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A genetic module at one locus in rice protects chloroplasts to enhance thermotolerance
Science, 2022How the plasma membrane senses external heat-stress signals to communicate with chloroplasts to orchestrate thermotolerance remains elusive. We identified a quantitative trait locus, Thermo-tolerance 3 (TT3), consisting of two genes, TT3.1 and TT3.2 ...
Hai Zhang +20 more
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Chloroplast immunophilins [PDF]
Protoplasma, 2015 Immunophilins occur in almost all living organisms. They are ubiquitously expressed proteins including cyclophilins, FK506/rapamycin-binding proteins, and parvulins. Their functional significance in vascular plants is mostly related to plant developmental processes, signalling, and regulation of photosynthesis.
Ana Tomašić Paić, Hrvoje Fulgosi
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Annual Review of Plant Physiology and Plant Molecular Biology, 1999
Photoreduction of dioxygen in photosystem I (PSI) of chloroplasts generates superoxide radicals as the primary product. In intact chloroplasts, the superoxide and the hydrogen peroxide produced via the disproportionation of superoxide are so rapidly ...
K. Asada
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Photoreduction of dioxygen in photosystem I (PSI) of chloroplasts generates superoxide radicals as the primary product. In intact chloroplasts, the superoxide and the hydrogen peroxide produced via the disproportionation of superoxide are so rapidly ...
K. Asada
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Hydrogen Peroxide is Scavenged by Ascorbate-specific Peroxidase in Spinach Chloroplasts
, 1981Intact spinach chloroplasts scavenge hydrogen peroxide with a peroxidase that uses a photoreductant as the electron donor, but the activity of ruptured chloroplasts is very low [Nakano and Asada (1980) Plant & Cell Physiol. 21: 1295].
Y. Nakano, K. Asada
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Current Genetics, 2007
Thioredoxins (TRXs) are small disulfide oxidoreductases of ca. 12 kDa found in all free living organisms. In plants, two chloroplastic TRXs, named TRX f and TRX m, were originally identified as light dependent regulators of several carbon metabolism enzymes including Calvin cycle enzymes.
Stéphane D. Lemaire +5 more
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Thioredoxins (TRXs) are small disulfide oxidoreductases of ca. 12 kDa found in all free living organisms. In plants, two chloroplastic TRXs, named TRX f and TRX m, were originally identified as light dependent regulators of several carbon metabolism enzymes including Calvin cycle enzymes.
Stéphane D. Lemaire +5 more
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2009
Publisher Summary Chloroplasts are organelles specializing in the conversion of radiant energy to chemical energy. The chloroplast is involved in photosynthesis and consequently cells that contain chloroplasts are autotrophic, which means that they are able to make their own food from inorganic molecules by using the radiant energy of sunlight.
Mamoru Sugita, Setsuyuki Aoki
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Publisher Summary Chloroplasts are organelles specializing in the conversion of radiant energy to chemical energy. The chloroplast is involved in photosynthesis and consequently cells that contain chloroplasts are autotrophic, which means that they are able to make their own food from inorganic molecules by using the radiant energy of sunlight.
Mamoru Sugita, Setsuyuki Aoki
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Chloroplast Elongation Factors are Synthesized in the Chloroplast
European Journal of Biochemistry, 1979The elongation factor G (EF‐Gchl) and elongation factor Tu (EF‐Tuchl) present in spinach chloroplasts become labelled when isolated chloroplasts are incubated in the light with radioactive methionine. EF‐Gchl and EF‐Tuchl account for approximately 0.04% and 0.2% respectively of the total radioactivity incorporated by isolated organelles.
Orsola Tiboni +2 more
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Current Opinion in Genetics & Development, 1992
New features of chloroplast gene expression are continually being discovered, particularly in the area of post-transcriptional RNA processing. RNA editing of chloroplast pre-mRNAs occurs in both monocotyledons and dicotyledons, and involves both initiator and internal codons.
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New features of chloroplast gene expression are continually being discovered, particularly in the area of post-transcriptional RNA processing. RNA editing of chloroplast pre-mRNAs occurs in both monocotyledons and dicotyledons, and involves both initiator and internal codons.
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The ultrastructure of chloroplasts
Experimental Cell Research, 19551. 1. On ultrathin sections of chloroplasts from Aspidistra elatior the electron microscopic study has revealed that the grana consist of layered columns. 2. 2. The grana are organized in double membrane discs the two membranes of which are about 65 A thick. These membranes bound a narrow, closed space the height of which also is about 65 A. The
E. Steinmann, F.S. Sjöstrand
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Nature, 1958
IT has been concluded from experiments with barley leaves that chloroplasts contain cytochromes ƒ and b 6 and no cytochrome c 1. We have been able to extend the observations to two other widely differing species and to record certain characteristics of the cytochromes present.
Rachel M. Leech, W. O. James
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IT has been concluded from experiments with barley leaves that chloroplasts contain cytochromes ƒ and b 6 and no cytochrome c 1. We have been able to extend the observations to two other widely differing species and to record certain characteristics of the cytochromes present.
Rachel M. Leech, W. O. James
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