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eXtra Botany |
Food production: reducing water consumption by manipulating long-distance chemical signalling in plants
1Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4YQ, UK
2Lehrstuhl Botanik I der Universität Würzburg, Julius von Sachs Platz 2, D-97082 Würzburg, Germany
* To whom correspondence should be addressed: E-mail: sally.wilkinson@lancaster.ac.uk
| The first 150 words of the full text of this article appear below. |
| Introduction |
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One of the great challenges for the future is the production of sufficient food for a dramatically growing population during a period of climate change where water supplies are dwindling, and phytotoxic air pollutants such as ozone are increasing. By 2050 global grain demand is expected to double (Postel, 1998; Tilman et al., 2002; Schiermeier, 2008). Greater food production, however, will require larger areas of irrigated land unless the water use efficiency (WUE) of crop plants can be increased. To increase and sustain food production the following ecophysiological, genetic, and agronomic actions have been suggested (Postel, 1998; Tilman et al., 2002; Schiermeier, 2008).
- (i) Improving irrigation practices and equipment (sprinkler, drip irrigation).
- (ii) Implementation of small-scale water-harvesting, terracing, improved rainwater storage, and increased soil moisture retention by improving soil structure (for example by adding manure, mulching).
- (iii) Improving crop water
. . . [Full Text of this Article] - (ii) Implementation of small-scale water-harvesting, terracing, improved rainwater storage, and increased soil moisture retention by improving soil structure (for example by adding manure, mulching).
| The ABA signalling pathway |
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| Manipulating the ABA signalling pathway using deficit irrigation |
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| How else can we manipulate ABA concentration? Some open questions |
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Soil micro-organisms
Apoplastic barriers
ABA-glucose ester (ABA-GE)
ABA-metabolism
ABA biosynthesis
| How can we increase stomatal sensitivity to ABA? |
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Manipulating xylem/apoplastic pH
Soil fertilization
Manipulating ethylene production/perception
| Conclusions and future research |
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