Multiple Roles of Brassinosteroid Signaling in Vascular Development

Author:

Furuya Tomoyuki12ORCID,Ohashi-Ito Kyoko3ORCID,Kondo Yuki24ORCID

Affiliation:

1. College of Life Sciences, Ritsumeikan University , 1-1-1 Noji-higashi, Kusatsu, 525-8577 Japan

2. Department of Biological Sciences, Graduate School of Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, 560-0043 Japan

3. Department of Biological Sciences, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan

4. Department of Biology, Graduate School of Science, Kobe University , 1-1 Rokkodai, Kobe, 657-8501 Japan

Abstract

Abstract Brassinosteroids (BRs) are plant steroid hormones that control growth and stress responses. In the context of development, BRs play diverse roles in controlling cell differentiation and tissue patterning. The vascular system, which is essential for transporting water and nutrients throughout the plant body, initially establishes a tissue pattern during primary development and then dramatically increases the number of vascular cells during secondary development. This complex developmental process is properly regulated by a network consisting of various hormonal signaling pathways. Genetic studies have revealed that mutants that are defective in BR biosynthesis or the BR signaling cascade exhibit a multifaceted vascular development phenotype. Furthermore, BR crosstalk with other plant hormones, including peptide hormones, coordinately regulates vascular development. Recently, the involvement of BR in vascular development, especially in xylem differentiation, has also been suggested in plant species other than the model plant Arabidopsis thaliana. In this review, we briefly summarize the recent findings on the roles of BR in primary and secondary vascular development in Arabidopsis and other species.

Funder

Japan Society for the Promotion of Science

Fusion Oriented REsearch for disruptive Science and Technology

Publisher

Oxford University Press (OUP)

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