Suberization - the second life of an endodermal cell

Current Opinion in Plant Biology
Tonni Grube AndersenNiko Geldner

Abstract

The endodermis is the innermost cortical cell layer that surrounds the central vasculature and deposits an apoplastic diffusion barrier known as the Casparian strip. Although discovered 150 years ago, the underlying mechanisms responsible for formation of the Casparian strips have only recently been investigated. However, the fate of the endodermal cell goes further than formation of Casparian strips as they undergo a second level of differentiation, defined by deposition of suberin as a secondary cell wall. The presence and function of endodermal suberin in root barriers has remained enigmatic, as its role in barrier formation is not clear, especially in respect to the already existing Casparian strips. In this review, we present recent advances in the understanding of suberin synthesis, transport to the secondary cell wall, developmental features and functions. We focus on some of the major unknown questions revolving the function of endodermal suberin, which we now have the means to investigate. We further provide thoughts on how this knowledge might expand our current models on the developmental and physiological adaptation of root in response to the environment.

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Citations

Jul 26, 2016·Frontiers in Plant Science·Kylie J Foster, Stanley J Miklavcic
Sep 2, 2016·Frontiers in Plant Science·Marc SomssichStaffan Persson
Apr 10, 2017·Current Opinion in Genetics & Development·Krisztina Ötvös, Eva Benková
Feb 7, 2020·The Plant Journal : for Cell and Molecular Biology·Hagai CohenAsaph Aharoni
Sep 8, 2017·BMC Genomics·Aladje BaldéAlfredo Cravador
May 2, 2018·Proceedings of the National Academy of Sciences of the United States of America·Kaho MabuchiHironaka Tsukagoshi
Jun 25, 2019·Frontiers in Plant Science·Zhulatai BaoChunmei Gong
Aug 24, 2016·The New Phytologist·Marie Barberon
Feb 3, 2021·Current Biology : CB·Tonni Grube AndersenNiko Geldner
May 16, 2019·Cell Reports·Christine N ShulseDiane E Dickel
Apr 17, 2021·The Plant Journal : for Cell and Molecular Biology·Zachary WahrenburgDylan K Kosma
May 22, 2021·Journal of Experimental Botany·Rachel ShahanPhilip N Benfey
Jul 29, 2021·Plant Science : an International Journal of Experimental Plant Biology·Artur PinskiElisabeth Jamet
Oct 31, 2021·Plant, Cell & Environment·Yutao ZouChrista Testerink

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