STABILITY OF CHLOROPHYLL, CAROTENOIDS AND PROTEIN OF THYLAKOID MEMBRANES DURING IN-VITRO AGING OF CHLOROPLASTS

Authors
CHOUDHURY NK SWAIN NK RAVAL MK BISWAL UC
Citation
Nk. Choudhury et al., STABILITY OF CHLOROPHYLL, CAROTENOIDS AND PROTEIN OF THYLAKOID MEMBRANES DURING IN-VITRO AGING OF CHLOROPLASTS, Photosynthetica, 29(4), 1993, pp. 631-634
Citations number
15
Categorie Soggetti
Plant Sciences
Journal title
Photosynthetica → ACNP
ISSN journal
03003604
Volume
29
Issue
4
Year of publication
1993
Pages
631 - 634
Database
ISI
SICI code
0300-3604(1993)29:4<631:SOCCAP>2.0.ZU;2-J
Abstract
Aging induced loss of chlorophyll (Chl), carotenoids (Car) and protein s was studied in suspensions of isolated wheat chloroplasts incubated in the light or dark. Faster rate of pigment loss in the light was due to photodestruction of pigments. Compared to Chl, a greater loss of C ar in the light was due to photoprotective action of Car towards Chl r esulting in its own destruction. The total protein content was lowered more in the light than in dark. Soluble proteins of chloroplasts decl ined by 36 %, whereas membrane proteins showed a loss of only 8 % afte r 6 d of light incubation.