-The Auriculoscypha anacardiicola symbiosis. A-D Basidiocarps of A. anacardiicola. E Scooped out basidiocarp of A. anacardiicola showing the basal tubercle and the enslaved coccid. F Cut-opened basal tubercle showing waxy coating. G Adult female of the coccid Neogreenia zeylanica. H Immature coccid of N. zeylanica scooped out from the tubercle. I Haustorial coils of A. anacardiicola in the haemolymph of the infected coccid. Scale Bars: A-G = 10 mm, H = 0.5 mm, I = 20 µm.

-The Auriculoscypha anacardiicola symbiosis. A-D Basidiocarps of A. anacardiicola. E Scooped out basidiocarp of A. anacardiicola showing the basal tubercle and the enslaved coccid. F Cut-opened basal tubercle showing waxy coating. G Adult female of the coccid Neogreenia zeylanica. H Immature coccid of N. zeylanica scooped out from the tubercle. I Haustorial coils of A. anacardiicola in the haemolymph of the infected coccid. Scale Bars: A-G = 10 mm, H = 0.5 mm, I = 20 µm.

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Thomas A, Manimohan P 2020-Dikaryotization seems essential for hypha formation and infection of coccid in the life-cycle of Auriculoscypha anacardiicola. Studies in Fungi 5(1), 66-72. Auriculoscypha, a monotypic basidiomycetous genus with A. anacardiicola as the only known species, is endemic to southwest India where it is seen in triple symbioses...

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... anacardiicola (Basidiomycota, Pucciniomycotina, Septobasidiaceae) is a fungus currently known only from southwest India where it is seen only on the bark of anacardiaceous trees in obligate association with a coccid (Reid & Manimohan 1985, Lalitha & Leelavathy 1990, Lalitha 1992, Kumar et al. 2007; Fig. 1). It is seen invariably associated with a coccid, Neogreenia zeylanica, belonging to the scale-insect family Margarodidae. The fungus gets its nourishment from the coccid using its haustoria that enter the body cavity of the insect and submerge in the haemolymph, while the insect feeds on the sap of the sieve tubes of host trees using ...

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