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Local and long-range signalling pathways regulating plant responses to nitrate.

Forde, Brian G. (2002) Local and long-range signalling pathways regulating plant responses to nitrate. Annual review of Plant Biology, 53. pp. 203-224. ISSN 1543-5008

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Abstract

Nitrate is the major source of nitrogen (N) for plants growing in aerobic soils. However, the NO3 ion is also used by plants as a signal to reprogram plant metabolism and to trigger changes in plant architecture. A striking example is the way that a root system can react to a localized source of NO3 by activating the NO3 uptake system and proliferating lateral roots preferentially within the NO3-rich zone. That roots are able to respond autonomously in this fashion implies the existence of local signaling pathways that are sensitive to local changes in the external NO3 concentration. On the other hand, long-range signaling pathways are also needed to modulate these responses according to the plant's N status and to coordinate the allocation of resources between the root and the shoot. This review examines these signaling mechanisms and their interactions with sugar-sensing and hormonal response pathways.

Item Type: Article
Journal or Publication Title: Annual review of Plant Biology
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 8929
Deposited By: Prof Brian G Forde
Deposited On: 19 May 2008 11:58
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:28
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/8929

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