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Search Results: 1 - 10 of 27606 matches for " Zongli Hu "
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Spectral properties of LH2 exhibit very similar even when heterologously express LH2 with β-subunit fusion protein in Rhodobacter sphaeroides  [PDF]
Zhiping Zhao, Xin Nie, Zongli Hu, Guoping Chen, Zaixin Li, Zhi Zhang
Advances in Biological Chemistry (ABC) , 2013, DOI: 10.4236/abc.2013.31013
Abstract:

Interactions between the light-harvesting subunits and the non-covalently bound photopigments attribute considerably to the spectral properties of photosynthetic bacteria light-harvesting complexes. In our previous studies, we have constructed a novel Rhodobacter sphaeroides expression system. In the present study, we focus on the spectral properties of LH2 when heterologously express LH2 with β-subunit- GFP fusion protein in Rb. sphaeroides. Near infra-red spectrum of LH2 remained nearly unchanged as measured by spectroscopy. Fluorescence spectrum suggested that the LH2 with β-subunit-GFP fusion protein complexes still possessed normal activity in energy transfer. However, photopigments contents were significantly decreased to a very low level in the LH2 with β-subunit-GFP fusion protein complexes compared to that of LH2. FT-IR spectra indicated that interactions between photopigments and LH2 α/β- subunits appeared not to be changed. It was concluded that the LH2 spectral properties exhibited very similar even when heterologously expressed LH2 b-subunit fusion protein in Rb. sphaeroides. Our present study may supply a new insight into better understand the interactions between light-harvesting subunits and photopigments and bacterial photosynthesis and promote the development of the novel Rb. sphaeroides expression system.

Function Annotation of an SBP-box Gene in Arabidopsis Based on Analysis of Co-expression Networks and Promoters
Yi Wang,Zongli Hu,Yuxin Yang,Xuqing Chen,Guoping Chen
International Journal of Molecular Sciences , 2009, DOI: 10.3390/ijms10010116
Abstract: The SQUAMOSA PROMOTER BINDING PROTEIN–LIKE (SPL) gene family is an SBP-box transcription family in Arabidopsis. While several physiological responses to SPL genes have been reported, their biological role remains elusive. Here, we use a combined analysis of expression correlation, the interactome, and promoter content to infer the biological role of the SPL genes in Arabidopsis thaliana. Analysis of the SPL-correlated gene network reveals multiple functions for SPL genes. Network analysis shows that SPL genes function by controlling other transcription factor families and have relatives with membrane protein transport activity. The interactome analysis of the correlation genes suggests that SPL genes also take part in metabolism of glucose, inorganic salts, and ATP production. Furthermore, the promoters of the correlated genes contain a core binding cis-element (GTAC). All of these analyses suggest that SPL genes have varied functions in Arabidopsis.
Monitoring the secretion from single cells with temporal and spatial resolution
Weihua Huang,Shen Hu,Daiwen Pang,Zongli Wang,Jieke Cheng
Chinese Science Bulletin , 2000, DOI: 10.1007/BF02909756
Abstract: The secretion from cells plays a significant role in life activites and in the fields of neurobiology, cell biology, clinic, pathology, pharmacology etc. Thus to investigate the secretion at the single cell level with the developing methods is a frontier cross-discipline research activity. The contents, methods and new progress of this research have been reviewed by electrochemical monitoring combined with patch-clamp techniques, fluorescent detection and immunoassay, and the prospects on the frontier of the research area have been discussed.
The Analysis of the Risks Faced by China’s Social Endowment Insurance under the Background of Rapid Aging Population  [PDF]
Ying Zhang, Zongli Qiu
Open Journal of Business and Management (OJBM) , 2015, DOI: 10.4236/ojbm.2015.32018
Abstract: With the increasing aging population, the pressure of social endowment insurance in our country is growing more quickly than ever. Meanwhile, there are some practical problems and shortcomings in the current social endowment insurance system in China. And all this will raise risks in the field of inherent finance, fund investment and operation of the endowment insurance system. At the same time, it will cause new risks in the field of institution and policy. Thus, only by strengthening risk management and actively responding to the risks of social endowment insurance, can the government perfect the social endowment insurance system constantly.
Cultural influence, economic security, and the fertility behavior of the Chinese in Canada
Tang, Zongli
Canadian Studies in Population , 2001,
Abstract: English This study explores interactions of cultural influence and economic insecurity and their effects on the fertility behavior of the Chinese in Canada. The importance of group context on the actions of individuals is measured through data from the PUST of the 1971 and1991 Canadian Censuses. Contextual analysis and random coefficient models are the major statistical tools employed to achieve the above objectives. The Chinese-Canadians are compared to the British-Canadians, who are used as the reference group. The findings suggest that Chinese reproductive norms with pronatalist endowments exert strong influence on the fertility behavior of the Chinese in Canada.This influence effectively counteracts the negative effects of economic insecurity and encourages Chinese immigrants to quickly recover their fertility deficit after the initial immigration stage. The effects of the origin culture on fertility diminish with increasing exposure to the host society.However, even among the native-born or Canadian-born Chinese, the influence of Chinese reproductive norms is still present though not as strong as among the foreign-born Chinese. French Cette étude explore les interactions de l'influence culturelle et de l'insécuritééconomique et leurs effets sur le comportement procréateur des Chinois auCanada. L'importance d'un contexte de groupe sur les actions des individus estmesurée au moyen de données provenant de la BEGD (bande-échantillon àgrande diffusion) des recensements canadiens de 1971 et 1991. L'analysecontextuelle et les coefficients de modèles au hasard constituent les principauxoutils statistiques employés pour atteindre les objectifs susmentionnés. Les Sino-Canadiens sont comparés aux habitants de la Colombie-Britannique qui serventde groupe témoin. Les conclusions indiquent que les normes de reproduction àaction nataliste exercent une forte influence sur le comportement procréateur desChinois au Canada. Cette influence contrebalance efficacement les effetsnégatifs de l'insécurité économique et encourage les immigrants chinois à seremettre rapidement de leur manque de fécondité après la première étape del'immigration. Les effets de la culture d'origine sur la fécondité diminuent avecl'exposition à la nouvelle société h te. Cependant, même parmi les Sino-Canadiens nés en Chine ou nés au Canada, l'influence des normes dereproduction chinoises demeure présente quoique moins forte que chez lesChinois nés à l'étranger.
A New Approach in Measuring Local Migration and Population
Tang, Zongli
Canadian Studies in Population , 2008,
Abstract: English This paper presents a new model for measuring local migration and population and report results of a promising pilot application to Massachusetts. This model operationalizes Ravenstein’s classic “push-pull” paradigm, which posits that local migration is determined by the area’s relative attractiveness or a compound function of distinct factors that push migrants out of the area or pull them in.The attraction factors and changes are measured using varied data sources,including decennial census migration flow data and data on group quarters and school enrollments. This model yields timely population estimates with accuracy superior to the corresponding estimates based on the Census Bureau’s methodology. Such results warrant further applications to test and refine this promising approach. French Cet article introduit un nouveau modèle pour mesurer la migration locale de lapopulation et pour présenter les résultats d’un projet pilote prometteur auMassachusetts. Ce modèle opérationalise le paradigme classique de push et pullde Ravenstein, qui postule que la migration locale est déterminée par l’attraitrelatif d’une région ou par une composante de plusieurs facteurs distincts quipousse les migrant hors de leur région ou les attire vers une autre. Leschangements et les facteurs d’attrait sont mesurés à l’aide de plusieurs sourcesde données, tel que les données sur la mobilité des migrations du recensementdécennal et les données sur les logements de groupe et les inscriptions scolaires.Ce modèle offre des estimations propices qui font preuve d’un niveaud’exactitude supérieur aux estimations correspondantes basées sur laméthodologie du Census Bureau. De tels résultats démontrent l’importanced’applications futures pour tester et raffiner cette approche encourageante.
The Great Migration: Rural-Urban Migration in China and Indonesia
Zongli Tang
Canadian Studies in Population , 2012,
Abstract:
Investigation of structural change of purple membrane in storage by transmission electron microscope and atomic force microscope
Li Xiaodong,Li Zongli,Yan Jiusheng,Li Hui,Han Baoshan,Hu Kunsheng,Wang Aojin
Chinese Science Bulletin , 2001, DOI: 10.1007/BF02900667
Abstract: The structural change of purple membrane during storage has been investigated by means of transmis sion electron microscope and atomic force microscope. It is found that many liposomes have spontaneously evolved from the purple membrane sheets isolated three years ago. The membrane proteins on the liposomes, bacteriorhodopsin, are still presented as trimers in 2-D hexagonal structure, which is the same as that in natural cell membrane. However, the cytoplasmic surface of purple membrane faced outside on the liposomes.
Monitoring the secretion from single cells with temporal and spatial resolution

HUANG Weihua,HU Shen,PANG Daiwen,WANG Zongli,CHENG Jieke,

科学通报(英文版) , 2000,
Abstract: The secretion from cells plays a significant role in life activites and in the fields of neurobiology, cell biology, clinic, pathology, pharmacology etc. Thus to investigate the secretion at the single cell level with the developing methods is a frontier cross-discipline research activity. The contents, methods and new progress of this research have been reviewed by electrochemical monitoring combined with patch-clamp techniques, fluorescent detection and immunoassay, and the prospects on the frontier of the research area have been discussed.
A Non-Climacteric Fruit Gene CaMADS-RIN Regulates Fruit Ripening and Ethylene Biosynthesis in Climacteric Fruit
Tingting Dong, Guoping Chen, Shibing Tian, Qiaoli Xie, Wencheng Yin, Yanjie Zhang, Zongli Hu
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0095559
Abstract: MADS-box genes have been reported to play a major role in the molecular circuit of developmental regulation. Especially, SEPALLATA (SEP) group genes play a central role in the developmental regulation of ripening in both climacteric and non-climacteric fruits. However, the mechanisms underlying the regulation of SEP genes to non-climacteric fruits ripening are still unclear. Here a SEP gene of pepper, CaMADS-RIN, has been cloned and exhibited elevated expression at the onset of ripening of pepper. To further explore the function of CaMADS-RIN, an overexpressed construct was created and transformed into ripening inhibitor (rin) mutant tomato plants. Broad ripening phenotypes were observed in CaMADS-RIN overexpressed rin fruits. The accumulation of carotenoid and expression of PDS and ZDS were enhanced in overexpressed fruits compared with rin mutant. The transcripts of cell wall metabolism genes (PG, EXP1 and TBG4) and lipoxygenase genes (TomloxB and TomloxC) accumulated more abundant compared to rin mutant. Besides, both ethylene-dependent genes including ACS2, ACO1, E4 and E8 and ethylene-independent genes such as HDC and Nor were also up-regulated in transgenic fruits at different levels. Moreover, transgenic fruits showed approximately 1–3 times increase in ethylene production compared with rin mutant fruits. Yeast two-hybrid screen results indicated that CaMADS-RIN could interact with TAGL1, FUL1 and itself respectively as SlMADS-RIN did in vitro. These results suggest that CaMADS-RIN affects fruit ripening of tomato both in ethylene-dependent and ethylene-independent aspects, which will provide a set of significant data to explore the role of SEP genes in ripening of non-climacteric fruits.
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