Changes in the contents of the photosynthetic electron carriers, RNAse activity and membrane permeability, triggered by excess copper in rice

Title:

Changes in the contents of the photosynthetic electron carriers, RNAse activity and membrane permeability, triggered by excess copper in rice

Creator:

Lidon, F. C. and Henriques, F. S.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:df035ff7-f73d-4eca-a5f0-787d1142ee72
uuid:df035ff7-f73d-4eca-a5f0-787d1142ee72
urnnbn:urn:nbn:cz:aba007-000fd7

Type:

model:internalpart and TEXT

Format:

print

Description:

Rice (Oryza sativa L.) plants were grown in nutríent solutíon containing concentrations of Cu vaiying from deficiency to toxicity [0.002-6.25 g(Cu) m"^]. Shoot contents of Cu, Mn and Fe were measured as well as the concentrations of plastocyanin (PC), plastoquinone (PQ) and cytochromes (cyt) f, 6553, 6-559up, and b- 559hp. While Cu concentration increased wilh increasing levels of metal in the solutíon, Mn and Fe concentrations progressively decreased after Cu treatments higher than 0.05 g m‘3. On a chlorophyll basis, the contents of PC and cyt/decreased after the 0.01 g(Cu) m'^ Cu treatonent, while the contents of cyt f>-559Lp and b- 559hp did not show any apparent conelatíon, and the PQ concentration sharply increased with increasing Cu toxicity. Membrane permeability and acid RNAse activity were enhanced with increasing Cu concentration.

Language:

Multiple languages

Rights:

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

Coverage:

99-108 and 117-126

Source:

Photosynthetica | 1993 Volume:28 | Number:1

Harvested from:

CDK

Metadata only:

false