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BAK1 Directly Regulates Brassinosteroid Perception and BRI1 Activation

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Journal of Integrative Plant Biology 2013年第12期55卷 1264-1270页

作者： Kai He shengbao xu Jia Li Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou University

Plants utilize plasma membrane-localized receptor-like kinases （RLKs） to sense extracellular signals to coordinate growth, development, and innate immune responses. BAK1 regulates multiple signaling pathways acting as a co-receptor of several distinct ligand-binding RLKs. It has been debated whether BAK1 serves as an essential regulatory component or only a signal amplifier without pathway specificity. This issue has been clarified recently. Genetic and structural analyses indicated that BAK1 and its homologs play indispensible roles in mediating brassinosteroid （BR） signaling pathway by directly perceiving the ligand BR and activating the receptor of BR, BRII. The mechanism revealed by these studies now serves as a paradigm for how a pair of RLKs can function together in ligand binding and subsequent initiation of signaling.

关键词： Arabidopsis BAK1 brassinosteroid BRI1 co-receptor extracellular domain leucine-rich repeat receptor receptor-like kinase.

Molecular dissection of plant height QTLs using recombinant inbred lines from hybrids between common wheat (Triticum aestivum L.) and spelt wheat (Triticum spelta L.)

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Chinese Science Bulletin 2011年第18期56卷 1897-1903页

作者： LIU Gang xu shengbao NI ZhongFu XIE ChaoJie QIN DanDan LI Jing LU LaHu ZHANG JinPing PENG HuiRu SUN QiXin State Key Laboratory for Agrobiotechnology College of Agronomy and Biotechnology Key Laboratory of Crop Genomics and Genetic Improvement of Ministry of Agriculture Beijing Key Laboratory of Crop Genetic Improvement Key Laboratory of Crop Heterosis Research and Utilization of Minixtry of Education China Agricultural University Beijing 100193 China

In wheat, plant height is an important agronomic trait, and a number of quantitative trait loci (QTLs) controlling plant height have been located. In this study, using the conditional and unconditional QTL mapping methods, combined with data from five different growth stages over two years of field trials, the developmental behavior for plant height in wheat was dissected. Nine unconditional QTLs and 8 conditional QTLs were identified, of which 6 were detected by both methods. None of the 11 QTLs was detected at all of the 5 investigated developmental stages, but 7 QTLs were detected at certain stages in both years. Further analysis identified 9 unconditional QTLs at different stages, which could explain the phenotypic variation from 4.81% to 17.35%. It was noteworthy that one major QTL designated QHt-4B-2, which was located on chromosome 4B, was detected on May 18 and 25 in both years, and its genetic contributions to plant height ranged from 13.42% to 16.13%. Moreover, of the 8 conditional QTLs identified, six were detected in both years, in the order of QHt-3B→QHt-4B-1→QHt-4B-2→QHt-4D→QHt-5A and QHt-2B expressed at the same developmental stage. The results indicate that QTL expression during plant height development is selective and in a temporal order.

关键词： QTL检测小麦株高普通小麦重组自交系拼写分子杂交数量性状位点

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小麦种子活力相关性状全基因组关联分析

四川农业大学学报 2024年第2期42卷 277-284,305,I0001,I0002页

作者：吴沁烜石冰欣刘子辉赖瑶张园园伍雨李执李阳王际睿朱晓菲许盛宝蒲至恩四川农业大学农学院成都611130 保定学院河北保定071000 成都市鹃农智慧农业科技发展有限公司成都611730 西北农林科技大学陕西杨凌712100

【目的】鉴定控制小麦种子活力相关性状位点,发掘相关候选基因,为高活力品种提高理论基础。【方法】以404份遗传背景广泛的小麦为试验材料,对11个种子活力相关性状进行测定,结合基因型信息与活力相关性状参数进行全基因组关联分析。【... 详细信息

【目的】鉴定控制小麦种子活力相关性状位点,发掘相关候选基因,为高活力品种提高理论基础。【方法】以404份遗传背景广泛的小麦为试验材料,对11个种子活力相关性状进行测定,结合基因型信息与活力相关性状参数进行全基因组关联分析。【结果】鉴定出28个与小麦种子活力相关性状的显著关联位点。【结论】发现2个控制小麦种子活力潜在新位点,在这2个位点共检测到80个与种子活力相关的候选基因,其中,TraesCS4A01G020000.1编码LEA蛋白基因和TraesCS5B01G298500.1编码解螺旋酶基因,在种子中特异表达,与种子活力高度相关。

关键词：小麦种子活力全基因组关联分析

S-nitrosoglutathione reductase gene GSNOR,a maternal gene,plays an essential role in regulating Arabidopsis female gametophyte development

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S-nitrosoglutathione reductase gene GSNOR,a maternal gene,pl...

西北农林科技大学小麦多组学数据库的构建与应用

2018全国植物生物学大会

作者： Junzhe Wang Elizabeth Vierling shengbao xu State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy Northwest A&F University Department of Biochemistry and Molecular Biology University of Massachusetts-Amherst

Floral organs are important for plant reproductive growth and seeds *** Arabidopsis,nitric oxide(NO) accumulates and reproductive growth is severely damaged when subjecting to ***,it is still unclear about the regulation mechanism of NO metabolism on floral ***,we identified two GSNOR null alleles hot5-2 and hot5-4,which accumulate a large amount of NO and show obviously fertility *** reciprocal crosses,we found that the fertility defects come from the *** hot5 ovules,NO specially accumulated in nucellus as well as adjacent endothelium,causing the repressed degeneration of nucellus and the delayed development of female gametophyte,which affects plant ***,genetic analysis revealed that GSNOR is a maternal gene,not directly participate in gametophyte ***,the subcellular localization results show that GSNOR specially expressed in nucellus and other maternal tissuesof ovules rather than the female gametophyte,implicating GSNOR controls NO balance in ovules to regulate nucellus degeneration and female gametophyte ***,all the fertility defects can be rescued by complement expression of GSNOR gene,suggesting GSNOR is essential for the fertility of ***,our results suggest that GSNOR is a maternal gene,regulating the nucellus degeneration and the female gametophyte development by controlling the level of NO in ovules,provides an important molecular mechanism for studying plant infertility especially under stress.

关键词： fertility defects maternal GSNOR gene nucellus degeneration female gametophyte development

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西北农业学报 2024年第6期33卷 1019-1028页

作者：路田刘子辉赵鹏邱四春王晓明郑炜君韩德俊毛虎德宋卫宁陈新宏奚亚军王中华吉万全康振生许盛宝西北农林科技大学农学院陕西杨凌712100 西北农林科技大学旱区作物逆境生物学国家重点实验室陕西杨凌712100 西北农林科技大学植保学院陕西杨凌712100

本研究在大规模根系转录组分析的基础上,获得406份全球遗传多样性丰富的小麦种质的基因型数据,并通过对18个农艺性状在10个种植环境中的系统调查,获得对应的表型数据。实验室前期评估证实表型与基因型数据可靠,可应用于小麦研究。同时,... 详细信息

本研究在大规模根系转录组分析的基础上,获得406份全球遗传多样性丰富的小麦种质的基因型数据,并通过对18个农艺性状在10个种植环境中的系统调查,获得对应的表型数据。实验室前期评估证实表型与基因型数据可靠,可应用于小麦研究。同时,整合基因型、转录组、表型与栽培环境的气象数据,建立了一个可在网站(https://***/resource)自由下载与利用的小麦多组学数据库,为小麦功能基因的挖掘与机理研究提供支持。

关键词：小麦多组学数据库基因型表现型

LiOH-mediated crystallization regulating strategy enhancing electrochemical performance and structural stability of SiO anodes for lithium-ion batteries

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Nano Research 2024年第9期17卷 8174-8183页

作者： Zhengqiu He Zewen xu Yu Long Jiexin Zhu Hao Yang Kuo Chen Qiang Zhou Ning Cao Xiaobo Wang Juan Wang Xiaojie Tan Litao Wang Luhai Wang shengbao He Mengdi Zhang Han Hu Mingbo Wu State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore School of Chemical Sciences University of AucklandAuckland 1010New Zealand Petrochemical Research Institute Petro China Company Ltd.Beijing 102206China

Silicon monoxide(SiO)is widely recognized as a promising anode material for next-generation lithium-ion *** to its metastable amorphous structure,SiO exhibits a highly complex degree of crystallization at the microscopic level,which significantly influences its electrochemical *** a consequence,accurately regulating the crystallization of SiO,and further establishing the relationship between crystallinity and electrochemical performance are very critical for SiO *** this article,carbon-coated SiO materials with different crystallinity degrees were synthesized using lithium hydroxide monohydrate(LiOH·H_(2)O)as a structural modifier to reveal this ***,moderate amount of LiOH·H_(2)O addition results in the forming of an oxygen-rich shell,which effectively inhibits the inward migration of oxygen atoms on the SiO surface and suppresses volume ***,the crystallinity of SiO will gradually enhance and the crystalline phase appears with increasing the amount of LiOH·H_(2)O,which will generate a deteriorative Li+diffusion *** balancing the above two contradictions,a mass fraction of 1%LiOH·H_(2)O for the additive yielded SiO@C-1,characterized by optimal ***@C-1 demonstrates exceptional long-cycle stability with 74.8%capacity retention after 500 cycles at 1 A·g^(-1).Furthermore,it achieves a capacity retention of 52.2%even at a high density of 5 A·g^(-1).This study first reveals the relationship between SiO crystallinity and electrochemical performance,which efficiently guides the design of high-performance SiO anodes.

关键词： lithium-ion batteries SiO anodes crystallinity regulation high rate long life

Molecular mapping of QTLs for root response to phosphorus deficiency at seedling stage in wheat (Triticum aestivum L.)

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Progress in Natural Science:Materials International 2007年第10期17卷 1177-1184页

作者： Li Zhenxing, Ni Zhongfu, Peng Huiru, Liu Zhiyong, Nie Xiuling, xu shengbao, Liu Gang and Sun Qixin(Key Laboratory of Crop Heterosis and Utilization and State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Genomics and Genetic Improvement, Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics & Breeding, China Agricultural University, Beijing 100094, China) Key Laboratory of Crop Heterosis and Utilization Department of Plant Genetics and Breeding China Agricultural University Beijing 100094 China Key Laboratory of Crop Genomics and Genetic Improvement Department of Plant Genetics and Breeding China Agricultural University Beijing 100094 China Beijing Key Laboratory of Crop Genetic Improvement Department of Plant Genetics and Breeding China Agricultural University Beijing 100094 China

Phosphorus (P) deficiency in the soil is one of the major abiotic stresses that limit plant growth and crop productivity throughout the world. Development of cultivars with improved P-deficiency tolerance is an efficient strategy for sustainable agriculture. Plant roots play an important role in crop growth and development, especially in nutrient uptake and improvement of P-efficiency. Mapping quantitative trait loci (QTLs) for root traits and their response to low P stress at seedling stage will facilitate the development of P-efficient wheat cultivars. In this study, 30 QTLs (LOD>2.0) were mapped for the three root traits, such as root length, root number and root dry matter under different P supply conditions and their response to P-stress. These QTLs were distributed on 14 chromosomes, with each of the 5 QTLs explaining more than 10% phenotype variance. Analyses showed that root traits and their response to P-deficiency were controlled by different QTLs. In addition, alleles with positive effects were separated on both parents, and wheat cultivars with improved P-efficiency could be developed by accumulating these positive effect alleles together.

关键词： QTLs roots wheat seedling RIL P-deficiency.

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基于改进级联R-CNN的面料疵点检测方法

现代纺织技术 2022年第2期30卷 48-56页

作者：许胜宝郑飂默袁德成沈阳化工大学计算机科学与技术学院沈阳110142 沈阳化工大学信息工程学院沈阳110142 中国科学院沈阳计算技术研究所沈阳110168 沈阳中科数控技术股份有限公司沈阳110168

由于布匹疵点种类分布不均,部分疵点具有极端的宽高比,而且小目标较多,导致检测难度大,因此提出一种改进级联R-CNN的布匹疵点检测方法。针对小目标问题,在R-CNN部分采用在线难例挖掘,加强对小目标的训练;针对布匹疵点极端的长宽比,在特... 详细信息

由于布匹疵点种类分布不均,部分疵点具有极端的宽高比,而且小目标较多,导致检测难度大,因此提出一种改进级联R-CNN的布匹疵点检测方法。针对小目标问题,在R-CNN部分采用在线难例挖掘,加强对小目标的训练;针对布匹疵点极端的长宽比,在特征提取网络中采用了可变形卷积v2来代替传统的正方形卷积,并结合布匹特征重新设计边界框比例。最后采用完全交并比损失作为边界框回归损失,获取更精确的目标边界框。结果表明:对比改进前的模型,改进后的模型预测边界框更加精确,对小目标的疵点检测效果更好,在准确率上提升了3.57%,平均精确度均值提升了6.45%,可以更好地满足面料疵点的检测需求。

关键词：级联R-CNN 面料疵点检测可变形卷积v2 在线难例挖掘完全交并比损失

Proteomics approach to identify abscisic acid inducible plasma membrane proteins in rice roots

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Proteomics approach to identify abscisic acid inducible plas...