Fluorescence imaging of light acclimation of brazilian atlantic forest tree species

Title:

Fluorescence imaging of light acclimation of brazilian atlantic forest tree species

Creator:

Dos Anjos, L., Oliva, M. A., and Kuki, K. N.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:c9d89509-216d-4c9b-be64-5590fa9a9815
uuid:c9d89509-216d-4c9b-be64-5590fa9a9815
issn:0300-3604
doi:10.1007/s11099-012-0018-6

Subject:

botanika, botany, chlorophyll fluorescence, light stress, photochemical efficiency, thermal dissipation, xanthophyll cycle, 2, and 58

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In the pursuit of knowledge on the biological behavior of Brazilian Atlantic Forest tree species, this study evaluated the susceptibility of the light-demanding species, Schinus terebinthifolia Raddi., Pseudobombax grandiflorum (Cav.) A. Robyns and Joannesia princeps Vell., and of the shade-tolerant species, Hymenaea courbaril L. var. stilbocarpa and Lecythis pisonis Camb, to photoinhibition and acclimation capacity. These species were first cultivated under two irradiance conditions, I20 (20% direct sunlight radiation) and I100 (all-sky or direct sunlight) and then transferred from I20 to I100. The effects of the sudden increase in light radiation intensity on photosynthetic activity were then evaluated through chlorophyll (Chl) fluorescence imaging, HPLC xanthophylls analysis, and cell membrane lipid peroxidation measurements. Light-demanding species were found to present a higher photochemical efficiency and higher acclimation capacity under high light irradiance than shade-tolerant species. The higher photoinhibition tolerance observed in light-demanding species was associated to their higher capacity for photochemical dissipation and dissipation of excess excitation energy via the xanthophyll cycle, leading to a lower ROS generation. The obtained results suggested that a knowledge of acclimation capacity, by means of Chl fluorescence imaging yields, is a useful indicator of species successional grouping., L. Dos Anjos, M. A. Oliva, and K. N. Kuki., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

95-108

Source:

Photosynthetica | 2012 Volume:50 | Number:1

Harvested from:

CDK

Metadata only:

false