Structure of the ovaries and oogenesis in Cixius nervosus (Cixiidae), Javesella pellucida and Conomelus anceps (Delphacidae) (Insecta, Hemiptera, Fulgoromorpha)

Szklarzewicz, Teresa; Jankowska, Władysława; Łukasiewicz, Kinga; Szymańska, Beata

doi:10.1016/j.asd.2006.09.001

Cited by 31 publications

(35 citation statements)

References 27 publications

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“…DAPI staining revealed that the follicular epithelial cells undergo a binuclear stage during vitellogenesis (Fig. B), as described in other insects of the infraorder Fulgoromorpha (Szklarzewicz et al , ). NlChP38 was synthesized in the follicular cells and appeared as bright dots in the cytoplasm (Fig.…”

Section: Resultssupporting

confidence: 79%

Amelogenin domain‐containing NlChP38 is necessary for normal ovulation in the brown planthopper

Lou

Lü

et al. 2019

Insect Molecular Biology

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The brown planthopper (BPH), Nilaparvata lugens, is a major threat to rice production. The eggshell plays an important role in insect reproduction. The constituents and formation process of BPH eggshells remains largely unknown. Here, we report a novel eggshell‐associated protein, NlChP38, containing an amelogenin domain, that is essential for normal ovulation in the BPH. NlChP38 is specifically expressed in the follicular cells from egg chambers at both RNA and protein levels. RNA interference of NlChP38 resulted in oocytes with loose and thin eggshell structure and caused ovulation difficulties. Immunofluorescence localization showed NlChP38 is deposited between follicular cells and oocytes during late choriogenesis. These results indicate that NlChP38 plays an important role in eggshell formation and could be a potential target for RNA interference control of the BPH.

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Section: Resultssupporting

confidence: 79%

Amelogenin domain‐containing NlChP38 is necessary for normal ovulation in the brown planthopper

Lou

Lü

et al. 2019

Insect Molecular Biology

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“…In insect ovaries, the germarium maintains oocyte production and contains germ cells with nuclei of irregular outline (Swiatek, 2006; Szklarzewicz et al, 2007). These germ cells are the initial entry locations for symbiotic bacteria such as Wolbachia in Drosophila melanogaster and for viral pathogens such as RSV in Laodelphax striatellus (Huo et al, 2014; Newton et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…The insect ovary is composed of ovarioles, and each ovariole contains a germarium, vitellarium, and pedicel from apex to base (Szklarzewicz et al, 2007). The oocytes produced by the germarium are arranged linearly in the vitellarium and surrounded by a layer of follicular cells (Szklarzewicz et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Virus-Induced Tubules: A Vehicle for Spread of Virions into Ovary Oocyte Cells of an Insect Vector

Liao

Mao

et al. 2017

Front. Microbiol.

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Many arthropod-borne viruses are persistently propagated and transovarially transmitted by female insect vectors through eggs, but the mechanism remains poorly understood. Insect oocytes are surrounded by a layer of follicular cells, which are connected to the oocyte through actin-based microvilli. Here, we demonstrate that a plant reovirus, rice gall dwarf virus (RGDV), exploits virus-containing tubules composed of viral non-structural protein Pns11 to pass through actin-based junctions between follicular cells or through actin-based microvilli from follicular cells into oocyte of its leafhopper vector Recilia dorsalis, thus overcoming transovarial transmission barriers. We further determine that the association of Pns11 tubules with actin-based cellular junctions or microvilli of the ovary is mediated by a specific interaction between Pns11 and actin. Interestingly, RGDV can replicate and assemble progeny virions in the oocyte cytoplasm. The destruction of the tubule assembly by RNA interference with synthesized double-stranded RNA targeting the Pns11 gene strongly inhibits transovarial transmission of RGDV by its vectors. For the first time, we show that a virus can exploit virus-induced tubule as a vehicle to overcome the transovarial transmission barrier by insect vectors.

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“…synthesis and accumulation of reserve substances) and choriogenesis (i.e. synthesis and secretion of precursors of eggshells and their deposition on the oocyte surface) (for a detailed description of ovaries of planthoppers see SZKLARZEWICZ et al 2007). …”

Section: Gross Morphology Of the Ovariesmentioning

confidence: 99%

Ultrastructure and Transovarial Transmission of Endosymbiotic Microorganisms in Conomelus anceps and Metcalfa pruinosa (Insecta, Hemiptera, Fulgoromorpha)

Michalik

Jankowska

Szklarzewicz

2009

folia biol (krakow)

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MICHALIK A., JANKOWSKA W., SZKLARZEWICZ T. 2009. Ultrastructure and transovarial transmission of endosymbiotic microorganisms in Conomelus anceps and Metcalfa pruinosa (Insecta, Hemiptera, Fulgoromorpha). Folia biol. (Kraków) #%: 131-137. Endosymbiotic microorganisms commonly occur in fulgoromorphans, as in other plant sap-sucking hemipterans. Large syncytial organs termed mycetomes are present in the body cavities of Conomelus anceps (Delphacidae) and Metcalfa pruinosa (Flatidae), in the close vicinity of the ovaries. The mycetomes are surrounded by a one-layered epithelium. The mycetome cytoplasm is filled with yeast-like symbiotic microorganisms (YLSs). The YLSs are transovarially transmitted to the next generation. The endosymbionts are released from the mycetomes and migrate towards the ovarioles containing vitellogenic oocytes. The YLSs pass through the cells of the ovariole stalk (pedicel) and enter the perivitelline space. Then, a deep depression is formed at the posterior pole of the oocyte. The YLSs accumulate in the oocyte depression and form a characteristic symbiont ball. The mycetome cytoplasm of Metcalfa pruinosa as well as epithelial cells surrounding the mycetome contain small, rod-shaped bacteria.

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Structure of the ovaries and oogenesis in Cixius nervosus (Cixiidae), Javesella pellucida and Conomelus anceps (Delphacidae) (Insecta, Hemiptera, Fulgoromorpha)

Cited by 31 publications

References 27 publications

Amelogenin domain‐containing NlChP38 is necessary for normal ovulation in the brown planthopper

Amelogenin domain‐containing NlChP38 is necessary for normal ovulation in the brown planthopper

Virus-Induced Tubules: A Vehicle for Spread of Virions into Ovary Oocyte Cells of an Insect Vector

Ultrastructure and Transovarial Transmission of Endosymbiotic Microorganisms in Conomelus anceps and Metcalfa pruinosa (Insecta, Hemiptera, Fulgoromorpha)

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