1978
DOI: 10.2135/cropsci1978.0011183x001800010025x
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Abstract: Plant species that fix CO2 by the C4 cycle have higher rates of CO2 uptake than species using the C3 photosynthetic carbon reduction cycle. Greater CO2 fixation capacity has been associated with reduced photorespiration, specialized leaf anatomy, and biochemical pathways that differ in C3 and C4 plants. The higher photosynthesis rate of C4 species also results in more dry matter production per unit of water transpired. This paper reviews published reports of productivity and N content of some C4 and C3 species… Show more

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Cited by 349 publications
(174 citation statements)
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“…This is consistent with, and may contribute to, the reported differences in N-use efficiency between C3 and C4 species (6). It is interesting to attempt to assess the relative impact on photosynthetic performance of a C3 species if it were to utilize equal amounts of either a C3-type RuBPCase or a C4-type RuBPCase.…”
Section: Resultssupporting
confidence: 71%
“…This is consistent with, and may contribute to, the reported differences in N-use efficiency between C3 and C4 species (6). It is interesting to attempt to assess the relative impact on photosynthetic performance of a C3 species if it were to utilize equal amounts of either a C3-type RuBPCase or a C4-type RuBPCase.…”
Section: Resultssupporting
confidence: 71%
“…The greater PNUE of C4 plants has led to suggestions that these plants should have a greater ability to persist on low N sites than C3 plants (3). In this study, we found that the largest advantage in terms of growth and apparent competitive ability of the C4 species, A. retroflexus, over the C3 species, C. album, was at high N. At low N, C. album held the advantage in terms of growth and apparent competitive ability.…”
Section: Discussionmentioning
confidence: 45%
“…Photosynthetic rate per unit leaf nitrogen, which has been termed photosynthetic nitrogen use efficiency (PNUE2), has been shown to be greater in C4 plants than C3 plants (3,4,18,24,26,28). However, the effect of PNUE on the growth and reproductive yield of C4 relative to C3 plants is unclear.…”
mentioning
confidence: 99%
“…This is consistent with previous observations that the C4 species use nitrogen more efficiently than Figure 3 . Carbon isotope measurements were made concurrently with gas exchange and conditions were as described in Figure the C, species, since Rubisco can operate near its maximal activity (Brown, 1978;Usuda, 1984;Sage et al, 1987).…”
Section: Discussion Antisense Effect On Leaf Biochemistry and Photosymentioning
confidence: 99%