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Table 3 Differences between the gene repertoires of Staurastrum, Zygnema, Chaetosphaeridium and Marchantia cpDNAs

From: The complete chloroplast DNA sequences of the charophycean green algae Staurastrum and Zygnema reveal that the chloroplast genome underwent extensive changes during the evolution of the Zygnematales

Genea Staurastrum Zygnema Chaetosphaeridium Marchantia
chlI + + + -
cysA - + - +
cysT - + - +
odpB + + + -
rpl5 - + + -
rpl22 + - + +
rpl32 - - + +
rps16 + + + -
tufA - - +c -
ycf62 + + + -
trnP(ggg) - + + -b
trnS(cga) -b + - -
  1. a Only the conserved genes that are missing in one or more chloroplast genomes are indicated. Plus and minus signs denote the presence and absence of genes, respectively.
  2. b Pseudogenes.
  3. c Chaetosphaeridium tufA could be a pseudogene because its sequence is highly divergent from those of other green plants.