Secondary cell wall patterning during xylem differentiation

• Published in: Current opinion in plant biology 2012-02, Vol.15 (1), p.38-44
• Main Authors: Oda, Yoshihisa, Fukuda, Hiroo
• Format: Article
• Language: English
• Subjects: Biological and medical sciences; Body Patterning; cell differentiation; Cell Wall - metabolism; Cell Wall - ultrastructure; cell walls; cellulose; Cellulose - metabolism; Fundamental and applied biological sciences. Psychology; in vitro culture; Microtubule-Associated Proteins - metabolism; microtubules; Microtubules - metabolism; proteins; Xylem - cytology; Xylem - embryology; Xylem - ultrastructure; xylem vessels
• ISSN: 1369-5266; 1879-0356
• DOI: 10.1016/j.pbi.2011.10.005

► Various MAPs regulate the secondary wall patterns in xylem cells. ► MAP70 proteins affect the boundary of secondary wall deposition. ► MIDD1 regulates depolymerization of MTs beneath specific membrane domains. ► Specification of plasma membrane domains may participate in secondary wall patterning. Xylem cell differentiation involves temporal and spatial regulation of secondary cell wall deposition. The cortical microtubules are known to regulate the spatial pattern of the secondary cell wall by orientating cellulose deposition. However, it is largely unknown how the microtubule arrangement is regulated during secondary wall formation. Recent findings of novel plant microtubule-associated proteins in developing xylem vessels shed new light on the regulation mechanism of the microtubule arrangement leading to secondary wall patterning. In addition, in vitro culture systems allow the dynamics of microtubules and microtubule-associated proteins during secondary cell wall formation to be followed. Therefore, this review focuses on novel aspects of microtubule dynamics leading to secondary cell wall patterning with a focus on microtubule-associated proteins.