Effect of Horizontal Clinorotation on the Root System Development and on Lipid Breakdown in Rapeseed (Brassica napus) Seedlings
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概要
- 論文の詳細を見る
Seedlings of Brassica napus were cultivated on a slowly rotating clinostat (1 rpm) or in the vertical control for 5 d. The root growth, the cotyledonary reserves and the transport of ^<14>C-labeled sucrose from cotyledons to root system were studied in both cultural conditions. The biomass (fresh weight) of the root system was 35% higher in the horizontally clinorotated seedlings than in the controls. This increase was correlated with a greater degradation of reserve lipids and faster accumulation of sucrose in the cotyledons. The activity of isocitrate lyase, one of the two enzymes necessary to conversion of lipids into glucids, was also greater in the cotyledons of clinorotated seedlings. The labeling distribution of ^<14>C in the cotyledons, the hypocotyl and the root system after 30, 60 and 120 min of application of ^<14>C-labeled sucrose on the cotyledons showed higher translocation of the cotyledonary sucrose to the root system of clinorotated seedlings. In addition, we studied the effects of clinorotation on the biomass of the excised root system (of 10 d old seedlings) cultivated in a medium containing 1% sucrose. The horizontally clinorotated root system grew more than that of the controls. These results showed that the horizontal clinorotation acted on the root system growth and provoked a higher sucrose translocation from source to sink, i.e.from cotyledons to root system.
- 日本植物生理学会の論文
著者
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Demandre Chantal
Laboratoire De Physiologie Cellulaire Et Moleculaire Universite Pierre Et Marie Curie
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Aarrouf Jawad
Laboratoire de Cytologie Experimentale et Morphogenese Vegetale, Universite Pierre et Marie Curie
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Darbelley Nicole
Laboratoire de Biologie Vegetale, Faculte des Sciences d'Avignon
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Razafindramboa Njara
Laboratoire de Chimie Bio-Organique, Faculte des Sciences d'Avignon
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Perbal Gerald
Laboratoire de Cytologie Experimentale et Morphogenese Vegetale, Universite Pierre et Marie Curie
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Perbal Gerald
Laboratoire De Cytologie Experimentale Et Morphogenese Vegetale Universite Pierre Et Marie Curie
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Aarrouf Jawad
Laboratoire De Cytologie Experimentale Et Morphogenese Vegetale Universite Pierre Et Marie Curie
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Darbelley N
Laboratoire De Biologie Vegetale Faculte Des Sciences D'avignon
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Darbelley Nicole
Laboratoire De Biologie Vegetale Experimentale Universite
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Razafindramboa N
Laboratoire De Chimie Bio-organique Faculte Des Sciences D'avignon
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Razafindramboa Njara
Laboratoire De Chimie Bio-organique Universite
関連論文
- Effect of Horizontal Clinorotation on the Root System Development and on Lipid Breakdown in Rapeseed (Brassica napus) Seedlings
- Light Effects on α-amylase Activity and Carbohydrate Content in Relation to Lipid Mobilization during the Seedling Growth of Sunflower