ThechlL (frxC) gene: Phylogenetic distribution in vascular plants and DNA sequence fromPolystichum acrostichoides (Pteridophyta) andSynechococcus sp. 7002 (Cyanobacteria)
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- Burke, D.H., Raubeson, L.A., Alberti, M. et al. Pl Syst Evol (1993) 187: 89. doi:10.1007/BF00994092
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We examinedchlL (frxC) gene evolution using several approaches. Sequences from the chloroplast genome of the fernPolystichum acrostichoides and from the cyanobacteriumSynechococcus sp. 7002 were determined and found to be highly conserved. A complete physical map of the fern chloroplast genome and partial maps of other vascular plant taxa show thatchlL is located primarily in the small single copy region as inMarchantia polymorpha. A survey of a wide variety of non-angiospermous vascular plant DNAs shows thatchlL is widely distributed but has been lost in the pteridophytePsilotum and (presumably independently) within the Gnetalean gymnosperms.
Key wordsCyanobacteria Pteridophyta gymnosperms Synechococcus Polystichum acrostichoides Psilotum Welwitschia chlL (frxC) gene chlorophyll synthesis chloroplast genome DNA sequence
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