chloroplast


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chloroplast

 [klor´o-plast]
the photosynthetic unit of a plant cell, containing all the chlorophyll.

chlor·o·plast

(klōr'ō-plast),
A plant cell inclusion body containing chlorophyll; occurs in cells of leaves and young stems. Site of photosynthesis in higher plants.
[chloro- + G. plastos, formed]

chloroplast

/chlo·ro·plast/ (-plast) any of the chlorophyll-bearing bodies of plant cells.
Chloroplastclick for a larger image
Fig. 101 Chloroplast . (a) Thin section through a whole chloroplast. (b) Thylakoid arrangement. (c) An enlarged section of a granum.

chloroplast

a type of PLASTID containing CHLOROPHYLL found within the cells of plant leaves and stems. The chlorophyll is packed within granules called quantasomes which are located in the walls of flattened sacs called LAMELLAE or thylakoids. The lamellae lie closely together in certain areas to form grana and are more separate in the intergranal regions. LIGHT REACTIONS of photosynthesis are thought to take place in the quantasomes while DARK REACTIONS occur in the watery matrix surrounding the lamellae, the stroma.
References in periodicals archive ?
Chloroplast DNA could quickly tell breeders whether crosses produced the desired hybrid.
There is more than 90% of superoxide dismutase in chloroplasts which about 4 to 5 percent of it is in mitochondria [1,2,3].
Molecular phylogenetic analysis using chloroplast DNA confirms monophyly of the genus after the Mexican A.
There are important factors related to photosynthetic efficiency in plants, such as the concentration and composition of chloroplast pigments that affect plant growth and their adaptability to environments with different luminosities (DAI et al.
x mildei, based on inferences from chloroplast DNA sequence data.
has signed a joint development and supply agreement with Sigma-Aldrich Fine Chemicals, a division of Sigma-Aldrich Corporation , which is expected to produce the first commercial products from chloroplast transformation technology (CTT).
Phylogeny and morphological evolution of Marcgraviaceae: insights from three chloroplast genes.
Date of the monocot-dicot divergence estimated from chloroplast DNA sequence data.
Expression of Bacillus anthracis protective antigen in transgenic chloroplasts of tobacco, a non-food/feed crop.
An initial effort at establishing a molecular-based phylogeny of the group examined the 1101-base pair trnL-trnF region of chloroplast DNA, a highly variable region in other genera of legumes.
The antimutagenic effect of these substances was estimated against acridine orange (AO)- and ofloxacin-induced damage of chloroplast DNA in Euglena gracilis assay.
Elkin received her PhD from the University of California, Berkeley in 1973 for her studies on chloroplast fluorescence.