Updating the occurrence of crassulacean acid metabolism (CAM) in the genus Clusia through carbon isotope analysis of species from Colombia

Title:

Updating the occurrence of crassulacean acid metabolism (CAM) in the genus Clusia through carbon isotope analysis of species from Colombia

Creator:

Pachon, P., Winter, K., and Lasso, E.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:314e1471-ec8e-48f8-a0bf-a30fee1cb239
uuid:314e1471-ec8e-48f8-a0bf-a30fee1cb239
doi:10.32615/ps.2022.018

Subject:

C3 photosynthesis, CAM photosynthesis, carbon isotope discrimination, epiphytes, hemiepiphytes, and δ13C

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

Clusia is a widely distributed neotropical genus with 321 currently described species. This remarkable genus is the only one known to contain trees sensu stricto with CAM photosynthesis. To survey the occurrence of CAM in Clusia species from Colombia, we determined the leaf stable carbon isotope composition (δ13C) of 568 specimens from 114 species deposited in 12 Colombian herbaria. In the vast majority of specimens, δ13C values indicated that C3 photosynthesis was the principal contributor to carbon gain. δ13C values typical of strong CAM (less negative than -20‰) were observed in only five species, in four of them for the first time. All samples with CAM-type isotopic signatures were collected below 1,000 m a.s.l., whereas species with predominantly C3 occurred from sea level to 3,500 m a.s.l. Together with information already available in the literature, we conclude that CAM is present in 22% (35/156) of the species of Clusia investigated thus far.

Language:

Multiple languages

Rights:

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

Coverage:

304-322

Source:

Photosynthetica | 2022 Volume:60 | Number:2

Harvested from:

CDK

Metadata only:

false