PO:0000400 phloem mother cell A cambial initial cell (PO:0000295) which is destined to differentiate into secondary phloem. PMID 16581911 DOF2.4 TAIR locus:2040746 PO:0005848 secondary xylem A portion of xylem (PO:0005352) tissue that develops from a vascular cambium (PO:0005598). PMID 17237351 NAC012 TAIR locus:2035604 PMID 17237351 NST1 TAIR locus:2044360 PMID 17322407 IRX9 TAIR locus:2061748 PMID 17322407 GAUT12 TAIR locus:2157543 PMID 17991630 PARVUS TAIR locus:2016432 PMID 18952777 MYB52 TAIR locus:2030903 PMID 18952777 NAC010 TAIR locus:2032580 PMID 18952777 KNAT7 TAIR locus:2015554 PMID 18952777 AtMYB103 TAIR locus:2195528 PMID 18952777 MYB54 TAIR locus:2206910 PMID 18952777 MYB85 TAIR locus:2132584 PMID 18952777 NAC073 TAIR locus:2121387 PMID 18952777 MYB69 TAIR locus:2119171 PMID 21300919 GATL5 TAIR locus:2024740 PMID 21300919 PARVUS TAIR locus:2016432 PMID 21300919 LGT9 TAIR locus:2032357 PMID 21300919 GATL10 TAIR locus:2095420 PMID 21300919 GATL2 TAIR locus:2101724 PMID 21300919 GATL6 TAIR locus:2132218 PMID 17397551 PgMYB2 NCBI_gi DQ399072.2 PO:0025469 cell differentiation stage of secondary xylem A secondary xylem development stage (PO:0025427) that occurs during the interval between the end of a cell division stage of secondary xylem (PO:0025463) and the death of the last living cell in the secondary xylem. PMID 17397551 PgMYB2 NCBI_gi DQ399072.2