Autophagy regulated by day length determines the number of fertile florets in wheat
The wheat spikelet meristem differentiates into up to 12 floret primordia, but many of them fail to reach the fertile floret stage at anthesis. We combined microarray, biochemical and anatomical studies to investigate floret development in wheat plants grown in the field under short or long days (sh...
| Autores principales: | , , , , , , , , |
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| Formato: | Artículo publishedVersion |
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2008
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09607412_v55_n6_p1010_Ghiglione https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09607412_v55_n6_p1010_Ghiglione_oai |
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I28-R145-paper_09607412_v55_n6_p1010_Ghiglione_oai2024-08-16 Ghiglione, H.O. Gonzalez, F.G. Serrago, R. Maldonado, S.B. Chilcott, C. Curá, J.A. Miralles, D.J. Zhu, T. Casal, J.J. 2008 The wheat spikelet meristem differentiates into up to 12 floret primordia, but many of them fail to reach the fertile floret stage at anthesis. We combined microarray, biochemical and anatomical studies to investigate floret development in wheat plants grown in the field under short or long days (short days extended with low-fluence light) after all the spikelets had already differentiated. Long days accelerated spike and floret development and greening, and the expression of genes involved in photosynthesis, photoprotection and carbohydrate metabolism. These changes started while the spike was in the light-depleted environment created by the surrounding leaf sheaths. Cell division ceased in the tissues of distal florets, which interrupted their normal developmental progression and initiated autophagy, thus decreasing the number of fertile florets at anthesis. A massive decrease in the expression of genes involved in cell proliferation, a decrease in soluble carbohydrate levels, and an increase in the expression of genes involved in programmed cell death accompanied anatomical signs of cell death, and these effects were stronger under long days. We propose a model in which developmentally generated sugar starvation triggers floret autophagy, and long days intensify these processes due to the increased carbohydrate consumption caused by the accelerated plant development. © 2008 The Authors. application/pdf http://hdl.handle.net/20.500.12110/paper_09607412_v55_n6_p1010_Ghiglione info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Plant J. 2008;55(6):1010-1024 Autophagy Floret development Transcriptome Wheat plant RNA sucrose article autophagy carbohydrate metabolism cell death cell division cell proliferation DNA microarray fertility flower gene gene expression profiling gene expression regulation genetics growth, development and aging meristem metabolism photoperiodicity photosynthesis wheat Autophagy Carbohydrate Metabolism Cell Death Cell Division Cell Proliferation Fertility Flowers Gene Expression Profiling Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Plant Meristem Oligonucleotide Array Sequence Analysis Photoperiod Photosynthesis RNA, Plant Sucrose Triticum Triticum aestivum Autophagy regulated by day length determines the number of fertile florets in wheat info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09607412_v55_n6_p1010_Ghiglione_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| topic |
Autophagy Floret development Transcriptome Wheat plant RNA sucrose article autophagy carbohydrate metabolism cell death cell division cell proliferation DNA microarray fertility flower gene gene expression profiling gene expression regulation genetics growth, development and aging meristem metabolism photoperiodicity photosynthesis wheat Autophagy Carbohydrate Metabolism Cell Death Cell Division Cell Proliferation Fertility Flowers Gene Expression Profiling Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Plant Meristem Oligonucleotide Array Sequence Analysis Photoperiod Photosynthesis RNA, Plant Sucrose Triticum Triticum aestivum |
| spellingShingle |
Autophagy Floret development Transcriptome Wheat plant RNA sucrose article autophagy carbohydrate metabolism cell death cell division cell proliferation DNA microarray fertility flower gene gene expression profiling gene expression regulation genetics growth, development and aging meristem metabolism photoperiodicity photosynthesis wheat Autophagy Carbohydrate Metabolism Cell Death Cell Division Cell Proliferation Fertility Flowers Gene Expression Profiling Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Plant Meristem Oligonucleotide Array Sequence Analysis Photoperiod Photosynthesis RNA, Plant Sucrose Triticum Triticum aestivum Ghiglione, H.O. Gonzalez, F.G. Serrago, R. Maldonado, S.B. Chilcott, C. Curá, J.A. Miralles, D.J. Zhu, T. Casal, J.J. Autophagy regulated by day length determines the number of fertile florets in wheat |
| topic_facet |
Autophagy Floret development Transcriptome Wheat plant RNA sucrose article autophagy carbohydrate metabolism cell death cell division cell proliferation DNA microarray fertility flower gene gene expression profiling gene expression regulation genetics growth, development and aging meristem metabolism photoperiodicity photosynthesis wheat Autophagy Carbohydrate Metabolism Cell Death Cell Division Cell Proliferation Fertility Flowers Gene Expression Profiling Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Plant Meristem Oligonucleotide Array Sequence Analysis Photoperiod Photosynthesis RNA, Plant Sucrose Triticum Triticum aestivum |
| description |
The wheat spikelet meristem differentiates into up to 12 floret primordia, but many of them fail to reach the fertile floret stage at anthesis. We combined microarray, biochemical and anatomical studies to investigate floret development in wheat plants grown in the field under short or long days (short days extended with low-fluence light) after all the spikelets had already differentiated. Long days accelerated spike and floret development and greening, and the expression of genes involved in photosynthesis, photoprotection and carbohydrate metabolism. These changes started while the spike was in the light-depleted environment created by the surrounding leaf sheaths. Cell division ceased in the tissues of distal florets, which interrupted their normal developmental progression and initiated autophagy, thus decreasing the number of fertile florets at anthesis. A massive decrease in the expression of genes involved in cell proliferation, a decrease in soluble carbohydrate levels, and an increase in the expression of genes involved in programmed cell death accompanied anatomical signs of cell death, and these effects were stronger under long days. We propose a model in which developmentally generated sugar starvation triggers floret autophagy, and long days intensify these processes due to the increased carbohydrate consumption caused by the accelerated plant development. © 2008 The Authors. |
| format |
Artículo Artículo publishedVersion |
| author |
Ghiglione, H.O. Gonzalez, F.G. Serrago, R. Maldonado, S.B. Chilcott, C. Curá, J.A. Miralles, D.J. Zhu, T. Casal, J.J. |
| author_facet |
Ghiglione, H.O. Gonzalez, F.G. Serrago, R. Maldonado, S.B. Chilcott, C. Curá, J.A. Miralles, D.J. Zhu, T. Casal, J.J. |
| author_sort |
Ghiglione, H.O. |
| title |
Autophagy regulated by day length determines the number of fertile florets in wheat |
| title_short |
Autophagy regulated by day length determines the number of fertile florets in wheat |
| title_full |
Autophagy regulated by day length determines the number of fertile florets in wheat |
| title_fullStr |
Autophagy regulated by day length determines the number of fertile florets in wheat |
| title_full_unstemmed |
Autophagy regulated by day length determines the number of fertile florets in wheat |
| title_sort |
autophagy regulated by day length determines the number of fertile florets in wheat |
| publishDate |
2008 |
| url |
http://hdl.handle.net/20.500.12110/paper_09607412_v55_n6_p1010_Ghiglione https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09607412_v55_n6_p1010_Ghiglione_oai |
| work_keys_str_mv |
AT ghiglioneho autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT gonzalezfg autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT serragor autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT maldonadosb autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT chilcottc autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT curaja autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT mirallesdj autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT zhut autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat AT casaljj autophagyregulatedbydaylengthdeterminesthenumberoffertilefloretsinwheat |
| _version_ |
1809356824933040128 |