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Li Q.,SPH Engineering | Li Q.,China Agricultural University | Wu L.,Zhejiang University | Hao J.,University of Maine, United States | And 6 more authors.
PLoS ONE | Year: 2015

A variety of volatile organic compounds (VOCs) produced by Ceratocystis fimbriata have strong bioactivity against a wide range of fungi, bacteria and oomycetes. Mycelial growth, conidial production, and spore germination of fungi and oomycetes were significantly inhibited after exposure to cultures of C. fimbriata, and colony formation of bacteria was also inhibited. Two post-harvest diseases, peach brown rot caused by Monilinia fructicola and citrus green mold caused by Penicillium digitatum, were controlled during a 4-day storage by enclosing wound-inoculated fruits with 10 standard diameter Petri plate cultures of C. fimbriata in a 15 L box. The fruits were freshly inoculated at onset of storage and the cultures of C. fimbriata were 6 days old. Percentage of control was 92 and 97%, respectively. After exposure to C. fimbriata VOCs, severely misshapen hyphae and conidia of these two post-harvest pathogens were observed by scanning electron microscopy, and their pathogenicity was lost or greatly reduced. Copyright: © 2015 Li et al. 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 credited.


Hu M.,China Agricultural University | Hu M.,SPH Engineering | Luo L.,China Agricultural University | Luo L.,SPH Engineering | And 4 more authors.
European Journal of Plant Pathology | Year: 2014

Ustilaginoidea virens is a ubiquitous plant pathogen that causes rice false smut disease, one of the most destructive diseases of rice (Oryza sativa L.) production. However, data concerning the effect of inoculation on disease development and the infection process of this pathogen are not comprehensive. In this study, the developmental processes of U. virens in rice panicles were characterized using an enhanced green fluorescent protein (EGFP) labelled strain. A mixture of hyphae and conidia of U. virens was used to inoculate rice panicles by leaf sheath injection during the booting stage of rice plants grown in a greenhouse. The panicles were assessed to determine the relationship between artificial inoculation and disease occurrence. Increasing volumes of inocula (0.2, 0.5, 1, and 2 ml of a mixture of hyphae-fragment and 2 × 106 conidia/ml suspension) caused more severe infections, and small differences were also observed for the different inoculation sites at the base, apex and mid-point of rice panicles. The optimum inoculation condition was 1-2 ml inoculum injected into the mid-point of rice panicles. Spikelet samples were collected as the disease progressed and observed by confocal laser scanning microscopy and scanning electron microscopy. The images collected showed that the primary site of U. virens colonization was at the base of the filaments with the inner spikelets becoming infected by hyphae at 24 h post inoculation (hpi). The accumulation of hyphae reached its highest level at 168 hpi, before the rice heading stage, as the infection extended upward from basal filaments to the anther apex, and then enclosed all the floral organs to produce a velvety smut ball. © 2013 KNPV.


SPH Engineering | Entity website

To update from an older version of UgCS to the most recent, just download the latest version and install it on top of the previous one. Version 2 ...


SPH Engineering | Entity website

For emergency services or search and rescue operations time is a very important factor. Whether it comes down to identifying certain areas on the map, locating missing people or even delivering medicine quickly, aerial support comes in handy ...


SPH Engineering | Entity website

UgCS 2.9 Has Been Released Its been long in the making, but its finally here ...


SPH Engineering | Entity website

No-Fly zones - airport registry UgCS comes with in-build no-fly zones for all major airports. Since all airports have a restricted flight zone when drones are not allowed for obvious reasons, this makes it safe to plan flights when not sure about the surroundings since the flight path will automatically be calculated around the no-fly zone ...


Announcing DJI Phantom 4 and Matrice 100 Support in UgCS In 2015 DJI announced the DJI Matrice 100 their version of a drone for developers and hardware enthusiasts. In early 2016 they released the new Phantom DJI Phantom 4 ...


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Please visit our YouTube channel - UgCSTV for more videos! Usar waypoints en Phantom 2 y Naza by Jose Alberto VIDEO Using DJI Inspire 1 / Phantom 3 with UgCS VIDEO LM Indago in Spilve Airfield VIDEO Phantom 2 Vision + Flying With UgCS VIDEO Videoanleitung: Wie man Mikrokopter mit UgCS verbinet UgCS operates flight of two DJI Phantoms simultaneously Here is a teaser for upcoming UgCS 2.0 ...


SPH Engineering | Entity website

Added DJI NAZA-M V2 Support 22.12 ...


SPH Engineering | Entity website

Multi-operators Because of the modular design of UgCS, it is possible to not only use multiple drones connected to the same computer, but also multiple computers connected to a main ground station. This allows you to have multiple operators of drones, each being monitored by the central ground station giving the directions

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