Table 1. Functional genes encoded by the sweet potato cp genome (72 single-copy genes and 11 two-copy genes).
Groups | Functional System | Num | Gene names |
---|---|---|---|
Photosynthesis | Photosystem I | 7 | psaA [ b ], psaB, psaC, psaI, psaJ, ycf3 [ c ], ycf4 |
Photosystem II | 15 | psbA, psbB, psbC, psbD, psbE, psbF, psbG, psbH, psbI, psbJ, psbK, psbL, psbM, psbN, psbT [ b ] | |
Cytochromeb6/f complex | 6 | petA, petB, petD, petG, petL, petN | |
ATP synthase | 6 | atpA, atpB, atpE, atpF [ b ], atpH, atpI | |
Calvin clycle | 1 | rbcL | |
C-type cytochrome synthesis | 1 | ccsA | |
Chloro-respiration | NADH oxidoreductase | 11 | ndhA [ b ], ndhB [ a , b ], ndhC, ndhD, ndhE, ndhF, ndhG, ndhH [ a ], ndhI, ndhJ, ndhK |
Expression machinery | RNA polymerase | 4 | rpoA, rpoB, rpoC1 [ b ], rpoC2 |
ribosomal large subunit | 9 | rpl14, rpl16, rpl2, rpl20, rpl22, rpl23, rpl32, rpl33, rpl36 | |
ribosomal small subunit | 12 | rps2, rps3, rps4, rps7 [ a ], rps8, rps11, rps12 [ a , b , d ], rps14, rps15 [ a ], rps16, rps18, rps19 | |
maturase K | 1 | matK | |
metabolic pathway | acetyl-CoA carboxylase carboxyltransferase | 1 | accD |
clp protease proteolytic subunit | 1 | clpP | |
chloroplast envelope membrane protein | 1 | cemA | |
pseudogenes | unknown functions | 7 | ycf2 [ a ], ycf15 [ a ], ycf68 [ a ], lhbA, orf42 [ a ], orf56 [ a , b ], orf188 [ a ] |
Superscript
[a] means the gene in the IR region with two copies;
[b] means the gene contains a single intron;
[c] means the gene contains two introns;
[d] means the gene divided into two independent transcription units.