Heggie, Laura and Jansen, Marcel A.K. and Burbridge, Emma and Kavanagh, Tony A. and Thorneley, Roger N.F. and Dix, Philip
(2005)
Transgenic tobacco (Nicotiana tabacum L. cv. Samsun-NN) plants
over-expressing a synthetic HRP-C gene are altered in growth,
development and susceptibility to abiotic stress.
Plant Physiology and Biochemistry, 43 (12).
pp. 1067-1073.
ISSN 0981-9428
Abstract
The physiological role of class III peroxidases (EC 1.11.1.7) in controlling plant growth and development has been investigated by overexpression
of both native and heterologous peroxidases. However, it has remained an enigma as to why the phenotypes of different peroxidase
over-expressing transgenics vary. In order to resolve the conflicting information about the consequences of peroxidase over-expression, we have
explored the role of the subcellular targeting of HRP-C in controlling stem growth, root development, axillary branching and abiotic stress
tolerance in tobacco (Nicotiana tabacum L.). Altering the sub-cellular targeting of vacuolar HRP-C, such that over-expressed peroxidase accumulates
in the cytoplasm and cell wall, induced phenotypic changes that are typically associated with altered auxin homeostasis, and overexpression
of cell wall located peroxidases. We conclude that sub-cellular targeting is a determinant of the phenotype of peroxidase over-expressing
plants.
| Item Type: |
Article
|
| Keywords: |
Peroxidase; Isozyme; Nicotiana tabacum; Lignin; Abiotic stress; Auxin; |
| Academic Unit: |
Faculty of Science and Engineering > Biology |
| Item ID: |
7385 |
| Identification Number: |
https://doi.org/10.1016/j.plaphy.2005.11.002 |
| Depositing User: |
Prof. Philip J. Dix
|
| Date Deposited: |
25 Aug 2016 15:49 |
| Journal or Publication Title: |
Plant Physiology and Biochemistry |
| Publisher: |
Elsevier |
| Refereed: |
Yes |
| Funders: |
European Commission, Enterprise Ireland (EI) |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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