Phytochrome regulation of branching in arabidopsis
- Autores
- Finlayson, Scott A.; Krishnareddy, Srirama R.; Kebrom, Tesfamichael H.; Casal, Jorge José
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana). Here, we show that in Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and an increased degree of correlative inhibition acting on the buds rather than due to a reduced number of leaves and buds available for branching. Phytochrome effects on the degree of correlative inhibition required functional BRANCHED1 (BRC1), BRC2, AXR1, MORE AXILLARY GROWTH2 (MAX2), and MAX4. The analysis of gene expression in selected buds indicated that BRC1 and BRC2 are part of different gene networks. The BRC1 network is linked to the growth capacity of specific buds, while the BRC2 network is associated with coordination of growth among branches. We conclude that the branching integrators BRC1 and BRC2 are necessary for responses to phytochrome, but they contribute differentially to these responses, likely acting through divergent pathways. © 2010 American Society of Plant Biologists.
Fil: Finlayson, Scott A.. Texas A&M University; Estados Unidos
Fil: Krishnareddy, Srirama R.. Texas A&M University; Estados Unidos
Fil: Kebrom, Tesfamichael H.. Texas A&M University; Estados Unidos
Fil: Casal, Jorge José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina - Materia
-
Branching
Phytochrome
Arabidopsis thaliana
Development - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/72292
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Phytochrome regulation of branching in arabidopsisFinlayson, Scott A.Krishnareddy, Srirama R.Kebrom, Tesfamichael H.Casal, Jorge JoséBranchingPhytochromeArabidopsis thalianaDevelopmenthttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana). Here, we show that in Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and an increased degree of correlative inhibition acting on the buds rather than due to a reduced number of leaves and buds available for branching. Phytochrome effects on the degree of correlative inhibition required functional BRANCHED1 (BRC1), BRC2, AXR1, MORE AXILLARY GROWTH2 (MAX2), and MAX4. The analysis of gene expression in selected buds indicated that BRC1 and BRC2 are part of different gene networks. The BRC1 network is linked to the growth capacity of specific buds, while the BRC2 network is associated with coordination of growth among branches. We conclude that the branching integrators BRC1 and BRC2 are necessary for responses to phytochrome, but they contribute differentially to these responses, likely acting through divergent pathways. © 2010 American Society of Plant Biologists.Fil: Finlayson, Scott A.. Texas A&M University; Estados UnidosFil: Krishnareddy, Srirama R.. Texas A&M University; Estados UnidosFil: Kebrom, Tesfamichael H.. Texas A&M University; Estados UnidosFil: Casal, Jorge José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaAmerican Society of Plant Biologist2010-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72292Finlayson, Scott A.; Krishnareddy, Srirama R.; Kebrom, Tesfamichael H.; Casal, Jorge José; Phytochrome regulation of branching in arabidopsis; American Society of Plant Biologist; Plant Physiology; 152; 4; 4-2010; 1914-19270032-0889CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1104/pp.109.148833info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/152/4/1914info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:24Zoai:ri.conicet.gov.ar:11336/72292instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:55:25.254CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Phytochrome regulation of branching in arabidopsis |
title |
Phytochrome regulation of branching in arabidopsis |
spellingShingle |
Phytochrome regulation of branching in arabidopsis Finlayson, Scott A. Branching Phytochrome Arabidopsis thaliana Development |
title_short |
Phytochrome regulation of branching in arabidopsis |
title_full |
Phytochrome regulation of branching in arabidopsis |
title_fullStr |
Phytochrome regulation of branching in arabidopsis |
title_full_unstemmed |
Phytochrome regulation of branching in arabidopsis |
title_sort |
Phytochrome regulation of branching in arabidopsis |
dc.creator.none.fl_str_mv |
Finlayson, Scott A. Krishnareddy, Srirama R. Kebrom, Tesfamichael H. Casal, Jorge José |
author |
Finlayson, Scott A. |
author_facet |
Finlayson, Scott A. Krishnareddy, Srirama R. Kebrom, Tesfamichael H. Casal, Jorge José |
author_role |
author |
author2 |
Krishnareddy, Srirama R. Kebrom, Tesfamichael H. Casal, Jorge José |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Branching Phytochrome Arabidopsis thaliana Development |
topic |
Branching Phytochrome Arabidopsis thaliana Development |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana). Here, we show that in Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and an increased degree of correlative inhibition acting on the buds rather than due to a reduced number of leaves and buds available for branching. Phytochrome effects on the degree of correlative inhibition required functional BRANCHED1 (BRC1), BRC2, AXR1, MORE AXILLARY GROWTH2 (MAX2), and MAX4. The analysis of gene expression in selected buds indicated that BRC1 and BRC2 are part of different gene networks. The BRC1 network is linked to the growth capacity of specific buds, while the BRC2 network is associated with coordination of growth among branches. We conclude that the branching integrators BRC1 and BRC2 are necessary for responses to phytochrome, but they contribute differentially to these responses, likely acting through divergent pathways. © 2010 American Society of Plant Biologists. Fil: Finlayson, Scott A.. Texas A&M University; Estados Unidos Fil: Krishnareddy, Srirama R.. Texas A&M University; Estados Unidos Fil: Kebrom, Tesfamichael H.. Texas A&M University; Estados Unidos Fil: Casal, Jorge José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina |
description |
The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana). Here, we show that in Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and an increased degree of correlative inhibition acting on the buds rather than due to a reduced number of leaves and buds available for branching. Phytochrome effects on the degree of correlative inhibition required functional BRANCHED1 (BRC1), BRC2, AXR1, MORE AXILLARY GROWTH2 (MAX2), and MAX4. The analysis of gene expression in selected buds indicated that BRC1 and BRC2 are part of different gene networks. The BRC1 network is linked to the growth capacity of specific buds, while the BRC2 network is associated with coordination of growth among branches. We conclude that the branching integrators BRC1 and BRC2 are necessary for responses to phytochrome, but they contribute differentially to these responses, likely acting through divergent pathways. © 2010 American Society of Plant Biologists. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-04 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/72292 Finlayson, Scott A.; Krishnareddy, Srirama R.; Kebrom, Tesfamichael H.; Casal, Jorge José; Phytochrome regulation of branching in arabidopsis; American Society of Plant Biologist; Plant Physiology; 152; 4; 4-2010; 1914-1927 0032-0889 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/72292 |
identifier_str_mv |
Finlayson, Scott A.; Krishnareddy, Srirama R.; Kebrom, Tesfamichael H.; Casal, Jorge José; Phytochrome regulation of branching in arabidopsis; American Society of Plant Biologist; Plant Physiology; 152; 4; 4-2010; 1914-1927 0032-0889 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1104/pp.109.148833 info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/152/4/1914 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Society of Plant Biologist |
publisher.none.fl_str_mv |
American Society of Plant Biologist |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |