The photosynthetic pathway of the roots of twelve epiphytic orchids with CAM leaves

Title:

The photosynthetic pathway of the roots of twelve epiphytic orchids with CAM leaves

Creator:

Martin, C. E., Mas, E. J., Lu, C., and Ong, B. L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:4d3e3381-2813-4a33-8506-d13985ba1df9
uuid:4d3e3381-2813-4a33-8506-d13985ba1df9
issn:0300-3604
doi:10.1007/s11099-010-0007-6

Subject:

botanika, botany, chlorophyll, CO2 exchange, δ13C/12C, and velamen

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The photosynthetic pathway of the roots (both the white velamentous main portions and the green, nonvelamentous tips) was investigated in twelve taxa (natural species and intergeneric hybrid cultivars) of epiphytic orchids having CAM leaves. All organs contained chlorophyll, and the a/b ratios indicate that the organs, especially the roots, are likely shade-adapted. Stable carbon isotope ratios of the tissues were near -15‰ for all organs, a value typical of obligate (constitutive) CAM plants. Values for root tissues were slightly lower (more negative) than those of the leaves. The presence of CAM in the leaves of these orchids did not ensure that their roots performed CAM photosynthesis. Further work is needed to address the questions raised in this study and to determine if the photosynthetic roots of these taxa are capable of assimilating atmospheric CO2. and C. E. Martin ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

42-50

Source:

Photosynthetica | 2010 Volume:48 | Number:1

Harvested from:

CDK

Metadata only:

false