Photosynthetic activities, C3 and C4 indicative enzymes and the role of photoperiod in dormancy induction in ‘Chunjie’ peach

Title:

Photosynthetic activities, C3 and C4 indicative enzymes and the role of photoperiod in dormancy induction in ‘Chunjie’ peach

Creator:

Zhang, H.-S., Li, D.-M., Tan, Q.-P., Gao, H.-Y., and Gao, D.-S

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:ec4a1892-dd43-47db-a7cb-c99c57d919c0
uuid:ec4a1892-dd43-47db-a7cb-c99c57d919c0
issn:0300-3604
doi:10.1007/s11099-015-0104-7

Subject:

fotosyntéza, photosynthesis, Shan-tung (Čína : provincie), gas exchange, MALDI-TOF, nonstomatal limitation, Rubisco large subunit, two-dimensional electrophoresis, Prunus persica L. cv. Chunjie, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Our study examined the relationship between photosynthetic performance and activities of key photosynthetic enzymes to understand the photosynthetic variation and reasons for the variation during dormancy induction under different photoperiods in peach (Prunus persica L. cv. Chunjie). Furthermore, the study explained the changes in the key enzymes from the viewpoint of differential proteomics. The results showed that the leaf net photosynthetic rate (PN) and stomatal conductance tended to decrease, while the intercellular CO2 concentration rose, which indicated that the reduced PN resulted from nonstomatal limitation. During the dormancy induction period, the activities of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and phosphoenolpyruvate carboxylase (PEPC) declined, which was the main reason for the reduced PN. Two-dimensional electrophoresis maps and differential protein identification demonstrated that the decrease in activity of the photosynthetic enzymes was mainly due to enzymatic degradation. The enzyme degradation by a long-day treatment occurred later and to a lesser degree than that of the short-day treatment. In the long-day treatment, the carboxylation activity of Rubisco was higher than that of the control treatment, and the PEPC activity and the ratio of the PEPC/Rubisco activity were lower than the corresponding activities during the control treatment. These differences under long-day conditions were significant but did not occur in the short-day treatment, suggesting that the C4 pathway might be more active under short-day conditions., H.-S. Zhang, D.-M. Li, Q.-P. Tan, H.-Y. Gao, D.-S. Gao., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

269-278

Source:

Photosynthetica | 2015 Volume:53 | Number:2

Harvested from:

CDK

Metadata only:

false