Anatomy, ultrastructure and chemical composition of food bodies of Hovenia dulcis (Rhamnaceae).

Annals of Botany
Rafael Andrade BuonoElder Antonio Sousa Paiva

Abstract

Food bodies (FBs) are structures that promote mutualism between plants and ants, which help protect them against herbivores. The present study aims to describe the anatomical organization, ultrastructure and chemical composition of the FBs in Hovenia dulcis, which represent the first structures of this type described in Rhamnaceae. Leaves in various stages of development were collected and fixed for examination under light, transmission and scanning electron microscopy. Samples of FBs were subjected to chemical analysis using thin-layer chromatography and nuclear magnetic resonance of (1)H and (13)C. The FBs vary from globose to conical and are restricted to the abaxial leaf surface, having a mixed origin, including epidermis and parenchyma. The FB epidermis is uniseriate, slightly pilose and has a thin cuticle. The epidermal cells are vacuolated and pigments or food reserves are absent. The parenchyma cells of immature FBs have dense cytoplasm showing mitochondria, endoplasmic reticulum and plastids. Mature FB cells store oils, which are free in the cytosol and occupy a large portion of the cell lumen. In these cells the plastids accumulate starch. The lipids present in FBs are glycerin esters characteristic of plant energy re...Continue Reading

References

Dec 1, 1965·The Journal of Cell Biology·D G McConnell
Dec 1, 1966·Journal of Economic Entomology·H W Echols
Jul 5, 2005·Comptes rendus biologies·Pascal-Jean SolanoAlain Dejean

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Citations

Jun 3, 2016·Frontiers in Plant Science·Zhi-Yao MaXiu-Qun Liu
Dec 4, 2008·Annals of Botany·Elder Antônio Sousa PaivaJulio Antonio Lombardi
Jan 22, 2014·The New Phytologist·Veronika E MayerRumsaïs Blatrix

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