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LEAFY HEAD2,which encodes a putative RNA-binding protein,regulates shoot development of rice

Cell Research 2006年第3期16卷 267-276页

作者： Guo Sheng Xiong~(1,3) Xing Ming Hu~2 Yong Qing Jiao~1 Yan Chun Yu~1 Cheng Cai Chu~1 Jia Yang Li~1 Qian Qian~2 Yong Hong Wang~11 State key laboratory of Plant Genomics and National center for Plant Gene Research,institute of genetics and developmental biology,chinese academy of sciences,beijing 100101,china 2 State key laboratory of Rice biology,china National Rice Research institute,chinese academy of Agricultural sciences,Hangzhou 310006,china 3 Graduate University of chinese academy of sciences,beijing 100049,china State key laboratory of Plant Genomics and National center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China State key laboratory of Rice biology China National Rice Research Institute Chinese Academy of Agricultural Sciences Hangzhou China

During vegetative development,higher plants continuously form new leaves in regular spatial and temporal *** with abnormal leaf developmental patterns not only provide a great insight into understanding the regulatorymechanism of plant architecture,but also enrich the ways to its modification by which crop yield could be ***,we reported the characterization of the rice leafy-head2 (lhd2) mutant that exhibits shortened plastochron,dwarfism,reduced tiller number,and failure of phase transition from vegetative to reproductive *** and histologicalstudy revealed that the rapid emergence of leaves in lhd2 was resulted from the rapid initiation ofleafprimordia whereasthe reduced tiller number was a consequence of the suppression of the tiller bud *** molecular and geneticanalysis showed that LHD2 encodes a putative RNA binding protein with 67% similarity to maize *** ofgenome-scale expression profiles between wild-type and lhd2 plants suggested that LHD2 may regulate rice shoot devel-opment through KNOXand hormone-related *** similar phenotypes caused by LHD2 mutation and the conservedexpression pattern of LHD2 indicated a conserved mechanism in controlling the temporal leaf initiation in grass.

关键词： phyllotaxy plastochron LHD2 RNA-binding protein stem elongation plant architecture Oryza sativa L

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molecular control of S-RNase-based self-incompatibility in flowering plants

Molecular control of S-RNase-based self-incompatibility in f...

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中国植物学会植物细胞生物学2010年学术年会

作者： Yong-biao Xue~* key laboratory of molecular and developmental biology,institute of genetics and developmental biology,chinese academy of sciences and National center for Plant Gene Research,beijing 100101, china

Mate choice is an essential process during sexual plant reproduction,in which self-incompatibility(SI) is widely adopted as an intra-specific reproductive barrier to prevent self-fertilization by many flowering *** many flowering plants,genetic studies have shown that a single polymorphic S-locus,encoding at least two components from both the pollen and pistil sides, controls the discrimination of self(or genetically related) and non-self *** Solanaceae, Plantaginaceae and Rosaceae,recent molecular studies have demonstrated that S-RNase(S-ribonuclease) expressed in pistil(pistil S) and SLF(5-Locus F-box) /SFB(S-haplotype-specific F-box) genes in pollen (pollen S) control the pistil and pollen expression of SI,***,how they interact with each other to control the SI signalling remains largely *** we show that:1,S-RNase and SLF proteins physically interact with each other;2,SLF is capable of forming a typical SCF complex;3, S-RNases are specifically polyubiquitinated during compatible pollination and 4,the polyubiquitinated S-RNases are degraded through the ubiquitin/26S proteasome *** on these findings,we propose an S-RNase degradation model to explain how S-RNase and SLF interact with each other to reject self- and accept cross-pollen tubes during the SI signalling response.

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MicroRNA miR-24 Inhibits Erythropoiesis through Targeting Activin Type Ⅰ Receptor ALK4

MicroRNA miR-24 Inhibits Erythropoiesis through Targeting Ac...

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中国细胞生物学学会第九次会员代表大会暨青年学术大会

作者： Qiang Wang~1 Zheng Huang~2 Xue Hui-Ling~2 Xiu-Li Ju~3 Jing-Dong J.Han~2 Ye-Guang Chen~1 1 State key laboratory of Biomembrane and Membrane Biotechnology,Department of Biological sciences and Biotechnology,Tsinghua University,beijing 100084,china 2.cas key laboratory of molecular developmental biology and center for molecular systems biology,institute of genetics and developmental biology,the chinese academy of sciences,beijing 100101,china 3 Department of Pediatrics,Qilu Hospital of Shandong University,Jinan 250012,china

关键词： microRNA miR-24 activin ALK4 erythopoiesis

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LAZY1 controls rice shoot gravitropism through regulating polar auxin transport

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Cell Research 2007年第5期17卷 402-410页

作者： Peijin Li1 Yonghong Wang1 Qian Qian2 Zhiming Fu1 Mei Wang1 Dali Zeng1,2 Baohua Li1 Xiujie Wang1 Jiayang Li1 1 State key laboratory of Plant Genomics and National center for Plant Gene Research, institute of genetics and developmental biology, chinese academy of sciences, beijing 100101, china 2 State key laboratory of Rice biology, china National Rice Research institute, chinese academy of Agricultural sciences, Hangzhou 310006, china State key laboratory of Plant Genomics and National center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing China State key laboratory of Rice biology China National Rice Research Institute Chinese Academy of Agricultural Sciences Hangzhou China

Tiller angle of rice (Oryza sativa L.) is an important agronomic trait that contributes to grain production, and haslong attracted attentions of breeders for achieving ideal plant architecture to improve grain yield. Although enormousefforts have been made over the past decades to study mutants with extremely spreading or compact tillers, the molecularmechanism underlying the control of tiller angle of cereal crops remains unknown. Here we report the cloning of theLAZY1 (LA1) gene that regulates shoot gravitropism by which the rice tiller angle is controlled. We show that LA1, anovel grass-specific gene, is temporally and spatially expressed, and plays a negative role in polar auxin transport (PAT).Loss-of-function of LA1 enhances PAT greatly and thus alters the endogenous IAA distribution in shoots, leading to thereduced gravitropism, and therefore the tiller-spreading phenotype of rice plants.

关键词： LAZY1 gravitropism auxin transport tiller angle plant architecture Oryza sativa L.

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MicroRNA miR-24 inhibits erythropoiesis by targeting activin type Ⅰ receptor ALK4

MicroRNA miR-24 inhibits erythropoiesis by targeting activin...

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中国遗传学会“发育、遗传和疾病”研讨会

作者： Qiang Wang~1 Zheng Huang~2 Huiling Xue~2 Chengcheng Jin~1 Xiu-Li Ju~3 Jing-Dong J.Han~2 Ye-Guang Chen~(1#) 1 State key laboratory of Biomembrane and Membrane Biotechnology,Department of Biological sciences and Biotechnology,Tsinghua University,beijing 100084,china 2.cas key laboratory of molecular developmental biology and center for molecular systems biology,institute of genetics and developmental biology,the chinese academy of sciences,Beifing 100101, china 3 Department of Pediatrics,Qilu Hospital of Shandong University,Jinan 250012,china

MicroRNAs have been suggested to modulate a variety of cellular *** we report that miR-24 regulates erythroid differentiation by influencing the expression of human activin type I receptor ALK4(bALK4).Ectopic expression of miR-24 reduces the mRNA and protein levels of bALK4 by targeting its 3'-untranslated region and interferes with activin-induced Smad2 phosphorylation and reporter ***,miR-24 represses the activin-mediated accumulation of hemoglobin,an erythroid differentiation marker,in erythroleukemic K562 cells and decreases erythroid colony-forming and burst-forming units of CD34+ hematopoietic progenitor ***4 expression is reversely correlated with miR-24 expression during erythroid ***,our findings define a regulation mode of miR-24 on erythropoiesis by impeding ALK4 expression.

关键词： ALK receptor ALK4 MicroRNA miR-24 inhibits erythropoiesis by targeting activin type miR

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Small RNA Biogenesis Pathways in Rice

Small RNA Biogenesis Pathways in Rice

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第十二届全国植物基因组学大会

作者： Xiaofeng Cao Stake key laboratory of Plant Genomics and center for Plant Gene Research,institute of genetics and developmental biology, chinese academy of sciences,beijing 100101,china

miRNAs and siRNAs are two types of non-coding RNAs involved in developmental regulation,genome maintenance and defense in *** plants have evolved multiple Dicer-like(DCL) and RNA-dependent RNA polymerases(RDRs) proteins to produce different classes of small RNAs with specialized molecular ***,we demonstrated the critical roles of OsDCL1 and OsDCL4 in the biogenesis of miRNA and 21nt siRNA(including trans-acting small interfering RNA,tasiRNA) in *** higher plants,tasiRNA are featured by phased 21nt interval as the result of sequential processes of RDR6 and DCL4 with the phase pattern initiated by miRNA-directed *** rice panicle,besides hundreds of 21nt phased small RNAs,a previous study also identified many 24nt phased RNAs,which are absent in Arabidop-

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psRobot:a web-based meta-analysis toolbox for plant small RNA

psRobot:a web-based meta-analysis toolbox for plant small RN...

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2011全国植物生物学研讨会

作者： Hua-Jun Wu,Ying-Ke Ma,Meng Wang and Xiu-Jie Wang~* The State key laboratory of Plant Genomics,center for molecular systems biology,institute of genetics and developmental biology,chinese academy of sciences,beijing 100101

Small RNAs(smRNAs) in plants,mainly consisting of miRNAs and siRNAs, play an important role in both transcriptional regulation and post transcriptional *** the rapid development of the next-generation sequencing technology, a large number of small RNA deep sequencing data have been *** is developed to meet the growing demands for user-friendly small RNA analysis tools. Web-based psRobot has two major functions:stem-loop smRNA prediction and srnRNA target ***-loop smRNA prediction estimates the biogenesis of the queried small RNAs by structural and functional *** analysis

关键词： small RNA stem-loop prediction target prediction meta-analysis

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PODl,a novel ER protein,controls the pollen tube response to female cues in Arabidopsis

PODl,a novel ER protein,controls the pollen tube response to...

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2011全国植物生物学研讨会

作者： Hongju Li,Yong Xue,Tong Wang,Weicai Yang~* key laboratory of molecular and developmental biology,and National center for Plant Gene Research(beijing),institute of genetics and developmental biology,chinese academy of sciences, 1 West Beichen Road,beijing 100101,china

Pollen tube guidance is a common process,analogous to axon guidance in animals,which involves cell-cell interactions and signaling between the male gametophyte(pollen) and the female *** putative female cues to attract pollen tube have been shown to be Cys-rich defensin-like peptide(Okuda et al., Nature 2009).Nothing is known on how pollen tube perceives and responds to the female cues although a putative membrane K transporter was implicated in this process(Lu et al.,Plant Cell 2011).In an effort for male mutations disrupting the perception of the female signals,we identified a pollen-specific mutation,

关键词： Arabidopsis pollen tube guidance POD1 ER quality control

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Metabolic and cellular features of rice endosperms revealed by proteomics approaches

Metabolic and cellular features of rice endosperms revealed ...

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中国遗传学会植物遗传和基因组学专业委员会2009年学术研讨会

作者： Sheng Bao Xu~1,Hua Tao Yu~1,Kang Chong~1,Yongbiao Xue,and Tai Wang~(1*) 1 Research center for molecular & developmental biology,key laboratory of Photosynthesis & Environmental molecular Physiology,institute of Botany,chinese academy of sciences,and National center for Plant Gene Reserch,beijing 100093 2 key laboratory of molecular and developmental biology,institute of genetics and developmental biology,beijing 100010

The endosperm at storage phase experiences a decreased oxygen content,and undergoes a serial of coordinated cellular and metabolic events including starchy endosperm cell death, starch synthesis and starch granule packaging leading to efficient reverse accumulation. Proteomics analysis has revealed a switch from central carbon metabolism to alcoholic

关键词： ROS-antioxidant interaction endosperm programmed cell death starch granule Oryza sativa.

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Cellular and biochemical control of S-RNase-based self-incompatibility in flowering plants

Cellular and biochemical control of S-RNase-based self-incom...

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第十三届全国植物基因组学大会

作者： Jiangbo Fan,Wei Liu,Qun Li,Yu’e Zhang,Yongbiao Xue~* State key laboratory of molecular developmental biology,institute of genetics and developmental biology,chinese academy of sciences and National center for Plant Gene Research(beijing).beijing 100101,P.R.china,

Self-incompatibility(SI) is an intra-specific reproductive barrier to prevent selffertilization and to promote cross-fertilization by many flowering *** the SI response,self or genetically related pollen is rejected by the pistil and non-self(cross) pollen accepted for *** outcomes are referred to as self-pollen incompatibility(SPI) and cross-pollen compatibility(CPC),***

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