scholarly journals Complex Transitions between C3 and C4 Photosynthesis during the Evolution of Paniceae: A Phylogenetic Case Study Emphasizing the Position of Steinchisma hians (Poaceae), a C3‐C4 Intermediate

2003 ◽  
Vol 164 (6) ◽  
pp. 949-958 ◽  
Author(s):  
Melvin R. Duvall ◽  
Dayle E. Saar ◽  
W. Scott Grayburn ◽  
Gabriel P. Holbrook
Keyword(s):  
C4 Photosynthesis ◽  
C3 And C4 Photosynthesis

Quantum Yield of Photosystem II and Efficiency of CO2 Fixation in Flaveria (Asteraceae) Species under Varying Light and CO2

1991 ◽  
Vol 18 (4) ◽  
pp. 369 ◽  
Author(s):  
JP Krall ◽  
GE Edwards ◽  
MSB Ku
Keyword(s):  
Quantum Yield ◽  
Photosystem Ii ◽  
Co2 Fixation ◽  
C4 Photosynthesis ◽  
Co2 Assimilation ◽  
Quantum Yields ◽  
Progressive Development ◽  
Psii Activity ◽  
C3 And C4 Photosynthesis

The quantum yields of electron transport from photosystem II (PSII) (Φe, determined from chlorophyll a fluorescence), and CO2 assimilation (ΦCO2, photosynthetic rate/light intensity) were measured simultaneously in vivo with representative species of Flaveria which show a progression in development between C3 and C4 photosynthesis and in reduction of photorespiration. These were F. pringlei (C3), F. sonorensis (C3-C4, but lacking a C4 cycle), F. floridana (C3-C4, with partially functional C4 cycle), F. brownii (C4-like) and F. bidentis (C4). The level of PSII activity with varying CI under 210 mbar O2 was very similar in all species. However, the progressive development of C4 characteristics among the species produced an increased efficiency in utilisation of PSII derived energy for CO2 assimilation under 210 mbar O2, due to reduced photorespiratory losses at low CO2 levels. In all species, when photorespiration was limited by low O2 (20 mbar), there was a linear or near linear relationship between the quantum yield of PSII v. the quantum yield of CO2 fixation with varying intercellular levels of CO2 (Ci) indicating that CO2 fixation in this case is linked to PSII activity. When switching from 20 to 210 mbar O2 at atmosphere levels of CO2, there was a similar decrease in the efficiency in utilising PSII activity for CO2 assimilation at different light intensities, but the degree of sensitivity to O2 progressively decreased among the species concomitant with the development of C4 photosynthesis. These results may help explain why there is an advantage to evolution of C4 photosynthesis in environments where Ci becomes limiting.

scholarly journals Evolutionary Convergence of C4 Photosynthesis: A Case Study in the Nyctaginaceae

2020 ◽  
Vol 11 ◽  
Author(s):  
Roxana Khoshravesh ◽  
Matt Stata ◽  
Shunsuke Adachi ◽  
Tammy L. Sage ◽  
Rowan F. Sage
Keyword(s):  
C4 Photosynthesis ◽  
Evolutionary Convergence

Using Stable Carbon Isotopes to Study C3 and C4 Photosynthesis: Models and Calculations

2018 ◽  
pp. 155-196 ◽  
Author(s):  
Nerea Ubierna ◽  
Meisha-Marika Holloway-Phillips ◽  
Graham D. Farquhar
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
C4 Photosynthesis ◽  
Stable Carbon ◽  
C3 And C4 Photosynthesis

Mehler reaction plays a role in C3 and C4 photosynthesis under shade and low CO2

2021 ◽  
Author(s):  
Julius Ver Sagun ◽  
Murray R. Badger ◽  
Wah Soon Chow ◽  
Oula Ghannoum
Keyword(s):  
C4 Photosynthesis ◽  
Mehler Reaction ◽  
Low Co2 ◽  
C3 And C4 Photosynthesis

Characteristics of oxidative stress of plants with C3 and C4 photosynthesis during salinization

2008 ◽  
Vol 34 (2) ◽  
pp. 77-80 ◽  
Author(s):  
N. G. Gambarova ◽  
M. S. Gins
Keyword(s):  
Oxidative Stress ◽  
C4 Photosynthesis ◽  
C3 And C4 Photosynthesis

Biomass production of two species of Cleome exhibiting C3 and C4 photosynthesis

Biomass ◽  
1982 ◽  
Vol 2 (3) ◽  
pp. 223-227 ◽  
Author(s):  
G. Rajendrudu ◽  
V.S. Rama Das
Keyword(s):  
Biomass Production ◽  
C4 Photosynthesis ◽  
C3 And C4 Photosynthesis
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