Photosynthesis of cockspur [Echinochloa crus-galli (L.) Beauv.] at sites of naturally elevated CO2 concentration

Title:

Photosynthesis of cockspur [Echinochloa crus-galli (L.) Beauv.] at sites of naturally elevated CO2 concentration

Creator:

Vodnik, D., Pfanz, H., Maček, I., Kastelec, D., Lojen, S., and Batič, F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e9e43602-578a-4686-a767-55554df12926
uuid:e9e43602-578a-4686-a767-55554df12926
issn:0300-3604
doi:10.1023/A:1024308204086

Subject:

carbon dioxide springs, chlorophyll, CO2 compensation concentration, intercellular CO2 concentration, net photosynthetic rate, plant height, stomatal conductance, and δ13C

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

High abundance of cockspur (Echinochloa crus-galli) at the geothermal carbon dioxide spring area in Stavešinci indicates that this species is able to grow under widely varying CO2 concentrations. Living cockspur plants can even be found very close to gas-releasing vents where growth is significantly reduced. Plant height correlated well with CO2 exposure. The δ13C value of the CO2 spring air was -3.9 ‰ and δ13C values of high-, medium-, and low-CO2 plants were -10.14, -10.44, and -11.95 ‰, respectively. Stomatal response directly followed the prevailing CO2 concentrations, with the highest reduction of stomatal conductance in high CO2 concentration grown plants. Analysis of the curves relating net photosynthetic rate to intercellular CO2 concentration (PN-Ci curves) revealed higher CO2 compensation concentration in plants growing at higher CO2 concentration. This indicates adjustment of respiration and photosynthetic carbon assimilation according to the prevailing CO2 concentrations during germination and growth. There was no difference in other photosynthetic parameters measured. and D. Vodnik ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

575-579

Source:

Photosynthetica | 2002 Volume:40 | Number:4

Harvested from:

CDK

Metadata only:

false