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TRABECULAE IN THE GRAPEVINE INFECTED WITH LEAFROLL VIRUS
Author(s) -
Hoefert Lynn L.,
Gifford Ernest M.
Publication year - 1967
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1967.tb06918.x
Subject(s) - phloem , biology , parenchyma , petiole (insect anatomy) , botany , anatomy , vitis vinifera , virus , virology , hymenoptera
Microscopic examination of leaf midvein, petiole, and stem sections of Vitis vinifera L. ‘Zinfandel’ infected with the leafroll virus has shown the presence of trabeculae (cellulosic bars or rods which traverse the lumina of cells). The cellulosic nature of these structures has been verified by the use of histochemical tests. Trabeculae were found in interfascicular parenchyma and in phloem parenchyma cells, often in association with oxalate crystals. Trabeculae were not present in healthy grapevines. Other workers have found trabeculae in plants infected by fanleaf virus and tobacco mosaic virus. Arguments are presented for the hypothesis that viruses are responsible for the occurrence of trabeculae in such plants.