Chromatin-mediated feed-forward auxin biosynthesis in floral meristem determinacy

Nobutoshi Yamaguchi, Jiangbo Huang, Yoshitaka Tatsumi, Masato Abe, Shigeo S. Sugano, Mikiko Kojima, Yumiko Takebayashi, Takatoshi Kiba, Ryusuke Yokoyama, Kazuhiko Nishitani, Hitoshi Sakakibara and Toshiro Ito ()
Additional contact information
Nobutoshi Yamaguchi: Nara Institute of Science and Technology
Jiangbo Huang: National University of Singapore
Yoshitaka Tatsumi: Nara Institute of Science and Technology
Masato Abe: Nara Institute of Science and Technology
Shigeo S. Sugano: Japan Science and Technology Agency
Mikiko Kojima: RIKEN Center for Sustainable Resource Science
Yumiko Takebayashi: RIKEN Center for Sustainable Resource Science
Takatoshi Kiba: Nagoya University
Ryusuke Yokoyama: Tohoku University
Kazuhiko Nishitani: Tohoku University
Hitoshi Sakakibara: RIKEN Center for Sustainable Resource Science
Toshiro Ito: Nara Institute of Science and Technology

Nature Communications, 2018, vol. 9, issue 1, 1-15

Abstract: Abstract In flowering plants, the switch from floral stem cell maintenance to gynoecium (female structure) formation is a critical developmental transition for reproductive success. In Arabidopsis thaliana, AGAMOUS (AG) terminates floral stem cell activities to trigger this transition. Although CRABS CLAW (CRC) is a direct target of AG, previous research has not identified any common targets. Here, we identify an auxin synthesis gene, YUCCA4 (YUC4) as a common direct target. Ectopic YUC4 expression partially rescues the indeterminate phenotype and cell wall defects that are caused by the crc mutation. The feed-forward YUC4 activation by AG and CRC directs a precise change in chromatin state for the shift from floral stem cell maintenance to gynoecium formation. We also showed that two auxin-related direct CRC targets, YUC4 and TORNADO2, cooperatively contribute to the termination of floral stem cell maintenance. This finding provides new insight into the CRC-mediated auxin homeostasis regulation for proper gynoecium formation.

Date: 2018
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-018-07763-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07763-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-018-07763-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().