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Exogenous application of the apocarotenoid retinaldehyde negatively regulates auxin-mediated root growth.
Xu, Kang; Zeng, Haoran; Lin, Feiyang; Yumoto, Emi; Asahina, Masashi; Hayashi, Ken-Ichiro; Fukaki, Hidehiro; Ito, Hisashi; Watahiki, Masaaki K.
Afiliación
  • Xu K; Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
  • Zeng H; Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
  • Lin F; Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
  • Yumoto E; Advanced Instrumental Analysis Center. Teikyo University, Utsunomiya, Japan.
  • Asahina M; Advanced Instrumental Analysis Center. Teikyo University, Utsunomiya, Japan.
  • Hayashi KI; Department of Biosciences, Teikyo University, Utsunomiya, Japan.
  • Fukaki H; Department of Bioscience, Okayama University of Science, Okayama, Japan.
  • Ito H; Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan.
  • Watahiki MK; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan.
Plant Physiol ; 2024 Aug 09.
Article en En | MEDLINE | ID: mdl-39117340
ABSTRACT
Root development is essential for plant survival. The lack of carotenoid biosynthesis in the phytoene desaturase 3 (pds3) mutant results in short primary roots (PR) and reduced lateral root (LR) formation. In this study, we showed that short-term inhibition of PDS by fluridone suppresses PR growth in WT, but to a lesser extent in auxin mutants of Arabidopsis (Arabidopsis thaliana). Such an inhibition of PDS activity increased endogenous indole-3-acetic acid (IAA) levels, promoted auxin signaling, and partially complemented the PR growth of an auxin deficient mutant, the YUCCA 3 5 7 8 9 quadruple mutant (yucQ). The exogenous application of retinaldehyde (retinal), an apocarotenoid derived from ß-carotene, complemented the fluridone-induced suppression of root growth, as well as the short roots of the pds3 mutant. Retinal also partially complemented the auxin-induced suppression of root growth. These results suggest that retinal may play a role in regulating root growth by modulating endogenous auxin levels.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plant Physiol Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plant Physiol Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos