Light controls shoot meristem organogenic activity and leaf primordia growth during bud burst in Rosa sp.
Identifieur interne : 003874 ( Main/Exploration ); précédent : 003873; suivant : 003875Light controls shoot meristem organogenic activity and leaf primordia growth during bud burst in Rosa sp.
Auteurs : Tiffanie Girault [France] ; Veronique Bergougnoux ; Didier Combes ; Jean-Daniel Viemont ; Nathalie LeducSource :
- Plant, cell & environment [ 1365-3040 ] ; 2008.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Feuilles de plante, Méristème, Rosa, Tiges de plante.
- Lumière, Obscurité, Organogenèse.
English descriptors
- KwdEn :
- MESH :
- growth & development : Meristem, Plant Leaves, Plant Stems, Rosa.
- Darkness, Light, Organogenesis.
Abstract
Light controls bud burst in many plants, which subsequently affects their architecture. Nevertheless, very little is known about this photomorphogenic process. This study ascertains the effects of light on bud burst and on two of its components, i.e. growth of preformed leaves and meristem organogenesis in six cultivars from three Rosa species (R. hybrida L., R. chinensis L., R. wichurana L.). Defoliated plants were severed above the third basal bud and exposed, either to darkness or to different intensities of white light, to blue, red or to FR, at constant temperature. Bud bursting was inhibited in darkness in the six cultivars of Rosa, but not in Arabidopsis, tomato and poplar plants under the same condition. In all Rosa cultivars, bud burst, growth of preformed leaves and meristem organogenesis were triggered by blue and red lights, and extended by increasing light intensities. FR was inhibitory of bud burst. Partial shading experiments demonstrated that bud and not stem was the active site for light perception in bud burst.
DOI: 10.1111/j.1365-3040.2008.01856.x
PubMed: 18643902
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<author><name sortKey="Combes, Didier" sort="Combes, Didier" uniqKey="Combes D" first="Didier" last="Combes">Didier Combes</name>
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<author><name sortKey="Viemont, Jean Daniel" sort="Viemont, Jean Daniel" uniqKey="Viemont J" first="Jean-Daniel" last="Viemont">Jean-Daniel Viemont</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Darkness (MeSH)</term>
<term>Light (MeSH)</term>
<term>Meristem (growth & development)</term>
<term>Organogenesis (MeSH)</term>
<term>Plant Leaves (growth & development)</term>
<term>Plant Stems (growth & development)</term>
<term>Rosa (growth & development)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Feuilles de plante (croissance et développement)</term>
<term>Lumière (MeSH)</term>
<term>Méristème (croissance et développement)</term>
<term>Obscurité (MeSH)</term>
<term>Organogenèse (MeSH)</term>
<term>Rosa (croissance et développement)</term>
<term>Tiges de plante (croissance et développement)</term>
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<front><div type="abstract" xml:lang="en">Light controls bud burst in many plants, which subsequently affects their architecture. Nevertheless, very little is known about this photomorphogenic process. This study ascertains the effects of light on bud burst and on two of its components, i.e. growth of preformed leaves and meristem organogenesis in six cultivars from three Rosa species (R. hybrida L., R. chinensis L., R. wichurana L.). Defoliated plants were severed above the third basal bud and exposed, either to darkness or to different intensities of white light, to blue, red or to FR, at constant temperature. Bud bursting was inhibited in darkness in the six cultivars of Rosa, but not in Arabidopsis, tomato and poplar plants under the same condition. In all Rosa cultivars, bud burst, growth of preformed leaves and meristem organogenesis were triggered by blue and red lights, and extended by increasing light intensities. FR was inhibitory of bud burst. Partial shading experiments demonstrated that bud and not stem was the active site for light perception in bud burst.</div>
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