| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2019-12-16 |
| タイトル |
|
|
タイトル |
Root cap-dependent gravitropic U-turn of maize root requires light-induced auxin biosynthesis via the YUC pathway in the root apex |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Indole-3-acetic acid (IAA) biosynthesis |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
light dependent |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
maize |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
root cap |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
root gravitropism |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
yucasin |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Zmvt2 |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Zmyuc |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Suzuki, Hiromi
Yokawa, Ken
Nakano, Sayuri
Yoshida, Yuriko
Fabrissin, Isabelle
Okamoto, Takashi
Baluška, František
Koshiba, Tomokazu
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Gravitropism refers to the growth or movement of plants that is influenced by gravity. Roots exhibit positive gravitropism, and the root cap is thought to be the gravity-sensing site. In some plants, the root cap requires light irradiation for positive gravitropic responses. However, the mechanisms regulating this phenomenon are unknown. We herein report that maize roots exposed to white light continuously for ≥1–2h show increased indole-3-acetic acid (IAA) levels in the root tips, especially in the transition zone (1–3mm from the tip). Treatment with IAA biosynthesis inhibitors yucasin and l-kynurenine prevented any increases in IAA content and root curvature under light conditions. Analyses of the incorporation of a stable isotope label from tryptophan into IAA revealed that some of the IAA in roots was synthesized in the root apex. Furthermore, Zmvt2 and Zmyuc gene transcripts were detected in the root apex. One of the Zmyuc genes (ZM2G141383) was up-regulated by light irradiation in the 0–1mm tip region. Our findings suggest that IAA accumulation in the transition zone is due to light-induced activation of Zmyuc gene expression in the 0–1mm root apex region. Light-induced changes in IAA levels and distributions mediate the maize root gravitropic U-turn. |
| 書誌情報 |
Journal of Experimental Botany
en : Journal of Experimental Botany
巻 67,
号 15,
p. 4581-4591,
発行日 2016
|
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
0022-0957 |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1093/jxb/erw232 |
| 権利 |
|
|
権利情報 |
c The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. |
| 出版者 |
|
|
出版者 |
2019 Oxford University Press |
| 著者版フラグ |
|
|
言語 |
en |
|
値 |
publisher |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
Journal of Experimental Botany,67(15) pp. 4581-4591.pdf (2.9 MB)
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