Leaf and photosynthetic characteristics of pioneer and forest species in tropical montane habitats

Title:

Leaf and photosynthetic characteristics of pioneer and forest species in tropical montane habitats

Creator:

Sobrado, M. A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2deb288d-8dca-4caf-902f-91567ed8b7d5
uuid:2deb288d-8dca-4caf-902f-91567ed8b7d5
issn:0300-3604
doi:10.1007/s11099-008-0101-1

Subject:

Chletra, chlorophyll a fluorescence, Croton, Ficus, intercellular CO2 concentration, leafe age, Oyedea, photoinhibition, photoprotection, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Gas exchange and chlorophyll a fluorescence measurements of expanding and adult leaves of four plant species were compared under field conditions. The pioneer species (PS) tended to have thinner leaves with lower nitrogen content and higher stomatal density compared to forest species (FS). Expanding leaves featured lower photosynthetic pigment contents and gas exchange capacity than adult leaves consistent with an immature photosynthetic apparatus. At the time of maximum irradiance, sun-exposed leaves of both PS and FS showed alteration of initial, variable, and maximum fluorescence as well as their ratios indicating photoinhibition. However, leaves recovered to some extent at predawn, suggesting the activation of photoprotective mechanisms. Sun-exposed leaves had comparable responses to high irradiance.

Language:

Multiple languages

Rights:

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

Coverage:

604-610

Source:

Photosynthetica | 2008 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false