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

被引：35

作者：

Baesso, B. ^{[1
]}

Chiatante, D. ^{[1
]}

Terzaghi, M. ^{[1
]}

Zenga, D. ^{[1
]}

Nieminen, K. ^{[2
]}

Mahonen, A. P. ^{[2
]}

Siligato, R. ^{[2
]}

Helariutta, Y. ^{[2
,3
]}

Scippa, G. S. ^{[4
]}

Montagnoli, A. ^{[1
]}

机构：

[1] Univ Insubria, Dept Biotechnol & Life Sci, I-21100 Varese, Italy

[2] Univ Helsinki, Dept Biosci, Inst Biotechnol, Helsinki, Finland

[3] Univ Cambridge, Sainsbury Lab, Cambridge, England

[4] Univ Molise, Dept Biosci & Terr, Pesche, Italy

来源：

PLANT BIOLOGY | 2018年 / 20卷 / 03期

基金：

英国生物技术与生命科学研究理事会; 欧洲研究理事会; 芬兰科学院; 美国国家科学基金会;

关键词：

Auxin; bending; lateral root; PRE3; secondary structure; WOX11; CELL FATE TRANSITION; ARABIDOPSIS-THALIANA; EUROPEAN BEECH; BRANCH ROOTS; WOODY ROOT; INITIATION; AUXIN; ORGANOGENESIS; PERICYCLE; SYSTEM;

D O I：

10.1111/plb.12711

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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 becomes active in Arabidopsis thaliana taproot at a later stage of development and is also able to form new lateral roots. To demonstrate the above, we implemented a two-step approach in which the first step leads to development of a secondary structure in A.thaliana taproot, and the second applies a mechanical stress on the vascular cambium to initiate formation of a new lateral root primordium. GUS staining showed PRE3, DR5 and WOX11 signals in the cambial zone of the root during new lateral root formation. An advanced level of wood formation, characterized by the presence of medullar rays, was achieved. 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.

引用

页码：426 / 432

页数：7