Lateral root initiation requires the sequential induction of transcription factors LBD16 and PUCHI in Arabidopsis thaliana

Lateral root initiation requires the sequential induction of transcription factors LBD16 and PUCHI in Arabidopsis thaliana

© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 224(2019), 2 vom: 28. Okt., Seite 749-760
1. Verfasser: Goh, Tatsuaki (VerfasserIn)
Weitere Verfasser: Toyokura, Koichi, Yamaguchi, Nobutoshi, Okamoto, Yoshie, Uehara, Takeo, Kaneko, Shutaro, Takebayashi, Yumiko, Kasahara, Hiroyuki, Ikeyama, Yoshifumi, Okushima, Yoko, Nakajima, Keiji, Mimura, Tetsuro, Tasaka, Masao, Fukaki, Hidehiro
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis thaliana LBD16 PUCHI auxin lateral root Arabidopsis Proteins Indoleacetic Acids LBD16 protein, Arabidopsis mehr... Puchi protein, Arabidopsis Transcription Factors
Beschreibung
Zusammenfassung:© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.
Lateral root (LR) formation in Arabidopsis thaliana is initiated by asymmetric division of founder cells, followed by coordinated cell proliferation and differentiation for patterning new primordia. The sequential developmental processes of LR formation are triggered by a localized auxin response. LATERAL ORGAN BOUNDARIES-DOMAIN 16 (LBD16), an auxin-inducible transcription factor, is one of the key regulators linking auxin response in LR founder cells to LR initiation. We identified key genes for LR formation that are activated by LBD16 in an auxin-dependent manner. LBD16 targets identified include the transcription factor gene PUCHI, which is required for LR primordium patterning. We demonstrate that LBD16 activity is required for the auxin-inducible expression of PUCHI. We show that PUCHI expression is initiated after the first round of asymmetric cell division of LR founder cells and that premature induction of PUCHI during the preinitiation phase disrupts LR primordium formation. Our results indicate that LR initiation requires the sequential induction of transcription factors LBD16 and PUCHI
Beschreibung:Date Completed 11.05.2020
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.16065