PoplarV1, Main, Exploration, bibRecord, 003874

Light controls shoot meristem organogenic activity and leaf primordia growth during bud burst in Rosa sp.

Identifieur interne : 003874 ( Main/Exploration ); précédent : 003873; suivant : 003875

Light 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 Leduc

Source :

Plant, cell & environment [ 1365-3040 ] ; 2008.

RBID : pubmed:18643902

Descripteurs français

KwdFr :
- Feuilles de plante (croissance et développement), Lumière (MeSH), Méristème (croissance et développement), Obscurité (MeSH), Organogenèse (MeSH), Rosa (croissance et développement), Tiges de plante (croissance et développement).
MESH :
- croissance et développement : Feuilles de plante, Méristème, Rosa, Tiges de plante.
- Lumière, Obscurité, Organogenèse.

English descriptors

KwdEn :
- Darkness (MeSH), Light (MeSH), Meristem (growth & development), Organogenesis (MeSH), Plant Leaves (growth & development), Plant Stems (growth & development), Rosa (growth & development).
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:

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Le document en format XML

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<term>Light (MeSH)</term>
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<term>Plant Leaves (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>
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<term>Obscurité (MeSH)</term>
<term>Organogenèse (MeSH)</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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Light controls shoot meristem organogenic activity and leaf primordia growth during bud burst in Rosa sp.

Light controls shoot meristem organogenic activity and leaf primordia growth during bud burst in Rosa sp.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki