The polyphenol oxidase gene family in land plants: Lineage-specific duplication and expansion

BMC Genomics

Table 1 Number of putative PPO genes identified in available Viridiplantae genomes

Species		Estimated Genome Size (Mb)^a	PPO Genes^b
Chlorophytes
green algae (unicellular)	Chlamydomonas reinhardtii*	120	0
	Micromonas pullisia	15	0
	Ostreococcus lucimarinus	13	0
	Ostreococcus tauri *	12	0
(multicellular)	Volvox carteri*	120	0
Bryophytes
moss	Physcomitrella patens*	500	13
Lycophytes
spike moss	Selaginella moellendorffii	100	11
Monocotyledonous Anthophytes
purple false brome	Brachypodium distachyon*	355	6
rice	Oryza sativa*	466	2
foxtail millet	Setaria italica	490	4
cereal grass	Sorghum bicolor*	760	8
maize	Zea mays*	2400	6
Eudicotyledonous Anthophytes
blue columbine	Aquilegia coerulea	302	7
lyrate rockcress	Arabidopsis lyrata	230	0
thale cress	Arabidopsis thaliana*	125	0
papaya	Carica papaya*	372	4
cucumber	Cucumis sativus*	367	1
soybean	Glycine max*	1200	11
cassava	Manihot esculenta	760	1
barrel medic	Medicago truncatula	500	4
monkey flower	Mimulus guttatus	430	9
black poplar	Populus trichocarpa*	480	11
peach	Prunus persica	290	4
castor bean	Ricinus communis*	400	1
grapevine	Vitis vinifera*	500	4

^a Estimated genome sizes as indicated in NCBI (http://0-www-ncbi-nlm-nih-gov.brum.beds.ac.uk/genomeprj).
^b Denotes minimum number of PPO genes as identified from this analysis. Additional putative functional PPO gene models with discrepancies were identified for some genomes, but were excluded from this. For P. trichocarpa, up to 11 putative functional PPO genes have been identified.
* Indicates genomes described in a publication: A. thaliana[25], B. distachyon[26], C. papaya[27], C. reinhardtii[28], C. sativus[29], G. max[30], O. sativa[31], O. tauri[32], P. patens[33], P. trichocarpa[34], R. communis[35], S. bicolor[36], V. vinifera[37], V. carteri[38] and Z. mays[39].

ISSN: 1471-2164