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Why are non-photosynthetic tissues generally 13 C enriched compared with leaves in C 3 plants? Review and synthesis of current hypotheses

Cernusak, Lucas; Tcherkez, Guillaume; Keitel, Claudia; Cornwell, William K; Santiago, Louis S; Knohl, Alexander; Barbour, Margaret M; Williams, David G; Reich, Peter B; Ellsworth, David S; Dawson, Todd; Griffiths, Howard; Wright, Ian J; Farquhar, Graham

Description

Non-photosynthetic, or heterotrophic, tissues in C3 plants tend to be enriched in 13C compared with the leaves that supply them with photosynthate. This isotopic pattern has been observed for woody stems, roots, seeds and fruits, emerging leaves, and parasitic plants incapable of net CO 2 fixation. Unlike in C3 plants, roots of herbaceous C4 plants are generally not 13C-enriched compared with leaves. We review six hypotheses aimed at explaining this isotopic pattern in C3 plants: (1) variation...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/61921
Source: Functional Plant Biology
DOI: 10.1071/FP08216

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