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Molecular features of secondary vascular tissue regeneration after bark girdling in Populus

Molecular features of secondary vascular tissue regeneration after bark girdling in Populus
Molecular features of secondary vascular tissue regeneration after bark girdling in Populus
• Regeneration is a common strategy for plants to repair damage to their tissue after attacks from other organisms or physical assaults. However, how differentiating cells acquire regenerative competence and rebuild the pattern of new tissues remains largely unknown. • Using anatomical observation and microarray analysis, we investigated the morphological process and molecular features of secondary vascular tissue regeneration after bark girdling in trees. • After bark girdling, new phloem and cambium regenerate from differentiating xylem cells and rebuild secondary vascular tissue pattern within 1 month. Differentiating xylem cells acquire regenerative competence through epigenetic regulation and cell cycle re-entry. The xylem developmental program was blocked, whereas the phloem or cambium program was activated, resulting in the secondary vascular tissue pattern re-establishment. Phytohormones play important roles in vascular tissue regeneration. • We propose a model describing the molecular features of secondary vascular tissue regeneration after bark girdling in trees. It provides information for understanding mechanisms of tissue regeneration and pattern formation of the secondary vascular tissues in plants.
bark girdling, populus tomentosa, regeneration, secondary vascular tissue, transcriptome profiling
0028-646X
869-884
Zhang, Jing
d6afba24-5cbe-4ff1-967f-486e75419b99
Gao, Ge
34699ea9-527a-4ee2-aee8-638f390e592c
Taylor, Gail
f3851db9-d37c-4c36-8663-e5c2cb03e171
Cui, Ke-Ming
c3814bfa-518c-4706-87ad-54e9eba185f5
He, Xin-Qiang
37b9547d-f6a4-459f-b8ff-e01802e90c50
Zhang, Jing
d6afba24-5cbe-4ff1-967f-486e75419b99
Gao, Ge
34699ea9-527a-4ee2-aee8-638f390e592c
Taylor, Gail
f3851db9-d37c-4c36-8663-e5c2cb03e171
Cui, Ke-Ming
c3814bfa-518c-4706-87ad-54e9eba185f5
He, Xin-Qiang
37b9547d-f6a4-459f-b8ff-e01802e90c50

Zhang, Jing, Gao, Ge, Taylor, Gail, Cui, Ke-Ming and He, Xin-Qiang (2011) Molecular features of secondary vascular tissue regeneration after bark girdling in Populus. New Phytologist, 192 (4), 869-884. (doi:10.1111/j.1469-8137.2011.03855.x). (PMID:21883236)

Record type: Article

Abstract

• Regeneration is a common strategy for plants to repair damage to their tissue after attacks from other organisms or physical assaults. However, how differentiating cells acquire regenerative competence and rebuild the pattern of new tissues remains largely unknown. • Using anatomical observation and microarray analysis, we investigated the morphological process and molecular features of secondary vascular tissue regeneration after bark girdling in trees. • After bark girdling, new phloem and cambium regenerate from differentiating xylem cells and rebuild secondary vascular tissue pattern within 1 month. Differentiating xylem cells acquire regenerative competence through epigenetic regulation and cell cycle re-entry. The xylem developmental program was blocked, whereas the phloem or cambium program was activated, resulting in the secondary vascular tissue pattern re-establishment. Phytohormones play important roles in vascular tissue regeneration. • We propose a model describing the molecular features of secondary vascular tissue regeneration after bark girdling in trees. It provides information for understanding mechanisms of tissue regeneration and pattern formation of the secondary vascular tissues in plants.

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More information

e-pub ahead of print date: 25 August 2011
Published date: December 2011
Keywords: bark girdling, populus tomentosa, regeneration, secondary vascular tissue, transcriptome profiling
Organisations: Centre for Biological Sciences

Identifiers

Local EPrints ID: 206265
URI: http://eprints.soton.ac.uk/id/eprint/206265
ISSN: 0028-646X
PURE UUID: bcc1e74a-8bda-4d87-ba84-47a1b17db248
ORCID for Gail Taylor: ORCID iD orcid.org/0000-0001-8470-6390

Catalogue record

Date deposited: 19 Dec 2011 12:04
Last modified: 18 Feb 2021 16:52

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