The purpose was to determine the composition of generated chemicals in caryopses formed from photosynthetic products carried from various chlorophyll-containing wheat organs, as well as the contribution of non-leaf organs to total plant photosynthesis. Using 14CO2 tagged carbon, photosynthesis of numerous organs and their contribution to ear caryopsis production were studied during the caryopsis development stage of spring wheat plants (Moskovskaya-35). The presence of 14C in amino acids was found to be more than twice as high in ear photosynthesis. Among the labelled low molecular weight compounds in caryopsis, the highest labelled carbon in the 14CO2 was discovered in the photoassimilates of the flag leaf (70.4%), the ear (55.8%), and the stem under the flag (54.8%) following a brief exposure (2 hours) after photosynthesis (41.5 percent ). Only a brief exposure of the photosynthesizing organ revealed a difference in 14C inclusion in total proteins in the caryopsis (2 hours). The caryopsis synthesised the most water-soluble proteins (flag - 73.9 percent; stem - 46.4 percent; ear - 44.8 percent), while the majority of 14C was derived from non-leaf organ photosynthesis (10.5; 21.5; 28.4 and 4.3; 12.5; 13.4).
Vladimir I. Chikov,
FRC Kazan Scientific Center of RAS, Kazan Institute of Biochemistry and Biophysics, 420088, Kazan, Russia.
Guzel A. Akhtyamova,
FRC Kazan Scientific Center of RAS, Kazan Institute of Biochemistry and Biophysics, 420088, Kazan, Russia.
Please see the link here: https://stm.bookpi.org/ECEES-V3/article/view/6695
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