Table 3. Gene contents in the chloroplast genomes of Bulbophyllum pilopetalum, B. pingnanense and B. albociliatum.

Group of genes	Gene names
1 Photosystem I	psaA, psaB, psaC, psaI, psaJ
2 Photosystem II	psbA, psbB, psbC, psbD, psbE, psbF, psbH, psbI, psbJ, psbK, psbL, psbM, psbN, psbT, psbZ
3 Cytochrome b/f complex	petA, petB*, petD*, petG, petL, petN
4 ATP synthase	atpA, atpB, atpE, atpF*, atpH, atpI
5 NADH dehydrogenase	ndhA*, ndhB*(×2), ndhC, ndhD, ndhE, ndhF, ndhG, ndhH, ndhI, ndhJ, ndhK
6 RubisCO large subunit	rbcL
7 RNA polymerase	rpoA, rpoB, rpoC1*, rpoC2
8 Ribosomal proteins(SSU)	rps2, rps3, rps4, rps7(×2), rps8, rps11, rps12**(×2), rps14, rps15, rps16*, rps18, rps19(×2)
9 Ribosomal proteins(LSU)	rpl2(×2), rpl14, rpl16*, rpl20, rpl22, rpl23(×2), rpl32, rpl33, rpl36
10 Other genes	clpP**, matK, accD, ccsA, infA, cemA
11 Proteins of unknown function	ycf1, ycf2(×2), ycf3**, ycf4
12 Ribosomal RNAs	rrn4.5S(×2), rrn5S(×2), rrn16S(×2), rrn23S(×2)
13 Transfer RNAs	trnA-UGC*(×2), trnC-GCA, trnD-GUC, trnE-UUC, trnF-GAA, trnfM-CAU, trnG-GCC, trnG-UCC*, trnH-GUG(×2), trnI-CAU(×2), trnI-GAU*(×2), trnK-UUU*, trnL-CAA(×2), trnL-UAA*, trnL-UAG, trnM-CAU(×2), trnN-GUU(×2), trnP-UGG, trnQ-UUG, trnR-ACG(×2), trnR-UCU, trnS-GCU, trnS-GGA, trnS-UGA, trnT-GGU, trnT-UGU, trnV-GAC(×2), trnV-UAC*, trnW-CCA, trnY-GUA

Notes.

^*Gene containing one intron.

^**Gene containing two introns, (x2) Gene has two copies.