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Minsheng You

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https://www.readbyqxmd.com/read/28683762/segmental-duplications-evolution-and-impact-among-the-current-lepidoptera-genomes
#1
Qian Zhao, Dongna Ma, Liette Vasseur, Minsheng You
BACKGROUND: Structural variation among genomes is now viewed to be as important as single nucleoid polymorphisms in influencing the phenotype and evolution of a species. Segmental duplication (SD) is defined as segments of DNA with homologous sequence. RESULTS: Here, we performed a systematic analysis of segmental duplications (SDs) among five lepidopteran reference genomes (Plutella xylostella, Danaus plexippus, Bombyx mori, Manduca sexta and Heliconius melpomene) to understand their potential impact on the evolution of these species...
July 6, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28632152/isolation-and-characterization-of-microsatellite-loci-for-cotesia-plutellae-hymenoptera-braconidae
#2
Tiansheng Liu, Fushi Ke, Shijun You, Wenbin Chen, Weiyi He, Minsheng You
Fourteen polymorphic microsatellite loci were isolated in this transcriptome-based data analysis for Cotesia plutellae, which is an important larval parasitoid of the worldwide pest Plutella xylostella. A subsequent test was performed for a wild C. plutellae population (N = 32) from Fuzhou, Fujian, southeastern China, to verify the effectiveness of the 14 microsatellite loci in future studies on C. plutellae genetic diversity. The observed number of alleles ranged from two to six. The expected and observed heterozygosity ranged from 0...
June 20, 2017: Insects
https://www.readbyqxmd.com/read/28501604/high-production-purification-biochemical-characterization-and-gene-analysis-of-a-novel-catalase-from-the-thermophilic-bacterium-ureibacillus-thermosphaericus-fzsf03
#3
Xianbo Jia, Xinjian Lin, Yandan Tian, Jichen Chen, Minsheng You
A catalase-producing thermophilic bacterium, Ureibacillus thermosphaericus FZSF03, was isolated from high-temperature compost. Catalase production in this strain increased 31 times and reached 57,630U/mL after optimization in a shake flask, which might represent the highest catalase activity level among reported wild strains. This catalase was further purified and identified. The purified enzyme showed a specific activity of 219,360U/mg, higher than many other catalases. The molecular weight of this enzyme is 52kDa according to sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), and the enzyme was identified as a monofunctional haeme catalase of Ureibacillus thermosphaericus by liquid chromatography-mass spectrometry (LC-MS)/MS...
May 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28491055/metagenomic-sequencing-of-diamondback-moth-gut-microbiome-unveils-key-holobiont-adaptations-for-herbivory
#4
Xiaofeng Xia, Geoff M Gurr, Liette Vasseur, Dandan Zheng, Huanzi Zhong, Bingcai Qin, Junhan Lin, Yue Wang, FengQin Song, Yong Li, Hailan Lin, Minsheng You
Herbivore specialists adapt to feed on a specific group of host plants by evolving various mechanisms to respond to plant defenses. Insects also possess complex gut microbiotas but their potential role in adaptation is poorly understood. Our previous study of the genome of diamondback moth, Plutella xylostella, revealed an intrinsic capacity to detoxify plant defense compounds, which is an important factor in its success as a pest. Here we expand on that work with a complete taxonomic and functional profile of the P...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28422446/fusion-of-a-family-20-carbohydrate-binding-module-cbm20-with-cyclodextrin-glycosyltransferase-of-geobacillus-sp-chb1-improves-catalytic-efficiency
#5
Xianbo Jia, Yonghua Guo, Xinjian Lin, Minsheng You, Chenqiang Lin, Longjun Chen, Jichen Chen
Cyclodextrin glycosyltransferase (CGTase) is an important industrial enzyme for production of cyclodextrins (CDs) from starch by intramolecular transglycosylation. CGTase consists of five domains labeled A to E. For optimizing catalytic activity of CGTase, CGTase of Geobacillus sp. was fused with the family 20 carbohydrate-binding module (CBM) of the Bacillus circulans strain 251 CGTase. The CBMbc251 that has a low binding free energy with maltohexaose, was selected by in silico design. Then the fusion enzyme, CGTΔE-CBMbc251, was constructed by fusing the CBMbc251 to the C-terminal region of CGTΔE...
June 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28196471/characterization-and-expression-profiling-of-serine-protease-inhibitors-in-the-diamondback-moth-plutella-xylostella-lepidoptera-plutellidae
#6
Hailan Lin, Xijian Lin, Jiwei Zhu, Xiao-Qiang Yu, Xiaofeng Xia, Fengluan Yao, Guang Yang, Minsheng You
BACKGROUND: Serine protease inhibitors (SPIs) have been found in all living organisms and play significant roles in digestion, development and innate immunity. In this study, we present a genome-wide identification and expression profiling of SPI genes in the diamondback moth, Plutella xylostella (L.), a major pest of cruciferous crops with global distribution and broad resistance to different types of insecticides. RESULTS: A total of 61 potential SPI genes were identified in the P...
February 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28103237/adult-tea-green-leafhoppers-empoasca-onukii-matsuda-change-behaviors-under-varying-light-conditions
#7
Longqing Shi, Liette Vasseur, Huoshui Huang, Zhaohua Zeng, Guiping Hu, Xin Liu, Minsheng You
Insect behaviors are often influenced by light conditions including photoperiod, light intensity, and wavelength. Understanding pest insect responses to changing light conditions may help with developing alternative strategies for pest control. Little is known about the behavioral responses of leafhoppers (Hemiptera: Cicadellidae) to light conditions. The behavior of the tea green leafhopper, Empoasca onukii Matsuda, was examined when exposed to different light photoperiods or wavelengths. Observations included the frequency of locomotion and cleaning activities, and the duration of time spent searching...
2017: PloS One
https://www.readbyqxmd.com/read/27845388/avoidance-escape-and-microstructural-adaptations-of-the-tea-green-leafhopper-to-water-droplets
#8
Meizhen Lin, Liette Vasseur, Guang Yang, Geoff M Gurr, Minsheng You
Rain and dew droplets can dislodge or drown small insects and may be important factors that drive adaptations for avoidance and escape. Studying the microstructure of small insects and insect behaviour can help understand these adaptations. We quantified avoidance behaviour and entrapment of nymphs and adults of the tea green leafhopper (Empoasca onukii) using simulated rainfall onto host plant foliage and made observations of pretarsi and abdomen microstructures. Adults responded rapidly to simulated rainfall and escaped by jumping whilst most young nymphs were washed from water-sprayed leaves though older nymphs tended to remain on leaves and subsequently escaped from water droplets...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27833616/coconut-lethal-yellowing-diseases-a-phytoplasma-threat-to-palms-of-global-economic-and-social-significance
#9
REVIEW
Geoff M Gurr, Anne C Johnson, Gavin J Ash, Bree A L Wilson, Mark M Ero, Carmel A Pilotti, Charles F Dewhurst, Minsheng S You
The recent discovery of Bogia coconut syndrome in Papua New Guinea (PNG) is the first report of a lethal yellowing disease (LYD) in Oceania. Numerous outbreaks of LYDs of coconut have been recorded in the Caribbean and Africa since the late Nineteenth century and have caused the death of millions of palms across several continents during the Twentieth century. Despite the severity of economic losses, it was only in the 1970s that the causes of LYDs were identified as phytoplasmas, a group of insect-transmitted bacteria associated with diseases in many other economically important crop species...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27813664/habitat-management-to-suppress-pest-populations-progress-and-prospects
#10
Geoff M Gurr, Steve D Wratten, Douglas A Landis, Minsheng You
Habitat management involving manipulation of farmland vegetation can exert direct suppressive effects on pests and promote natural enemies. Advances in theory and practical techniques have allowed habitat management to become an important subdiscipline of pest management. Improved understanding of biodiversity-ecosystem function relationships means that researchers now have a firmer theoretical foundation on which to design habitat management strategies for pest suppression in agricultural systems, including landscape-scale effects...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27786249/determining-putative-vectors-of-the-bogia-coconut-syndrome-phytoplasma-using-loop-mediated-isothermal-amplification-of-single-insect-feeding-media
#11
Hengyu Lu, Bree A L Wilson, Gavin J Ash, Sharon B Woruba, Murray J Fletcher, Minsheng You, Guang Yang, Geoff M Gurr
Phytoplasmas are insect vectored mollicutes responsible for disease in many economically important crops. Determining which insect species are vectors of a given phytoplasma is important for managing disease but is methodologically challenging because disease-free plants need to be exposed to large numbers of insects, often over many months. A relatively new method to detect likely transmission involves molecular testing for phytoplasma DNA in sucrose solution that insects have fed upon. In this study we combined this feeding medium method with a loop-mediated isothermal amplification (LAMP) assay to study 627 insect specimens of 11 Hemiptera taxa sampled from sites in Papua New Guinea affected by Bogia coconut syndrome (BCS)...
October 27, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27678067/characterization-and-expression-profiling-of-atp-binding-cassette-transporter-genes-in-the-diamondback-moth-plutella-xylostella-l
#12
Weiping Qi, Xiaoli Ma, Weiyi He, Wei Chen, Mingmin Zou, Geoff M Gurr, Liette Vasseur, Minsheng You
BACKGROUND: ATP-binding cassette (ABC) transporters are one of the major transmembrane protein families found in all organisms and play important roles in transporting a variety of compounds across intra and extra cellular membranes. In some species, ABC transporters may be involved in the detoxification of substances such as insecticides. The diamondback moth, Plutella xylostella (L.), a destructive pest of cruciferous crops worldwide, is an important species to study as it is resistant to many types of insecticides as well as biological control Bacillus thuringiensis toxins...
September 27, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27318252/crispr-cas9-mediated-knockout-of-the-abdominal-a-homeotic-gene-in-the-global-pest-diamondback-moth-plutella-xylostella
#13
Yuping Huang, Yazhou Chen, Baosheng Zeng, Yajun Wang, Anthony A James, Geoff M Gurr, Guang Yang, Xijian Lin, Yongping Huang, Minsheng You
The diamondback moth, Plutella xylostella (L.), is a worldwide agricultural pest that has developed resistance to multiple classes of insecticides. Genetics-based approaches show promise as alternative pest management approaches but require functional studies to identify suitable gene targets. Here we use the CRISPR/Cas9 system to target a gene, abdominal-A, which has an important role in determining the identity and functionality of abdominal segments. We report that P. xylostella abdominal-A (Pxabd-A) has two structurally-similar splice isoforms (A and B) that differ only in the length of exon II, with 15 additional nucleotides in isoform A...
August 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/26811762/genetic-differentiation-of-the-regional-plutella-xylostella-populations-across-the-taiwan-strait-based-on-identification-of-microsatellite-markers
#14
Fushi Ke, Shijun You, Weiyi He, Tiansheng Liu, Liette Vasseur, Carl J Douglas, Minsheng You
Movement of individuals through events, such as storms or crop transportation, may affect survival and distribution of insect pests, as well as population genetic structure at a regional scale. Understanding what factors contribute to gene flow in pest populations remains very important for sustainable pest management. The diamondback moth (Plutella xylostella) is an insect pest well known for its capacity of moving over short to long distances. Here, we used newly isolated microsatellite markers to analyze the genetic structure of nine populations across the Taiwan Strait of China (Taiwan and Fujian)...
December 2015: Ecology and Evolution
https://www.readbyqxmd.com/read/26793225/conservation-biological-control-of-pests-in-the-molecular-era-new-opportunities-to-address-old-constraints
#15
REVIEW
Geoff M Gurr, Minsheng You
Biological control has long been considered a potential alternative to pesticidal strategies for pest management but its impact and level of use globally remain modest and inconsistent. A rapidly expanding range of molecular - particularly DNA-related - techniques is currently revolutionizing many life sciences. This review identifies a series of constraints on the development and uptake of conservation biological control and considers the contemporary and likely future influence of molecular methods on these constraints...
2015: Frontiers in Plant Science
https://www.readbyqxmd.com/read/26667272/biology-ecology-and-management-of-the-diamondback-moth-in-china
#16
REVIEW
Zhenyu Li, Xia Feng, Shu-Sheng Liu, Minsheng You, Michael J Furlong
The diamondback moth (DBM), Plutella xylostella (L.), costs the Chinese economy US$0.77 billion annually, and considerable research has focused on its biology, ecology, and management. Much of this research has been published locally and is inaccessible outside China. Since 1990 Brassica vegetable production has increased 20-fold and production practices have intensified, but losses continue to increase. Insecticide use is widespread and many DBM populations, particularly in southern provinces, are resistant to multiple compounds...
2016: Annual Review of Entomology
https://www.readbyqxmd.com/read/26653876/genome-wide-identification-and-expression-profiling-of-serine-proteases-and-homologs-in-the-diamondback-moth-plutella-xylostella-l
#17
Hailan Lin, Xiaofeng Xia, Liying Yu, Liette Vasseur, Geoff M Gurr, Fengluan Yao, Guang Yang, Minsheng You
BACKGROUND: Serine proteases (SPs) are crucial proteolytic enzymes responsible for digestion and other processes including signal transduction and immune responses in insects. Serine protease homologs (SPHs) lack catalytic activity but are involved in innate immunity. This study presents a genome-wide investigation of SPs and SPHs in the diamondback moth, Plutella xylostella (L.), a globally-distributed destructive pest of cruciferous crops. RESULTS: A total of 120 putative SPs and 101 putative SPHs were identified in the P...
December 10, 2015: BMC Genomics
https://www.readbyqxmd.com/read/26227337/generation-based-life-table-analysis-reveals-manifold-effects-of-inbreeding-on-the-population-fitness-in-plutella-xylostella
#18
Lu Peng, Mingmin Zou, Nana Ren, Miao Xie, Liette Vasseur, Yifan Yang, Weiyi He, Guang Yang, Geoff M Gurr, Youming Hou, Shijun You, Minsheng You
Understanding how inbreeding affects fitness is biologically important for conservation and pest management. Despite being a worldwide pest of many economically important cruciferous crops, the influence of inbreeding on diamondback moth, Plutella xylostella (L.), populations is currently unknown. Using age-stage-specific life tables, we quantified the inbreeding effects on fitness-related traits and demographic parameters of P. xylostella. Egg hatching rate, survival and fecundity of the inbred line significantly declined compared to those of the outbred line over time...
2015: Scientific Reports
https://www.readbyqxmd.com/read/25943446/genome-wide-characterization-and-expression-profiling-of-immune-genes-in-the-diamondback-moth-plutella-xylostella-l
#19
Xiaofeng Xia, Liying Yu, Minqian Xue, Xiaoqiang Yu, Liette Vasseur, Geoff M Gurr, Simon W Baxter, Hailan Lin, Junhan Lin, Minsheng You
The diamondback moth, Plutella xylostella (L.), is a destructive pest that attacks cruciferous crops worldwide. Immune responses are important for interactions between insects and pathogens and information on these underpins the development of strategies for biocontrol-based pest management. Little, however, is known about immune genes and their regulation patterns in P. xylostella. A total of 149 immune-related genes in 20 gene families were identified through comparison of P. xylostella genome with the genomes of other insects...
2015: Scientific Reports
https://www.readbyqxmd.com/read/25887517/characterization-and-expression-profiling-of-glutathione-s-transferases-in-the-diamondback-moth-plutella-xylostella-l
#20
Yanchun You, Miao Xie, Nana Ren, Xuemin Cheng, Jianyu Li, Xiaoli Ma, Minming Zou, Liette Vasseur, Geoff M Gurr, Minsheng You
BACKGROUND: Glutathione S-transferases (GSTs) are multifunctional detoxification enzymes that play important roles in insects. The completion of several insect genome projects has enabled the identification and characterization of GST genes over recent years. This study presents a genome-wide investigation of the diamondback moth (DBM), Plutella xylostella, a species in which the GSTs are of special importance because this pest is highly resistant to many insecticides. RESULTS: A total of 22 putative cytosolic GSTs were identified from a published P...
2015: BMC Genomics
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