Differential accumulation of plastid transcripts encoding photosystem II components in the mesophyll and bundle-sheath cells of monocotyledonous NADP-malic enzyme-type C4 plants

Planta ◽  
1991 ◽  
Vol 184 (3) ◽  
Author(s):  
Peter Westhoff ◽  
Karin Offermann-Steinhard ◽  
Michael H�fer ◽  
Kenneth Eskins ◽  
Angela Oswald ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Malic Enzyme ◽  
Bundle Sheath ◽  
C4 Plants ◽  
Bundle Sheath Cells ◽  
Sheath Cells

Differential biogenesis of photosystem-II in mesophyll and bundle-sheath cells of 'malic' enzyme NADP+-type C4 plants. A comparative protein and RNA analysis

1990 ◽  
Vol 190 (1) ◽  
pp. 185-194 ◽  
Author(s):  
Angela OSWALD ◽  
Monika STREUBEL ◽  
Ulf LJUNGBERG ◽  
Jurgen HERMANS ◽  
K. ESKINS ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Malic Enzyme ◽  
Bundle Sheath ◽  
C4 Plants ◽  
Rna Analysis ◽  
Bundle Sheath Cells ◽  
Sheath Cells

C4 acid decarboxylation and photosynthesis in bundle sheath cells of NAD-malic enzyme-type C4 plants: Mechanism and the role of malate and orthophosphate

1990 ◽  
Vol 276 (2) ◽  
pp. 374-381 ◽  
Author(s):  
Robert T. Furbank ◽  
Antony Agostino ◽  
Marshall D. Hatch
Keyword(s):  
Malic Enzyme ◽  
Bundle Sheath ◽  
C4 Plants ◽  
Bundle Sheath Cells ◽  
Sheath Cells

scholarly journals Reactive oxygen species and redox regulation in mesophyll and bundle sheath cells of C4 plants

2018 ◽  
Vol 69 (14) ◽  
pp. 3321-3331 ◽  
Author(s):  
Ismail Turkan ◽  
Baris Uzilday ◽  
Karl-Josef Dietz ◽  
Andrea Bräutigam ◽  
Rengin Ozgur
Keyword(s):  
Reactive Oxygen Species ◽  
Redox Regulation ◽  
Reactive Oxygen ◽  
Bundle Sheath ◽  
C4 Plants ◽  
Oxygen Species ◽  
Bundle Sheath Cells ◽  
Sheath Cells

Photosynthesis in Gomphrena celosioides and Its Classification Amongst C4-pathway Plants

1976 ◽  
Vol 3 (6) ◽  
pp. 863 ◽  
Author(s):  
E Repo ◽  
MD Hatch
Keyword(s):  
Malate Dehydrogenase ◽  
Malic Enzyme ◽  
Bundle Sheath ◽  
Mesophyll Cells ◽  
C4 Species ◽  
Bundle Sheath Cells ◽  
Major Route ◽  
Gomphrena Celosioides ◽  
A Minor ◽  
Sheath Cells

Monocotyledonous C4 species classified as NADP-ME-type transfer malate from mesophyll to bundle sheath cells where this acid is decarboxylated via NADP malic enzyme (EC 1.1.1.40) to yield pyruvate and CO2. The dicotyledon G. celosioides is most appropriately classified in thls group on the basis of high leaf activities of NADP malic enzyme and NADP malate dehydrogenase (EC 1.1.1.82). However, this species contains high aspartate aminotransferase (EC 2.6.1.1) and alanine aminotransferase (EC 2.6.1.2) activities and centripetally located bundle sheath chloroplasts, features more typical of other groups of C4 species that cycle aspartate and alanine between mesophyll and bundle sheath cells. During the present study, we found that these aminotransferases and NADP malate dehydrogenase were predominantly located in mesophyll cells, that malate was the major C4 acid labelled when leaves were exposed to 14CO2, and that label was initially lost most rapidly from the C-4 of malate during a chase in 12CO2. These results are consistent with the major route of photosynthetic metabolism being the same as that operative in other NADP-ME-type species, although this may be supplemented by a minor route utilizing aspartate. In contrast to monocotyledonous NADP-ME-type C4 species, isolated bundle sheath cells from G. celosioides were capable of rapid photoreduction of NADP as judged by products formed during assimilation of 14CO2 and their capacity for light-dependent oxygen evolution. This was related to a relatively high frequency of single unstacked granum in the chloroplasts of these cells.

scholarly journals Metabolite Diffusion into Bundle Sheath Cells from C4 Plants

1988 ◽  
Vol 88 (3) ◽  
pp. 815-822 ◽  
Author(s):  
Hendrik Weiner ◽  
James N. Burnell ◽  
Ian E. Woodrow ◽  
Hans W. Heldt ◽  
Marshall D. Hatch
Keyword(s):  
Bundle Sheath ◽  
C4 Plants ◽  
Bundle Sheath Cells ◽  
Sheath Cells

scholarly journals Improving Light Use Efficiency in C4 Plants by Increasing Electron Transport Rate

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 203
Author(s):  
Maria Ermakova ◽  
Robert T. Furbank ◽  
Susanne von Caemmerer
Keyword(s):  
Electron Transport ◽  
Conversion Efficiency ◽  
C4 Photosynthesis ◽  
Foxtail Millet ◽  
Bundle Sheath ◽  
C4 Plants ◽  
Crop Species ◽  
Bundle Sheath Cells ◽  
Light Conversion Efficiency ◽  
Sheath Cells

C4 plants play a key role in world agriculture and strategies to manipulate and enhance C4 photosynthesis have the potential for major agricultural impacts. The C4 photosynthetic pathway is a biochemical CO2 concentrating mechanism that requires the coordinated functioning of mesophyll and bundle sheath cells of leaves. Chloroplast electron transport in C4 plants is shared between the two cell types; it provides resources for CO2 fixation therefore underpinning the efficiency of photosynthesis. Using the model monocot C4 species Setaria viridis (green foxtail millet) we demonstrated that the Cytochrome (Cyt) b6f complex regulates the electron transport capacity and thus the rate of CO2 assimilation at high light and saturating CO2. Overexpression of the Cyt b6f in both mesophyll and bundle sheath cells results in a higher electron throughput and allows better light conversion efficiency in both photosystems. Importantly, increased Cyt b6f abundance in leaves provides higher rates of C4 photosynthesis without marked changes in Rubisco or chlorophyll content. Our results demonstrate that increasing the rate of electron transport is a viable strategy for improving the light conversion efficiency in C4 crop species like maize and sorghum.

In Situ Localization of Nadp-Malic Enzyme in Bundle Sheath Cells and Leaf Carbon Isotope Fractionation in Two C4Grasses

1996 ◽  
Vol 157 (1) ◽  
pp. 118-122 ◽  
Author(s):  
S. Madhavan ◽  
Carlos S. Andreo ◽  
Veronica G. Maurino ◽  
Marion H. O'Leary
Keyword(s):  
Carbon Isotope ◽  
Malic Enzyme ◽  
Isotope Fractionation ◽  
Bundle Sheath ◽  
Carbon Isotope Fractionation ◽  
Bundle Sheath Cells ◽  
Sheath Cells
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