Changes in CO2 exchange rate, stomatal conductance, activities of photosystems 1 and 2, and chloroplast polypeptide profile induced by simulated acidic rain

Title:

Changes in CO2 exchange rate, stomatal conductance, activities of photosystems 1 and 2, and chloroplast polypeptide profile induced by simulated acidic rain

Creator:

Kumaravelu, G. and Ramanujam, M. P.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:1d1a3ae6-f46b-4dc0-9313-849aeea54939
uuid:1d1a3ae6-f46b-4dc0-9313-849aeea54939
issn:0300-3604
doi:10.1023/A:1006956100605

Subject:

absorption spectra, chlorophyll fluorescence, photosynthesis, and Vigna radiata

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In seedlings of Vigna radiata (L.) R. Wilczek cultivars ADT-1 and CO-5 exposed to acidic showers (H2SO4 : HNO3 : HCl, 4 : 2 : 1, v/v) of different pH (7.0, 5.5, 4.0, and 2.5) for 10 d, net CO2 uptake and stomatal conductance were reduced. The chlorophyll (Chl) a and b contents were reduced but the carotenoid (Car) content increased. In vivo Chl a fluorescence patterns of both the cultivars were altered. No significant change in photosystem (PS) 1 activity was observed except at pH 2.5 where an inhibition was evident. By contrast, PS2 activities declined rapidly with increasing acidity. The room temperature absorption spectra of isolated chloroplasts showed very little changes. SDS-PAGE analysis revealed depletion of 23, 33, and 55 kDa polypeptides. Cultivar CO-5 was more sensitive to acidic rain than cv. ADT-1. and G. Kumaravelu, M. P. Ramanujam.

Language:

Multiple languages

Rights:

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

Coverage:

353-359

Source:

Photosynthetica | 1998 Volume:35 | Number:3

Harvested from:

CDK

Metadata only:

false