Relationship between the honeydew of mealy bugs and the growth of Phlebopus portentosus

PloS One
Yi-Wei FangChun-Xia Zhang

Abstract

Phlebopus portentosus and mealy bugs form a fungus-insect gall on the roots of host plants. The fungus and mealy bugs benefit mutually through the gall, which is the key link in the nutritional mechanism of P. portentosus. The cavity of the fungus-insect gall provides an ideal shelter for mealy bugs survival and reproduction, but how does P. portentosus benefit from this symbiotic relationship? Anatomical examination of fungus-insect galls revealed that one or more mealy bugs of different generations were living inside the galls. The mealy bug's mouthpart could penetrate through the mycelium layer of the inside of the gall and suck plant juice from the host plant root. Mealy bugs excreted honeydew inside or outside the galls. The results of both honeydew agar medium and quartz tests showed that the honeydew can attract and promote the mycelial growth of P. portentosus. A test of the relationship between the honeydew and the formation of the fungus-insect gall showed that honeydew promoted gall formation. All experimental results in this study show that the honeydew secreted by mealy bugs can attract and promote the mycelial growth of P. portentosus, forming a fungus-insect gall, because mealy bugs' honeydew is rich in amino aci...Continue Reading

References

Dec 7, 2006·Proceedings. Biological Sciences·John D Styrsky, Micky D Eubanks
Oct 26, 2014·Mycologia·Chun-Xia ZhangYun Wang

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Citations

May 29, 2021·Pest Management Science·Ze SunMan-Qun Wang

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Software Mentioned

SPSS

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