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spp., foodborne pathogens threatening neonates and infants

Qiming CHEN, Yang ZHU, Zhen QIN, Yongjun QIU, Liming ZHAO

《农业科学与工程前沿（英文）》 2018年第5卷第3期页码 330-339 doi: 10.15302/J-FASE-2018208

摘要：

Cronobacter spp. (formerly Enterobacter sakazakii) are special foodborne pathogens. Cronobacter infection can cause necrotizing enterocolitis, sepsis and meningitis in all age groups, especially neonates and infants, with a high fatality of up to 80%, although the infection is rare. Outbreaks of Cronobacter infection are epidemiologically proven to be associated with contaminated powdered infant formula (PIF). Cronobacter spp. can resist dry environments and survive for a long period in food with low water activity. Therefore, Cronobacter spp. have become serious pathogens of neonates and infants, as well as in the dairy industry. In this review, we present the taxonomy, pathogenesis, resistance, detection and control of Cronobacter spp.

关键词： Cronobacter spp. desiccation resistance pathogen control pathogen detection powdered infant formula

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A CASE FOR ASSESSING ALLOCASUARINA AND CASUARINA SPP.

《农业科学与工程前沿（英文）》 2021年第8卷第4期页码 568-582 doi: 10.15302/J-FASE -2019270

摘要：

Agroecosystems in water-limited contexts— Mediterranean, semi-arid and arid climatic zones—are too frequently degraded systems that will not provide the needed ecosystem services to ensure a future of sustainable agricultural production. The processes that have created this situation continue and are being accelerated by anthropogenic climate change. Increasing arboreal vegetation in these areas through agroforestry is an important strategy to conserve and improve their agroecosystems. Actinorhizal trees and shrubs in the Casurinaceae have a unique set of adaptations for heat and water stress, and/or infertile to hostile soils. Central Anatolia, Turkey is particularly at risk of increasing aridity and further degradation. Therefore, species of Allocasuarina and Casuarina have been evaluated for their potential use in agroecosystem improvement in semi-arid areas with a focus on Central Anatolia. Based on a semiquantitative environmental tolerance index and reported plant stature, eight species were identified as being of high (A. verticillata and C. pauper) to moderate (A. acutivalvis, A. decaisneana, A. dielsiana, A. huegeliana, C. cristata and C. obesa) priority for assessment, with none of these species having been adequately evaluated for agroforestry deployment in semi-arid agroecosystems in any context.

关键词： actinorrhizal trees / agroforestry / climate change / ecosystem restoration

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克罗诺杆菌的食品安全风险及危害因子 Review

凌娜, 蒋秀婷, Stephen Forsythe, 张丹凤, 沈益忠, 丁郁, 王涓, 张菊梅, 吴清平, 叶应旺

《工程（英文）》 2022年第12卷第5期页码 129-139 doi: 10.1016/j.eng.2021.03.021

摘要：

克罗诺杆菌（Cronobacter spp.）是一种革兰氏阴性条件致病菌，可导致新生儿与婴幼儿患脑膜炎、败血症以及坏死性小肠结肠炎等疾病目前，Cronobacter spp. 对婴幼儿的高毒力已经引起了全世界的关注。本文分析了Cronobacter spp.在重要食品中的流行情况，回顾了该菌在胁迫环境下的应答机制及其致病机制等，并强调了Cronobacter spp. 对食品安全的重要性，以及相关控制手段、临床治疗方案制定的意义。

关键词：克罗诺杆菌食品污染致病机理毒力因子胁迫应答

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Repeats in the transcribed regions: comprehensive characterization and comparison of

Manosh Kumar BISWAS, Christoph MAYER, Xiuxin DENG

《农业科学与工程前沿（英文）》 2017年第4卷第4期页码 421-432 doi: 10.15302/J-FASE-2017160

摘要： A large number of expressed sequences tags are available for spp., which provides an opportunity to understand genomic organization of the transcribed regions. Here, we report a detailed analysis of repetitive elements including tandem repeats (TRs) and transposable elements (TEs) in the transcribed region of the spp. On average, 22% of the expressed sequence tags (ESTs) contain TRs. The relative density of TR classes is highly taxon-specific. For instance, has a high relative density of mononucleotide repeats, whereas dinucleotide repeats are rare. The proportions of 2–6, 7–30 and 31–50 bp repeats were almost identical in all studied species except for and . We found that<1% of the citrus ESTs have a similarity with transposable elements. Transcriptional activity of transposable element families varied even within the same class of elements. A high proportion of transcriptional activity was observed for -like TEs compare to other TE classes. While TEs are relatively rare, TRs are abundant elements in ESTs of citrus. The high proportion of TRs that have a unit size longer than 6 bp raises the question about a possible functional or evolutionary role of these elements.

关键词： Citrus spp. tandem repeats transcribed region transposable elements

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Identification and ecotoxicity assessment of intermediates generated during the degradation of clofibric acid by advanced oxidation processes

Wenzhen LI, Yu DING, Qian SUI, Shuguang LU, Zhaofu QIU, Kuangfei LIN

《环境科学与工程前沿（英文）》 2012年第6卷第4期页码 445-454 doi: 10.1007/s11783-012-0419-6

摘要： The aim of this study was to identify the intermediates in clofibric acid degradation under various advanced oxidation processes, namely ultraviolet (UV), UV/H O , vacuum ultraviolet (VUV), VUV/H O , and solar/TiO processes, as well as to assess the toxicity of these intermediates. Eleven intermediates have been detected by gas chromatography-mass spectrometer, most of which were reported for the first time to our best knowledge. Combining the evolution of the dissolved organic carbon, Cl and specific ultraviolet absorption at 254 nm, it could be deduced that cleavage of aromatic ring followed by dechlorination was the mechanism in solar/TiO process, while dechlorination happened first and accumulation of aromatic intermediates occurred in the other processes. Different transformation pathways were proposed for UV-, VUV-assisted and solar/TiO processes, respectively. The acute toxicity was evaluated by means of T spp. bioassay. It was believed that aromatic intermediates increased the toxicity and the ring-opening pathway in solar/TiO process could relieve the toxicity.

关键词： clofibric acid advanced oxidation processes intermediates toxicity Photobacterium phosphoreum T₃ spp.

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阪崎克罗诺杆菌生物膜形成机制及其在食品工业中的控制策略研究 Review

凌娜, Stephen Forsythe, 吴清平, 丁郁, 张菊梅, 曾海燕

《工程（英文）》 2020年第6卷第4期页码 393-405 doi: 10.1016/j.eng.2020.02.007

摘要：

阪崎克罗诺杆菌（Cronobacter sakazakii）是一种食源性条件致病菌，可引起坏死性肠炎、脑膜炎和婴儿败血症等危及生命的侵袭性疾病。

关键词：生物膜控制阪崎克罗诺杆菌形成去除

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Efficient regeneration system applicable to five

Juhua LIU,Peiguang SUN,Jing ZHANG,Jiashui WANG,Jianbin ZHANG,Jingyi WANG,Caihong JIA,Pengzhao GAO,Biyu XU,Zhiqiang JIN

《农业科学与工程前沿（英文）》 2016年第3卷第4期页码 330-334 doi: 10.15302/J-FASE-2016118

摘要： Banana ( spp.) is an important staple food, economic crop, and nutritional fruit worldwide. Hybridization is seriously hampered by the long generation time, polyploidy, and sterility of most cultivars. Establishment of an efficient regeneration and transformation system for banana is critical for their genetic improvement. An efficient and reproducible transformation system for banana using direct organogenesis was developed. Media containing benzylaminopurine (BA) combined with one of four other growth regulators was evaluated for the regeneration efficiency of five cultivars and the ability to induce/support development of new banana shoots. The result indicated that the greatest number of shoots per explant for all five cultivars was obtained using MS medium supplemented with 8.9 mmol·L BA and 9.1 mmol·L thidiazuron (TDZ). In 240–270 d, one immature male flower could regenerate between 380 and 456, 310–372, 200–240, 130–156, and 100–130 well-developed shoots for Gongjiao, Red banana, Rose banana, Baxi, and Xinglongnaijiao, respectively. Such a system will facilitate molecular breeding and functional genomics of banana.

关键词： banana (Musa spp) system regeneration

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论中国海岸带大米草生态工程效益与“生态入侵”

唐廷贵,张万钧

《中国工程科学》 2003年第5卷第3期页码 15-20

摘要：

1963年以来，我国先后从国外引进3种大米草，分布在18000 km海岸带上，经过近40年的引种、驯化和栽培，种植面积已达到36000 hm²。实践证明大米草和互花米草适应于中国海岸带自然环境而正常生长发育，具有明显的促淤造陆、保滩护岸，环境保护等生态功能，并有显著的经济效益，是一种改造滩涂的优良植物，也是一种盐渍土裸地植物群落形成的先锋植物，已作为一个外来种被列入《中国植物志》、《中国高等植物图鉴》和各种地方植物志中。文章认为应客观地评估大米草的功与过。大米草和互花米草繁殖较快的原因是由于富营养化的结果，然而对环境、种群和人并未构成侵害行为，在北方海岸带区域尤未发现任何异常现象，不可认定大米草和互花米草是属于有害的生态入侵种。

关键词：海岸带大米草生态工程促淤造陆保滩护岸