Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology
Sugar accumulation in sorghum (Sorghum bicolor (L.) Moench) stems is a complex trait that is particularly plastic in response to photoperiod. This study investigated sucrose accumulation in a sterile (no grain filling) and fertile nearisogenic line of the photoperiod-sensitive cultivar IS2848 in two greenhouse experiments. Variable phenology was induced by applying a short (12-h PP) and a long (13-h PP) photoperiod. Dynamics of plant growth, phenology, sugar accumulation and related enzyme activities in internodes were investigated. Under 13-h PP, plants flowered 28 days later and attained threefold higher sucrose concentration at anthesis compared with those under 12-h PP. Sucrose accumulation in individual internodes was driven by organ physiological age, not by plant phenology. Competition with grain filling was marginal but greater under 12-h PP (i.e. when sucrose accumulation in internodes occurred after flowering). Enzyme activities showed marked developmental patterns but contributed little to explaining differences between treatments and genotypes. The study demonstrates that sucrose storage physiology in sweet sorghum resembles that of sugarcane (Saccharum spp.) but is more complex due to photoperiod effects on phenology. It confirms the field results on 14 sorghum genotypes contrasting for phenology and photoperiod sensitivity presented in a companion paper. Perspectives for developing sorghum ideotype concepts for food and fuel crops are discussed.
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Subjects: | F60 - Physiologie et biochimie végétale, F30 - Génétique et amélioration des plantes, Sorghum bicolor, métabolisme des glucides, photopériodicité, génotype, entre noeud, remplissage du grain, saccharose, physiologie végétale, activité enzymatique, phénologie, http://aims.fao.org/aos/agrovoc/c_7247, http://aims.fao.org/aos/agrovoc/c_1299, http://aims.fao.org/aos/agrovoc/c_5809, http://aims.fao.org/aos/agrovoc/c_3225, http://aims.fao.org/aos/agrovoc/c_3920, http://aims.fao.org/aos/agrovoc/c_26785, http://aims.fao.org/aos/agrovoc/c_7495, http://aims.fao.org/aos/agrovoc/c_25189, http://aims.fao.org/aos/agrovoc/c_2604, http://aims.fao.org/aos/agrovoc/c_5774, http://aims.fao.org/aos/agrovoc/c_7252, |
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dig-cirad-fr-5689492024-02-16T19:01:42Z http://agritrop.cirad.fr/568949/ http://agritrop.cirad.fr/568949/ Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology. Gutjahr Sylvain, Clément-Vidal Anne, Soutiras Armelle, Sonderegger Nicole, Braconnier Serge, Dingkuhn Michaël, Luquet Delphine. 2013. Functional Plant Biology, 40 (4) : 355-368.https://doi.org/10.1071/FP12177 <https://doi.org/10.1071/FP12177> Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology Gutjahr, Sylvain Clément-Vidal, Anne Soutiras, Armelle Sonderegger, Nicole Braconnier, Serge Dingkuhn, Michaël Luquet, Delphine eng 2013 Functional Plant Biology F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 Afrique du Sud http://aims.fao.org/aos/agrovoc/c_7252 Sugar accumulation in sorghum (Sorghum bicolor (L.) Moench) stems is a complex trait that is particularly plastic in response to photoperiod. This study investigated sucrose accumulation in a sterile (no grain filling) and fertile nearisogenic line of the photoperiod-sensitive cultivar IS2848 in two greenhouse experiments. Variable phenology was induced by applying a short (12-h PP) and a long (13-h PP) photoperiod. Dynamics of plant growth, phenology, sugar accumulation and related enzyme activities in internodes were investigated. Under 13-h PP, plants flowered 28 days later and attained threefold higher sucrose concentration at anthesis compared with those under 12-h PP. Sucrose accumulation in individual internodes was driven by organ physiological age, not by plant phenology. Competition with grain filling was marginal but greater under 12-h PP (i.e. when sucrose accumulation in internodes occurred after flowering). Enzyme activities showed marked developmental patterns but contributed little to explaining differences between treatments and genotypes. The study demonstrates that sucrose storage physiology in sweet sorghum resembles that of sugarcane (Saccharum spp.) but is more complex due to photoperiod effects on phenology. It confirms the field results on 14 sorghum genotypes contrasting for phenology and photoperiod sensitivity presented in a companion paper. Perspectives for developing sorghum ideotype concepts for food and fuel crops are discussed. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/568949/1/document_568949.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1071/FP12177 10.1071/FP12177 info:eu-repo/semantics/altIdentifier/doi/10.1071/FP12177 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1071/FP12177 |
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F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_7252 F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_7252 |
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F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_7252 F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_7252 Gutjahr, Sylvain Clément-Vidal, Anne Soutiras, Armelle Sonderegger, Nicole Braconnier, Serge Dingkuhn, Michaël Luquet, Delphine Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
description |
Sugar accumulation in sorghum (Sorghum bicolor (L.) Moench) stems is a complex trait that is particularly plastic in response to photoperiod. This study investigated sucrose accumulation in a sterile (no grain filling) and fertile nearisogenic line of the photoperiod-sensitive cultivar IS2848 in two greenhouse experiments. Variable phenology was induced by applying a short (12-h PP) and a long (13-h PP) photoperiod. Dynamics of plant growth, phenology, sugar accumulation and related enzyme activities in internodes were investigated. Under 13-h PP, plants flowered 28 days later and attained threefold higher sucrose concentration at anthesis compared with those under 12-h PP. Sucrose accumulation in individual internodes was driven by organ physiological age, not by plant phenology. Competition with grain filling was marginal but greater under 12-h PP (i.e. when sucrose accumulation in internodes occurred after flowering). Enzyme activities showed marked developmental patterns but contributed little to explaining differences between treatments and genotypes. The study demonstrates that sucrose storage physiology in sweet sorghum resembles that of sugarcane (Saccharum spp.) but is more complex due to photoperiod effects on phenology. It confirms the field results on 14 sorghum genotypes contrasting for phenology and photoperiod sensitivity presented in a companion paper. Perspectives for developing sorghum ideotype concepts for food and fuel crops are discussed. |
format |
article |
topic_facet |
F60 - Physiologie et biochimie végétale F30 - Génétique et amélioration des plantes Sorghum bicolor métabolisme des glucides photopériodicité génotype entre noeud remplissage du grain saccharose physiologie végétale activité enzymatique phénologie http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1299 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_3920 http://aims.fao.org/aos/agrovoc/c_26785 http://aims.fao.org/aos/agrovoc/c_7495 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_2604 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_7252 |
author |
Gutjahr, Sylvain Clément-Vidal, Anne Soutiras, Armelle Sonderegger, Nicole Braconnier, Serge Dingkuhn, Michaël Luquet, Delphine |
author_facet |
Gutjahr, Sylvain Clément-Vidal, Anne Soutiras, Armelle Sonderegger, Nicole Braconnier, Serge Dingkuhn, Michaël Luquet, Delphine |
author_sort |
Gutjahr, Sylvain |
title |
Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
title_short |
Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
title_full |
Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
title_fullStr |
Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
title_full_unstemmed |
Grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. II. Biochemical processes at internode level and interaction with phenology |
title_sort |
grain, sugar and biomass accumulation in photoperiod-sensitive sorghums. ii. biochemical processes at internode level and interaction with phenology |
url |
http://agritrop.cirad.fr/568949/ http://agritrop.cirad.fr/568949/1/document_568949.pdf |
work_keys_str_mv |
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