Project Molekulare Mechanismen von MYBs Transkriptionsfaktoren bei der Differenzierung von Korkgewebe

Basic data

Title:
Molekulare Mechanismen von MYBs Transkriptionsfaktoren bei der Differenzierung von Korkgewebe
Duration:
01/10/2020 to 30/09/2023
Abstract / short description:
Like our skin, the outermost tissues of the plant body, evolved to protect the plant against biotic and abiotic agents and to control loss of water and gas exchanges. The periderm is the outer tissue that covers and protects the vasculature during secondary growth. It originates from the cork cambium, which divides and produces inward the phelloderm and outward the cork. The barrier properties of the periderm are conferred by the cork, which accumulates high amount of suberin and lignin in the cell walls. Despite the economic and agronomical importance of the cork, few regulators of periderm formation and cork differentiation are known. Based on periderm/cork transcript-profiling of several species, we identified a set of closely related MYB transcription factors (TFs), which are conserved among species and specifically expressed in the periderm/cork. Our preliminary results, exploiting the Arabidopsis root, as a model, suggest a dual function in cork differentiation for these MYBs. On one hand, they promote suberin accumulation and on the other hand they repress cork cambium activity. Here, exploiting tools and resources in which TFs expression in the periderm can be induced in a precisely defined spatiotemporal context, we aim to further dissect their role during cork differentiation, to identify their targets and thus establish the first cork regulatory network. In addition, we will focus on their function during abiotic stresses, paving the way for breeding programs targeting root barriers.
Keywords:
Periderm
Cork
Secondary growth
MYBs
Arabidopsis
Root

Involved staff

Managers

Department of Biology
Faculty of Science

Local organizational units

Center for Plant Molecular Biology (ZMBP)
Department of Biology
Faculty of Science

Funders

Bonn, Nordrhein-Westfalen, Germany
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