Expression profiles of cell-wall related genes vary broadly between two common maize inbreds during stem development

Table 1 Putative orthologous expression of maize and Arabidopsis cell wall-related genes during elongation, transitional and secondary wall stages of stem development

Expression	Secondary/Elongation	Maize	Expression	Putative	Ortholog
Category	Ratio¹	Genes	Fraction	Arabidopsis	Fraction³
				Orthologs²
Elongation	≤ 1.04	323	0.47	275	0.56³
Transitional	1.05–1.94	171	0.25	–	–
Secondary	≥1.95	199	0.29	39	0.20
Total Expressed⁴		693(854)	–	314	–
Unexpressed⁴		546(385)	–	–	–
Total Genes		1239

¹Ratio of transcripts from rind tissue of Internodes 3 through 5 (Secondary): Internodes 8 and 9 (Elongation) of genes expressed at ≥500 reads per 20 M
²Number of potential Arabidopsis orthologs among maize genes expressed with ≥500 reads per 20 M
³Fraction of expressed maize genes from elongation and transitional expression that have putative Arabidopsis orthologs
⁴Total genes expressed with ≥500 reads per 20 M. In parentheses are the total genes expressed with ≥95 reads per 20 M

ISSN: 1471-2164