2013
DOI: 10.1104/pp.113.221119
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Initial Events during the Evolution of C4 Photosynthesis in C3 Species of Flaveria

Abstract: The evolution of C 4 photosynthesis in many taxa involves the establishment of a two-celled photorespiratory CO 2 pump, termed C 2 photosynthesis. How C 3 species evolved C 2 metabolism is critical to understanding the initial phases of C 4 plant evolution. To evaluate early events in C 4 evolution, we compared leaf anatomy, ultrastructure, and gas-exchange responses of closely related C 3 and C 2 species of Flaveria, a model genus for C 4 evolution. We hypothesized that Flaveria pringlei and Flaveria robusta,… Show more

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Cited by 85 publications
(99 citation statements)
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“…Mitochondria still occur between chloroplasts, but to less of a degree than seen in A. rosea . Many of the mitochondria in the hybrids also appear between the inner BS wall and the chloroplasts, resembling a pattern apparent in C 3 -C 4 intermediate plants using the C 2 -type of CCM (Monson and Rawsthorne, 2000; Sage et al , 2011; 2013). These observations further indicate that the BS cells of the F 2 hybrids use the C 2 mode of photosynthesis, although this will depend upon whether enough GDC is present in the BS mitochondria to create a strong sink for glycine produced in the M tissue.…”
Section: Discussionmentioning
confidence: 55%
“…Mitochondria still occur between chloroplasts, but to less of a degree than seen in A. rosea . Many of the mitochondria in the hybrids also appear between the inner BS wall and the chloroplasts, resembling a pattern apparent in C 3 -C 4 intermediate plants using the C 2 -type of CCM (Monson and Rawsthorne, 2000; Sage et al , 2011; 2013). These observations further indicate that the BS cells of the F 2 hybrids use the C 2 mode of photosynthesis, although this will depend upon whether enough GDC is present in the BS mitochondria to create a strong sink for glycine produced in the M tissue.…”
Section: Discussionmentioning
confidence: 55%
“…Significant ( p < 0.05) interaction of C i * with measuring range according to ANOVA analysis is indicated by different letters above each plot. Data was obtained from a variety of reports ( L aisk, ; K irschbaum and Farquhar, ; B rooks and Farquhar, ; J acob and Lawlor, ; B erry et al ., ; V illar et al ., ; von C aemmerer et al ., ; B alaguer et al ., ; Häusler et al ., 1996; B unce, ; E vans and L oreto, ; B ernacchi et al ., ; P eisker and Apel, ; I gamberdiev et al ., ; P ons and Westbeek, ; G uo et al ., ; G almés et al ., ; S chneidereit et al ., ; W arren and Dreyer, ; F lexas et al ., ; K ebeish et al ., ; W eston et al ., ; L i et al ., ; T omaz et al ., ; C ano et al ., ; C ousins et al ., ; T holen and Z hu, ; D outhe et al ., ; G ilbert et al ., ; T holen et al ., ; B usch et al ., ; G iuliani et al ., ; S age et al ., ; W alker et al ., ,; W alker and Cousins, ; W alker et al ., ; W eise et al ., ).…”
Section: Resultsmentioning
confidence: 99%
“…The evolution of C 4 photosynthesis occurred at least 62 times in 19 different families of the angiosperms (Sage et al, 2011), implying a low evolutionary barrier towards expression of this trait. The analysis of recent intermediate species (Bauwe and Kolukisaoglu, 2003; Sage, 2004; Bauwe, 2011; Sage et al, 2012, 2013; Schulze et al, 2013) indicates that establishing a photorespiratory CO 2 pump was an early and important step in the evolution towards C 4 photosynthesis (Figure 1C). Since the two-carbon compound glycine serves as a transport metabolite, this photorespiratory CO 2 concentrating mechanism is also termed C 2 photosynthesis.…”
Section: Introductionmentioning
confidence: 99%