このエントリーをはてなブックマークに追加
ID 53600
フルテキストURL
著者
Takatani, Shogo Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University
Hirayama, Takashi Institute of Plant Science and Resources, Okayama University ORCID 科研費研究者番号 publons
Hashimoto, Takashi Graduate School of Biological Science, Nara Institute of Science and Technology
Takahashi, Taku Department of Biological Science, Graduate School of Natural Science and Technology, Okayama University
Motose, Hiroyasu 自然科学研究科
抄録
Abscisic acid (ABA) regulates seed maturation, germination and various stress responses in plants. The roles of ABA in cellular growth and morphogenesis, however, remain to be explored. Here, we report that ABA induces the ectopic outgrowth of epidermal cells in Arabidopsis thaliana. Seedlings of A. thaliana germinated and grown in the presence of ABA developed ectopic protrusions in the epidermal cells of hypocotyls, petioles and cotyledons. One protrusion was formed in the middle of each epidermal cell. In the hypocotyl epidermis, two types of cell files are arranged alternately into non-stoma cell files and stoma cell files, ectopic protrusions being restricted to the non-stoma cell files. This suggests the presence of a difference in the degree of sensitivity to ABA or in the capacity of cells to form protrusions between the two cell files. The ectopic outgrowth was suppressed in ABA insensitive mutants, whereas it was enhanced in ABA hypersensitive mutants. Interestingly, ABA-induced ectopic outgrowth was also suppressed in mutants in which microtubule organization was compromised. Furthermore, cortical microtubules were disorganized and depolymerized by the ABA treatment. These results suggest that ABA signaling induces ectopic outgrowth in epidermal cells through microtubule reorganization.
キーワード
Cell growth
Plant cytoskeleton
備考
Scientific Reports 5, Article number: 11364 (2015), © 2015 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. This work is licensed under a Creative Commons Attribution 4.0 International License.
発行日
2015-06-12
出版物タイトル
Scientific Reports
5巻
出版者
Nature Publishing Group
開始ページ
11364
ISSN
2045-2322
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2015 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.
論文のバージョン
publisher
PubMed ID
DOI
Web of Sience KeyUT