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Faster Rubisco is the Key to Superior Nitrogen-Use Eficiency in NADP-Malic Enzyme Relative to NAD-Malic Enzyme C4 Grasses

Ghannoum, Oula; Evans, John; Chow, Wah S (Fred); Andrews, Thomas; Conroy, Jann P; von Caemmerer, Susanne


In 27 C4 grasses grown under adequate or deficient nitrogen (N) supplies, N-use efficiency at the photosynthetic (assimilation rate per unit leaf N) and whole-plant (dry mass per total leaf N) level was greater in NADP-malic enzyme (ME) than NAD-ME species. This was due to lower N content in NADP-ME than NAD-ME leaves because neither assimilation rates nor plant dry mass differed significantly between the two C4 subtypes. Relative to NAD-ME, NADP-ME leaves had greater in vivo (assimilation rate...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Plant Physiology
DOI: 10.1104/pp.104.054759


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