The influence of phosphate deficiency on photosynthesis, respiration and adenine nucleotide pool in bean leaves

Title:

The influence of phosphate deficiency on photosynthesis, respiration and adenine nucleotide pool in bean leaves

Creator:

Mikulska, M., Bomsel, J. L., and Rychter, A. M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:3c374924-6e9c-467a-a82e-45baebe6ad96
uuid:3c374924-6e9c-467a-a82e-45baebe6ad96
issn:0300-3604
doi:10.1023/A:1006873932486

Subject:

adenylate, ADP, AMP, ATP, CO2 compensation concentration, dry matter, KCN, Phaseolus vulgaris, plant age, and salicylhydroxamic acid

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The decrease in inorganic phosphate (Pi) content of 10-d-old Phaseolus vulgaris L. plants did not affect rates of photosynthesis (PN) and respiration (RD), leaf growth, and adenylate concentration. Two weeks of phosphate starvation influenced the ATP content and leaf growth more than PN and RD. The ATP concentration in the leaves of 15- and 18-d-old phosphate deficient (-P) plants after a light or dark period was at least half of that in phosphate sufficient (+P, control) plants. Similar differences were found in fresh and dry matter of leaves. However, PN declined to 50 % of control in 18-d-old plants only. Though the RD of -P plants (determined as both CO2 evolution and O2 uptake) did not change, an increased resistance of respiration to KCN and higher inhibition by SHAM (salicylhydroxamic acid) suggested a higher engagement of alternative pathway in respiration and a lower ATP production. The lower demand for ATP connected with inhibition of leaf growth may influence the ATP producing processes and ATP concentration. Thus, the ATP concentration in the leaves depends stronger on Pi content than on PN and RD. and M. Mikulska, J.-L. Bomsel, A. M. Rychter.

Language:

Multiple languages

Rights:

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

Coverage:

79-88

Source:

Photosynthetica | 1998 Volume:35 | Number:1

Harvested from:

CDK

Metadata only:

false