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Chlorophyllide-a Oxygenase 1(OsCAO1) Over-Expression Affects Rice Photosynthetic Rate and Grain Yield

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Rice science 2023年第2期30卷 87-91,I0002-I0006页

作者： HU Ping MA Jie KANG Shujing LI Sanfeng WU Xianmei ZENG Longjun LU Caolin HE Rui HE Huiying SHANG Lianguang RAO Yuchun ZHU Xudong xiong guosheng QIAN Qian GUO Longbiao WANG Yuexing State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Shenzhen Branch Guangdong Laboratory for Lingnan Modern Agriculture/Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs/Agricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Plant Phenomics Research Center Nanjing Agricultural UniversityNanjing 210095China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China

Leaf color and photosynthesis are important factors for rice growth and development.Hence,improving the photosynthetic rate is an effective approach for increasing rice yield.We isolated a gene,chlorophyllide-a oxygen... 详细信息

关键词： OsCAO1 development Oxygen

改良肩峰前下双切口钢板内固定治疗外展嵌插型肱骨近端骨折的早期疗效

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中华骨科杂志 2024年第7期44卷 477-484页

作者：叶友友俞张剑林焱斌庄研许阳凯熊国胜涂少臣福州市第二总医院创伤骨科(福建医科大学临床医学部) 福州350007

目的探讨改良肩峰前下双切口钢板内固定治疗外展嵌插型三、四部分肱骨近端骨折的临床疗效。方法回顾性分析福州市第二总医院于2018年11月至2021年11月期间采用改良肩峰前下双切口钢板内固定治疗的35例外展嵌插型三、四部分肱骨近端骨折... 详细信息

目的探讨改良肩峰前下双切口钢板内固定治疗外展嵌插型三、四部分肱骨近端骨折的临床疗效。方法回顾性分析福州市第二总医院于2018年11月至2021年11月期间采用改良肩峰前下双切口钢板内固定治疗的35例外展嵌插型三、四部分肱骨近端骨折患者的病历资料,男15例、女20例,年龄(61.7±7.8)岁(范围40~73岁)。根据Neer分型,三部分骨折17例、四部分骨折18例。采用改良肩峰前下双切口入路,自三角肌前束自然间隙进入,对骨折端进行复位及钢板内固定。统计手术时间、切口长度、X线透视时间、随访时间和肩关节Constant-Murley评分、骨折愈合时间、疼痛视觉模拟评分(visual analogue scale,VAS)及肱骨颈干角等。记录术中及术后并发症的发生情况。结果35例患者均顺利完成手术,切口长度为(8.1±0.3)cm(范围7.6~9.0cm),手术时间为(87.3±9.3)min(范围70~110min)。术中X线透视时间为(6.6+0.3)s,Neer分型三部分骨折为(6.3±0.2)s、四部分骨折为(6.8±0.2)s,差异有统计学意义(t=6.350,P<0.001)。随访时间为(22.1±5.8)个月(范围14~31个月)。骨折愈合时间为(11.8±1.4)周(范围10~15周)。末次随访时VAS评分为(1.6±0.7)分(范围1~3分);肩关节Constant-Murley评分为(89.6±2.9)分(范围84~95分);肱骨颈干角为133.4°±3.1°(范围128°~138),Neer分型三部分骨折为133.6°±3.5°四部分骨折为133.3°±2.8°差异无统计学意义(t=0.288,P=0.075)。未观察到肱骨头坏死、骨折部位内翻塌陷、腋神经损伤等并发症。结论改良肩峰前下双切口钢板内固定治疗外展嵌插型三、四部分肱骨近端骨折具有创伤小、安全有效的特点,可获得良好的早期疗效。

关键词：肩骨折骨折固定术,内治疗结果手术入路

OsWR2 recruits HDA704 to regulate the deacetylation of H4K8ac in the promoter of OsABI5 in response to drought stress

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Journal of Integrative Plant Biology 2023年第7期65卷 1651-1669页

作者： Yalu Guo Yiqing Tan Minghao Qu Kai Hong Longjun Zeng Lei Wang Chuxiong Zhuang Qian Qian Jiang Hu guosheng xiong Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural SciencesShenzhen 518120China Guangdong Laboratory for Lingnan Modern Agriculture State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresourcesCollege of Life SciencesSouth China Agricultural UniversityGuangzhou 510642China Plant Phenomics Research Center Academy of Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China College of Animal Science and Technology Southwest UniversityChongqing 402460China Yichun Academy of Sciences Yinchun 336000China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310000China

Drought stress is a major environmental factor that limits the growth, development, and yield of rice(Oryza sativa L.). Histone deacetylases(HDACs) are involved in the regulation of drought stress responses. HDA704 is an RPD3/HDA1 class HDAC that mediates the deacetylation of H4K8(lysine 8of histone H4) for drought tolerance in rice. In this study, we show that plants overexpressing HDA704(HDA704-OE) are resistant to drought stress and sensitive to abscisic acid(ABA), whereas HDA704 knockout mutant(hda704) plants displayed decreased drought tolerance and ABA sensitivity.Transcriptome analysis revealed that HDA704 regulates the expression of ABA-related genes in response to drought stress. Moreover, HDA704 was recruited by a drought-resistant transcription factor,WAX SYNTHESIS REGULATORY 2(Os WR2), and co-regulated the expression of the ABA biosynthesis genes NINE-CIS-EPOXYCAROTENOID DIOXYGENASE 3(NCED3), NCED4, and NCED5 under drought stress. HDA704 also repressed the expression of ABA-INSENSITIVE 5(Os ABI5) and DWARF AND SMALL SEED 1(Os DSS1) by regulating H4K8ac levels in the promoter regions in response to polyethylene glycol 6000 treatment. In agreement, the loss of Os ABI5 function increased resistance to dehydration stress in rice. Our results demonstrate that HDA704 is a positive regulator of the drought stress response and offers avenues for improving drought resistance in rice.

关键词： drought stress HDA704 histone acetylation OsABI5 OsWR2 rice

High-quality genome assembly of Huazhan and Tianfeng,the parents of an elite rice hybrid Tian-you-hua-zhan

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Science China(Life Sciences) 2022年第2期65卷 398-411页

作者： Hui Zhang Yuexing Wang Ce Deng Sheng Zhao Peng Zhang Jie Feng Wei Huang Shujing Kang Qian Qian guosheng xiong Yuxiao Chang Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of Life SciencesSouth China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China National Key Laboratory of Wheat and Maize Crop Science College of AgronomyHenan Agricultural UniversityZhengzhou 450002China College of Life Science and Technology Guangxi UniversityNanning 530004China Plant Phenomics Research Center Nanjing Agricultural UniversityNanjing 210095China

High-quality rice reference genomes have accelerated the comprehensive identification of genome-wide variations and research on functional genomics and breeding.Tian-you-hua-zhan has been a leading hybrid in China over the past decade.Here,de novo genome assembly strategy optimization for the rice indica lines Huazhan(HZ)and Tianfeng(TF),including sequencing platforms,assembly pipelines and sequence depth,was carried out.The PacBio and Nanopore platforms for long-read se-quencing were utilized,with the Canu,wtdbg2,SMARTdenovo,Flye,Canu-wtdbg2,Canu-SMARTdenovo and Canu-Flye assemblers.The combination of PacBio and Canu was optimal,considering the contig N50 length,contig number,assembled genome size and polishing process.The assembled contigs were scaffolded with Hi-C data,resulting in two“golden quality”rice reference genomes,and evaluated using the scaffold N50,BUSCO,and LTR assembly index.Furthermore,42,625 and 41,815 non-transposable element genes were annotated for HZ and TF,respectively.Based on our assembly of HZ and TF,as well as Zhenshan97,Minghui63,Shuhui498 and 9311,comprehensive variations were identified using Nipponbare as a reference.The de novo assembly strategy for rice we optimized and the“golden quality”rice genomes we produced for HZ and TF will benefit rice genomics and breeding research,especially with respect to uncovering the genomic basis of the elite traits of HZ and TF.

关键词： de novo genome assembly high-quality PacBio Nanopore variation rice

Advances in the regulation and crosstalks of phytohormones

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Chinese Science Bulletin 2009年第22期54卷 4069-4082页

作者： xiong guosheng LI JiaYang WANG YongHong State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Deve-lopmental Biology Chinese Academy of Sciences Beijing 100101 China

Various mutants defective in phytohormone biosynthesis and signaling pathways have been identified and characterized recently. Functional analysis of corresponding genes has greatly enriched our knowledge of phytohormone biosynthesis, transport, and signal transduction. Moreover, identification of phytohormone receptors and dissection of cross-talks among phytohormones allow us to elucidate the molecular basis of actions of phytohormones. The recent comprehensive work on the regulation of the biosynthesis, transport and signaling of phytohormones will help us to understand phytohormone actions in plant growth and development and their potential application in crop improvement. In this review, we summarize the latest work about phytohormones actions and highlight some common issues in this field.

关键词：激素调节植物激素串扰激素合成信号途径信号转导分子基础生物合成

Identification and functional analysis of the MOC1 interacting protein 1

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Journal of Genetics and Genomics 2010年第1期37卷 69-77页

作者： Fengli Sun Weiping Zhang guosheng xiong Meixian Yan Qian Qian Jiayang Li Yonghong Wang State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhou 310006China

Rice tillering is one of the most important agronomic traits that determine grain yields.Our previous study has demonstrated that the MONOCULM1 （MOC1） gene is a key component that controls the formation of rice tiller buds.To further elucidate the molecular mechanism of MOC1 involved in the regulation of rice tillering,we performed a yeast-two-hybrid screening to identify MOC1 interacting proteins （MIPs）.Here we reported that MIP1 interacted with MOC1 both in vitro and in vivo.The overexpression of MIP1 resulted in enhanced tillering and reduced plant height.In-depth characterization of the context of MIP1 and MOC1 would further our understanding of molecular regulatory mechanisms of rice tillering.

关键词： rice MOC1 MIP1 tillering protein-protein interaction

MONOCULM 3,an Ortholog of WUSCHEL in Rice,Is Required for Tiller Bud Formation

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Journal of Genetics and Genomics 2015年第2期42卷 71-78页

作者： Zefu Lu Gaoneng Shao Jinsong xiong Yongqing Jiao Jing Wang Guifu Liu Xiangbing Meng Yan Liang guosheng xiong Yonghong Wang Jiayang Li State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Developmental BiologyChinese Academy of Sciences College of Horticulture Nanjing Agricultural University Oil Crops Research Institute China Academy of Agricultural Science Rice Research Institute Sichuan Agricultural University Agricultural Genome Institute China Academy of Agricultural Science

WUSCHEL （WUS） plays an essential role for the maintenance of meristem activity in dicots, but its function is still elusive in monocots. We isolated a new monoculm mutant, monoculm 3 （moc3）, in which a point mutation causes the premature termination of rice O. sativa WUS （OsWUS）. Morphological observation revealed that the formation of tiller buds was disrupted in moc3. MOC3 was localized in the nuclear and could interact with TOPLESS-RELATED PROTEINS （TPRs）. The expression of MOC3 was induced by cytokinins and defection of MOC3 affected the expression of several two-component cytokinin response regulators, OsRRs and ORRs. Our results suggest that MOC3 is required for the formation of axillary buds and has a complex relationship with cytokinins.

关键词： MOC3 WUSCHEL Tiller bud formation Cytokinins Oryza sativa L

Low phosphorus promotes NSP1–NSP2 heterodimerization to enhance strigolactone biosynthesis and regulate shoot and root architecture in rice

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Molecular Plant 2023年第11期16卷 1811-1831页

作者： Kun Yuan Hao Zhang Chaoji Yu Nan Luo Jijun Yan Shuang Zheng Qingliang Hu Dahan Zhang Liquan Kou Xiangbing Meng Yanhui Jing Mingjiang Chen Xinwei Ban Zongyun Yan Zefu Lu Jian Wu Yu Zhao Yan Liang Yonghong Wang guosheng xiong Jinfang Chu Ertao Wang Jiayang Li Bing Wang State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologySIBSChinese Academy of SciencesShanghai 200032China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Guangdong Laboratory for Lingnan Modern Agriculture State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesCollege of AgricultureSouth China Agricultural UniversityGuangzhou 510642China National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China College of Life Sciences Shandong Agriculture UniversityTai’anShandong 271018China Academy for Advanced Interdisciplinary Studies Nanjing Agricultural UniversityNanjing 210095China Yazhouwan National Laboratory SanyaHainan 572024China

Phosphorus is an essential macronutrient for plant development and metabolism,and plants have evolved ingenious mechanisms to overcome phosphate(Pi)starvation.However,the molecular mechanisms underlying the regulation of shoot and root architecture by low phosphorus conditions and the coordinated utilization of Pi and nitrogen remain largely unclear.Here,we show that Nodulation Signaling Pathway 1(NSP1)and NSP2 regulate rice tiller number by promoting the biosynthesis of strigolactones(SLs),a class of phytohormones with fundamental effects on plant architecture and environmental responses.We found that NSP1 and NSP2 are induced by Oryza sativa PHOSPHATE STARVATION RESPONSE2(OsPHR2)in response to low-Pi stress and form a complex to directly bind the promoters of SL biosynthesis genes,thus markedly increasing SL biosynthesis in rice.Interestingly,the NSP1/2–SL signaling module represses the expression of CROWN ROOTLESS 1(CRL1),a newly identified early SL-responsive gene in roots,to restrain lateral root density under Pi deficiency.We also demonstrated that GR24^(4DO) treatment under normal conditions inhibits the expression of OsNRTs and OsAMTs to suppress nitrogen absorption but enhances the expression of OsPTs to promote Pi absorption,thus facilitating the balance between nitrogen and phosphorus uptake in rice.Importantly,we found that NSP1p:NSP1 and NSP2p:NSP2 transgenic plants show improved agronomic traits and grain yield under low-and medium-phosphorus conditions.Taken together,these results revealed a novel regulatory mechanism of SL biosynthesis and signaling in response to Pi starvation,providing genetic resources for improving plant architecture and nutrient-use efficiency in low-Pi environments.

关键词： rice Pi deficiency strigolactone NSP1 and NSP2 CRL1 nitrogen and Pi absorption

OsGRAS19 May Be a Novel Component Involved in the Brassinosteroid Signaling Pathway in Rice

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Molecular Plant 2013年第3期6卷 988-991页

作者： LishengChen guosheng xiong Xia Cui Meixian Yan Ting Xu Qian Qian Yongbiao Xue Jiayang Li Yonghong Wang 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 Present address: Molecular Cellular and Developmental Biology University of Michigan Ann Arbor MI 48105 USA State Key Laboratory of Rice Biology China National Rice Research Institute Chinese Academy of Agricultural Sciences Hangzhou 310006 China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Dear Editor, The brassinosteroid （BR） signaling pathway has been well elucidated in Arabidopsis. The identification of BR-signaling components in rice suggested that the primary pathway is conserved in both dicot a... 详细信息

关键词： OsGRAS19 Component Involved