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Phenolic Deposits and Kranz Syndrome in Leaf Tissues of Spotted (Euphorbia maculata) and Prostrate (Euphorbia supina) Spurge

Published online by Cambridge University Press:  12 June 2017

C. Dennis Elmore  and
Rex N. Paul
C. Dennis Elmore
Affiliation:
South. Weed Sci. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
Rex N. Paul
Affiliation:
South. Weed Sci. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
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Abstract

Spotted spurge (Euphorbia maculata L.) and prostrate spurge (E. supina Raf.), both in subgenus Chamesyce, were examined by light and electron microscopy using a caffeine - fixation technique to sequester the phenolic pools intercellularly. Both species have typical dicotyledon-type Kranz anatomy. Sequestered phenolic pools were located in vacuoles in epidermal and mesophyll cells. Only in spotted spurge, however, were additional phenolic pools formed in bundle - sheath cells. This study was undertaken because allelopathy has been demonstrated in prostrate spurge and because phenolic compounds have been implicated in allelopathy. These results would indicate that spotted spurge should also be allelopathic.

Keywords

Euphorbia nutansChamaesyceallelopathyKranz -C4 photosynthesis
Type
Research Article
Information
Weed Science , Volume 31 , Issue 1 , January 1983 , pp. 131 - 136
Copyright
Copyright © 1983 Weed Science Society of America 

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