检索范围:
排序: 展示方式:
Breeding for the resistance to
Hongxiang MA, Xu ZHANG, Jinbao YAO, Shunhe CHENG
《农业科学与工程前沿(英文)》 2019年 第6卷 第3期 页码 251-264 doi: 10.15302/J-FASE-2019262
With the changes of climate and cultivation systems, the head blight (FHB) epidemic area in China has extended since 2000 from the reaches of the Yangtze River to the north and west winter wheat region. Breeding for FHB resistance in wheat is an effective way to control the disease. Chinese wheat breeders commenced research on FHB in the 1950s. Sumai 3, Ning 7840, Yangmai 158, Ningmai 9 and other cultivars with improved FHB resistance were developed through standard breeding methods and widely applied in production or breeding programs. In addition to intervarietal crosses, alien germplasm was used to improve FHB resistance of wheat. Addition, substitution and translocation lines with alien chromosomes or chromosome fragments were created to enhance FHB resistance. Somaclonal variation was also used to develop a FHB resistant cv. Shengxuan 3 and other cultivars with moderate resistance to FHB were released by such methods. QTL (quantitative trait loci) for FHB resistance were characterized in cultivars originating from China. The major QTL, , was identified on chromosome 3BS in Sumai 3, Ning 894037, Wangshuibai and other Chinese resistant sources. Diagnostic molecular markers for 1 have been applied in wheat breeding and breeding lines with improved FHB resistance and desirable agronomic traits have been obtained. However, breeding for FHB resistance is a long-term task, new technologies are likely to increase the efficiency of this process and better FHB resistance of new cultivars is expected to be achieved within the next decade.
Identification of molecular markers linked to rice bacterial blight resistance genes from
Jing WANG,Chen CHENG,Yanru ZHOU,Yong YANG,Qiong MEI,Junmin LI,Ye CHENG,Chengqi YAN,Jianping CHEN
《农业科学与工程前沿(英文)》 2015年 第2卷 第3期 页码 260-265 doi: 10.15302/J-FASE-2015070
关键词: Oryza meyeriana bacterial blight resistance gene genetic population linkage molecular marker
Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK
《农业科学与工程前沿(英文)》 2018年 第5卷 第4期 页码 462-468 doi: 10.15302/J-FASE-2018239
Late blight is one of the most important potato diseases. To minimize yield losses, various protective measures are used including fungicide application. Active use of fungicides results in a contamination of the environment. Therefore, crop protection strategies optimizing the number of treatments are of great interest. Using information about late blight development in an experimental potato field recorded over 30 seasons, a simulator to forecast yield losses caused by the disease was developed based on the number of 5-d periods favorable for reinfection of plants during a vegetation season. The simulator was successfully verified using independent data on the disease development from nine unprotected potato fields in the Netherlands and Germany. The average difference between the calculated and real yield losses did not exceed 5%. Using the simulator and weather data for a period of 2007-2017, yield losses were calculated for several areas of the Bryansk, Tambov, and Orenburg Regions of Russia. The results revealed differences in disease development between these regions and may be used to develop recommendations for a frequency of fungicide applications according to the regional risk of epidemics, leading to a significant reduction in fungicide use.
关键词: potato late blight Phytophthora infestans yield losses retrospective analysis mathematical model
Expression pattern and regulation of head-to-head genes
Xinxing CUI,Chunhong YANG,Li KANG,Guiyu ZHU,Qingqing WEI,Yunliang JIANG
《农业科学与工程前沿(英文)》 2014年 第1卷 第2期 页码 130-136 doi: 10.15302/J-FASE-2014013
Basic consideration of research strategies for head and neck cancer
null
《医学前沿(英文)》 2012年 第6卷 第4期 页码 339-353 doi: 10.1007/s11684-012-0213-7
Head and neck cancer (HNC) consists of a group of malignancies affecting closely related anatomical regions of the upper aerodigestive tract (UADT), including the oral cavity, salivary glands, upper and lower jaw bones and facial skin; the nasal cavity, paranasal sinuses, pharynx, larynx and thyroid gland (although the latter is often excluded and considered as part of endocrine neoplasms). Of these, 90% of HNCs are histologically squamous cell carcinomas originating from the mucosal lining. These malignancies are strongly associated with certain environmental and life-style risk factors, principally tobacco in both smoked and smokeless forms, excessive alcohol consumption, diets poor in antioxidants and essential micronutrients, UV light, chemicals used in certain workplaces, and viruses, principally certain strains of human papillomavirus (HPV) and Epstein-Barr virus (EBV). These cancers are frequently aggressive in their biological behaviour with local invasion and metastasis to lymph nodes in the neck. Since most patients are already at late stages of disease at the time of diagnosis, the desirable practice of early diagnosis (first sign of the malignant lesion at an initial stage ) and early treatment, a critical priority to save lives and retain quality of life, is difficult to implement. Thus, primary prevention has been set as a key goal. This article aims to reinforce the basic knowledge of aetiology, key risk factors related to the development of head and neck cancer, basic features of clinical appearance of this group of cancers, and strategies for prevention and early detection. We also suggest basic research strategies on the basis of current knowledge, which should ultimately lead to the improvement of clinical management.
关键词: clinical management head and neck cancer prevention and early detection research strategies risk factors
《结构与土木工程前沿(英文)》 页码 1163-1187 doi: 10.1007/s11709-023-0987-5
关键词: cast-in anchor concrete cone capacity geopolymer concrete head size surface crack anchor profile
null
《医学前沿(英文)》 2017年 第11卷 第2期 页码 239-246 doi: 10.1007/s11684-017-0509-8
Patients undergoing major oncological surgery for head and neck cancer (SHNC) have a particularly high risk of nosocomial infections. We aimed to identify risk factors for ventilator-associated pneumonia (VAP) in patients undergoing SHNC. The study included 465 patients who underwent SHNC between June 2011 and June 2014. The rate of VAP, risk factors for VAP, and biological aspects of VAP were retrospectively evaluated. The incidence of VAP was 19.6% (n=95) in patients who required more than 48 h of mechanical ventilation. Staphylococcus (37.7%), Enterobacteriaceae (32.1%), Pseudomonas(20.8%), and Haemophilus (16.9%) were the major bacterial species that caused VAP. The independent risk factors for VAP were advanced age, current smoking status, chronic obstructive pulmonary disease, and a higher simplified acute physiology score system II upon admission. Tracheostomy was an independent protective factor for VAP. The median length of stay in the ICU for patients who did or did not develop VAP was 8.0 and 6.5 days, respectively (P=0.006). Mortality among patients who did or did not develop VAP was 16.8% and 8.4%, respectively (P<0.001). The potential economic impact of VAP was high because of the significantly extended duration of ventilation. A predictive regression model was developed with a sensitivity of 95.3% and a specificity of 69.4%. VAP is common in patients who are undergoing SHNC and who require more than 48 h of mechanical ventilation. Therefore, innovative preventive measures should be developed and applied in this high-risk population.
关键词: ventilator-associated pneumonia (VAP) pneumonia risk factors surgery for head and neck cancer (SHNC)
Model test study for ice force on the bank-head of the lead-navigating bank
SONG An, SUN Jinliang, LU Hai, WANG Yi′an
《结构与土木工程前沿(英文)》 2007年 第1卷 第2期 页码 222-228 doi: 10.1007/s11709-007-0027-x
关键词: comparison lead-navigating bank vertical bank-head certain Preliminary
Biologically inspired model of path integration based on head direction cells and grid cells
Yang ZHOU,De-wei WU
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 435-448 doi: 10.1631/FITEE.1500364
关键词: Head direction cells (HDCs) Grid cells (GCs) Path integration Bionic navigation
Ultramicrostructure and clinical implications of satellite foci in front of the head of pterygium
LIU Haixia, XIANG Nan, ZHOU Xiongwu, HU Weikun, LI Guigang, ZHANG Hong
《医学前沿(英文)》 2007年 第1卷 第2期 页码 211-214 doi: 10.1007/s11684-007-0040-4
Lin FU, Wu XIONG, Francisco DINI-ANDREOTE, Beibei WANG, Chengyuan TAO, Yunze RUAN, Zongzhuan SHEN, Rong LI, Qirong SHEN
《农业科学与工程前沿(英文)》 2020年 第7卷 第3期 页码 307-316 doi: 10.15302/J-FASE-2020328
Harnessing disease-suppressive microbiomes constitutes a promising strategy for optimizing plant growth. However, relatively little information is available about the relationship between bulk and rhizosphere soil microbiomes. Here, the assembly of banana bulk soil and rhizosphere microbiomes was investigated in a monoculture system consisting of bio-organic (BIO) and organic management practices. Applying BIO practice in newly reclaimed fields resulted in a high-efficiency biocontrol rate, thus providing a promising strategy for pre-control of Fusarium wilt disease. The soil microbiota was further characterized by MiSeq sequencing and quantitative PCR. The results indicate that disease suppression was mediated by the structure of a suppressive rhizosphere microbiome with respect to distinct community composition, diversity and abundance. Overall microbiome suppressiveness was primarily related to a particular set of enriched bacterial taxa affiliated with s, , , , and . Finally, structural equation modeling was used to show that the changes in bulk soil bacterial community determined its induced rhizosphere bacterial community, which serves as an important and direct factor in restraining the pathogen. Collectively, this study provides an integrative approach to disentangle the biological basis of disease-suppressive microbiomes in the context of agricultural practice and soil management.
关键词: agricultural practice bulk soil disease suppression rhizosphere ecology
刘宏民,姚双吉,杨利坡,庞志峰,李双来,刘武斌,闫胜友,褚建东
《中国工程科学》 2006年 第8卷 第11期 页码 80-85
针对唐钢高线吐丝机存在的吐丝质量问题,采用三次样条拟合现场实测数据得到吐丝管曲线方程;根据吐丝管中线材的速度和受力模型,分析线材在吐丝管中的运动状态,研究吐丝管空间曲线对吐丝质量的影响,得到吐丝管空间曲率波动过大和出口速度变化过快是导致吐丝质量不好的主要原因;通过改善吐丝管空间曲线和规范煨管工艺制度,显著改善了甩尾、吐圈摆动等吐丝质量,吐丝管寿命提高了1倍。
标题 作者 时间 类型 操作
Identification of molecular markers linked to rice bacterial blight resistance genes from
Jing WANG,Chen CHENG,Yanru ZHOU,Yong YANG,Qiong MEI,Junmin LI,Ye CHENG,Chengqi YAN,Jianping CHEN
期刊论文
Development and testing of a weather-based model to determine potential yield losses caused by potato late blight
Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK
期刊论文
Expression pattern and regulation of head-to-head genes
Xinxing CUI,Chunhong YANG,Li KANG,Guiyu ZHU,Qingqing WEI,Yunliang JIANG
期刊论文
Influence of surface cracking, anchor head profile, and anchor head size on cast-in headed anchors in
期刊论文
factors for ventilator-associated pneumonia among patients undergoing major oncological surgery for head
null
期刊论文
Model test study for ice force on the bank-head of the lead-navigating bank
SONG An, SUN Jinliang, LU Hai, WANG Yi′an
期刊论文
Biologically inspired model of path integration based on head direction cells and grid cells
Yang ZHOU,De-wei WU
期刊论文
Ultramicrostructure and clinical implications of satellite foci in front of the head of pterygium
LIU Haixia, XIANG Nan, ZHOU Xiongwu, HU Weikun, LI Guigang, ZHANG Hong
期刊论文
Changes in bulk soil affect the disease-suppressive rhizosphere microbiome against Fusarium wilt disease
Lin FU, Wu XIONG, Francisco DINI-ANDREOTE, Beibei WANG, Chengyuan TAO, Yunze RUAN, Zongzhuan SHEN, Rong LI, Qirong SHEN
期刊论文