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Translocation of lysine from the host Melicope simplex to the parasitic dwarf mistletoe Korthalsella lindsayi (Viscaceae)
Author(s) -
COETZEE J.,
FINERAN B. A.
Publication year - 1989
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1989.tb00326.x
Subject(s) - haustorium , biology , host (biology) , parasite hosting , phloem , xylem , botany , parenchyma , cytoplasm , microbiology and biotechnology , ecology , world wide web , computer science
SUMMARY 3 H‐lysine was administered to severed ends of host stems infected by the parasitic mistletoe Korthalsella lindsayi (D. Oliver) Engl. Autoradiography at the ultrastructural level revealed that the tracer is transported from host to parasite and that it accumulates in lipid bodies in the haustorial parenchyma. At the host/parasite interface phloem is generally absent and the number of direct xylem tracheary to tracheary contacts are limited. In the interface area no cytoplasmic continuity could be observed between host and parasite, but numerous plasmatubules were present. It is concluded that organic substances such as the amino acid lysine can be translocated apoplastically from the host to the parasite and that plasmatubules are probably implicated in this process.