Effect of triacontanol in flooded Erythrina variegata seedlings. 2. Changes in 14CO2 fixation, and ribulose-1,5-bisphosphate carboxylase, photosystem and nitrate reductase activities

Title:

Effect of triacontanol in flooded Erythrina variegata seedlings. 2. Changes in 14CO2 fixation, and ribulose-1,5-bisphosphate carboxylase, photosystem and nitrate reductase activities

Creator:

Muthuchelian, K., Murugan, C., Harigovindan, R., Nedunchezhian, N., and Kulandaivelu, G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6df6ff8d-5a44-4ed2-b20e-05f0d829d1cf
uuid:6df6ff8d-5a44-4ed2-b20e-05f0d829d1cf
urnnbn:urn:nbn:cz:aba007-000flf

Type:

model:internalpart and TEXT

Format:

print

Description:

The effect of spraying triacontanol (Tria) solution (1 g m'^) on •'*C02 fíxation, ribulose-l,5-bisphosphate carboxylase (RuBPC), nitráte reductase (NR) and photosystem (PS) activities in waterlogged Erythrina variegata Lam. was investigated under field conditions. Seedlings exposed to flooding for 10 d showed a significant reduction in •‘♦CO2 fíxation, and in NR, RuBPC and PS2 activities. Electrophoretic analysis of thylakoid polypeptides indicated a significant loss of 47, 43, 33, 25, 23, 17 and 15 kDa polypeptides in flooded seedlings. However, the application of Tria partially ameliorated the effect of flooding and promoted the above activities. The site of flooding injury was at the oxidation site of PS2 prior to the hydroxylamine donating site and perhaps close or after the diphenylcarbazide donating site. The increase in the RuBPC activity in Tria-treated seedlings under flooding correlated well with the changes in CO2 fíxation rate.

Language:

Multiple languages

Rights:

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

Coverage:

407-413 and 89-95

Source:

Photosynthetica | 1994 Volume:30 | Number:3

Harvested from:

CDK

Metadata only:

false