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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

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

Quantitative Trait Loci Mapping of Flag-leaf Ligule Length in Rice and Alignment with ZmLG1 Gene

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Journal of Integrative Plant Biology 2009年第4期51卷 360-366页

作者： Dali zeng Jiang Hu Guojun Dong Jian Liu longjun zeng Guangheng Zhang Longbiao Guo Yihua Zhou Qian Qian State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China Institute of Genetics and Developmental Biology the Chinese Academy of Sciences Beijing 100101 China

A doubled haploid （DH） population, which consists of 120 lines derived from anther culture of a typical indica and japonica hybrid‘CJ06＇/‘TNI＇, was used in this study. Ligule lengths of flag leaf were investigated for quantitative trait loci （QTL） mapping using the DH population. Five QTLs （qLL-2, qLL.4, qLL-6, qLL-IO and qLL-12） controlling the ligule length （LL） were detected on chromosomes 2, 4, 6, 10 and 12, with the variances explained 11.4%, 13.6%, 27.8%, 22.1% and 11.0%, respectively. Using four known genes of ZmGL1, ZmGL2, ZmGL3 and ZmGL4 in maize from the MaizeGDB, their homologs in rice were aligned and integrated into the existing simple sequence repeats linkage map by in silico mapping. A ZmLG1 homolog gene, OsLG1 encoding a squamosa promoter binding protein, was located between the markers RM255 and RM280, which is just identical to the interval of qLL.4 on the long arm of chromosome 4. The results are beneficial to dissection of the ligule molecular mechanism and the study of cereal evolution.

关键词： double haploid population in silico mapping ligule length of flag leaf quantitative trait loci rice.

Genetic analysis of leaffolder resistance in rice

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Journal of Genetics and Genomics 2010年第5期37卷 325-331页

作者： Yuchun Rao Guojun Dong Dali zeng Jiang Hu longjun zeng Zhengyu Gao Guanghen Zhang Longbiao Guo Qian Qian State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China Graduate School of Chinese Academy of Agriculture Science Beijing 100081 China

A double haploid （DH） population, which consists of 120 lines derived from anther culture of a typical indica and japonica hybrid ‘CJ06＇/‘TNI＇, was used to investigate the genetic basis for rice leaffolder resistance. Using a constructed molecular linkage map, five QTLs for rolled leaves were detected on chromosomes 1, 2, 3, 4, and 8. The positive alleles from C J06 on chromosomes 3, 4, and 8 increased the resistance to rice leaffolder, and the alleles from TN1 on chromosomes 1 and 2 also enhanced resistance to leaffolder. The interactions between QTLs were identified and tested, and four conditional interactions were acquired for resistance to rice leaffolder. These loci were located on chromosomes 2, 9, 10, and 11, respectively. QTL pyramiding indicated that the positive alleles affect resistance to leaffolder. The prospective application of this data in rice breeding was also discussed.

关键词： rice （Oryza sativa L.） rice leaffolder QTL analysis conditional interaction

Characterization and mapping of a novel mutant sms1 (senescence and male sterility 1) in rice

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Journal of Genetics and Genomics 2010年第1期37卷 47-55页

作者： Wenyi Yan Shenghai Ye Qingsheng Jin longjun zeng Yu Peng Dawei Yan Weibing Yang Donglei Yang Zuhua He Yanjun Dong Xiaoming Zhang College of Life and Environment Sciences Shanghai Normal UniversityShanghai 200234China Institute of Crop and Nuclear Technology Utilization Zhejiang Academy of Agricultural SciencesHangzhou 310021China Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences Chinese Academy of SciencesShanghai 200032China

Plant senescence plays diverse important roles in development and environmental responses.However,the molecular basis of plant senescence is remained largely unknown.A rice spontaneous mutant with the character of early senescence and male sterility （sms） was found in the breeding line NT10-748.In order to identify the gene SMS1 and the underlying mechanism,we preliminarily analyzed physiological and biochemical phenotypes of the mutant.The mutant contained lower chlorophyll content compared with the wild type control and was severe male sterile with lower pollen viability.Genetic analysis showed that the mutant was controlled by a single recessive gene.By the map-based cloning approach,we fine-mapped SMS1 to a 67 kb region between the markers Z3-4 and Z1-1 on chromosome 8 using 1,074 F2 recessive plants derived from the cross between the mutant sms1 （japonica） × Zhenshan 97 （indica）,where no known gene involved in senescence or male sterility has been identified.Therefore the SMS1 gene will be a novel gene that regulates the two developmental processes.The further cloning and functional analysis of the SMS1 gene is under way.

关键词： senescence male sterility rice molecular marker gene mapping

Control of Rice Embryo Development, Shoot Apical Meristem Maintenance, and Grain Yield by a Novel Cytochrome P450

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Molecular Plant 2013年第6期6卷 1945-1960页

作者： Weibing Yang Mingjun Gao Xin Yin Jiyun Liu Yonghan Xu longjun zeng Qun Li Shubiao Zhang Junmin Wang Xiaoming Zhang Zuhua He National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai) Shanghai Institute of Plant Physiology andEcology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences 300 Fenglin Road Shanghai 200032 China State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Zhejiang Academy of Agricultural Sciences Hangzhou 310021China Zhejiang Province Key Laboratory of Technology for Improving Agricultural Product Quality School of Agricultural and Food Science ZhejiangAgriculture and Forest University Hangzhou 311300 China institute of Genetics and Crop'Breedi'ng Fujian Ag'riculture and Forestry University Fuzhou 350002 China

Angiosperm seeds usually consist of two major parts： the embryo and the endosperm. However, the molec- ular mechanism（s） underlying embryo and endosperm development remains largely unknown, particularly in rice, the model cereal. Here, we report the identification and functional characterization of the rice GIANT EMBRYO （GE） gene. Mutation of GE resulted in a large embryo in the seed, which was caused by excessive expansion of scuteUum cells. Post-embryonic growth of ge seedling was severely inhibited due to defective shoot apical meristem （SAM） mainte- nance. Map-based cloning revealed that GE encodes a CYP78A subfamily P450 monooxygenase that is localized to the endoplasmic reticulum. GE is expressed predominantly in the scutellar epithelium, the interface region between embryo and endosperm. Overexpression of GE promoted cell proliferation and enhanced rice plant growth and grain yield, but reduced embryo size, suggesting that GE is critical for coordinating rice embryo and endosperm development. Moreover, transgenic Arabidopsis plants overexpressing AtCYP78AlO, a GE homolog, also produced bigger seeds, implying a con- served role for the CYP78A subfamily of P450s in regulating seed development. Taken together, our results indicate that GE plays critical roles in regulating embryo development and SAM maintenance.

关键词： embryo endosperm shoot apical meristem cytochrome P450 grain yield rice.

A Rare Allele of GS2 Enhances Grain Size anc Grain Yield in Rice

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Molecular Plant 2015年第10期8卷 1455-1465页

作者： Jiang Hu Yuexing Wang Yunxia Fang longjun zeng Jie Xu Haiping Yu Zhenyuan Shi Jiangjie Pan Dong Zhang Shujing Kang Li Zhu Guojun Dong Longbiao Guo Dali zeng Guangheng Zhang Lihong Xie Guosheng Xiong Jiayang Li Qian Qian The State Key Laboratory of Rice Biology China National Rice Research Institute Hangzhou 310006 China Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences Shenzhen 518120 China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Developmental BiologyChinese Academy of Sciences Beijing 100101 China These authors contributed equally to this article.

Grain size determines grain weight and affects grain quality. Several major quantitative trait loci （QTLs） regulating grain size have been cloned; however, our understanding of the underlying mechanism that regulates the size of rice grains remains fragmentary. Here, we report the cloning and characterization of a dominant QTL, GRAIN SIZE ON CHROMOSOME 2 （GS2）, which encodes Growth-Regulating Factor 4 （OsGRF4）, a transcriptional regulator. GS2 localizes to the nucleus and may act as a transcription activator. A rare mutation of GS2 affecting the binding site of a microRNA, OsmiR396c, causes elevated expression of GS2/OsGRF4. The increase in GS2 expression leads to larger cells and increased numbers of cells, which thus enhances grain weight and yield. The introduction of this rare allele of GS2/OsGRF4 into rice cultivars could significantly enhance grain weight and increase grain yield, with possible applications in breeding high-yield rice varieties.

关键词： GS2 OsGRF4 QTL grain size miR396c rice

A Strigolactone Biosynthesis Gene Contributed to the Green Revolution in Rice

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Molecular Plant 2020年第6期13卷 923-932页

作者： Yuexing Wang Lianguang Shang Hong Yu longjun zeng Jiang Hu Shen Ni Yuchun Rao Sanfeng Li Jinfang Chu Xiangbing Meng Lei Wang Ping Hu Jijun Yan Shujing Kang Minghao Qu Hai Lin Tao Wang Quan Wang Xingming Hu Hongqi Chen Bing Wang Zhenyu Gao Longbiao Guo Dali zeng Xudong Zhu Guosheng Xiong Jiayang Li Qian Qian State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China 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 of Plant Genomics and National Center for Plant Gene Research(Beijing)Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Plant Phenomics Research Center Nanjing Agricultural UniversityNanjing 210095China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China

Plant architecture is a complex agronomic trait and a major factor of crop yield,which is affected by several important hormones.Strigolactones(SLs)are identified as a new class hormoneinhibiting branching in many plant species and have been shown to be involved in various developmental processes.Genetical and chemical modulation of the SL pathway is recognized as a promising approach to modify plant architecture.However,whether and how the genes involved in the SL pathway could be utilized in breeding still remain elusive.Here,we demonstrate that a partial loss-of-function allele of the SL biosynthesis gene,HIGH TILLERING AND DWARF 1/DWARF17(HTD1/D17),which encodes CAROTENOID CLEAVAGE DIOXYGENASE 7(CCD7),increases tiller number and improves grain yield in rice.We found that the HTD1 gene had been widely utilized and co-selected with Semidwarf 1(SD1),both contributing to the improvement of plant architecture in modern rice varieties since the Green Revolution in the 1960s.Understanding how phytohormone pathway genes regulate plant architecture and how they have been utilized and selected in breeding will lay the foundation for developing the rational approaches toward improving crop yield.

关键词： rice strigolactones tiller number Green Revolution

基于二阶一致性算法的电池储能系统SOC均衡及功率分配策略

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广东电力 2024年第4期37卷 1-9页

作者：王颂汪隆君王钢钟庆曾德辉华南理工大学电力学院广东广州510641 广州嘉缘电力科技有限公司广东广州510610

为延长电池储能系统的整体寿命,需保持储能系统中各单元的荷电状态(state of charge,SOC)均衡。为此,提出一种基于二阶一致性算法的改进下垂控制策略,通过指数函数嵌套变化系数,实现不同容量储能单元快速SOC均衡。在SOC均衡的基础上设... 详细信息

为延长电池储能系统的整体寿命,需保持储能系统中各单元的荷电状态(state of charge,SOC)均衡。为此,提出一种基于二阶一致性算法的改进下垂控制策略,通过指数函数嵌套变化系数,实现不同容量储能单元快速SOC均衡。在SOC均衡的基础上设计二次控制策略,在一定通信时延下实现频率、电压恢复和有功、无功功率合理分配。最后,以4台储能单元组成的电池储能系统为算例进行仿真,验证了所提控制策略的有效性,SOC能够快速收敛达到均衡状态,频率、电压能够恢复到额定值,有功、无功功率能够按照相应下垂系数比例进行分配。

关键词：储能单元下垂控制荷电状态均衡二阶一致性算法频率、电压恢复功率分配

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