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AtbHLH29 of Arabidopsis thaliana is a functional ortholog of tomato FER involved in controlling iron acquisition in strategy I plants

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Cell Research 2005年第8期15卷 613-621页

作者： You Xi YUAN1,2, Juan ZHANG1,2, Dao Wen WANG1, Hong Qing LING1,* 1The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, chinese academy of sciences, Datun Road, Chaoyang District, Beijing 100101, china 2graduate school of the chinese academy of sciences, Yuquan Road, Shijingshan District, Beijing 100039, china TheStateKeyLaboratoryofPlantCellandChromosomeEngineering InstituteofGeneticsandDevelopmentalBiologyChines

AtbHLH29 of Arabidopsis, encoding a bHLH protein, reveals a high similarity to the tomato FER which is proposed as a transcriptional regulator involved in controlling the iron deficiency responses and the iron uptake in tomato. For identification of its biological functions, AtbHLH29 was introduced into the genome of the tomato FER mutant T3238fer mediated by Agrobacterium tumefaciencs. Transgenic plants were regenerated and the stable integration of AtbHLH29 into their genomes was confirmed by Southern hybridization. Molecular analysis demonstrated that expression of the exogenous AtbHLH29 of Arabidopsis in roots of the FER mutant T3238fer enabled to complement the defect functions of FER. The transgenic plants regained the ability to activate the whole iron deficiency responses and showed normal growth as the wild type under iron-limiting stress. Our transformation data demonstrate that AtbHLH29 is a functional ortholog of the tomato FER and can completely replace FER in controlling the effective iron acquisition in tomato. Except of iron, FER protein was directly or indirectly involved in manganese homeostasis due to that loss functions of FER in T3238fer resulted in strong reduction of Mn content in leaves and the defect function on Mn accumulation in leaves was complemented by expression of AtbHLH29 in the transgenic plants. Identification of the similar biological functions of FER and AtbHLH29, which isolated from two systematically wide-diverged “strategy I” plants, suggests that FER might be a universal gene presented in all strategy I plants in controlling effective iron acquisition system in roots.

关键词： tomato AtbHLH29 iron uptake Arabidopsis FER plant nutrition.

OsWRKY03, a rice transcriptional activator that functions in defense signaling pathway upstream of OsNPR1

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Cell Research 2005年第8期15卷 593-603页

作者： Xiao Qiang LIU1,2, Xian Quan BAI1,2, Qian QIAN3, Xiu Jie WANG1, Ming Sheng CHEN1, Cheng Cai CHU1,* 1National Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, chinese academy of sciences, Beijing 100101, china 2graduate school of the chinese academy of sciences, Yuquan Road, Beijing 100039, china 3china National Rice Research Institute, chinese academy of Agricultural sciences, Hangzhou 310006, china NationalKeyLaboratoryofPlantGenomics InstituteofGeneticsandDevelopmentalBiologyChineseAcademyofSciencesBei

WRKY family proteins are a class of plant specific transcription factors that involve in many stress response pathways. It has been shown that one Arabidopsis WRKY protein, AtWRKY29/22, is activated by MAP kinase signaling cascade and confers resistance to both bacterial and fungal pathogens. However, little is known about the biological roles of WRKY proteins in rice. In this study, we investigated the expression patterns of rice AtWRKY29/22 homolog, OsWRKY03, under different conditions, and also its possible role involved in plant defense. Our results showed that OsWRKY03 was up-regulated by several defense signaling molecules or different treatments. Further analysis revealed that the expres- sion of OsWRKY03 was light dependent. Transcriptional activation activity of OsWRKY03 was also demonstrated by yeast functional assay. Transient expression of OsWRKY03-GFP fusion protein in onion epidermis cells showed that OsWRKY03 was a nuclear localized protein. OsNPR1 as well as several other pathogenesis-related genes, such as OsPR1b, phenylalanine ammonia-lyase (ZB8) and peroxidase (POX22.3), were induced in OsWRKY03-overexpressing transgenic plants. These results indicated that OsWRKY03 is located upstream of OsNPR1 as a transcriptional activator in salicylic acid (SA)-dependent or jasmonic acid (JA)-dependent defense signaling cascades.

关键词： defense response OsWRKY03 transcription factor rice.

Envelope Simulation by MATLAB-Compatible Models of a SAR system

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Envelope Simulation by MATLAB-Compatible Models of a SAR sys...

2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar（APSAR2009）

作者： Xiaoyang Jiang 1 2 Yunhua Zhang 1 1Center for Space Science and Applied Research CAS Beijing china 100190 2graduate school of the chinese academy of sciences Beijing china 100039

Fast and accurate system behavior simulation is an important technique for developing advanced radar system,Envelope simulation has been proved to be an efficient tool for analyzing and simulating narrow bandwidth system,such as communication system and radar *** this work a common model for the envelope simulation of the transmitter and receiver of a SAR system is *** results validate the reliability and efficiency of the proposed simulation method.

关键词： envelope simulation narrow bandwidth signal radar system SAR

Maximum Principle for the Optimal Control of an Ablation-Transpiration Cooling System with Free Final Time

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Maximum Principle for the Optimal Control of an Ablation-Tra...

第二十四届中国控制会议

作者： Bing Sun~(1,2), Baozhu Guo~1 ~1Institute of Systems Science, academy of Mathematics and System sciences, Academia Sinica, Beijing 100080, china ~2graduate school of the chinese academy of sciences, Beijing 100049, china

＜正＞ This paper is concerned with the optimal control problem of an ablation-transpiration cooling control system with Stefan-Signorini boundary condition. The Pontryagin’s maximum principle of the system is presen... 详细信息

关键词： Ablation-transpiration Stefan-Signorini problem optimal control(OC) Pontryagin’s maximum principle Dubovitskii-Milyutin approach.

Precise Time Measurement System Based on GPIB

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Precise Time Measurement System Based on GPIB

ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Dong Shaowu1 2 Qi Yi1 1National Time Service Center chinese academy of sciences 3 Shuyuan Dong lu Lintong Xi’an 710600 Shaanxi china 2graduate school of the chinese academy of sciences Beijing 100039

In this paper, a precise time measurement system based on GPIB interface was introduced. Personal computer combined with GPIB card is acts as the controller in the precise time comparison system, its

关键词： Time Measurement GPIB.

固体三倍频激光在高压H_2中受激拉曼散射的实验研究

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中国激光 2003年第9期30卷 819-822页

作者：朱晓峥楼祺洪叶震寰董景星魏运荣中国科学院上海光学精密机械研究所中国科学院研究生院北京100039

利用Nd∶YAG激光器的三倍频输出 (35 5nm)在H2 中的受激拉曼散射 (SRS)获得波长在 2 0 4～ 86 7nm范围内的激光输出。当抽运能量为 70mJ时观察到四阶Stokes光和五阶Anti Stokes光 ,其中第一阶Stokes光 (416nm)输出能量为 2 8 7mJ,第二阶... 详细信息

利用Nd∶YAG激光器的三倍频输出 (35 5nm)在H2 中的受激拉曼散射 (SRS)获得波长在 2 0 4～ 86 7nm范围内的激光输出。当抽运能量为 70mJ时观察到四阶Stokes光和五阶Anti Stokes光 ,其中第一阶Stokes光 (416nm)输出能量为 2 8 7mJ,第二阶Stokes光 (5 0 3nm)输出能量为 16mJ,一阶Anti Stokes光 (30 9nm)输出能量为 3mJ。研究了H2 压力和各阶Stokes光能量的关系 ,同时观察到环行光斑和脉宽压缩现象。

关键词：非线性光学受激拉曼散射固体激光四波混频

维普期刊数据库

The General Function Analysis of MTP1 （metal tolerance protein） in Responses to Heavy Metal Pollution in Oryza sativa L.,Nipponbare

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The General Function Analysis of MTP1 （metal tolerance prot...

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： Lianyu Yuan1,2, Mei Zhang1* 1Laboratory of plant epigenetics, South china Botanical Garden, chinese academy of sciences, Xingke Road 723, Tianhe Guangzhou City, Guangdong Province, 510650 china 2graduate school of the chinese academy of sciences, Beijing, 100039 china

＜正＞With the development of industry, heavy metal pollution has become more and more serious in china.

关键词： Cadmium MTP1 rice

Seed Seed Consumption and Caching on three tree species by four sympatric rodent species in a subtropical forest, china

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Seed Seed Consumption and Caching on three tree species by f...

中国动物学会兽类学分会第六届会员代表大会暨学术讨论会

作者： Jinrui Cheng~(1,2) Zhishu XiaoI Zhibin Zhang~1 (~1State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, chinese academy of sciences, Beijing 100080, china, 2graduate school, chinese academy of sciences, Beijing 100039, china)

＜正＞Many studies had been done on fate of one plant seed dispersed by rodents or one rodent species consumed, dispersed and hoarded one or two species of plant seeds. But few of them had studied relationship of several rodents and several plant seed occurring in the same region. In order to make clear the relationship between four sympatrie rodent

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Climate Change from 1960 to 2000 in the Lancang River Valley, china

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Climate Change from 1960 to 2000 in the Lancang River Valley...

全国优秀青年气象科技工作者学术研讨会

作者： He Yunling1, 2 and Zhang Yiping1 (1Xishuangbanna Tropical Botanical Garden, chinese academy of sciences, Kunming 650223, P. R. china 2graduate school of chinese academy of sciences, Beijing 100039, P. R. china)

Archival data of monthly air temperature and precipitation series were used to investigate climate change trends and characteristics during 1960–2000 at 19 stations along Lancang River from the north

关键词： Climate change long-term temperature series regional variation Lancang River valley (Mekong) china