UNSPECIFIED (2006) Nutrient sensing and signalling in plants: Potassium and phosphorus. [Journal Item]

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Abstract

Potassium and phosphorus are important macronutrients for crops but are often deficient in the field. Very little is known about how plants sense fluctuations in K and P and how information about K and P availability is integrated at the whole plant level into physiological and metabolic adaptations. This chapter reviews recent advances in discovering molecular responses of plants to K and P deficiency by microarray experiments. These studies provide us not only with a comprehensive picture of adaptive mechanisms, but also with a large number of transcriptional markers that can be used to identify upstream components of K and P signalling pathways. On the basis of the available information we discuss putative receptors and signals involved in the sensing and integration of K and P status both at the cellular and at the whole plant level. These involve membrane potential, voltage-dependent ion channels, intracellular Ca and pH, and transcription factors, as well as hormones and metabolites for systemic signalling. Genetic screens of reporter lines for transcriptional markers and metabolome analysis of K- and P-deficient plants are likely to further advance our knowledge in this area in the near future.

Item Type:	Journal Item
Subjects:	S Agriculture > SB Plant culture
Series Name:	ADVANCES IN BOTANICAL RESEARCH INCORPORATING ADVANCES IN PLANT PATHOLOGY
Journal or Publication Title:	ADVANCES IN BOTANICAL RESEARCH, VOL 43
Publisher:	ACADEMIC PRESS LTD
ISSN:	0065-2296
Date:	2006
Volume:	43
Number of Pages:	49
Page Range:	pp. 209-257
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/33808

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