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Liming can decrease legume crop yield and leaf gas exchange by enhancing root to shoot ABA signalling

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Liming can decrease legume crop yield and leaf gas exchange by enhancing root to shoot ABA signalling. / Rothwell, Shane A.; Elphinstone, E. David; Dodd, Ian C.

In: Journal of Experimental Botany, Vol. 66, No. 8, 04.2015, p. 2335-2345.

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Rothwell, Shane A. ; Elphinstone, E. David ; Dodd, Ian C. / Liming can decrease legume crop yield and leaf gas exchange by enhancing root to shoot ABA signalling. In: Journal of Experimental Botany. 2015 ; Vol. 66, No. 8. pp. 2335-2345.

Bibtex

@article{243d1115a23b42ff9790af7255334509,
title = "Liming can decrease legume crop yield and leaf gas exchange by enhancing root to shoot ABA signalling",
abstract = "To meet future requirements for food production, sustainable intensive agricultural systems need to optimize nutrient availability to maximize yield, traditionally achieved by maintaining soil pH within an optimal range (6-6.5) by applying lime (calcium carbonate). However, a field trial that applied recommended liming rates to a sandy loam soil (increasing soil pH from 5.5 to 6.2) decreased pod yield of field bean (Vicia faba L. cv. Fuego) by similar to 30%. Subsequent pot trials, with liming that raised soil pH to 6.3-6.7, reduced stomatal conductance (g(s)) by 63, 26, and 59% in V. faba, bean (Phaseolus vulgaris), and pea (Pisum sativum), respectively. Furthermore, liming reduced shoot dry biomass by 16-24% in these species. Ionomic analysis of root xylem sap and leaf tissue revealed a decrease in phosphorus concentration that was correlated with decreased g(s): both reductions were partially reversed by adding superphosphate fertilizer. Further analysis of pea suggests that leaf gas exchange was reduced by a systemic increase (roots, xylem sap, and leaves) in the phytohormone abscisic acid (ABA) in response to lime-induced suboptimal plant phosphorus concentrations. Supplying synthetic ABA via the transpiration stream to detached pea leaves, at the same xylem sap concentrations induced by liming, decreased transpiration. Furthermore, the g(s) of the ABA-deficient mutant pea wilty was unresponsive to liming, apparently confirming that ABA mediates some responses to low phosphorus availability caused by liming. This research provides a detailed mechanistic understanding of the physiological processes by which lime application can limit crop yields, and questions the suitability of current liming recommendations.",
keywords = "Abscisic acid, ionome, liming, phosphorus, stomatal conductance, wilty, DEFICIENT COTTON PLANTS, XYLEM SAP COMPOSITION, ABSCISIC-ACID, WATER-STRESS, DRYING SOIL, HYDRAULIC CONDUCTANCE, PHOSPHATE DEFICIENCY, MONOCLONAL-ANTIBODY, HELIANTHUS-ANNUUS, STOMATAL RESPONSE",
author = "Rothwell, {Shane A.} and Elphinstone, {E. David} and Dodd, {Ian C.}",
year = "2015",
month = apr,
doi = "10.1093/jxb/erv042",
language = "English",
volume = "66",
pages = "2335--2345",
journal = "Journal of Experimental Botany",
issn = "0022-0957",
publisher = "OXFORD UNIV PRESS",
number = "8",

}

RIS

TY - JOUR

T1 - Liming can decrease legume crop yield and leaf gas exchange by enhancing root to shoot ABA signalling

AU - Rothwell, Shane A.

AU - Elphinstone, E. David

AU - Dodd, Ian C.

PY - 2015/4

Y1 - 2015/4

N2 - To meet future requirements for food production, sustainable intensive agricultural systems need to optimize nutrient availability to maximize yield, traditionally achieved by maintaining soil pH within an optimal range (6-6.5) by applying lime (calcium carbonate). However, a field trial that applied recommended liming rates to a sandy loam soil (increasing soil pH from 5.5 to 6.2) decreased pod yield of field bean (Vicia faba L. cv. Fuego) by similar to 30%. Subsequent pot trials, with liming that raised soil pH to 6.3-6.7, reduced stomatal conductance (g(s)) by 63, 26, and 59% in V. faba, bean (Phaseolus vulgaris), and pea (Pisum sativum), respectively. Furthermore, liming reduced shoot dry biomass by 16-24% in these species. Ionomic analysis of root xylem sap and leaf tissue revealed a decrease in phosphorus concentration that was correlated with decreased g(s): both reductions were partially reversed by adding superphosphate fertilizer. Further analysis of pea suggests that leaf gas exchange was reduced by a systemic increase (roots, xylem sap, and leaves) in the phytohormone abscisic acid (ABA) in response to lime-induced suboptimal plant phosphorus concentrations. Supplying synthetic ABA via the transpiration stream to detached pea leaves, at the same xylem sap concentrations induced by liming, decreased transpiration. Furthermore, the g(s) of the ABA-deficient mutant pea wilty was unresponsive to liming, apparently confirming that ABA mediates some responses to low phosphorus availability caused by liming. This research provides a detailed mechanistic understanding of the physiological processes by which lime application can limit crop yields, and questions the suitability of current liming recommendations.

AB - To meet future requirements for food production, sustainable intensive agricultural systems need to optimize nutrient availability to maximize yield, traditionally achieved by maintaining soil pH within an optimal range (6-6.5) by applying lime (calcium carbonate). However, a field trial that applied recommended liming rates to a sandy loam soil (increasing soil pH from 5.5 to 6.2) decreased pod yield of field bean (Vicia faba L. cv. Fuego) by similar to 30%. Subsequent pot trials, with liming that raised soil pH to 6.3-6.7, reduced stomatal conductance (g(s)) by 63, 26, and 59% in V. faba, bean (Phaseolus vulgaris), and pea (Pisum sativum), respectively. Furthermore, liming reduced shoot dry biomass by 16-24% in these species. Ionomic analysis of root xylem sap and leaf tissue revealed a decrease in phosphorus concentration that was correlated with decreased g(s): both reductions were partially reversed by adding superphosphate fertilizer. Further analysis of pea suggests that leaf gas exchange was reduced by a systemic increase (roots, xylem sap, and leaves) in the phytohormone abscisic acid (ABA) in response to lime-induced suboptimal plant phosphorus concentrations. Supplying synthetic ABA via the transpiration stream to detached pea leaves, at the same xylem sap concentrations induced by liming, decreased transpiration. Furthermore, the g(s) of the ABA-deficient mutant pea wilty was unresponsive to liming, apparently confirming that ABA mediates some responses to low phosphorus availability caused by liming. This research provides a detailed mechanistic understanding of the physiological processes by which lime application can limit crop yields, and questions the suitability of current liming recommendations.

KW - Abscisic acid

KW - ionome

KW - liming

KW - phosphorus

KW - stomatal conductance

KW - wilty

KW - DEFICIENT COTTON PLANTS

KW - XYLEM SAP COMPOSITION

KW - ABSCISIC-ACID

KW - WATER-STRESS

KW - DRYING SOIL

KW - HYDRAULIC CONDUCTANCE

KW - PHOSPHATE DEFICIENCY

KW - MONOCLONAL-ANTIBODY

KW - HELIANTHUS-ANNUUS

KW - STOMATAL RESPONSE

U2 - 10.1093/jxb/erv042

DO - 10.1093/jxb/erv042

M3 - Journal article

VL - 66

SP - 2335

EP - 2345

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 8

ER -