Transcription factors PRE3 and WOX11 are involved in the formation of new lateral roots from secondary growth taproot in A.thaliana

B. Baesso, D. Chiatante, M. Terzaghi, D. Zenga, Kaisa Nieminen, Ari Pekka Mähönen, Riccardo Siligato, Yrjö Eero Helariutta, G.S. Scippa, A. Montagnoli

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Sammanfattning

The spatial deployment of lateral roots determines the ability of a plant to interact with the surrounding environment for nutrition and anchorage. This paper shows that besides the pericycle, the vascular cambium, becoming active in Arabidopsis thaliana taproot at a later stage of development, is also able to form new lateral roots.

Demonstration of this event required the implementation of a two‐step approach in which the first leads to development of a secondary structure in A. thaliana taproot, and the second applies a mechanical stress on the vascular cambium to initiate the formation of a new lateral root primordium.

GUS staining shows PRE3, DR5 and WOX11 signals in the cambial zone of the root during new lateral root formation.

Preliminary investigations suggest the involvement of auxin and two transcription factors (PRE3/ATBS1/bHLH135/TMO7 and WOX11) in the transition of some vascular cambium initials from a role as producers of xylem/phloem mother cells to founder cells of a new lateral root primordium.
Originalspråkengelska
TidskriftPlant Biology
Volym20
Utgåva3
Sidor (från-till)426-432
Antal sidor7
ISSN1435-8603
DOI
StatusPublicerad - maj 2018
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 1183 Växtbiologi, mikrobiologi, virologi

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