The Immune Response of Hemocytes of the Insect Oncopeltus Fasciatus Against the Flagellate Phytomonas Serpens

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2013 Sep 10

PMID 24015207

Citations 5

Authors

Thiago L Alves E Silva

Luiz R C Vasconcellos

Angela H Lopes

Thais Souto-Padron

Affiliations

Soon will be listed here.

Abstract

The genus Phytomonas includes parasites that are etiological agents of important plant diseases, especially in Central and South America. These parasites are transmitted to plants via the bite of an infected phytophagous hemipteran. Despite the economic impact of these parasites, many basic questions regarding the genus Phytomonas remain unanswered, such as the mechanism by which the parasites cope with the immune response of the insect vector. In this report, using a model of systemic infection, we describe the function of Oncopeltus fasciatus hemocytes in the immune response towards the tomato parasite Phytomonas serpens. Hemocytes respond to infection by trapping parasites in nodular structures and phagocytizing the parasites. In electron microscopy of hemocytes, parasites were located inside vacuoles, which appear fused with lysosomes. The parasites reached the O. fasciatus salivary glands at least six hours post-infection. After 72 hours post-infection, many parasites were attached to the salivary gland outer surface. Thus, the cellular responses did not kill all the parasites.

Citing Articles

The Enhanced Expression of Cruzipain-Like Molecules in the Phytoflagellate Recovered From the Invertebrate and Plant Hosts.

Oliveira S, Elias C, Dias F, Lopes A, dAvila-Levy C, Santos A Front Cell Infect Microbiol. 2022; 11:819133.

PMID: 35096661 PMC: 8793489. DOI: 10.3389/fcimb.2021.819133.

Natural infection by the protozoan Leptomonas wallacei impacts the morphology, physiology, reproduction, and lifespan of the insect Oncopeltus fasciatus.

Vasconcellos L, Carvalho L, Silveira F, Goncalves I, Coelho F, Talyuli O Sci Rep. 2019; 9(1):17468.

PMID: 31767875 PMC: 6877526. DOI: 10.1038/s41598-019-53678-1.

Assessment of the effects of orally administered ferrous sulfate on Oncopeltus fasciatus (Heteroptera: Lygaeidae).

Ferrero A, Torreblanca A, Garcera M Environ Sci Pollut Res Int. 2017; 24(9):8551-8561.

PMID: 28194672 DOI: 10.1007/s11356-017-8546-z.

Phytomonas: trypanosomatids adapted to plant environments.

Jaskowska E, Butler C, Preston G, Kelly S PLoS Pathog. 2015; 11(1):e1004484.

PMID: 25607944 PMC: 4301809. DOI: 10.1371/journal.ppat.1004484.

Transovum transmission of trypanosomatid cysts in the Milkweed bug, Oncopeltus fasciatus.

de Almeida Dias F, Vasconcellos L, Romeiro A, Attias M, Souto-Padron T, Hampshire Lopes A PLoS One. 2014; 9(9):e108746.

PMID: 25259791 PMC: 4178184. DOI: 10.1371/journal.pone.0108746.

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