Results 161 to 170 of about 1,713 (200)
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Properties of isolated carrot chromoplasts
Experimental Cell Research, 1954Abstract The carotene content of the chromoplasts of carrots varies from 20 to 56 per cent. The pigment-free portion (“stroma”) contains approximately 58 per cent ether and alcohol soluble matter, 22 per cent proteins and 6 per cent ash. 0.83 per cent lipid-P, corresponding to 21 per cent phospholipids, 0.4 per cent ether soluble Ca and 0.04 per cent
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1995
Publisher Summary Plastids have many differentiation states, including proplastids, chloroplasts, amyloplasts, etioplasts, gerontoplasts, and chromoplasts. These various forms of organelles play very different roles and are mostly interconvertible. An exception is gerontoplasts, the terminal state of chloroplasts in senescent leaves. Chromoplasts are
C.A. Price +3 more
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Publisher Summary Plastids have many differentiation states, including proplastids, chloroplasts, amyloplasts, etioplasts, gerontoplasts, and chromoplasts. These various forms of organelles play very different roles and are mostly interconvertible. An exception is gerontoplasts, the terminal state of chloroplasts in senescent leaves. Chromoplasts are
C.A. Price +3 more
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Chlorophyll synthetase in chlorophyll-free chromoplasts
Plant Cell Reports, 1981A considerable incorporation of [1-(14)C]isopentenyl diphosphate into chlorophyll in chromoplast preparations from daffodil flowers (Narcissus pseudonarcissus L.) was observed when exogenous chlorophyllide a was added. The enzyme chlorophyll synthetase showed properties of a peripheral membrane protein.
K, Kreuz, H, Kleinig
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Chromoplasts--the last stages in plastid development
The International Journal of Developmental Biology, 1991The results of investigations on the development of chromoplast fine structures in various plants are reviewed. Emphasis is placed on the specific pigment-containing structures and their development during chromoplast formation. There is a large variety of these structures, although four fundamental types can be discerned.
N, Ljubesić, M, Wrischer, Z, Devidé
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Isolation and Composition of Chromoplasts from Tomatoes
Journal of Agricultural and Food Chemistry, 2005The fruit of the tomato plant is composed of elongated tomato cells filled with organelles called chromoplasts (plastids). These plastids scattered throughout the cell are rich in nutrients, particularly protein (33%) and lipids (20%). They can be released from the cells by rupture of their cell membranes and then isolated.
Linn U, Hansen, Mei-Chen M, Chiu
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Journal of Agricultural and Food Chemistry, 2006
The properties of plant-derived precipitates of watermelon lycopene were examined in aqueous sodium dodecyl sulfate (SDS) as part of an ongoing effort to develop simpler, more economical ways to quantify carotenoids in melon fruit. Levels of SDS >0.2% were found to increase the water solubility of lycopene in the state in which it was isolated from ...
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The properties of plant-derived precipitates of watermelon lycopene were examined in aqueous sodium dodecyl sulfate (SDS) as part of an ongoing effort to develop simpler, more economical ways to quantify carotenoids in melon fruit. Levels of SDS >0.2% were found to increase the water solubility of lycopene in the state in which it was isolated from ...
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Biochemistry and Molecular Biology of Chromoplast Development
1995Plant cells contain a unique class of organelles, designated the plastids, which distinguish them from animal cells. According to the largely accepted endosymbiotic theory of evolution, plastids are descendants of prokaryotes. This process requires several adaptative changes which involve the maintenance and the expression of part of the plastid genome,
B, Camara +4 more
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Galactolipid synthesis in chromoplasts in vitro
Planta, 1979Isolated chromoplasts from Narcissus pseudonarcissus flowers contain: a fatty acid synthesizing system; acyl-CoA synthetase (EC 6.2.1.3); glycero-phosphate acyltransferase (EC 2.3.1.15); acylglycero-phosphate acyltransferase; phosphatidate phosphatase (EC 3.1.3.4); diacylglycerol galactosyltransferase (EC 2.4.1.46); and diacylgalactosylglycerol ...
B, Liedvogel, H, Kleinig
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The ultrastructure of chromoplast development in red tomatoes
Journal of Ultrastructure Research, 1968Plastid morphogenesis in ripening red tomato fruit tissues has been studied by light and electron microscopy. Color changes of the fruit flesh result from the metamorphosis of chloroplasts 3–6 μ in diameter into chromoplasts 15–48 μ in length and 1–2 μ in diameter, which accumulate lycopene as the major pigment component.
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Leucoplasts Mimicking Membranous Chromoplasts
Zeitschrift für Pflanzenphysiologie, 1980Summary Leucoplasts of coronae of a variety of the daffodil ( Narcissus pseudonarcissus L.) with white flowers (cv. «Mount Hood») exhibit the same fine structural appearance as membranous chromoplasts of the wild type. Their concentric internal membranes are — except for the absence of carotenoids — virtually identical with chromoplast internal ...
Bodo Liedvogel, Heinz Falk
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