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Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Regulates Sugar Partitioning required for Rice Pollen Development

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Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Reg...

2009整合植物生物学研讨会

作者： Hui Zhang~(1*),Wanqi Liang~(1*),Xijia Yang~1,Ning Jiang~2,Hong Ma~(3,4) and Dabing Zhang~(1**) 1 School of life Science and Biotechnology,Shanghai Jiaotong university,Shanghai 200240,China 2 department of Horticulture,Michigan state university,East Lansing,Michigan 48824,usa.3 state Key Laboratory of Genetic Engineering,Institute of Plant biology,Center for Evolutionary biology,School of life sciences,Fudan university,Shanghai 200433 institutes of Biomedical sciences, Fudan university,Shanghai 200032,China 4 department of biology,the huck institutes of the life sciences,the pennsylvania state university, university park,pennsylvania 16082,usa.

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Double-stranded DNA breaks and gene functions in recombination and meiosis

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Cell Research 2006年第5期16卷 402-412页

作者： Wuxing Li~1 Hong Ma~1 ~1The department of biology,The Intercollege Graduate Degree Program in Plant Physiology,the huck institutes of the life sciences,the pennsylvania state university,university park,PA 16802,usa The department of biology The Intercollege Graduate Degree Program in Plant Physiology The Huck Institutes of the Life Sciences The Pennsylvania State University University Park USA

Meiotic prophase Ⅰ is a long and complex *** recombination is an important process that occursbetween homologous chromosomes during meiotic prophase Ⅰ.Formation of chiasmata,which hold homologous chro-mosomes together until the metaphase Ⅰ to anaphase Ⅰ transition,is critical for proper chromosome *** have suggested that the SPO 11 proteins have conserved functions in a number of organisms in generating sites ofdouble-stranded DNA breaks (DSBs) that are thought to be the starting points of homologous *** these sites of DSBs requires the function of RecA homologs,such as RAD51,DMC 1,and others,as suggested bymutant studies;thus *** to repair these meiotic DSBs results in abnormal chromosomal alternations,leading todisrupted *** discoveries on the functions of these RecA homologs have improved the understanding of themechanisms underlying meiotic homologous recombination.

关键词： meiosis homologous recombination double-stranded DNA breaks SPO11 RAD51 DMC1

Proteomic identification of potential target proteins regulated by an ASK1-mediated proteolysis pathway

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Cell Research 2006年第5期16卷 489-498页

作者： Kaiming Cao state Key Laboratory of Genetic Engineering department of Biochemistry and Molecular biology School of life sciences Fudan university Shanghai 200433 China

The ASK1 (ARABIDOPSIS SKP1-LIKE) protein is a critical component of the SCF (Skpl-Cullin-F box protein)ubiquitin ligase complexes that recruit target proteins for degradation by the 26S *** investigate proteinsthat are affected by the ASK1-mediated proteolysis pathway in Arabidopsis flowers,we compared the proteomes of theArabidopsis wild type and ask1 mutant flower buds using two-dimensional electrophoresis (2-DE).Ten protein spots withhigher or lower abundance in the ask1 mutant flowers compared to wild type flowers were excised and subjected to furthermass spectrometry (MS) *** results showed that they were proteins involved in photomorphogenesis,circadianoscillation,post-translation process,stress-responses and cell expansion or elongation,suggesting that those processeswere affected in the ask1 *** transcript levels of these genes were also compared based on the Affymetrix genechip microarray *** significant difference was observed for most of the genes,suggesting that the proteins withelevated levels of accumulation in the ask1 mutant could be candidate targets regulated by an ASKl-mediated *** results help to elucidate the pleiotropic functions of ASK1 in Arabidopsis developmental processes andalso demonstrate the importance and necessity of studying protein levels with respect to gene functions.

关键词： ASK1 two-dimensional polyacrylamide gel electrophoresis mass spectrometry proteolysis

The Ray Wu Society for life sciences

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Chinese Science Bulletin 2003年第8期48卷 839-840页

作者： MA Hong department of biology and The huck Institute for life sciences, the pennsylvania state university, 315 Wartik Laboratory, university park, PA 16802, usa.(e-mail: Hxm16@psu.edu) Penn state Univ Dept Biol Wartik Lab 315 University Pk PA 16802 USA Penn state Univ Huck Inst Life Sci Wartik Lab 315 University Pk PA 16802 USA

The Ray Wu Society for life sciences (RWS) is a non-profit professional society of Chinese-American and Chinese life scientists with the goal to promote scientific communication among the scientists between usa.and China and the life science research in China. The members of the RWS, now numbered more than 300, are a group of elite biologists who have reached the level of assistant professor or equivalent in their careers and are experts of their respective fields including molecular biology and genetics, cell and developmental biology, me- dicine, pharmacology, plant biology, and biotechnology. RWS was founded in early 1998 by a group of life scientists who have come from China during the last 22 years. With the encouragement of Dr. Chris Tan, the Director of the Molecular biology Institute in Singapore, who proposed to set up a fund in the name of Prof. Ray Wu of Cornell university to recognize his contribution to the academic exchange between China and the usa. A quick positive response was reflected from American Chinese scholars with a further proposal of forming a professional society. This initiative spread rapidly and widely throughout the existing networks of Chinese life-science professionals.

关键词：生命科学中国美国学术交流科学研究

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How to build a functional gabaergic synapses?

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How to build a functional gabaergic synapses?

中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： Gong CHEN department of biology,The huck institutes of life sciences,the pennsylvania state university,university park,PA 16802,usa

GABA is the predominant inhibitory neurotransmitter in the adult *** of GABAergic neurotransmission may be involved in serious neurological disorders,including epilepsy,anxiety,depression,and schizophrenia. Despite the vital function of GABA in the brain,the molecular mechanism of GABAergic synapse formation is still largely *** have employed primary neuronal cultures to study the presynaptic and postsynaptic differentiation during GABAergic *** found that GABAergic postsynaptic assembly is a very rapid process,much faster than its counterpart presynaptic assembly in cultured embryonic *** understand why it is so rapidly assembled,we used heterologous expression system HEK293 cells to study the essential molecular composition of GABAergic postsynaptic *** demonstrate that besides GABAA receptors,which is necessary to detect GABA transmitter,the only molecule needed is a cell adhesion molecule neuroligin-2 to build a fully functional GABAergic postsynaptic apparatus. Furthermore,the delta subunit-containing GABAA receptors,which are usually expressed in extrasynaptic membranes in neurons,are also excluded from the molecularly reconstituted GABAergic synapses formed on HEK293 ***,we have built an efficient system that will allow precise dissection of the molecular mechanisms of GABAergic synapse assembly.

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Plant fertility defects induced by the enhanced expression of microRNA167

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Cell Research 2006年第5期16卷 457-465页

作者： Peng Ru~1 Lin Xu~1 Hong Ma~(2,3) Hai Huang~(1,2) ~1National Laboratory of Plant Molecular Genetics,Shanghai Institute of Plant Physiology and Ecology,Shanghai Institute for Biological sciences,300 Fenglin Road,Shanghai 200032,China ~2SIBS-SJTU-PSU Joint Center for life sciences,Shanghai Institute of Plant Physiology and Ecologgy,Shanghai Institute for Biological sciences,300 Fenglin Road,Shanghai 200032,China ~3department of biology and the huck Institute for the life sciences,the pennsylvania state university,university park,PA 16802,usa National Laboratory of Plant Molecular Genetics Shanghai Institute of Plant Physiology and Ecology Shanghai Institute for Biological Sciences Shanghai China SIBS-SJTU-PSU Joint Center for life sciences Shanghai Institute of Plant Physiology and Ecology Shanghai Institute for Biological Sciences Shanghai China department of biology and the huck Institute for the life sciences The Pennsylvania State University University Park USA

The plant hormone auxin plays a critical role in regulating plant growth and *** advances havebeen made in the understanding of auxin response pathways,primarily by the characterization of auxin response mu-tants in *** addition,microRNAs (miRNAs) have been shown to be critical regulators of genes importantfor normal plant development and ***,little is known about possible interactions between miRNAsand hormonal signaling during norlnal *** we show that an Arabidopsis microRNA,miR167,whichhas a complementary sequence to a portion of the A UXIN RESPONSE FACTOR6 (ARF6) and ARF8 mRNAs,can causetranscript degradation for ARFS,but not for *** report phenotypic characterizations of35S::MIR167b transgeniclines,and show that severe 35S::MIR167b transgenic lines had phenotypes similar to those of an arf6 arf8 double *** transgenic phenotypes suggest that miR167 may repress ARF6 at the level of *** demonstrate that thetransgenic plants are defective in all four whorls of floral *** the transgenic flowers,filaments were abnormallyshort,anthers could not properly release pollen,and pollen grains did not *** results provide an importantlink between the miRNA-mediated regulatory pathway of gene expression and the auxin signaling network promotingplant reproductive development.

关键词： Arabidopsis auxin response factor microRNA167 floral organ pollen germination

Receptor-like Kinase and Other Signaling Molecules in Controlling Early Anther Cell Division and Differentiation

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Receptor-like Kinase and Other Signaling Molecules in Contro...

2009整合植物生物学研讨会

作者： Hong Ma~* state Key Laboratory of Genetic Engineering and Institute of Plant biology,Center for Evolutionary biology,School of life sciences,Fudan university,Shanghai 200433,China institutes of Biomedical sciences,Fudan university,Shanghai 200032,China department of biology and the huck institutes of the life sciences,the pennsylvania state university,university park,PA16802 usa.

Anther development is crucial for plant reproductive success and its understanding can contribute to better plant breeding *** early anther development,several somatic cell layers and meiocytes are formed by successive rounds of cell division and associated cell *** is clear that various cell types need to be coordinated,but

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Analysis of the Transcriptional Networks for Arabidopsis Pollen Development

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Analysis of the Transcriptional Networks for Arabidopsis Pol...

中国植物生理学会第十次会员代表大会暨全国学术年会

作者： Hong Mastate Key Laboratory of Genetic Engineering and Institute of Plant biology, Center for Evolutionary biology, School of life sciences, Fudan university, Shanghai, China 200433 institutes of Biomedical sciences, Fudan university, Shanghai, China 200032 department of biology and the huck institutes of the life sciences, the pennsylvania state university, university park, PA 16802

＜正＞Pollen development occurs in the male organ anther, which has both sporogenous （the germ-line） and somatic

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Use of highly conserved nuclear genes for molecular systematics:an illustration with RAD51 homologs and cohesins

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Use of highly conserved nuclear genes for molecular systemat...

生命之树国际学术研讨会

作者： Hong Ma Zhenguo Lin Xiaofan Zhou and Alexandra Surcel department of biology and the Institute of Molecular Evolutionary Genetics the huck institutes of the life sciences The Integrative Bioscience Graduate Program the pennsylvania state university university park PA 16802 usa

＜正＞Understanding the evolutionary relationships between organisms is a cental objective of the Tree of life *** use of nuclear genes to invetisgate organismal relationships has been hampered by the wide-spread and frequent gene duplications found in many *** have found that genes controlling processes that are conserved among eukaryotes,even between prokaryotes and eukaryotes,tend to retain

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