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Mathias Neumann Andersen

A quantitative approach to developing more mechanistic gas exchange models for field grown potato: A new insight into chemical and hydraulic signalling

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A quantitative approach to developing more mechanistic gas exchange models for field grown potato : A new insight into chemical and hydraulic signalling. / Ahmadi, Seyed Hamid; Andersen, Mathias N; Poulsen, Rolf T; Plauborg, Finn; Hansen, Søren.

In: Agricultural and Forest Meteorology, Vol. 149, No. 9, 2009, p. 1541-1551.

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Ahmadi, Seyed Hamid ; Andersen, Mathias N ; Poulsen, Rolf T ; Plauborg, Finn ; Hansen, Søren. / A quantitative approach to developing more mechanistic gas exchange models for field grown potato : A new insight into chemical and hydraulic signalling. In: Agricultural and Forest Meteorology. 2009 ; Vol. 149, No. 9. pp. 1541-1551.

Bibtex

@article{4e1946e09ea711debac6000ea68e967b,
title = "A quantitative approach to developing more mechanistic gas exchange models for field grown potato: A new insight into chemical and hydraulic signalling",
abstract = "In this study we introduce new gas exchange models that are developed under natural conditions of field grown potato. The new models could explain about 85{\%} of the stomatal conductance variations, which was much higher than the well-known gas exchange models such as the Ball-Berry model [Ball, Woodrow, Berry, 1987. In: Nijhoff, M. (Eds.), Progress in Photosynthesis Research, vol. 4. Dordrecht, The Netherlands, pp. 5.221-5.224]. To overcome the limitations of previous models in simulating stomatal conductance when plants are exposed to drought stress, we proposed a down-regulating factor of chemical and hydraulic signalling on stomatal conductance as exp(-β[ABA])exp(-δ|ψ|) in which [ABA] and |ψ| are xylem ABA concentration and absolute value of leaf or stem water potential. In this study we found that stem water potential could be a very reliable indicator of how plant water status affects the stomatal conductance regulation. While previous models considered the same weighting for relative humidity and photosynthesis rate, we found that relative humidity has a more pronounced regulating effect on stomatal conductance than photosynthesis rate and the weightings for relative humidity and photosynthesis rate, respectively, were significantly higher and lower than unity.",
author = "Ahmadi, {Seyed Hamid} and Andersen, {Mathias N} and Poulsen, {Rolf T} and Finn Plauborg and S{\o}ren Hansen",
year = "2009",
doi = "10.1016/j.agrformet.2009.04.009",
language = "English",
volume = "149",
pages = "1541--1551",
journal = "Agricultural and Forest Meteorology",
issn = "0168-1923",
publisher = "Elsevier BV",
number = "9",

}

RIS

TY - JOUR

T1 - A quantitative approach to developing more mechanistic gas exchange models for field grown potato

T2 - A new insight into chemical and hydraulic signalling

AU - Ahmadi, Seyed Hamid

AU - Andersen, Mathias N

AU - Poulsen, Rolf T

AU - Plauborg, Finn

AU - Hansen, Søren

PY - 2009

Y1 - 2009

N2 - In this study we introduce new gas exchange models that are developed under natural conditions of field grown potato. The new models could explain about 85% of the stomatal conductance variations, which was much higher than the well-known gas exchange models such as the Ball-Berry model [Ball, Woodrow, Berry, 1987. In: Nijhoff, M. (Eds.), Progress in Photosynthesis Research, vol. 4. Dordrecht, The Netherlands, pp. 5.221-5.224]. To overcome the limitations of previous models in simulating stomatal conductance when plants are exposed to drought stress, we proposed a down-regulating factor of chemical and hydraulic signalling on stomatal conductance as exp(-β[ABA])exp(-δ|ψ|) in which [ABA] and |ψ| are xylem ABA concentration and absolute value of leaf or stem water potential. In this study we found that stem water potential could be a very reliable indicator of how plant water status affects the stomatal conductance regulation. While previous models considered the same weighting for relative humidity and photosynthesis rate, we found that relative humidity has a more pronounced regulating effect on stomatal conductance than photosynthesis rate and the weightings for relative humidity and photosynthesis rate, respectively, were significantly higher and lower than unity.

AB - In this study we introduce new gas exchange models that are developed under natural conditions of field grown potato. The new models could explain about 85% of the stomatal conductance variations, which was much higher than the well-known gas exchange models such as the Ball-Berry model [Ball, Woodrow, Berry, 1987. In: Nijhoff, M. (Eds.), Progress in Photosynthesis Research, vol. 4. Dordrecht, The Netherlands, pp. 5.221-5.224]. To overcome the limitations of previous models in simulating stomatal conductance when plants are exposed to drought stress, we proposed a down-regulating factor of chemical and hydraulic signalling on stomatal conductance as exp(-β[ABA])exp(-δ|ψ|) in which [ABA] and |ψ| are xylem ABA concentration and absolute value of leaf or stem water potential. In this study we found that stem water potential could be a very reliable indicator of how plant water status affects the stomatal conductance regulation. While previous models considered the same weighting for relative humidity and photosynthesis rate, we found that relative humidity has a more pronounced regulating effect on stomatal conductance than photosynthesis rate and the weightings for relative humidity and photosynthesis rate, respectively, were significantly higher and lower than unity.

U2 - 10.1016/j.agrformet.2009.04.009

DO - 10.1016/j.agrformet.2009.04.009

M3 - Journal article

VL - 149

SP - 1541

EP - 1551

JO - Agricultural and Forest Meteorology

JF - Agricultural and Forest Meteorology

SN - 0168-1923

IS - 9

ER -