Transcription switches for protoxylem and metaxylem vessel formation.

نویسندگان

  • Minoru Kubo
  • Makiko Udagawa
  • Nobuyuki Nishikubo
  • Gorou Horiguchi
  • Masatoshi Yamaguchi
  • Jun Ito
  • Tetsuro Mimura
  • Hiroo Fukuda
  • Taku Demura
چکیده

Land plants evolved xylem vessels to conduct water and nutrients, and to support the plant. Microarray analysis with a newly established Arabidopsis in vitro xylem vessel element formation system and promoter analysis revealed the possible involvement of some plant-specific NAC-domain transcription factors in xylem formation. VASCULAR-RELATED NAC-DOMAIN6 (VND6) and VND7 can induce transdifferentiation of various cells into metaxylem- and protoxylem-like vessel elements, respectively, in Arabidopsis and poplar. A dominant repression of VND6 and VND7 specifically inhibits metaxylem and protoxylem vessel formation in roots, respectively. These findings suggest that these genes are transcription switches for plant metaxylem and protoxylem vessel formation.

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عنوان ژورنال:
  • Genes & development

دوره 19 16  شماره 

صفحات  -

تاریخ انتشار 2005