Decline in photosynthesis as related to alterations in chloroplast ultrastructure of a cotton leaf during ontogeny

Title:

Decline in photosynthesis as related to alterations in chloroplast ultrastructure of a cotton leaf during ontogeny

Creator:

Bondada, Bhaskar Rao and Oosterhuis, D. M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:12d100f4-13e2-4ac4-94be-bc8357d12732
uuid:12d100f4-13e2-4ac4-94be-bc8357d12732
issn:0300-3604
doi:10.1023/A:1006980806057

Subject:

Gossypium hirsutum, grana, plastoglobuli, and stroma lamellae

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Field studies were conducted to investigate ontogenic changes in leaf photosynthesis and chloroplast ultrastructure of a single cotton (Gossypium hirsutum L.) leaf subtending the fruit. A 20-d old leaf was the most physiologically active with net photosynthetic rate (PN) of 16.5 μmol m-2 s-1 and nitrogen (N) concentration of 168 mmol m-2. These values declined with leaf age and a close relationship existed between them. Concurrent with declines in PN, ultrastructural alterations occurred in the chloroplast: the 20-d old leaf had increased grana number and thylakoids per granum and a few plastoglobuli. Afterwards, the grana number and thylakoids per granum declined with leaf age indicating disintegrated grana and stroma lamellae. Concomitant with disintegrated membrane system was the presence of numerous large plastoglobuli. The PN was closely related to grana number and thylakoids per granum suggesting that the decline in PN with leaf age was associated with ultrastructural changes in the chloroplast. and Bhaskar Rao Bondada, D. M. Oosterhuis.

Language:

Multiple languages

Rights:

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

Coverage:

467-471

Source:

Photosynthetica | 1998 Volume:35 | Number:3

Harvested from:

CDK

Metadata only:

false