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Search Results: 1 - 10 of 3326 matches for " Zhenbiao Jiao "
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Genetic Relationships of Soft Rot Bacteria Isolated from Konjac in China by Amplified Fragment Length Polymorphism (AFLP) and 16S rDNA Gene Sequences  [PDF]
Jinping Wu, Chaozhu Yang, Zhenbiao Jiao, Zhongli Hu, Zili Ding, Zhengming Qiu
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.67069
Abstract: Twenty-three isolates of soft rot bacteria from konjac corms were examined for their diversity using 16S rDNAs and AFLP technology. Both methods clustered two groups, dependent on their biotype characterization of Pectobacterium carotovora subsp. carotovora (P.c.c) and Pectobacterium chrysanthemi (P.ch), respectively. Of all isolates, 17 (73.9%) belonged to P. ch, indicated as the main pathogenic bacteria of konjac producing areas in China. The genetic variation among isolates from the same biotype was also rich, not consistent with the distances of the geographic sources.
Constitutive and Secretory Expression of the AiiA in Pichia pastoris Inhibits Amorphophallus konjac Soft Rot Disease  [PDF]
Jinping Wu, Zhenbiao Jiao, Fengling Guo, Leifu Chen, Zili Ding, Zhengming Qiu
American Journal of Molecular Biology (AJMB) , 2016, DOI: 10.4236/ajmb.2016.62009
Abstract: Amorphophallus konjac is an important economic crop widely cultivated in Southeast Asia and Africa. However, A. konjac is seriously infected by soft rot pathogen. The endocellular acyl homoserine lactonase (AiiA) which is generated by Bacillus species has inhibitory effect on soft rot pathogen through disrupting the signal molecules (N-acylhomoserine lactones, AHL) of their Quorum Sensing system. The aim of our study is to obtain recombinant yeast which produces AiiA protein. The recombinant yeast Pichia pastoris GS115 was constructed to constitutive expression of the AiiA gene. The results of reverse transcript PCR analysis showed that the AiiA gene was expressed successfully in the yeast. Proteins extracted from YPDS showed the highest inhibition efficacy to E. carotovora compared with the other two mediums (YPD and LB) under tested conditions.
First Report of Marginal Scorch Infecting Indigowoad Root in China  [PDF]
Jinping Wu, Zili Ding, Xiaoyan Liu, Zhenbiao Jiao, Zhengming Qiu, Fengling Guo
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.710132
Abstract: During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. On the basis of morphological features and 18S rDNA sequences, the pathogen was identified as Cladosporium sp. Koch’s postulates were fulfilled by pathogenicity tests on potted indigowoad root seedlings. To our knowledge, this report is the first of marginal scorch on indigowoad root caused by Cladosporium sp. We propose the name “marginal scorch” for the new disease.
Effects of Intercropping on Rhizosphere Soil Bacterial Communities in Amorphophallus konjac  [PDF]
Jinping Wu, Zhenbiao Jiao, Jie Zhou, Wei Zhang, Shengwu Xu, Fengling Guo
Open Journal of Soil Science (OJSS) , 2018, DOI: 10.4236/ojss.2018.89018
Abstract: Soft rot disease causes heavy loss in konjac production every year, which caused by the genus Pectobacterium has been recognized as a major reason why konjac industry has not boomed in worldwide. However, intercropping with economically important trees can effectively control affect soft rot disease epidemics. Consequently, we conducted a rhizosphere bacterial diversity study to assess how intercropping affects soft rot disease using next-generation DNA sequencing. The results demonstrate the Shannon diversity index and Chao 1 index for soil bacteria were relatively steady under intercropping conditions, but changed greatly for the konjac monocrop with the increase in the number of cropping years. Of the 44 bacterial genera with relative abundance ratios of >0.3%, 11 were significantly affected by the duration of continuous cropping and the cultivation mode. Luteolibacter and Bacteroides showed highly significant differences between the monocrop and the intercrop for three continuous years. Pseudomonas was significantly affected by the different cultivation modes, while Myroides was significantly affected by planting age. Intercropping altered the structure and composition of the soil bacterial community, which led to a relative balance of beneficial bacteria, and the relative balance of beneficial bacteria is helpful to reduce the incidence of soft rot.
G Protein Regulation of Plant Hormone Action
Fang BAO,Zhenbiao YANG,

植物学报 , 2003,
Abstract:
Decomposition Of Symplectic Transformation About Symplectic Transvection Over Local Rings
局部环上辛变换关于辛平延的分解

Yan Zhenbiao,
颜振标

系统科学与数学 , 2006,
Abstract: The symplectic transvection of symplectic transformation over local rings is studied. The decomposition of symplectic transformation about symplectic transvection over local rings by theory of defective number and residue number is discussed.
EVIDENCE FOR ORIGIN OF CHINESE POPULATIONS:TIME AND SPACE CHANGES OF CRANIOMETRIC TRAITS
现代中国人起源的实证──颅骨特征的时空变化

Zhang Zhenbiao,
张振标

第四纪研究 , 1999,
Abstract: The purpose of this study is to analyse the bine and space changes of thecraniometric traits from early Homo sapiens to modem man in China. For this study,the author collected 36 groups of human skull distributed to the north and south ofChangjiang River. The cramal specimens range from early Homo sapiens to modernman (including early Homo sapiens, late Homo sapiens, early Neolithic, fare Neolithic,Bronze age and present day). Sixteen items of the cranial measurements were used inthe analysis. The author used the Percent difference of the temporal craniometricchanges to compare and discuss the general trend of the cramal microevolution andthe origin of Chinese populations. The percent differences are used to compare levelsof the cramal changes in each other and are calculated by Frayer's formula (1984),namely subtracting the earner mean from the late mean and dividing by the earliermean. The results are shown in Table 2 to Table 6.According to the results of the analysis and the comparison, the severaldiscussions are as follows.(1) Judging from the comparison of the percentages of the temporal craniometricchanges, it can see that all of the cramal dimensions in the transition from earlyHomo sapiens to modem man, in general decrease gradually with bine except thecramal height (ba-b) and the zygomaxillary angle which increase gradually with bine.These microevolutions may be described in the following way: the cramal form isbasically the tfansition from the dolichocrany and the chamaecrany to the brachycranyand the hypsicrany. The facial form is basically the transition from the euryeny to themesony and the lepteny. The orbital form is the transition from the chamaeconchy tothe hypsiconctiy. The nasal form is basically the transition from chamaerrhiny to themesorrhiny in Neolithic and Bronze age and the leptorrhiny in modem man.To sum up, the temporal changes of the overall cramal morphology from earlyHomo sapiens to modem man tends to the continuous brachycranyzation, whilecraniofacial part is the transition from the robustious type to the gracile type.(2) The temporal changes in the cramal morphology betWeen early Homo sapiensand late Homo sapiens exist markedly the discontininty. In comparison with thetemporal changes of the cramal dimensions from early Homo sapiens to modern man,all of the horizonta dimensions of the craniofasial part in both early Homo sapiensand late Homo sapiens and late Homo sapiens tend to decrease with bine, while theupper facial height the orbital height and the masal height are gradually increase inthe transition from late Homo sap lens to modern man and are gradually decrease inthe trasition from early Homo sapiens to modem man. The most of cranialdimensions in early Homo sapiens even surpass modem man. The comparison of twomicroevolutionary systems reveals that the temporal changes in cramal morphologybetween early Homo sapiens and late Homo sapiens are disconhnuous or abruphybreak. It is may be seen that the skulls in
Limit Cycle Bifurcations in a Class of Cubic System near a Nilpotent Center  [PDF]
Jiao Jiang
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.37115
Abstract: In this paper we deal with a cubic near-Hamiltonian system whose unperturbed system is a simple cubic Hamiltonian system having a nilpotent center. We prove that the system can have 5 limit cycles by using bifurcation theory.
Study of Informative Advertising Competition Model in Duopolistic Market with Relative Profit Object  [PDF]
Jiao Lu
Journal of Service Science and Management (JSSM) , 2017, DOI: 10.4236/jssm.2017.102009
Abstract:
To study how the relative profit object influences duopolistic retailers’ advertising decisions, this paper adds the relative profit object on the Hotelling Model to study its influence on advertising decisions. Through the calculation and analysis of the advertising competition model, we found that the balanced advertising level and product price is positively related to product differentiation level. The relationship between balanced profit and product differentiation level is related to the range of each variable. The balanced product price is positively related to advertising cost, while the balanced advertising level and profit is negatively related to advertising cost. The balanced product price, advertising level and profit are negatively related to relative profit ratio. Commonly, the higher the relative object ratio, the advertising level should be higher. This paper gets the opposite conclusion. Through analysis and discussion, we found that this is mainly influenced by the advertising cost level. As in this paper the advertising cost level is restricted to be high, enterprises will choose to raise price for more profit and lower advertising level to reduce cost while the relative profit ratio increases.
Are Mispricings Long-Lasting or Short-Lived? Evidence from S & P 500 Index ETF Options  [PDF]
Feng Jiao
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.83027
Abstract: A rapidly growing literature has documented evidences suggesting the mispricing of options. Building on recent results of option pricing bounds imposed by stochastic dominance, this paper examines the time-series proprieties of such mispricing. In an application to high-frequency bid/ask quotes of S & P 500 index ETF options, this paper provides evidences that most violations of the stochastic dominance bounds last no more than 10 trading hours. The typical duration of mispricing is even shorter for near to maturity options. The results imply that the observed widespread mispricing in options might be the result of temporary inefficiency (e.g. transaction costs, overreaction, liquidity etc.) rather than a model misspecification, such as estimation biases of the parameters, or an overlooked persistent risk factor.
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