High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions

The Plantarray 3.0 phenotyping platform® was used to monitor the growth and water use of the quinoa varieties Pasto and selRiobamba under salinity (0–300 mM NaCl). Salinity reduced the cumulative transpiration of both varieties by 60% at 200 mM NaCl and by 75 and 82% at 300 mM NaCl for selRiobamba and Pasto, respectively. Stomatal conductance was reduced by salinity, but at 200 mM NaCl Pasto showed a lower reduction (15%) than selRiobamba (35%), along with decreased specific leaf area. Diurnal changes in water use parameters indicate that under salt stress, daily transpiration in quinoa is less responsive to changes in light irradiance, and stomatal conductance is modulated to maximize CO2 uptake and minimize water loss following the changes in VPD (vapor pressure deficit). These changes might contribute to the enhanced water use efficiency of both varieties under salt stress. The mechanistic crop model LINTUL was used to integrate physiological responses into the radiation use efficiency of the plants (RUE), which was more reduced in Pasto than selRiobamba under salinity. By the end of the experiment (eleven weeks after sowing, six weeks after stress), the growth of Pasto was significantly lower than selRiobamba, fresh biomass was 50 and 35% reduced at 200 mM and 70 and 50% reduced at 300 mM NaCl for Pasto and selRiobamba, respectively. We argue that contrasting water management strategies can at least partly explain the differences in salt tolerance between Pasto and selRiobamba. Pasto adopted a “conservative-growth” strategy, saving water at the expense of growth, while selRiobamba used an “acquisitive-growth” strategy, maximizing growth in spite of the stress. The implementation of high-resolution phenotyping could help to dissect these complex growth traits that might be novel breeding targets for abiotic stress tolerance.

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Main Authors: Jaramillo Roman, Viviana, van de Zedde, Rick, Peller, Joseph, Visser, Richard G.F., van der Linden, C.G., van Loo, Eibertus N.
Format: Article/Letter to editor biblioteca
Language:English
Subjects:Plantarray, phenotyping, quinoa, radiation use efficiency, salt stress, stomatal conductance, transpiration, water use efficiency,
Online Access:https://research.wur.nl/en/publications/high-resolution-analysis-of-growth-and-transpiration-of-quinoa-un
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spelling dig-wur-nl-wurpubs-5866752024-12-04 Jaramillo Roman, Viviana van de Zedde, Rick Peller, Joseph Visser, Richard G.F. van der Linden, C.G. van Loo, Eibertus N. Article/Letter to editor Frontiers in Plant Science 12 (2021) ISSN: 1664-462X High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions 2021 The Plantarray 3.0 phenotyping platform® was used to monitor the growth and water use of the quinoa varieties Pasto and selRiobamba under salinity (0–300 mM NaCl). Salinity reduced the cumulative transpiration of both varieties by 60% at 200 mM NaCl and by 75 and 82% at 300 mM NaCl for selRiobamba and Pasto, respectively. Stomatal conductance was reduced by salinity, but at 200 mM NaCl Pasto showed a lower reduction (15%) than selRiobamba (35%), along with decreased specific leaf area. Diurnal changes in water use parameters indicate that under salt stress, daily transpiration in quinoa is less responsive to changes in light irradiance, and stomatal conductance is modulated to maximize CO2 uptake and minimize water loss following the changes in VPD (vapor pressure deficit). These changes might contribute to the enhanced water use efficiency of both varieties under salt stress. The mechanistic crop model LINTUL was used to integrate physiological responses into the radiation use efficiency of the plants (RUE), which was more reduced in Pasto than selRiobamba under salinity. By the end of the experiment (eleven weeks after sowing, six weeks after stress), the growth of Pasto was significantly lower than selRiobamba, fresh biomass was 50 and 35% reduced at 200 mM and 70 and 50% reduced at 300 mM NaCl for Pasto and selRiobamba, respectively. We argue that contrasting water management strategies can at least partly explain the differences in salt tolerance between Pasto and selRiobamba. Pasto adopted a “conservative-growth” strategy, saving water at the expense of growth, while selRiobamba used an “acquisitive-growth” strategy, maximizing growth in spite of the stress. The implementation of high-resolution phenotyping could help to dissect these complex growth traits that might be novel breeding targets for abiotic stress tolerance. en application/pdf https://research.wur.nl/en/publications/high-resolution-analysis-of-growth-and-transpiration-of-quinoa-un 10.3389/fpls.2021.634311 https://edepot.wur.nl/553408 Plantarray phenotyping quinoa radiation use efficiency salt stress stomatal conductance transpiration water use efficiency https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research
institution WUR NL
collection DSpace
country Países bajos
countrycode NL
component Bibliográfico
access En linea
databasecode dig-wur-nl
tag biblioteca
region Europa del Oeste
libraryname WUR Library Netherlands
language English
topic Plantarray
phenotyping
quinoa
radiation use efficiency
salt stress
stomatal conductance
transpiration
water use efficiency
Plantarray
phenotyping
quinoa
radiation use efficiency
salt stress
stomatal conductance
transpiration
water use efficiency
spellingShingle Plantarray
phenotyping
quinoa
radiation use efficiency
salt stress
stomatal conductance
transpiration
water use efficiency
Plantarray
phenotyping
quinoa
radiation use efficiency
salt stress
stomatal conductance
transpiration
water use efficiency
Jaramillo Roman, Viviana
van de Zedde, Rick
Peller, Joseph
Visser, Richard G.F.
van der Linden, C.G.
van Loo, Eibertus N.
High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
description The Plantarray 3.0 phenotyping platform® was used to monitor the growth and water use of the quinoa varieties Pasto and selRiobamba under salinity (0–300 mM NaCl). Salinity reduced the cumulative transpiration of both varieties by 60% at 200 mM NaCl and by 75 and 82% at 300 mM NaCl for selRiobamba and Pasto, respectively. Stomatal conductance was reduced by salinity, but at 200 mM NaCl Pasto showed a lower reduction (15%) than selRiobamba (35%), along with decreased specific leaf area. Diurnal changes in water use parameters indicate that under salt stress, daily transpiration in quinoa is less responsive to changes in light irradiance, and stomatal conductance is modulated to maximize CO2 uptake and minimize water loss following the changes in VPD (vapor pressure deficit). These changes might contribute to the enhanced water use efficiency of both varieties under salt stress. The mechanistic crop model LINTUL was used to integrate physiological responses into the radiation use efficiency of the plants (RUE), which was more reduced in Pasto than selRiobamba under salinity. By the end of the experiment (eleven weeks after sowing, six weeks after stress), the growth of Pasto was significantly lower than selRiobamba, fresh biomass was 50 and 35% reduced at 200 mM and 70 and 50% reduced at 300 mM NaCl for Pasto and selRiobamba, respectively. We argue that contrasting water management strategies can at least partly explain the differences in salt tolerance between Pasto and selRiobamba. Pasto adopted a “conservative-growth” strategy, saving water at the expense of growth, while selRiobamba used an “acquisitive-growth” strategy, maximizing growth in spite of the stress. The implementation of high-resolution phenotyping could help to dissect these complex growth traits that might be novel breeding targets for abiotic stress tolerance.
format Article/Letter to editor
topic_facet Plantarray
phenotyping
quinoa
radiation use efficiency
salt stress
stomatal conductance
transpiration
water use efficiency
author Jaramillo Roman, Viviana
van de Zedde, Rick
Peller, Joseph
Visser, Richard G.F.
van der Linden, C.G.
van Loo, Eibertus N.
author_facet Jaramillo Roman, Viviana
van de Zedde, Rick
Peller, Joseph
Visser, Richard G.F.
van der Linden, C.G.
van Loo, Eibertus N.
author_sort Jaramillo Roman, Viviana
title High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
title_short High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
title_full High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
title_fullStr High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
title_full_unstemmed High-Resolution Analysis of Growth and Transpiration of Quinoa Under Saline Conditions
title_sort high-resolution analysis of growth and transpiration of quinoa under saline conditions
url https://research.wur.nl/en/publications/high-resolution-analysis-of-growth-and-transpiration-of-quinoa-un
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AT visserrichardgf highresolutionanalysisofgrowthandtranspirationofquinoaundersalineconditions
AT vanderlindencg highresolutionanalysisofgrowthandtranspirationofquinoaundersalineconditions
AT vanlooeibertusn highresolutionanalysisofgrowthandtranspirationofquinoaundersalineconditions
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