Table 2.
Phacaceae pt genomes twintron analysis.
| Twintron Site | D. spathirhyncha | L. ovum | L. playfairiana | L. steinii | L. tripteris (MI) | L. tripteris (UTEX) | P. inflexus | P. pleuronectes |
|---|---|---|---|---|---|---|---|---|
| atpE (intron1) | N | — | N | N | N | N | — | N |
| petB (intron1) | Y[26,4] | N | Y[9,1] | Y[19,2] | Y[3,1] | Y[3,1] | Y[10,2] | N |
| psbC (intron1/Eg.2/Ls.2/Pp.2) | Y | Y | Y | Y | NH | NH | NH | Y |
| psbC intron2/Eg.4/Ls.3/Lt.1/Pi.1/Pp.3)a | Y[3,1] | NH | Y | Y | Y | Y | Y[7,2] | Y |
| psbD (Eg.1) | NH | NH | NH | NH | NH | NH | NH | NH |
| psbD (Eg.8) | NH | NH | NH | NH | NH | NH | NH | NH |
| psbF (Eg.1) | — | — | — | — | — | — | — | — |
| psbK (intron2/Lo.1/Lt.1Pi.1/) | — | N | N | N | Y* | Y | N | N |
| psbT (intron1) | N | N | N | N | N | N | N | N |
| rpl16 (intron3/Pi.2) | N | N | N | N | N | N | N | N |
| rpoC1 (intron1) | N | N | N | N | N | N | N | N |
| rpoC1 (intron3) | NH | N | N | N | N | N | NH | N |
| rpoC1 (intron11/D.10/Lo.9/Ls.9/Pi.5) | N | NH | NH | N | NH | NH | N | NH |
| rps3 (intron1) | — | — | N | N | N | N | NH | N |
| rps18 (intron2) | Y* | N | N | N | N | N | N | Y[1,2] |
Twintrons listed with common external intron followed by any deviation; number after the period corresponds to intron number for that taxon – D. = D. spathirhyncha, Eg. = E. gracilis, Lo. = L. ovum, Ls. = L. steinii, Lt. = L. tripteris, Pi. = P. inflexus, Pi. = P. pleuronectes. Group II twintrons in bold; all others are group III twintrons. N = No twintron found; NH = Non-Homologous external intron; Y = Potential twintron present [number of potential 5′ insertion sites, number of group III 3′ motifs]; —No intron in gene; *Putative twintron, <88 bp, asuggested ancestral intron containing intron-encoded ycf13.