Involvement of TBL/DUF231 proteins into cell wall biology.

Plant Signaling & Behavior
Volker BischoffWolf-Rüdiger Scheible

Abstract

Through map-based cloning we determined TRICHOME BIREFRINGENCE (TBR) to belong to a plant-specific, yet anonymous gene family with 46 members in Arabidopsis thaliana. These genes all encode the domain of unknown function 231 (DUF231). TBR and its homolog TRICHOME BIREFRINGENCE-LIKE3 (TBL3) are transcriptionally coordinated with CELLULOSE SYNTHASE (CESA) genes, and loss of TBR or TBL3 results in decreased levels of crystalline secondary wall cellulose in trichomes and stems, respectively. Loss of TBR or TBL3 further results in increased pectin methylesterase (PME) activity and reduced pectin esterification in etiolated Arabidopsis hypocotyls. Together, the results suggest that DUF231 proteins might function in the maintenance of pectin- and probably homogalacturonan esterification, and that this is a requirement for normal secondary wall cellulose synthesis, at least in some tissues and organs. Here we expand the discussion about the role of TBL/DUF231 proteins in cell wall biology based on sequence and structure analyses. Our analysis revealed structural similarities of TBR with a rhamnogalacturonan acetylesterase (RGAE) of Aspergillus aculeatus and the protein LUSTRIN A-LIKE (Oryza sativa). The implications of these findings i...Continue Reading

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Citations

Jan 11, 2013·Molecular Plant-microbe Interactions : MPMI·Divya ChandranMary C Wildermuth
Mar 17, 2011·PloS One·Valérie LefebvreMylène Durand-Tardif
Apr 1, 2014·Plant & Cell Physiology·Ritesh MewalalAlexander A Myburg
Jun 27, 2013·Planta·Markus PaulyGuangyan Xiong
Jun 16, 2017·Annual Review of Phytopathology·Mary C WildermuthDivya Chandran
Sep 7, 2018·Frontiers in Plant Science·Markus Pauly, Vicente Ramírez
Oct 20, 2020·Current Genomics·Nur KaracaMuhammed Bahattin Tanyolac

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