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The importance of soil drying and re-wetting in crop phytohormonal and nutritional responses to deficit irrigation

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The importance of soil drying and re-wetting in crop phytohormonal and nutritional responses to deficit irrigation. / Dodd, Ian C.; Puertolas Simon, Jaime; Huber, Katrin; Gabriel Perez-Perez, Juan; Wright, Hannah R.; Blackwell, Martin S. A.

In: Journal of Experimental Botany, Vol. 66, No. 8, 04.2015, p. 2239-2252.

Research output: Contribution to journalLiterature review

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Dodd, Ian C. ; Puertolas Simon, Jaime ; Huber, Katrin ; Gabriel Perez-Perez, Juan ; Wright, Hannah R. ; Blackwell, Martin S. A. / The importance of soil drying and re-wetting in crop phytohormonal and nutritional responses to deficit irrigation. In: Journal of Experimental Botany. 2015 ; Vol. 66, No. 8. pp. 2239-2252.

Bibtex

@article{cabddb1469724882ba0d83495553d93f,
title = "The importance of soil drying and re-wetting in crop phytohormonal and nutritional responses to deficit irrigation",
abstract = "Soil drying and re-wetting (DRW) occurs at varying frequencies and intensities during crop production, and is deliberately used in water-saving irrigation techniques that aim to enhance crop water use efficiency. Soil drying not only limits root water uptake which can (but not always) perturb shoot water status, but also alters root synthesis of phytohormones and their transport to shoots to regulate leaf growth and gas exchange. Re-wetting the soil rapidly restores leaf water potential and leaf growth (minutes to hours), but gas exchange recovers more slowly (hours to days), probably mediated by sustained changes in root to shoot phytohormonal signalling. Partial rootzone drying (PRD) deliberately irrigates only part of the rootzone, while the remainder is allowed to dry. Alternating these wet and dry zones (thus re-wetting dry soil) substantially improves crop yields compared with maintaining fixed wet and dry zones or conventional deficit irrigation, and modifies phytohormonal (especially abscisic acid) signalling. Alternate wetting and drying (AWD) of rice can also improve yield compared with paddy culture, and is correlated with altered phytohormonal (including cytokinin) signalling. Both PRD and AWD can improve crop nutrition, and re-wetting dry soil provokes both physical and biological changes which affect soil nutrient availability. Whether this alters crop nutrient uptake depends on competition between plant and microbes for nutrients, with the rate of re-wetting determining microbial dynamics. Nevertheless, studies that examine the effects of soil DRW on both crop nutritional and phytohormonal responses are relatively rare; thus, determining the cause(s) of enhanced crop yields under AWD and PRD remains challenging.",
keywords = "ABA, alternate wetting and drying, partial rootzone drying, soil phosphorus dynamics, root-to-shoot signalling, xylem sap, WATER-USE EFFICIENCY, ROOT-ZONE IRRIGATION, INDUCED STOMATAL CLOSURE, XYLEM SAP ABA, ABSCISIC-ACID, PHOSPHORUS SOLUBILIZATION, MICROBIAL BIOMASS, HYDRAULIC CONDUCTIVITY, TRANSPIRATION STREAM, SHOOT COMMUNICATION",
author = "Dodd, {Ian C.} and {Puertolas Simon}, Jaime and Katrin Huber and {Gabriel Perez-Perez}, Juan and Wright, {Hannah R.} and Blackwell, {Martin S. A.}",
year = "2015",
month = apr
doi = "10.1093/jxb/eru532",
language = "English",
volume = "66",
pages = "2239--2252",
journal = "Journal of Experimental Botany",
issn = "0022-0957",
publisher = "OXFORD UNIV PRESS",
number = "8",

}

RIS

TY - JOUR

T1 - The importance of soil drying and re-wetting in crop phytohormonal and nutritional responses to deficit irrigation

AU - Dodd, Ian C.

AU - Puertolas Simon, Jaime

AU - Huber, Katrin

AU - Gabriel Perez-Perez, Juan

AU - Wright, Hannah R.

AU - Blackwell, Martin S. A.

PY - 2015/4

Y1 - 2015/4

N2 - Soil drying and re-wetting (DRW) occurs at varying frequencies and intensities during crop production, and is deliberately used in water-saving irrigation techniques that aim to enhance crop water use efficiency. Soil drying not only limits root water uptake which can (but not always) perturb shoot water status, but also alters root synthesis of phytohormones and their transport to shoots to regulate leaf growth and gas exchange. Re-wetting the soil rapidly restores leaf water potential and leaf growth (minutes to hours), but gas exchange recovers more slowly (hours to days), probably mediated by sustained changes in root to shoot phytohormonal signalling. Partial rootzone drying (PRD) deliberately irrigates only part of the rootzone, while the remainder is allowed to dry. Alternating these wet and dry zones (thus re-wetting dry soil) substantially improves crop yields compared with maintaining fixed wet and dry zones or conventional deficit irrigation, and modifies phytohormonal (especially abscisic acid) signalling. Alternate wetting and drying (AWD) of rice can also improve yield compared with paddy culture, and is correlated with altered phytohormonal (including cytokinin) signalling. Both PRD and AWD can improve crop nutrition, and re-wetting dry soil provokes both physical and biological changes which affect soil nutrient availability. Whether this alters crop nutrient uptake depends on competition between plant and microbes for nutrients, with the rate of re-wetting determining microbial dynamics. Nevertheless, studies that examine the effects of soil DRW on both crop nutritional and phytohormonal responses are relatively rare; thus, determining the cause(s) of enhanced crop yields under AWD and PRD remains challenging.

AB - Soil drying and re-wetting (DRW) occurs at varying frequencies and intensities during crop production, and is deliberately used in water-saving irrigation techniques that aim to enhance crop water use efficiency. Soil drying not only limits root water uptake which can (but not always) perturb shoot water status, but also alters root synthesis of phytohormones and their transport to shoots to regulate leaf growth and gas exchange. Re-wetting the soil rapidly restores leaf water potential and leaf growth (minutes to hours), but gas exchange recovers more slowly (hours to days), probably mediated by sustained changes in root to shoot phytohormonal signalling. Partial rootzone drying (PRD) deliberately irrigates only part of the rootzone, while the remainder is allowed to dry. Alternating these wet and dry zones (thus re-wetting dry soil) substantially improves crop yields compared with maintaining fixed wet and dry zones or conventional deficit irrigation, and modifies phytohormonal (especially abscisic acid) signalling. Alternate wetting and drying (AWD) of rice can also improve yield compared with paddy culture, and is correlated with altered phytohormonal (including cytokinin) signalling. Both PRD and AWD can improve crop nutrition, and re-wetting dry soil provokes both physical and biological changes which affect soil nutrient availability. Whether this alters crop nutrient uptake depends on competition between plant and microbes for nutrients, with the rate of re-wetting determining microbial dynamics. Nevertheless, studies that examine the effects of soil DRW on both crop nutritional and phytohormonal responses are relatively rare; thus, determining the cause(s) of enhanced crop yields under AWD and PRD remains challenging.

KW - ABA

KW - alternate wetting and drying

KW - partial rootzone drying

KW - soil phosphorus dynamics

KW - root-to-shoot signalling

KW - xylem sap

KW - WATER-USE EFFICIENCY

KW - ROOT-ZONE IRRIGATION

KW - INDUCED STOMATAL CLOSURE

KW - XYLEM SAP ABA

KW - ABSCISIC-ACID

KW - PHOSPHORUS SOLUBILIZATION

KW - MICROBIAL BIOMASS

KW - HYDRAULIC CONDUCTIVITY

KW - TRANSPIRATION STREAM

KW - SHOOT COMMUNICATION

U2 - 10.1093/jxb/eru532

DO - 10.1093/jxb/eru532

M3 - Literature review

VL - 66

SP - 2239

EP - 2252

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 8

ER -