Assimilation and distribution of 14C photosynthate in oilseed rape (Brassica Napus L.)

Mixotrophic orchids do not use photosynthates for perennial underground organs

“…This distribution is partly unexpected: on the one hand, labelled photosynthates, especially those from upper leaves, usually migrate to fruits (e.g. Major et al ., ; Addo‐Quaye et al ., ) and the persistent labelling of fruits and seeds confirms that the same happens in C. damasonium . On the other hand, photosynthates, especially those from the lower leaves, also usually migrate to belowground organs (Harris & Jeffcoat, ; Major et al ., ), especially in perennial species (e.g.…”

Development and validation of a dynamical atmosphere–vegetation–soil HTO transport and OBT formation model

“…In addition, for the discrepancy (3), difference in photosynthetic activity across height resulting from aging of leaves is attributable. Leaves in basal canopy are older, and hence their photosynthetic activity is smaller than the upper young leaves (Addo-Quaye et al, 1986;Collins and Scarisbrick, 1994;Taiz and Zeiger, 2002), a process which is not included in our model. This can have resulted in an overestimation of the OBT production during the exposure for the leaves in lower canopy.…”

¹⁴CO₂ Assimilation and ¹⁴C-photosynthate Translocation in Different Leaves of Sunflower

“…Carbon partitioning in plants is controlled by the supply of photosynthates, the number and size of competing sinks, their location on the plant, vascular connection, and potential for temporary storage in the leaves (Wardlaw 1990). Exposure to 14 CO 2 has often been used to investigate the photosynthetic efficiency and subsequent movement of photosynthates in different crop plants (Ado-Quaye et al 1986, Goffner et al 1988, Subrahmanyam and Rathore 1992). 14 CO 2 exposure technique was also used to investigate the contribution of different photosynthetically active plant parts to the total C acquisition by the plants (Major et al 1978, Chapman et al 1984, Subrahmanyam and Rathore 1992.…”