Chromatin-mediated feed-forward regulation of YUCCA4 expression by AGAMOUS and CRABS CLAW directs gynoecium formation

Yamaguchi, Nobutoshi, Huang, Jiangbo, Tatsumi, Yoshitaka, Abe, Masato, Sugano, Shigeo S., Kojima, Mikiko, Takebayashi, Yumiko, Kiba, Takatoshi, Yokoyama, Ryusuke, Nishitani, Kazuhiko, Sakakibara, Hitoshi, Ito, Toshiro

doi:10.1038/s41467-018-07763-0

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.

Chromatin-mediated feed-forward regulation of YUCCA4 expression by AGAMOUS and CRABS CLAW directs gynoecium formation

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収録刊行物

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Chromatin-mediated feed-forward regulation of YUCCA4 expression by AGAMOUS and CRABS CLAW directs gynoecium formation

書誌事項

説明

収録刊行物

被引用文献 (16)*注記

参考文献 (74)*注記

関連プロジェクト

キーワード

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書き出し

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