Details

Autor(en) / Beteiligte

• Jack C. Shannon

Titel

Carbon-14 Distribution in Carbohydrates of Immature Zea mays. Kernels following 14CO2 Treatment of Intact Plants

Ist Teil von

• Plant physiology (Bethesda), 1968-08, Vol.43 (8), p.1215-1220

Ort / Verlag

American Society of Plant Physiologists

Erscheinungsjahr

1968

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Shortly after Zea mays L. plants were exposed to 14CO2, most of the radioactivity in the kernel occurred in the free monosaccharides, glucose and fructose. Later the proportion of 14C in sucrose increased and that in the monosaccharides declined. These data have been interpreted as showing that the translocated sugar is hydrolyzed prior to or during its movement into the storage cells of the endosperm. This hydrolysis appears to occur in the "pedicel region" of the kernel. After entry into the endosperm tissue, sucrose was rapidly resynthesized from the monosaccharides prior to its utilization in starch synthesis.