Chloroplast movements in leaves of two evergreen sclerophyllous plants (Ilex aquifolium and Prunus laurocerasus)

Citation
Am. Del Hierro et al., Chloroplast movements in leaves of two evergreen sclerophyllous plants (Ilex aquifolium and Prunus laurocerasus), PL BIOSYST, 134(3), 2000, pp. 297-304
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
PLANT BIOSYSTEMS
ISSN journal
1126-3504 → ACNP
Volume
134
Issue
3
Year of publication
2000
Pages
297 - 304
Database
ISI
SICI code
1126-3504(2000)134:3<297:CMILOT>2.0.ZU;2-P
Abstract
Chloroplast movements provide a means for fine-tuning the absorption of rad iation in leaves. Since evergreen sclerophylls may experience very differen t light levels during the seasons and at different locations either at the periphery or in the interior of a forest, such a mechanism must theoretical ly be of great importance for them. Detailed field and laboratory studies o n sclerophylls are however lacking. We provide first evidence that chloropl asts in the leaf mesophyll of Loth Ilex aquifolium (holly) and Prunus lauro cerasus (cherry laurel) may be stimulated by low light intensities. Even at winter temperatures close to freezing, chloroplasts move to a position a h ere light absorption is increased. Effects of temperature, light pretreatme nt and light quality for the induction of movement are described.