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Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte)
The high sensitivity to oral RNA interference (RNAi) of western corn rootworm (WCR, Diabrotica virgifera virgifera Le Conte) provides a novel tool for pest control. Previous studies have shown that RNAi of DvSnf7, an essential cellular component of endosomal sorting complex required for transport (E...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3883649/ https://www.ncbi.nlm.nih.gov/pubmed/24409288 http://dx.doi.org/10.1371/journal.pone.0083985 |
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author | Koči, Juraj Ramaseshadri, Parthasarathy Bolognesi, Renata Segers, Gerrit Flannagan, Ronald Park, Yoonseong |
author_facet | Koči, Juraj Ramaseshadri, Parthasarathy Bolognesi, Renata Segers, Gerrit Flannagan, Ronald Park, Yoonseong |
author_sort | Koči, Juraj |
collection | PubMed |
description | The high sensitivity to oral RNA interference (RNAi) of western corn rootworm (WCR, Diabrotica virgifera virgifera Le Conte) provides a novel tool for pest control. Previous studies have shown that RNAi of DvSnf7, an essential cellular component of endosomal sorting complex required for transport (ESCRT), caused deficiencies in protein de-ubiquitination and autophagy, leading to WCR death. Here we investigated the detailed mechanism leading to larval death by analyzing the ultrastructural changes in midgut enterocytes of WCR treated with double-stranded RNA (ds-DvSnf7). The progressive phases of pathological symptoms caused by DvSnf7-RNAi in enterocytes include: 1) the appearance of irregularly shaped macroautophagic complexes consisting of relatively large lysosomes and multi-lamellar bodies, indicative of failure in autolysosome formation; 2) cell sloughing and loss of apical microvilli, and eventually, 3) massive loss of cellular contents indicating loss of membrane integrity. These data suggest that the critical functions of Snf7 in insect midgut cells demonstrated by the ultrastructural changes in DvSnf7 larval enterocytes underlies the conserved essential function of the ESCRT pathway in autophagy and membrane stability in other organisms. |
format | Online Article Text |
id | pubmed-3883649 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-38836492014-01-09 Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) Koči, Juraj Ramaseshadri, Parthasarathy Bolognesi, Renata Segers, Gerrit Flannagan, Ronald Park, Yoonseong PLoS One Research Article The high sensitivity to oral RNA interference (RNAi) of western corn rootworm (WCR, Diabrotica virgifera virgifera Le Conte) provides a novel tool for pest control. Previous studies have shown that RNAi of DvSnf7, an essential cellular component of endosomal sorting complex required for transport (ESCRT), caused deficiencies in protein de-ubiquitination and autophagy, leading to WCR death. Here we investigated the detailed mechanism leading to larval death by analyzing the ultrastructural changes in midgut enterocytes of WCR treated with double-stranded RNA (ds-DvSnf7). The progressive phases of pathological symptoms caused by DvSnf7-RNAi in enterocytes include: 1) the appearance of irregularly shaped macroautophagic complexes consisting of relatively large lysosomes and multi-lamellar bodies, indicative of failure in autolysosome formation; 2) cell sloughing and loss of apical microvilli, and eventually, 3) massive loss of cellular contents indicating loss of membrane integrity. These data suggest that the critical functions of Snf7 in insect midgut cells demonstrated by the ultrastructural changes in DvSnf7 larval enterocytes underlies the conserved essential function of the ESCRT pathway in autophagy and membrane stability in other organisms. Public Library of Science 2014-01-07 /pmc/articles/PMC3883649/ /pubmed/24409288 http://dx.doi.org/10.1371/journal.pone.0083985 Text en © 2014 Koči et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Koči, Juraj Ramaseshadri, Parthasarathy Bolognesi, Renata Segers, Gerrit Flannagan, Ronald Park, Yoonseong Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title | Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title_full | Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title_fullStr | Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title_full_unstemmed | Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title_short | Ultrastructural Changes Caused by Snf7 RNAi in Larval Enterocytes of Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) |
title_sort | ultrastructural changes caused by snf7 rnai in larval enterocytes of western corn rootworm (diabrotica virgifera virgifera le conte) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3883649/ https://www.ncbi.nlm.nih.gov/pubmed/24409288 http://dx.doi.org/10.1371/journal.pone.0083985 |
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