Publications by authors named "Yijing Cen"

Article Synopsis
  • Infection with pathogens like "Liberibacter asiaticus" and certain fungi can enhance the reproductive ability (fecundity) of insect vectors, which is beneficial for the pathogens.
  • This study focuses on the roles of specific microRNAs (miR-2 and novel-miR-109) in regulating these fecundity changes and found that lower levels of these miRNAs in the ovaries of infected insects are linked to increased fecundity and pathogen presence.
  • The findings suggest that a conserved mechanism exists where juvenile hormone suppresses these miRNAs, leading to altered gene expression that boosts female insect reproduction in the presence of bacterial and fungal infections.
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serves as the primary vector for ' Liberibacter asiaticus (Las),' the bacterium associated with the severe Asian form of huanglongbing. Las-positive are more fecund than their Las-negative counterparts and require extra energy expenditure. Therefore, understanding the molecular mechanisms linking metabolism and reproduction is of particular importance.

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The gut-dwelling microbiota is an indispensable part of termites. It is influenced by a series of factors, such as diet and captivity. The objectives of this study were to study the metabolic functions of hindgut microbiota and to investigate the influence of captivity on the hindgut microbiota.

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Article Synopsis
  • Scientists study how insects and the germs that make them sick interact, especially a bug called Diaphorina citri and a germ known as CLas, which causes a plant disease.
  • When the bug has CLas, it can lay more eggs than when it doesn't have it, but how this happens is still a mystery.
  • Researchers found that CLas changes the bug's body and uses some special molecules (like miR-275) to help it have more babies, which also helps the germ spread more easily.
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Background: Acute myeloid leukemia (AML) is one of the most common types of leukemia in adults. However, AML is relatively rare in the population overall, accounting for only about 1 percent of all cancers. Treatment for AML can be very effective for some patients, yet it leaves others with serious and even life-threatening side effects.

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Huanglongbing, a globally devastating citrus disease, is associated with Liberibacter asiaticus (Las) and is mainly transmitted by . Verification of the distribution and dynamics of Las in is critical to understanding Las transmitted by vectors in nature. Here, the distribution and titers of Las in different sexes and tissues of adults were investigated by fluorescence in-situ hybridization (FISH) and quantitative real-time PCR (qRT-PCR).

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Populations of decline with elevation and, in a study in Bhutan, were rarely found above 1200 m ASL. The impact of ultraviolet (UV) radiation, particularly UV-B, on immature stages of the psyllid was proposed as limiting factor. As no studies have been undertaken on the influences of UV radiation on the development of , we examined the effects of UV-A and UV-B on different stadia of the psyllid.

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(CTV) is one of the most important citrus tree viruses: a graft-transmissible virus that can be vectored by several aphid species. is the insect vector of " Liberibacter spp.", a bacterium associated with citrus Huanglongbing (HLB).

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(Yang & Li) is an important pest-threatening and plants (Rutaceae) and a newly identified insect vector of citrus Huanglongbing. The complete mitochondrial genome of was 14,906 bp in length, with 37 genes, including 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs). The phylogenetic trees inferred from Bayesian inference and maximum likelihood analyses confirmed as a member of the genus .

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' Liberibacter asiaticus' is an insect-transmitted, phloem-restricted α-proteobacterium associated with huanglongbing. Here, we provide the whole genome sequence of ' L. asiaticus' strain ReuSP1 from its insect vector (Hemiptera: Liviidae) collected in La Réunion.

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The Diaphorina citri Kuwayama (Hemiptera: Liviidae) also known as Asian citrus psyllid transmits 'Candidatus Liberibacter asiaticus' (CLas) associated with the citrus Huanglongbing (HLB). Minimizing Asian citrus psyllid populations is one of the most important methods for HLB control. The development and survival of Asian citrus psyllid were evaluated on CLas+ and CLas- plants of Citrus reticulata Blanco.

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Background: Diaphorina citri is a vector of 'Candidatus Liberibacter asiaticus' (CLas) associated with citrus Huanglongbing. In this study, the infection and titers of CLas in the psyllid, were monitored for life cycle stage, sex, host-plant CLas titer, host-plant genotype, and ambient temperature.

Results: Acquisition efficiency of CLas by D.

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Background: Diaphorina citri (Asian citrus psyllid; ACP) transmits 'Candidatus Liberibacter asiaticus' associated with citrus Huanglongbing (HLB). ACP has been reported in 11 provinces/regions in China, yet its population diversity remains unclear. In this study, we evaluated ACP population diversity in China using representative whole mitochondrial genome (mitogenome) sequences.

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Background: In insects, little is known about the co-evolution between their primary endosymbionts and hosts at the intraspecific level. This study examined co-diversification between the notorious agricultural pest Diaphorina citri and its primary endosymbionts (P-endosymbiont), 'Candidatus Carsonella ruddii' at the population level.

Results: Maximum likelihood, haplotype network, principal components and Bayesian clustering identified three lineages for D.

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Asian citrus psyllid (ACP, Diaphorina citri Kuwayama) transmits "Candidatus Liberibacter asiaticus" (CLas), an unculturable alpha-proteobacterium associated with citrus Huanglongbing (HLB). CLas has recently been found in California. Understanding ACP population diversity is necessary for HLB regulatory practices aimed at reducing CLas spread.

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A new sesquiterpene, eupatolide 13-O-β-d-glucopyranoside (eupatolide-II, 1), lactone glucoside, along with 15 known compounds, were isolated from the whole plant of Inula salsoloides (Asteraceae). Dichloromethane extract and compounds 1-11 were used to investigate insecticidal activities against vegetable important pest, striped flea beetle (Phyllotreta striolata Fabricius). None of the samples show any toxicity under concentration of 500 times, while compound 1 and the extract had toxic effect when the concentration increased to 250 times.

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Background: Diaphorina citri is the vector of 'Candidatus Liberibacter asiaticus', the most widespread pathogen associated huanglongbing, the most serious disease of citrus. To enhance our understanding of the distribution and origin of the psyllid, we investigated the genetic diversity and population structures of 24 populations in Asia and one from Florida based on the mtCOI gene. Simultaneously, genetic diversity and population structures of the primary endosymbiont (P-endosymbiont) 'Candidatus Carsonella ruddii' and secondary endosymbiont (S-endosymbiont) 'Candidatus Profftella armatura' of D.

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Potato psyllid (Bactericera cockerelli) is an important pest of potato, tomato and pepper. Not only could a toxin secreted by nymphs results in serious phytotoxemia in some host plants, but also over the past few years B. cockerelli was shown to transmit "Candidatus Liberibacter solanacearum", the putative bacterial pathogen of potato zebra chip (ZC) disease, to potato and tomato.

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The first complete mitochondrial genome (mitogenome) sequence of Asian citrus psyllid, (Hemiptera: Psyllidae) from Guangzhou, China, is presented. The circular mitogenome is 14,996 bp in length with an A + T content of 74.5%, and contains 13 protein-coding genes (PCGs), 22 tRNA genes (tRNAs), two rRNA genes and an AT-rich control region.

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This paper studied the controlling effects of Xanthium sibiricum and Syngonium podophyllum ethanol extracts, mobile oil emulsion and 0.3% azadirachtin EC on Myzus persicae and Lipaphis erysimi populations both in laboratory and in field. The results showed that in laboratory, X.

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This study showed that spraying 0.2 and 0.4 g x L(-1) Mikania micrantha alcohol extracts on Panonychus citri could significantly decrease the survival rates of P.

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The oviposition repellency of the alcohol extracts from 50 species of non-preferable plants and azadirachtin against citrus red mite (Panonychus citri) was determined using laboratory bioassays. In choice tests, the extracts from 42 of the 50 plant species and 1% azadirachtin (2000 x) significantly reduced oviposition 1d after treatment. The repellency effect of the extracts from the 42 plant species was better than that of azadirachtin.

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