 1
PMCID: PMC48552  PMID: 1542683

Abstract

The chloroplast genome of most land plants is highly conserved. In contrast, physical and gene mapping studies have revealed a highly rearranged chloroplast genome in species representing four families of ferns. In all four, there has been a rare duplication of the psbA gene and the order of the psbA, 16S, and 23S rRNA genes has been inverted. Our analysis shows that the described rearrangement results from a minimum of two inversions within the inverted repeat. This chloroplast DNA structure provides unambiguous evidence that phylogenetically links families of ferns once thought to belong to different major evolutionary lineages.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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