NAC transcription factor: Difference between revisions
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== The secondary cell wall biosynthesis switches == | == The secondary cell wall biosynthesis switches == | ||
In vascular vessel, VND6 and VND7 control both secondary cell development and programmed cell death of vessels in both root and shoot tissues (1,33). The over-expression of VND6 and VND7 can induce ectopic differentiation of two different types of vessel elements: proto-xylem, and meta-xylem vessels. Reversely, the functional repression of VND6 and VND7 can inhibit vessel element formation. Additionally, the | In vascular vessel, VND6 and VND7 control both secondary cell development and programmed cell death of vessels in both root and shoot tissues (1,33). The over-expression of VND6 and VND7 can induce ectopic differentiation of two different types of vessel elements: proto-xylem, and meta-xylem vessels. Reversely, the functional repression of VND6 and VND7 can inhibit vessel element formation. Additionally, the excellent works finished by Ye lab showed that the Arabidopsis VND6 and VND7 can complement the NST1NST3 double mutant phenotype, indicating that VNDs share the conserved functions with other secondary cell wall regulators [34]. Then they found that the poplar VNDs can complement the Arabidopsis cell wall development defective mutant NST1NST3, suggesting that the conserved function of VNDs among different species [35]. Recently, the downstream genes of VND6 and VND7 were identified by the excellent works done by Demura lab, Ye lab, and Fukuda lab [14,36,37] | ||
[[Image:1123.png|thumb|frame|The figure and figure legend obtained from [34].Restoration of lignified secondary walls in the interfascicular fibers of stems of the snd1 nst1 double mutant by expression of PtrWNDs. The bottom parts of 8-week-old stems were sectioned and stained for lignin with phloroglucinol-HCl. if, Interfascicular fiber; xy, xylem. Bar in C = 82 mm for C to J.. Of these WNDs, PtrWNB3-6 are included in the group of VNDs]] | [[Image:1123.png|thumb|frame|The figure and figure legend obtained from [34].Restoration of lignified secondary walls in the interfascicular fibers of stems of the snd1 nst1 double mutant by expression of PtrWNDs. The bottom parts of 8-week-old stems were sectioned and stained for lignin with phloroglucinol-HCl. if, Interfascicular fiber; xy, xylem. Bar in C = 82 mm for C to J.. Of these WNDs, PtrWNB3-6 are included in the group of VNDs]] | ||
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33. Yamaguchi, M. et al. (2008) Vascular -related NAC-domain 7 is involved in the differentiation of all types of xylem vessels in Arabidopsis roots and shoots. Plant J. 55,652-664 | 33. Yamaguchi, M. et al. (2008) Vascular -related NAC-domain 7 is involved in the differentiation of all types of xylem vessels in Arabidopsis roots and shoots. Plant J. 55,652-664 | ||
34. Zhong | 34. Zhong, R. et al. (2010). Global analysis of direct targets of secondary wall NAC master switches in Arabidopsis. Molecular Plant 3, 1087-1103. | ||
35. Zhong, R. et al . (2010) Functional Characterization of Poplar Wood-Associated NAC Domain Transcription Factors. Plant Physiol. 152, 1044-1055 | |||
36. Zhong, R.et al. (2010). Global analysis of direct targets of secondary wall NAC master switches in Arabidopsis. Molecular Plant 3, 1087-1103 | |||
37. | |||
