نتایج جستجو برای: photosynthetic apparatus

تعداد نتایج: 70737  

2014
Xingli Fan Zishan Zhang Huiyuan Gao Cheng Yang Meijun Liu Yuting Li Pengmin Li

Submergence is a common type of environmental stress for plants. It hampers survival and decreases crop yield, mainly by inhibiting plant photosynthesis. The inhibition of photosynthesis and photochemical efficiency by submergence is primarily due to leaf senescence and excess excitation energy, caused by signals from hypoxic roots and inhibition of gas exchange, respectively. However, the infl...

Journal: :Plant physiology 2003
EonSeon Jin Kittisak Yokthongwattana Juergen E W Polle Anastasios Melis

The Dunaliella salina photosynthetic apparatus organization and function was investigated in wild type (WT) and a mutant (zea1) lacking all beta,beta-epoxycarotenoids derived from zeaxanthin (Z). The zea1 mutant lacked antheraxanthin, violaxanthin, and neoxanthin from its thylakoid membranes but constitutively accumulated Z instead. It also lacked the so-called xanthophyll cycle, which, upon ir...

Journal: :Molecular biology and evolution 2005
Tuo Shi Thomas S Bibby Lin Jiang Andrew J Irwin Paul G Falkowski

Using a bioinformatic approach, we analyzed the correspondence in genetic distance matrices between all possible pairwise combinations of 82 photosynthetic genes in 10 species of cyanobacteria. Our analysis reveals significant correlations between proteins linked in a conserved gene order and between structurally identified interacting protein scaffolds that coordinate the binding of cofactors ...

Journal: :The Journal of General Physiology 1954
Jerome L. Rosenberg

1. A continuously recording glass electrode apparatus has been described for measuring carbon dioxide concentration changes in solution. The limits of applicability of the apparatus have been analyzed. 2. The glass electrode apparatus has been used for the measurement of transient rates of photosynthesis by algal suspensions. 3. The decline of the photosynthetic rate in high light at carbon dio...

Journal: :Trends in plant science 2003
Thomas Pfannschmidt

The photosynthetic apparatus of higher plants and algae is composed of plastid- and nuclear-encoded components, therefore the expression of photosynthesis genes needs to be highly coordinated. Expression is regulated by various factors, one of the most important of which is light. Photosynthesis functions as a sensor for such light signals, and the redox state of photosynthetic electron transpo...

Journal: :Plant physiology 2001
J D Rochaix

The green unicellular alga Chlamydomonas reinhardtii occupies a unique position among photosynthetic organisms. Although its photosynthetic function is very similar to that of vascular plants, it combines the advantages of unicellular organisms, which include fast growth under controlled environmental conditions with highly sophisticated genetics of the nuclear, chloroplast, and mitochondrial c...

Journal: :Journal of bacteriology 1986
J M Foster T E Redlinger R E Blankenship R C Fuller

Oxygen levels which control induction of the assembly of the pigment-protein photosynthetic polypeptides in dark-grown Chloroflexus aurantiacus were determined. The induction signal by low-oxygen tension is not directly related to the respiratory competence of these photosynthetic cells. Cytochrome c554, the primary electron donor to P865+ of the reaction center, is not present in dark-grown re...

Journal: :The Plant cell 2009
Katharina Bräutigam Lars Dietzel Tatjana Kleine Elke Ströher Dennis Wormuth Karl-Josef Dietz Dörte Radke Markus Wirtz Rüdiger Hell Peter Dörmann Adriano Nunes-Nesi Nicolas Schauer Alisdair R Fernie Sandra N Oliver Peter Geigenberger Dario Leister Thomas Pfannschmidt

Plants possess acclimation responses in which structural reconfigurations adapt the photosynthetic apparatus to fluctuating illumination. Long-term acclimation involves changes in plastid and nuclear gene expression and is controlled by redox signals from photosynthesis. The kinetics of these signals and the adjustments of energetic and metabolic demands to the changes in the photosynthetic app...

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