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  4. Long-distance call from phosphate: Systemic regulation of phosphate starvation responses
 
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Long-distance call from phosphate: Systemic regulation of phosphate starvation responses

Journal
Journal of Experimental Botany
Journal Volume
65
Journal Issue
7
Pages
1817-1827
Date Issued
2014
Author(s)
WEI-YI LIN  
Huang, Teng-Kuei
Leong, Shang Jye
Chiou, Tzyy-Jen
DOI
10.1093/jxb/ert431
URI
http://www.scopus.com/inward/record.url?eid=2-s2.0-84898891587&partnerID=MN8TOARS
http://scholars.lib.ntu.edu.tw/handle/123456789/388123
Abstract
Phosphate (Pi) is an essential nutrient for plants but is normally fixed in soil, which limits plant growth and reproduction. In response to low availability of Pi,
Phosphate (Pi) is an essential nutrient for plants but is normally fixed in soil, which limits plant growth and reproduction. In response to low availability of Pi, shoots and roots react differently but cooperatively to improve Pi acquisition from the rhizosphere and adjust Pi distribution and metabolism within plants. Shoot and root responses are coordinated by the trafficking of various kinds of systemic signals through the vasculature. Mutual communication between different tissues is necessary to integrate the environmental stimuli with the internal cues at the whole-plant level. Different approaches have been used to monitor or manipulate components in the vascular stream to reveal several candidates of systemic signals from roots or shoots, including photosynthates, phytohormones, microRNAs, and Pi. In addition, the downstream signalling pathways mediated by these signals have been discovered. The crosstalk among different signalling pathways has been revealed, showing the complexity of the P i signalling network. In this review, we summarize the approaches used for studying systemic signalling and discuss recent progress and challenges in investigating the systemic signalling pathway that integrates Pi starvation responses to maintain Pi at physiological concentrations. Knowledge gained from this study may help improve the phosphorus use efficiency of crops. © 2013 The Author.
Subjects
MicroRNA; non-cell-autonomous; phosphate; phosphate starvation response; phosphate transporter; phosphorus; phytohormone; sugar; systemic signal;
MicroRNA; non-cell-autonomous; phosphate; phosphate starvation response; phosphate transporter; phosphorus; phytohormone; sugar; systemic signal; vascular tissue.
Other Subjects
microRNA; phosphate; phytohormone; vegetable protein
crop; genetics; metabolism; plant; plant physiology; plant root; signal transduction
Type
journal article

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