Chloroplastic carbon dioxide concentration in Norway spruce (Picea abies [L.] Karst.) needles relates to the position within the crown

Title:

Chloroplastic carbon dioxide concentration in Norway spruce (Picea abies [L.] Karst.) needles relates to the position within the crown

Creator:

Priwitzer, I., Urban, O., Šprtová, M., and Marek, M. V.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:75556d2a-d55c-401e-a0a6-83a8a1f81166
uuid:75556d2a-d55c-401e-a0a6-83a8a1f81166
issn:0300-3604
doi:10.1023/A:1006931024202

Subject:

carboxylation capacity, electron transport rate, net photosynthetic rate, Norway spruce, ribulose-1,5-bisphosphate carboxylase/oxygenase, and sun/shade foliage

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Differences between sun (E) and shaded (S) foliage were studied in a Norway spruce (Picea abies [L.] Karst.) stand. Response curves describing the dependence of the CO2 assimilation rate (PN) on the CO2 concentration at the catalytic site of ribulose-1,5-bisphosphate carboxylase/oxygenase, RuBPCO (PN-Cc) were estimated using the simultaneous measurements of chlorophyll fluorescence and leaf gas exchange. Higher PN, higher electron transport (Ja), higher carboxylation capacity (Vc), and higher RuBPCO activity (τ) for sun acclimated needles was found. The S-needles had higher portion of internal limitation and higher CO2 compensation concentration (Γ) than the E-needles. Because higher degree of limitation of photosynthesis by carboxylation was ascertained, it can be assumed that photosynthesis in shade foliage is limited mainly by lower carboxylation capacity and by low chloroplastic CO2 concentration. and I. Priwitzer ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

561-571

Source:

Photosynthetica | 1998 Volume:35 | Number:4

Harvested from:

CDK

Metadata only:

false