PMID: 16532179Mar 15, 2006Paper

Morphogenesis of galls induced by Baccharopelma dracunculifoliae (Hemiptera: Psyllidae) on Baccharis dracunculifolia (Asteraceae) leaves

Brazilian Journal of Biology = Revista Brasleira De Biologia
M ArduinJ E Kraus

Abstract

The commonest insect gall on Baccharis dracunculifolia (Asteraceae) leaves is induced by Baccharopelma dracunculifoliae (Hemiptera, Psyllidae). The gall-inducing insect attacks young leaves in both the unfolded and the fully expanded stages. Four developmental phases were observed in this type of gall: 1) A folding phase, during which the leaf lamina folded upward alongside the midrib and the edges of the upper portion of the leaf approached each other, forming a longitudinal slit. A single chamber was formed on the adaxial surface of the leaf; 2) A swelling phase, in which the folded leaf tissues thickened and the edges of the leaf drew closer together, narrowing the slit. In this phase the gall matured, turning succulent, fusiform and pale green. The single nymphal chamber was lined with white wax and was able to house from one to several nymphs; 3) A dehiscence phase, characterized by the opening of the slit to release inducers; and 4) A senescence phase, when the gall turned dark and dry. The dermal system of the mature gall was composed of a single-layered epidermis. The mesophyll was swollen, and the swelling was due mainly to hyperplasia of the parenchyma. The vascular tissues along the midrib vein were conspicuous and t...Continue Reading

References

Nov 26, 1998·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·J E KrausR Luque
Nov 15, 2000·Proceedings of the National Academy of Sciences of the United States of America·T Nyman, R Julkunen-Tiitto

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Citations

Mar 30, 2013·Anais Da Academia Brasileira De Ciências·Graciela G DiasRosy M S Isaias
Sep 2, 2011·Brazilian Journal of Biology = Revista Brasleira De Biologia·E M A F BastosP S Thiago
Apr 11, 2015·Ancient Science of Life·Ragunathan Muthuswamy, R Senthamarai
Dec 25, 2019·Journal of Chemical Ecology·Débora Munhoz RodriguesJairo Kenupp Bastos

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