Journal of the Japanese Society for Horticultural Science
Online ISSN : 1880-358X
Print ISSN : 0013-7626
ISSN-L : 0013-7626
Translocation of 14C-L-Proline to Stems and Roots in Citrus Trees (Citrus unshiu Marc.) in Late Fall
Tadashi KATOMakoto YAMAGATASadao TSUKAHARA
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1985 Volume 54 Issue 3 Pages 323-326

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Abstract

Proline was continuously fed in uniformly labelled 14C-form to the leaf of 4-year-old trees for 30hrs in late fall, and the 14C was analyzed in the petiole of 14C-fed leaf, other leaves, stems and roots. In the petiole, the recovered 14C as proline was accounted for 90% of the soluble 14C at the end of feeding. This demonstrates that proline exported from leaves to woody tissues in mostly unmetabolized form. The 14C was translocated partially into other leaves, but more into the stem bark and wood, and further a little into the roots. In the stem and root tissues, a part of the 14C was found in the anionic and neutral components and insoluble components. However, large parts of it remained in proline.

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