Influence of potassium deficiency on photosynthesis, chlorophyll content, and chloroplast ultrastructure of cotton plants

Title:

Influence of potassium deficiency on photosynthesis, chlorophyll content, and chloroplast ultrastructure of cotton plants

Creator:

Zhao, Duli, Oosterhuis, D. M., and Bednarz, C. W.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e36a2a80-c23b-4f1f-a49d-2baaf6a6c948
uuid:e36a2a80-c23b-4f1f-a49d-2baaf6a6c948
issn:0300-3604
doi:10.1023/A:1012404204910

Subject:

Gossypium hirsutum, intercellular CO2 concentration, net photosynthetic rate, non-structural saccharides, photosynthate translocation, stomata conductance, and transpiration rate

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In cotton (Gossypium hirsutum L.) grown in controlled-environment growth chamber the effects of K deficiency during floral bud development on leaf photosynthesis, contents of chlorophyll (Chl) and nonstructural saccharides, leaf anatomy, chloroplast ultrastructure, and plant dry matter accumulation were studied. After cotton plants received 35-d K-free nutrient solution at the early square stage, net photosynthetic rate (PN) of the uppermost fully expanded main-stem leaves was only 23 % of the control plants receiving a full K supply. Decreased leaf PN of K-deficient cotton was mainly associated with dramatically low Chl content, poor chloroplast ultrastructure, and restricted saccharide translocation, rather than limited stomata conductance in K-deficient leaves. Accumulation of sucrose in leaves of K-deficient plants might be associated with reduced entry of sucrose into the transport pool or decreased phloem loading. K deficiency during squaring also dramatically reduced leaf area and dry matter accumulation, and affected assimilate partitioning among plant tissues. and Duli Zhao, D. M. Oosterhuis, C. W. Bednarz.

Language:

Multiple languages

Rights:

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

Coverage:

103-109

Source:

Photosynthetica | 2001 Volume:39 | Number:1

Harvested from:

CDK

Metadata only:

false