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  • Oxford University Press (OUP)  (29)
  • Wang, Xiaoming  (29)
  • 11
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    Online Resource
    Brassinosteroid Regulates Root Development with Highly Redundant Genes in Hexaploid Wheat
    Oxford University Press (OUP) ; 2019
    In:  Plant and Cell Physiology Vol. 60, No. 8 ( 2019-08-01), p. 1761-1777
    Details
    In: Plant and Cell Physiology, Oxford University Press (OUP), Vol. 60, No. 8 ( 2019-08-01), p. 1761-1777
    Abstract: Brassinosteroid (BR) plays an important role in plant development and biotic and abiotic stress tolerance, but its specific function remains largely unknown in wheat (Triticum aestivum L.), preventing its utilization in this important crop. In this study, the function of BR and its underlying cytological role in wheat root development were comprehensively investigated. Our findings demonstrated that BR has a conserved function in regulating root length in wheat, and novel roles in regulating lateral root emergence and root diameter were uncovered. Analyses of BR homologous gene composition and evolutionary divergence demonstrated that the genetic framework of the wheat BR pathway was close to that of rice, but contained highly redundant homologous copies of genes from the subgenome A, B and D. These homologous copies showed active expression and shared a conserved BR response. The expression of wheat DWF4 and glycogen synthase kinase (GSK) genes in Arabidopsis confirmed that multiple homologous copies maintained their conserved function in regulating root development, highlighting their redundant status and indicating that a special challenge exists in wheat gene modification to deal with this high redundancy. However, our results suggested that the hypermorphic effect of T. aestivum GSK (TaGSK) genes with point mutations may be an effective approach to overcome this redundancy in the manipulation of BR signaling in wheat. Our study provides fundamental data uncovering the function of BR in wheat root development, the underlying genetic basis and a possible strategy to manipulate BR signaling in hexaploid wheat.
    Type of Medium: Online Resource
    ISSN: 0032-0781 , 1471-9053
    URL: Article
    DOI: 10.1093/pcp/pcz088
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 2020758-X
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  • 12
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    Habitat Diversity, Stability, and Productivity of Malaria Vectors in Irrigated and Nonirrigated Ecosystems in Western Kenya
    Oxford University Press (OUP) ; 2023
    In:  Journal of Medical Entomology Vol. 60, No. 1 ( 2023-01-12), p. 202-212
    Details
    In: Journal of Medical Entomology, Oxford University Press (OUP), Vol. 60, No. 1 ( 2023-01-12), p. 202-212
    Abstract: Several sub-Saharan African countries rely on irrigation for food production. This study examined the impact of environmental modifications resulting from irrigation on the ecology of aquatic stages of malaria vectors in a semi-arid region of western Kenya. Mosquito larvae were collected from irrigated and non-irrigated ecosystems during seasonal cross-sectional and monthly longitudinal studies to assess habitat availability, stability, and productivity of anophelines in temporary, semipermanent, and permanent habitats during the dry and wet seasons. The duration of habitat stability was also compared between selected habitats. Emergence traps were used to determine the daily production of female adult mosquitoes from different habitat types. Malaria vectors were morphologically identified and sibling species subjected to molecular analysis. Data was statistically compared between the two ecosystems. After aggregating the data, the overall malaria vector productivity for habitats in the two ecosystems was estimated. Immatures of the malaria vector (Anopheles arabiensis) Patton (Diptera: Culicidae) comprised 98.3% of the Anopheles in both the irrigated and non-irrigated habitats. The irrigated ecosystem had the most habitats, higher larval densities, and produced 85.8% of emerged adult females. These results showed that irrigation provided conditions that increased habitat availability, stability, and diversity, consequently increasing the An. arabiensis production and potential risk of malaria transmission throughout the year. The irrigated ecosystems increased the number of habitats suitable for Anopheles breeding by about 3-fold compared to non-irrigated ecosystems. These results suggest that water management in the irrigation systems of western Kenya would serve as an effective method for malaria vector control.
    Type of Medium: Online Resource
    ISSN: 0022-2585 , 1938-2928
    URL: Article
    DOI: 10.1093/jme/tjac168
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2031006-7
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  • 13
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    Emerging Mosquito Resistance to Piperonyl Butoxide-Synergized Pyrethroid Insecticide and Its Mechanism
    Oxford University Press (OUP) ; 2022
    In:  Journal of Medical Entomology Vol. 59, No. 2 ( 2022-03-16), p. 638-647
    Details
    In: Journal of Medical Entomology, Oxford University Press (OUP), Vol. 59, No. 2 ( 2022-03-16), p. 638-647
    Abstract: Piperonyl butoxide (PBO)-synergized pyrethroid products are widely available for the control of pyrethroid-resistant mosquitoes. To date, no study has examined mosquito resistance after pre-exposure to PBO and subsequent enzymatic activity when exposed to PBO-synergized insecticides. We used Culex quinquefasciatus Say (Diptera: Culicidae), an important vector of arboviruses and lymphatic filariasis, as a model to examine the insecticide resistance mechanisms of mosquitoes to PBO-synergized pyrethroid using modified World Health Organization tube bioassays and biochemical analysis of metabolic enzyme expressions pre- and post-PBO exposure. Mosquito eggs and larvae were collected from three cities in Orange County in July 2020 and reared in insectary, and F0 adults were used in this study. A JHB susceptible strain was used as a control. Mosquito mortalities and metabolic enzyme expressions were examined in mosquitoes with/without pre-exposure to different PBO concentrations and exposure durations. Except for malathion, wild strain Cx quinquefasciatus mosquitoes were resistant to all insecticides tested, including PBO-synergized pyrethroids (mortality range 3.7 ± 4.7% to 66.7 ± 7.7%). Wild strain mosquitoes had elevated levels of carboxylesterase (COE, 3.8-fold) and monooxygenase (P450, 2.1-fold) but not glutathione S-transferase (GST) compared to susceptible mosquitoes. When wild strain mosquitoes were pre-exposed to 4% PBO, the 50% lethal concentration of deltamethrin was reduced from 0.22% to 0.10%, compared to 0.02% for a susceptible strain. The knockdown resistance gene mutation (L1014F) rate was 62% in wild strain mosquitoes. PBO pre-exposure suppressed P450 enzyme expression levels by 25~34% and GST by 11%, but had no impact on COE enzyme expression. Even with an optimal PBO concentration (7%) and exposure duration (3h), wild strain mosquitoes had significantly higher P450 enzyme expression levels after PBO exposure compared to the susceptible laboratory strain. These results further demonstrate other studies that PBO alone may not be enough to control highly pyrethroid-resistant mosquitoes due to multiple resistance mechanisms. Mosquito resistance to PBO-synergized insecticide should be closely monitored through a routine resistance management program for effective control of mosquitoes and the pathogens they transmit.
    Type of Medium: Online Resource
    ISSN: 0022-2585 , 1938-2928
    URL: Article
    DOI: 10.1093/jme/tjab231
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2031006-7
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  • 14
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    Wind-assisted high-altitude dispersal of mosquitoes and other insects in East Africa
    Oxford University Press (OUP) ; 2023
    In:  Journal of Medical Entomology Vol. 60, No. 4 ( 2023-07-12), p. 698-707
    Details
    In: Journal of Medical Entomology, Oxford University Press (OUP), Vol. 60, No. 4 ( 2023-07-12), p. 698-707
    Abstract: Knowledge of insect dispersal is relevant to the control of agricultural pests, vector-borne transmission of human and veterinary pathogens, and insect biodiversity. Previous studies in a malaria endemic area of the Sahel region in West Africa revealed high-altitude, long-distance migration of insects and various mosquito species. The objective of the current study was to assess whether similar behavior is exhibited by mosquitoes and other insects around the Lake Victoria basin region of Kenya in East Africa. Insects were sampled monthly from dusk to dawn over 1 year using sticky nets suspended on a tethered helium-filled balloon. A total of 17,883 insects were caught on nets tethered at 90, 120, and 160 m above ground level; 818 insects were caught in control nets. Small insects ( & lt;0.5 cm, n = 15,250) were predominant regardless of height compared with large insects ( & gt;0.5 cm, n = 2,334) and mosquitoes (n = 299). Seven orders were identified; dipteran was the most common. Barcoding molecular assays of 184 mosquitoes identified 7 genera, with Culex being the most common (65.8%) and Anopheles being the least common (5.4%). The survival rate of mosquitoes, experimentally exposed to high-altitude overnight, was significantly lower than controls maintained in the laboratory (19% vs. 85%). There were no significant differences in mosquito survival and oviposition rate according to capture height. These data suggest that windborne dispersal activity of mosquito vectors of malaria and other diseases occurs on a broad scale in sub-Saharan Africa.
    Type of Medium: Online Resource
    ISSN: 0022-2585 , 1938-2928
    URL: Article
    DOI: 10.1093/jme/tjad033
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2031006-7
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  • 15
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    Irrigation-Induced Environmental Changes Sustain Malaria Transmission and Compromise Intervention Effectiveness
    Oxford University Press (OUP) ; 2022
    In:  The Journal of Infectious Diseases Vol. 226, No. 9 ( 2022-11-01), p. 1657-1666
    Details
    In: The Journal of Infectious Diseases, Oxford University Press (OUP), Vol. 226, No. 9 ( 2022-11-01), p. 1657-1666
    Abstract: Irrigated agriculture enhances food security, but it potentially promotes mosquito-borne disease transmission and affects vector intervention effectiveness. This study was conducted in the irrigated and nonirrigated areas of rural Homa Bay and Kisumu Counties, Kenya. Methods We performed cross-sectional and longitudinal surveys to determine Plasmodium infection prevalence, clinical malaria incidence, molecular force of infection (molFOI), and multiplicity of infection. We examined the impact of irrigation on the effectiveness of the new interventions. Results We found that irrigation was associated with & gt;2-fold higher Plasmodium infection prevalence and 3-fold higher clinical malaria incidence compared to the nonirrigated area. Residents in the irrigated area experienced persistent, low-density parasite infections and higher molFOI. Addition of indoor residual spraying was effective in reducing malaria burden, but the reduction was more pronounced in the nonirrigated area than in the irrigated area. Conclusions Our findings collectively suggest that irrigation may sustain and enhance Plasmodium transmission and affects intervention effectiveness.
    Type of Medium: Online Resource
    ISSN: 0022-1899 , 1537-6613
    URL: Article
    DOI: 10.1093/infdis/jiac361
    RVK:
    XA 10000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1473843-0
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  • 16
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    Heritability of cerebral blood flow in adolescent and young adult twins: an arterial spin labeling perfusion imaging study
    Oxford University Press (OUP) ; 2023
    In:  Cerebral Cortex Vol. 33, No. 20 ( 2023-10-09), p. 10624-10633
    Details
    In: Cerebral Cortex, Oxford University Press (OUP), Vol. 33, No. 20 ( 2023-10-09), p. 10624-10633
    Abstract: Blood perfusion is a fundamental physiological property of all organs and is closely linked to brain metabolism. Genetic factors were reported to have important influences on cerebral blood flow. However, the profile of genetic contributions to cerebral blood flow in adolescents or young adults was underexplored. In this study, we recruited a sample of 65 pairs of same-sex adolescent or young adult twins undergoing resting arterial spin labeling imaging to conduct heritability analyses. Our findings indicate that genetic factors modestly affect cerebral blood flow in adolescents or young adults in the territories of left anterior cerebral artery and right posterior cerebral artery, with the primary contribution being to the frontal regions, cingulate gyrus, and striatum, suggesting a profile of genetic contributions to specific brain regions. Notably, the regions in the left hemisphere demonstrate the highest heritability in most regions examined. These results expand our knowledge of the genetic basis of cerebral blood flow in the developing brain and emphasize the importance of regional analysis in understanding the heritability of cerebral blood flow. Such insights may contribute to our understanding of the underlying genetic mechanism of brain functions and altered cerebral blood flow observed in youths with brain disorders.
    Type of Medium: Online Resource
    ISSN: 1047-3211 , 1460-2199
    URL: Article
    DOI: 10.1093/cercor/bhad310
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 1483485-6
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  • 17
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    Variable cell division time and asymmetric division site lead to filament-to-rod cell cycle of Lysinibacillus varians
    Oxford University Press (OUP) ; 2020
    In:  FEMS Microbiology Letters Vol. 367, No. 7 ( 2020-04-01)
    Details
    In: FEMS Microbiology Letters, Oxford University Press (OUP), Vol. 367, No. 7 ( 2020-04-01)
    Abstract: All well-established cell size homeostasis paradigms are based on the researches of rod bacteria like B. subtilis and E. coli, suggesting a constant division time (timer model), division size (sizer model) or added size (adder model) before division. However, Lysinibacillus varians, a new species with regular filament-to-rod cell cycle, is inconsistent with existing models. In this study, the cell size parameters of the type strain GY32, were investigated by combing multiple microscopy techniques and single-cell approach. Our results showed that the filaments of strain GY32 were unicellular cells with multiple nucleoids. The division time of GY32 cells was variable and their daughter cells produced by asymmetric binary fission had different birth sizes, which were proportional to their elongation rates, resulting in high heterogeneity among the sister cells. Furthermore, the added size from birth to division was significantly shorter than birth size (p  & lt; 0.01) and decreased along generations. The results above revealed that the asymmetric division site and varied cell size parameters resulted in filament-to-rod cell cycle of L. varians and cell size homeostasis could be a more complex and dynamic process than previously assumed. These findings would be helpful in elucidating the open questions in cell division and cell size heterogeneity.
    Type of Medium: Online Resource
    ISSN: 1574-6968
    URL: Article
    DOI: 10.1093/femsle/fnaa054
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1501716-3
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  • 18
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    A survey of Ballastless track defects in China’s high-speed railway after ten years of service
    Oxford University Press (OUP) ; 2022
    In:  Intelligent Transportation Infrastructure Vol. 1 ( 2022-09-01)
    Details
    In: Intelligent Transportation Infrastructure, Oxford University Press (OUP), Vol. 1 ( 2022-09-01)
    Abstract: A considerable amount of data have been obtained after more than 10 years of operations on China’s high-speed railway ballastless tracks; however, there is still a lack of survey in the operation and maintenance of ballastless tracks. Based on the results of an on-site survey of the service status of China’s high-speed railway ballastless tracks conducted in 2021, the common defects and related treatment measures for four main types of ballastless tracks, namely, CRTS I, CRTS II, CRTS III slab, and CRTS double-block, are systematically summarised in this study. The most critical defects in the diverse types of ballastless tracks are comparatively analysed. In addition, suggestions for ballastless track selection are presented by considering different factors, which will guide the development and construction of ballastless tracks in the future and be vital for improving the safety, comfort, and durability of high-speed railway operations.
    Type of Medium: Online Resource
    ISSN: 2752-9991
    URL: Article
    DOI: 10.1093/iti/liac023
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 3158187-0
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  • 19
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    Qurliqnoria (Mammalia: Bovidae) fossils from Qaidam Basin, Tibetan Plateau and deep-time endemism of the Tibetan antelope lineage
    Oxford University Press (OUP) ; 2022
    In:  Zoological Journal of the Linnean Society Vol. 196, No. 3 ( 2022-11-02), p. 990-1012
    Details
    In: Zoological Journal of the Linnean Society, Oxford University Press (OUP), Vol. 196, No. 3 ( 2022-11-02), p. 990-1012
    Abstract: The Tibetan antelope (Pantholops hodgsonii) is an endemic bovid of the Tibetan Plateau, which was, until recently, considered an endangered species. Researchers have long speculated on the evolutionary origin of Pantholops, suggesting a connection to the rare fossil bovid Qurliqnoria. However, the lack of adequate fossil samples has prevented the testing of this deep-time endemism hypothesis for eight decades. Here, we report new fossils of Qurliqnoria cheni from the northern Tibetan Plateau, substantially increasing the amount of morphological data that can be brought to bear on the question of Tibetan antelope evolution. Phylogenetic analysis supports a Pantholops–Qurliqnoria clade and suggests that this lineage has been endemic to the Plateau for 11 Myr. Recent morphological and molecular studies that support the outgroup position of Pantholops relative to caprins (goats and relatives) and the fossil record of stem bovids from Europe together suggest that the Qurliqnoria–Pantholops lineage is likely to have dispersed to the Tibetan Plateau 15–11 Mya. Furthermore, the harsh environmental conditions to which Pantholops has adapted are likely to extend back to the time of its evolutionary origin. These findings provide an important new context for conservation management and research into the near-threatened Tibetan antelope, as the longest-living endemic member of the Tibetan Plateau fauna.
    Type of Medium: Online Resource
    ISSN: 0024-4082 , 1096-3642
    URL: Article
    DOI: 10.1093/zoolinnean/zlab117
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1471951-4
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  • 20
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    Rapid Identification of Falsely Elevated Serum Cardiac Troponin I Values in a Stat Laboratory
    Oxford University Press (OUP) ; 2014
    In:  Laboratory Medicine Vol. 45, No. 1 ( 2014-02), p. 82-85
    Details
    In: Laboratory Medicine, Oxford University Press (OUP), Vol. 45, No. 1 ( 2014-02), p. 82-85
    Type of Medium: Online Resource
    ISSN: 0007-5027 , 1943-7730
    URL: Article
    DOI: 10.1309/LMO7HLI8EODNAZSG
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2014
    detail.hit.zdb_id: 2100869-3
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