Multiple abiotic stress, nitrate availability and the growth of wheat
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.still.2019.04.005 http://hdl.handle.net/11449/194859 |
Resumo: | In the field, wheat experiences a combination of physical and nutrient stresses. There has been a tendency to study root impedance and water stress in separation and less is known about how they might interact. In this study, we investigated the effect of root impedance on the growth of three wheat varieties (Cadenza, Xi19 and Battalion) at different levels of nitrate availability, from 0-20 mM nitrate, in sand culture. This model system allows soil strength to be increased while maintaining adequate water availability. In a separate pot experiment, we grew the same wheat varieties in a loamy sand where soil was allowed to dry sufficiently to both reduce water potential and increase root impedance. This pot experiment also had a range of nitrate availabilities 0-20 mM nitrate. Once the seedlings were established we limited water supply to apply a matric potential of approximately - 200 kPa to the roots. Soil drying increased the penetrometer resistance from approximately 300 kPa to more than 1 MPa. There were differences between the two experimental systems; growth was smaller in the soil-based experiment compared to the sand culture. However, the effects of the experimental treatment, root impedance or water withholding, relative to the control were comparable. Our data confirmed that leaf elongation in Cadenza (carrying the tall Rht allele) was the most sensitive to root impedance. Leaf stunting occurred irrespective of nitrate availability. Leaf elongation in the Xi19 and Battalion (carrying the semi-dwarf Rht allele) was less sensitive to root impedance and drought than Candenza. We suggest that the critical stress in a pot experiment where the soil was allowed to dry to approximately - 200 kPa was root impedance and not water availability. |
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Multiple abiotic stress, nitrate availability and the growth of wheatLeaf stuntingRoot impedanceNutrient stressIn the field, wheat experiences a combination of physical and nutrient stresses. There has been a tendency to study root impedance and water stress in separation and less is known about how they might interact. In this study, we investigated the effect of root impedance on the growth of three wheat varieties (Cadenza, Xi19 and Battalion) at different levels of nitrate availability, from 0-20 mM nitrate, in sand culture. This model system allows soil strength to be increased while maintaining adequate water availability. In a separate pot experiment, we grew the same wheat varieties in a loamy sand where soil was allowed to dry sufficiently to both reduce water potential and increase root impedance. This pot experiment also had a range of nitrate availabilities 0-20 mM nitrate. Once the seedlings were established we limited water supply to apply a matric potential of approximately - 200 kPa to the roots. Soil drying increased the penetrometer resistance from approximately 300 kPa to more than 1 MPa. There were differences between the two experimental systems; growth was smaller in the soil-based experiment compared to the sand culture. However, the effects of the experimental treatment, root impedance or water withholding, relative to the control were comparable. Our data confirmed that leaf elongation in Cadenza (carrying the tall Rht allele) was the most sensitive to root impedance. Leaf stunting occurred irrespective of nitrate availability. Leaf elongation in the Xi19 and Battalion (carrying the semi-dwarf Rht allele) was less sensitive to root impedance and drought than Candenza. We suggest that the critical stress in a pot experiment where the soil was allowed to dry to approximately - 200 kPa was root impedance and not water availability.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPEG-Goias Research FoundationFAPEMA-Maranhao Research FoundationBiotechnology and Biological Sciences Research CouncilDesigning Future Wheat Programme by the UK Biotechnology and Biological Sciences Research CouncilRothamsted Res, Harpenden AL5 2JQ, Herts, EnglandSao Paulo State Univ, Botucatu, SP, BrazilUniv Nottingham, Sch Biosci, Loughborough, Leics, EnglandSao Paulo State Univ, Botucatu, SP, BrazilFAPESP: 2015/50305-8FAPEG-Goias Research Foundation: 2015-10267001479FAPEMA-Maranhao Research Foundation: RCUK-02771/16Biotechnology and Biological Sciences Research Council: BB/N013201/1Designing Future Wheat Programme by the UK Biotechnology and Biological Sciences Research Council: BB/P016855/1Elsevier B.V.Rothamsted ResUniversidade Estadual Paulista (Unesp)Univ NottinghamGe, Y.Hawkesford, M. J.Rosolem, C. A. [UNESP]Mooney, S. J.Ashton, R. W.Evans, J.Whalley, W. R.2020-12-10T16:56:48Z2020-12-10T16:56:48Z2019-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article171-184http://dx.doi.org/10.1016/j.still.2019.04.005Soil & Tillage Research. Amsterdam: Elsevier, v. 191, p. 171-184, 2019.0167-1987http://hdl.handle.net/11449/19485910.1016/j.still.2019.04.005WOS:00048697690001857207758732595280000-0003-2001-0874Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSoil & Tillage Researchinfo:eu-repo/semantics/openAccess2021-10-22T22:17:02Zoai:repositorio.unesp.br:11449/194859Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T22:17:02Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Multiple abiotic stress, nitrate availability and the growth of wheat |
title |
Multiple abiotic stress, nitrate availability and the growth of wheat |
spellingShingle |
Multiple abiotic stress, nitrate availability and the growth of wheat Ge, Y. Leaf stunting Root impedance Nutrient stress |
title_short |
Multiple abiotic stress, nitrate availability and the growth of wheat |
title_full |
Multiple abiotic stress, nitrate availability and the growth of wheat |
title_fullStr |
Multiple abiotic stress, nitrate availability and the growth of wheat |
title_full_unstemmed |
Multiple abiotic stress, nitrate availability and the growth of wheat |
title_sort |
Multiple abiotic stress, nitrate availability and the growth of wheat |
author |
Ge, Y. |
author_facet |
Ge, Y. Hawkesford, M. J. Rosolem, C. A. [UNESP] Mooney, S. J. Ashton, R. W. Evans, J. Whalley, W. R. |
author_role |
author |
author2 |
Hawkesford, M. J. Rosolem, C. A. [UNESP] Mooney, S. J. Ashton, R. W. Evans, J. Whalley, W. R. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Rothamsted Res Universidade Estadual Paulista (Unesp) Univ Nottingham |
dc.contributor.author.fl_str_mv |
Ge, Y. Hawkesford, M. J. Rosolem, C. A. [UNESP] Mooney, S. J. Ashton, R. W. Evans, J. Whalley, W. R. |
dc.subject.por.fl_str_mv |
Leaf stunting Root impedance Nutrient stress |
topic |
Leaf stunting Root impedance Nutrient stress |
description |
In the field, wheat experiences a combination of physical and nutrient stresses. There has been a tendency to study root impedance and water stress in separation and less is known about how they might interact. In this study, we investigated the effect of root impedance on the growth of three wheat varieties (Cadenza, Xi19 and Battalion) at different levels of nitrate availability, from 0-20 mM nitrate, in sand culture. This model system allows soil strength to be increased while maintaining adequate water availability. In a separate pot experiment, we grew the same wheat varieties in a loamy sand where soil was allowed to dry sufficiently to both reduce water potential and increase root impedance. This pot experiment also had a range of nitrate availabilities 0-20 mM nitrate. Once the seedlings were established we limited water supply to apply a matric potential of approximately - 200 kPa to the roots. Soil drying increased the penetrometer resistance from approximately 300 kPa to more than 1 MPa. There were differences between the two experimental systems; growth was smaller in the soil-based experiment compared to the sand culture. However, the effects of the experimental treatment, root impedance or water withholding, relative to the control were comparable. Our data confirmed that leaf elongation in Cadenza (carrying the tall Rht allele) was the most sensitive to root impedance. Leaf stunting occurred irrespective of nitrate availability. Leaf elongation in the Xi19 and Battalion (carrying the semi-dwarf Rht allele) was less sensitive to root impedance and drought than Candenza. We suggest that the critical stress in a pot experiment where the soil was allowed to dry to approximately - 200 kPa was root impedance and not water availability. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-08-01 2020-12-10T16:56:48Z 2020-12-10T16:56:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.still.2019.04.005 Soil & Tillage Research. Amsterdam: Elsevier, v. 191, p. 171-184, 2019. 0167-1987 http://hdl.handle.net/11449/194859 10.1016/j.still.2019.04.005 WOS:000486976900018 5720775873259528 0000-0003-2001-0874 |
url |
http://dx.doi.org/10.1016/j.still.2019.04.005 http://hdl.handle.net/11449/194859 |
identifier_str_mv |
Soil & Tillage Research. Amsterdam: Elsevier, v. 191, p. 171-184, 2019. 0167-1987 10.1016/j.still.2019.04.005 WOS:000486976900018 5720775873259528 0000-0003-2001-0874 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Soil & Tillage Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
171-184 |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789410288205824 |