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水稻叶形态的建成及分子机制研究进展

中国稻米 2024年第5期30卷 19-29页

作者：贾彬陈可叶婵娟郭洁周新桥陈达刚刘娟姜姝刘冠明刘传光仲恺农业工程学院农业与生物学院广州510225 广东省农业科学院水稻研究所/农业农村部华南优质稻遗传育种重点实验室(部省共建)/广东省水稻育种新技术重点实验室/广东省水稻工程实验室广州510640 华南农业大学农学院广州510642

水稻叶片形态是决定理想株型的关键因素。根据“源库”理论,水稻叶片形态通过影响光合效率等“源”流影响水稻产量。其中,叶片大小、卷曲度以及叶倾角是植物整体株型和叶型中决定产量的关键农艺性状。近年来,已有许多控制叶片形态的基... 详细信息

水稻叶片形态是决定理想株型的关键因素。根据“源库”理论,水稻叶片形态通过影响光合效率等“源”流影响水稻产量。其中,叶片大小、卷曲度以及叶倾角是植物整体株型和叶型中决定产量的关键农艺性状。近年来,已有许多控制叶片形态的基因被克隆与鉴定。水稻叶片发育过程可分为3个阶段:水稻叶原基的形成、极性的建立及维持、叶片的扩张。近年来,随着分子生物学技术的快速发展,众多调控水稻叶片形态的关键基因的重要功能已被阐明。譬如,PLA1、PLA2等基因在细胞分裂过程中的协同作用,NAL1、NAL9、NRL1、NRL2等基因在叶脉发育中的协同调控,SLL1、SRL2等基因对厚壁组织细胞结构的精细调控,OsPIN1、OsWOX3A等基因对植物激素的极性运输和分配等,共同构成了水稻叶片形态复杂调控网络的基石,为深入理解作物叶片形态发育的分子机制提供了重要线索。研究影响水稻叶片形态的分子机制,对于利用“源库”理论实现水稻的高产稳产具有重要生物学意义。

关键词：水稻叶片大小叶片卷曲细胞分裂植物激素

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The temporal and spatial distribution of ancient rice in China and its implications

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Chinese Science Bulletin 2007年第8期52卷 1071-1079页

作者： GONG ZiTong chen HongZhao YUAN dagang ZHAO YuGuo WU YunJin ZHANG GanLin State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008China

The relics of ancient rice have been regarded as the most important objective evidence of the origina- tion and spread of rice *** on the records of 280 rice relics sites and the rice cropping regionalization as well as the distribution map of paddy soils,the current study compiled the temporal and spatial distribution map of ancient rice distribution in *** map shows that the distribution of ancient rice is spatially extensive and meantime comparatively concentrated,temporarily covering a long and relatively continuous *** rice relics in the Central China double and single rice cropping regions are among the earliest and the most abundant ones,possessing continuity in time *** with the discovery of ancient rice and paddy filed relics,soil micromorphology, pollen combination and element geochemistry,it is suggested that Central China was the origin center of rice cultivation in *** had been spread to the rest part of China in three major waves,also to the East Asian part like Korea and *** temporal and spatial distribution of ancient rice reflects the past environmental change,which is also meaningful to the current rice regionalization and plan- ning as well as food security in China.

关键词：古代水稻起源时空分布中国

A Preliminary Study on the Diversity of Fish Species and Marine Fish Faunas of the South China Sea

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Journal of Ocean University of China 2008年第2期7卷 210-214页

作者： MA. Caihua YOU Kui ZHANG Meizhao LI Fengqi chen dagang College of Environmental Science and Engineering Ocean University of China Qingdao 266071 P. R. China College of Fisheries Ocean University of China Qingdao 266003 P. R. China

There are 3048 species of fish occurring in the China Seas （CS）, of which at least 2321 species are found in the South China Sea （SCS）, belonging to 35 orders, 236 families and 822 genera. The fish species diversity is analyzed in this paper based on biogeography, biostatistics, fishing methods, etc. It is found that the regional environment, especially biological factors, plays an important role in the distribution of faunas, and there are two fish faunas in the SCS, one in the north and another in the center and south. This regional division is of value for sustainable fishery production and eiTlcient management of fishery resources.

关键词： fish fauna biodiversity cluster analysis marine environment the South China Sea

Study on fishery biology features of spawning group of Pseudopleuronectes yokamae(Gunther) in the Sheath Bay

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Acta Oceanologica Sinica 1991年第3期10卷 471-476页

作者： chen dagang, Liu Chang’anOcean University of Qingdao, Qingdao, ChinaDong GuangjunFusion Aquatic Bureau of Shandong, Shandong, China

Pseudopleuronectes yokamae (Günther) is one of the most important economic fish species in the genus living specially in the northwest Pacific, and is distributed in the southern area of the far east sea of Russia, Japan, Korea, the Huanghai Sea, the Bohai Sea and the northern area of the East China Sea. Usually they live in nearshore waters of these areas as geographic subpopulations. P. yokamae in the Sheath Bay belongs to a local group of the Huanghai-Bohai Sea subpopulation and is distributed in the mouth and adjacent waters of the bay all the year round, and the catch of its spawning group has

关键词： Study on fishery biology features of spawning group of Pseudopleuronectes yokamae Gunther in the Sheath Bay Bay

Fish species diversity in the Huanghe Estuary

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Acta Oceanologica Sinica 2000年第4期19卷 125-135页

作者： chen dagang, Jiao Yan, Liu Qun, Zeng Xiaoqi, Ren Yiping (Department of Fisheries,Ocean University of Qingdao, Qingdao 266003, China.) Department of Fisheries Ocean University of Qingdao Qingdao 266003 China

This paper lists 50 fish specs in the Huanghe Estuary, which belong to 9 orders, 22 families and 37 genera. The paper describes the seasonal distributions of these fish species and the succession of the important fish species during the past 50 a. The authors discuss the main factors that have resulted in the changes in fish species diversity and the fishery resources. These include the overexploitation of the fishery and the sharp reduction in the fresh water discharges from the Huanghe River.

关键词： The Huanghe Estuary fish species diversity fisheries resources

FD-TD Analysis of Electromagnetic Wave Scattering by Infinite Periodic Structure

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Journal of Systems Engineering and Electronics 1997年第3期8卷 1-5页

作者： chen Bin, Fang dagang & Yao Ping Naijing Universit of Science and Technology,210094,P.R.China Nanjing University of Science and Technology 210094 P. R. China

FD TD analysis takes a lot of advantages in dealing with the scattering from complex structures. In this paper, the approach of analyzing the scattering by infinite periodic structures is introduced. A new modified perfectly matched layer absorbing boundary condition is used to facilitate the FD TD modeling. The successful design of infrared/millimeter wave frequency selective surface shows the validity of this technique.

关键词： FD TD modeling Electromagnetic scattering Frequency selective surface.

OsPPG encodes a pseudouridine-5'-phosphate glycosidase and regulates rice spikelet development

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The Crop Journal 2024年第3期12卷 698-708页

作者： Rui chen dagang Tian Yarong Lin Jiaqing Huang Qinqin Yang Yupei Li Huaqing Liu Shaohua Yang Jingyang chen Shufen Zhou Feng Wang Shubiao Zhang Key Laboratory of Genetics Breeding and Multiple Utilization of CropsMinistry of Education/Key Laboratory of Biological Breeding for Fujian and Taiwan CropsMinistry of Agriculture and Rural AffairsFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Fujian Key Laboratory of Genetic Engineering for Agriculture Biotechnology Research InstituteFujian Academy of Agricultural SciencesFuzhou 350003FujianChina Institute of Resources Environment and Soil FertilizerFujian Academy of Agricultural SciencesFuzhou 350013FujianChina

Florets are the basic structural units of spikelets,and their morphogenesis determines the yield and quality of rice ***,whether and how pseudouridine-5’-phosphate glycosidase participates in rice spikelet development remains an open *** this study,we identified a novel gene,OsPPG,which encodes a peroxisome-localized pseudouridine-5’-phosphate glycosidase and regulates the development of rice *** mutants exhibited abnormal sterile lemma,lemma,palea,lodicule,stamens,and pistils;male sterility;shorter panicles;and reduced plant *** was found to regulate several OsMADS genes,thereby affecting the morphogenesis of rice ***,metabolomics revealed that the OsPPG gene was involved in the decomposition of pseudouridine via the pyrimidine metabolism pathway and may affect the jasmonic acid signaling *** results suggest that OsPPG is a key regulator of rice spikelet development.

关键词： OsPPG Reproductive regulation Spikelet development Rice

Effect of fatigue load on the bending tribo-corrosion-fatigue behaviors between the main cable wires

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Friction 2024年第7期12卷 1512-1531页

作者： Bo WANG dagang WANG Jihong YE Liang TANG Hailang CHONG Wei XU Xinxin ZHANG Jianhao chen Haiyan DENG Jie ZHANG Guowen YAO Magd Abdel WAHAB School of Mechatronic Engineering China University of Mining and TechnologyXuzhou 221116China Xuzhou Key Laboratory for Fire Safety of Engineering Structures China University of Mining and TechnologyXuzhou 221116China National Wire Rope Quality Inspection Center Nantong Product Quality Supervision and Inspection InstituteNantong 226011China Jiangsu Langshan Wire Rope Co. Ltd.Nantong 226003China School of Mechatronic Engineering Southwest Petroleum UniversityChengdu 610500China School of Civil Engineering Chongqing Jiaotong UniversityChongqing 400074China Soete Laboratory Faculty of Engineering and ArchitectureGhent UniversityZwijnaarde B-9052Belgium

The main cable bent around the saddle of the suspension bridge is subjected to the wind,the vehicle,the bridge’s own weight and the corrosive *** coupling of the three loads and the environments causes the friction,the corrosion,and the fatigue(tribo-corrosion-fatigue)among the wires inside the main *** this paper,a wire bending tribo-corrosion-fatigue test rig was designed and *** effect of fatigue load on the bending friction behaviors between the cable wires in ultrapure water and 3.5%NaCl solution was *** tribological properties and electrochemical corrosion behaviors under different fatigue loading ranges were *** tribo-corrosion-fatigue interaction between the cable wires was quantitatively characterized,and the mechanism of the interaction was *** results demonstrate that the increasing fatigue load exacerbates the coupling damage of the cable wires attributed to the enhanced *** findings carry theoretical importance when assessing the main cable’s deterioration and the load-bearing safety of a suspension bridge.

关键词： bending tribo-corrosion-fatigue interaction parallel steel wires fatigue load

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沧东断裂的地质结构分析

石油学报 1989年第1期10卷 20-26页

作者：陈大贤大港石油管理局物探公司

中国东部著名的沧东断裂长达230千米,具有石油地质意义的是从南皮至塘沽段(中段),长145千米。横穿沧东断裂的地震测线有110多条。地震剖面上的断面反射波结构主要有四种类型:(1)勺形、(2)椅形、(3)阶形、(4)坎形。它们的成因解释如下,... 详细信息

中国东部著名的沧东断裂长达230千米,具有石油地质意义的是从南皮至塘沽段(中段),长145千米。横穿沧东断裂的地震测线有110多条。地震剖面上的断面反射波结构主要有四种类型:(1)勺形、(2)椅形、(3)阶形、(4)坎形。它们的成因解释如下,勺形—张性扭动造成,或剪切面被湖水侵蚀造成。椅形—上升盘前新生界不同岩性遭受湖水溶蚀差异造成。阶形—上升盘前新生界岩块滑塌造成。坎形—隆起上基岩向凹陷逆推造成。沧东断裂在中新生代时期的应力活动方式表现为右旋性质。根据探井和地震资料编制的前第三系古地质图,表明沧东断裂发生在一个古生代背斜脊部上。其核部在兴济至北桃杏之间,背斜一半在沧县隆起上,另一半在沧东凹陷内;轴向NNE22°左右,与沧东断裂走向呈小角度剪刀形。沧东断裂面宽5～13千米;其上可供油气勘探的面积达一千多平方千米。主要圈闭类型有:(1)断面上基岩潜山、(2)断阶上的逆牵引、(3)断面下的推覆体、(4)断崖上的冲积扇、(5)断棱上的残丘山等。目前已找到数十个这样的圈闭。

关键词：断裂油气勘探地质结构