EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Differences in chloroplast ultrastructure of Phaeocystis antarctica in low and high light



Differences in chloroplast ultrastructure of Phaeocystis antarctica in low and high light



ine Biology Berlin ember; 149(6): 1281-1290



Phaeocystis antarctica Karsten exhibits optical changes in pigment packaging during acclimation to drastically different light levels. Here, the three-dimensional morphological rearrangements are shown for two light conditions mimicking limiting and saturating conditions for photosynthesis. Cultures of P. antarctica were grown semi-continuously under light-limiting conditions for growth (14 [mu]mol quanta m-2 s-1) and a light-saturating condition (259 [mu]mol quanta m-2 s-1) for growth. Increased numbers of thylakoids were observed under the low light treatment. In contrast, there were less amounts of thylakoid stacking in each chloroplast under the high light treatment. Electron microscopic tomographic reconstructions illustrate the complexity of the chloroplast organelle where the thylakoids 'interact' with the pyrenoid and the chloroplast membrane. Highly complex characteristics, such as bi- and tri-furcations in the thylakoid stacks, were continuous throughout the chloroplast. Other organelles, such as the Golgi apparatus and dense vesicles that may potentially affect cellular scattering and absorption were also observed in both high and low light. These three dimensional thylakoid arrangements have profound implications for cellular photophysiology. They represent a new view of algal chloroplast structure, and provide a starting point for more accurate optical modeling studies.

(PDF emailed within 0-6 h: $19.90)

Accession: 011954002

Download citation: RISBibTeXText

DOI: 10.1007/s00227-006-0321-5



Related references

Chloroplast ultrastructure of the alga Phaeocystis antarctica Karsten A new structural model using electron tomography. Photosynthesis Research 69(1-3): 40, 2001

Adaptation of chloroplast ultrastructure and of chlorophyll protein levels to high light and low light growth conditions. Zeitschrift fuer Naturforschung Section C Journal of Biosciences 37(5-6): 464-475, 1982

Photosynthetic activity, chloroplast ultrastructure, and leaf characteristics of high-light and low-light plants and of sun and shade leaves. Photosynthesis Research 2(2): 115-141, 1981

Current knowledge of the life cycles of phaeocystis globosa and phaeocystis antarctica prymnesiophyceae. Journal of Phycology 48(3): 0-0, 2012

Adaptation of chloroplast-ultrastructure and of chlorophyll-protein levels to high-light and low-light growth conditions Radish seedlings, Raphanus sativus. Zeitschrift fur Naturforschung Section C Biosciences 37(5-6): 464-475, 1982

Adaptation to fluctuating light and iron limitation by Phaeocystis antarctica. Photosynthesis Research 69(1-3): 33-34, 2001

Photophysiological acclimation of Phaeocystis antarctica Karsten under light limitation. Limnology and Oceanography 44(2): 7-58, 1999

Photosynthetic responses in Phaeocystis antarctica towards varying light and iron conditions. Biogeochemistry 83(1-3): 61-70, 2007

The pigment composition of Phaeocystis antarctica (Haptophyceae) under various conditions of light, temperature, salinity, and iron. Journal of Phycology 50(6): 1070-1080, 2014

The influence of light and temperature on carbon-specific DMS release by cultures of Phaeocystis antarctica and three antarctic diatoms. Marine Chemistry 45(1-2): 129-136, 1994

Changes in chloroplast ultrastructure and thylakoid membrane proteins by high light in ginseng leaves. Journal of Plant Biology 37(3): 285-292, 1994

Plants under Climatic Stress: II. Low Temperature, High Light Effects on Chloroplast Ultrastructure. Plant Physiology 47(5): 719-725, 1971

Photosynthetic characteristics and chloroplast ultrastructure of C3 and C 4 tree species grown in high- and low-light environments. Photosynthesis Research 9(3): 317-331, 1986