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Expression Analysis of miRNAs and Highly-expressed Small RNAs in Two Rice Subspecies and their Reciprocal Hybrids

Journal of Integrative Plant Biology 2010年第11期52卷 971-980页

作者： Fangfang chen Guangming He Hang He Wei chen Xiaopeng Zhu Manzhong Liang liangbi chen Xing Wang Deng Graduate Program in Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730China National Institute of Biological Sciences Zhongguancun Life Science ParkBeijing 102206China Department of Molecular Cellular and Developmental BiologyYale UniversityNew HavenConnecticut 06520USA Peking-Yale Joint Center of Plant Molecular Genetics and Agrobiotechnology College of Life SciencesPeking UniversityBeijing 100871China Institute of Biophysics the Chinese Academy of SciencesBeijing 100101China Department of Botany College of Life SciencesHunan Normal UniversityChangsha 410081China

Heterosis,or hybrid vigor,is the phenomenon whereby progeny of two inbred lines exhibit superior agronomic performance compared with either *** analyzed the expression of miRNAs and highly expressed small RNAs （defined according to Solexa sequencing results） in two rice （Oryza sativa） subspecies （japonica *** and indica cv.93-11） and their reciprocal hybrids using *** found that of all the 1141 small RNAs tested,140 （12%,140 of 1141） and 157 （13%,157 of 1141） were identified being significantly differentially expressed in two reciprocal hybrids,*** possible modes of action,including additive,high-and low-parent,above high-and below low-parent modes were *** F1 hybrids showed non-additive expression patterns,with downregulation ***,15 miRNAs displayed stark opposite expression trends relative to midparent in reciprocal *** prediction of targets of differentially expressed miRNAs showed that they participated in multifaceted developmental pathways,and were not distinguishable from the targets of non-differentially expressed ***,our findings reveal that small RNAs play roles in heterosis and add a new layer in the understanding and exploitation of molecular mechanisms of heterosis.

关键词： Heterosis Hybrids Exhibitions Parents RNA Additives

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Exploring the genetic characteristics of 93-11 and Nipponbare recombination inbred lines based on the Golden Gate SNP assay

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Science China(Life Sciences) 2016年第7期59卷 700-707页

作者： Renbo Yu Wei Yan Manzhong Liang Xiaojun Dai Haodong chen Yunong Sun Xingwang Deng Xiangding chen Hang He liangbi chen College of Life Sciences Hunan Normal University State Key Laboratory of Protein and Plant Gene Research Peking-Tsinghua Center for Life Sciences School of Advanced Agriculture Sciences and School of Life Sciences Peking University College of Life Sciences Capital Normal University

Understanding genetic characteristics in rice populations will facilitate exploring evolutionary mechanisms and gene cloning. Numerous molecular markers have been utilized in linkage map construction and quantitative trait locus （QTL） mappings. However, segregation-distorted markers were rarely considered, which prevented understanding genetic characteristics in many populations. In this study, we designed a 384-marker GoldenGate SNP array to genotype 283 recombination inbred lines （RILs） derived from 93-11 and Nipponbare Oryza sativa crosses. Using 294 markers that were highly polymorpbic between parents, a linkage map with a total genetic distance of 1,583.2 cM was constructed, including 231 segregation-distorted mark- ers. This linkage map was consistent with maps generated by other methods in previous studies. In total, 85 significant quanti- tative trait loci （QTLs） with phenotypic variation explained （PVE） values〉5% were identified. Among them, 34 QTLs were overlapped with reported genes/QTLs relevant to corresponding traits, and 17 QTLs were overlapped with reported sterili- ty-related genes/QTLs. Our study provides evidence that segregation-distorted markers can be used in linkage map construc- tion and QTL mapping. Moreover, genetic information resulting from this study will help us to understand recombination events and segregation distortion. Furthermore, this study will facilitate gene cloning and understanding mechanism of in- ter-subspecies hybrid sterility and correlations with important agronomic traits in rice.

关键词： GoldenGate SNP assay linkage map segregation-distorted markers QTLs

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FERONIA Receptor Kinase Controls Seed Size in Arabidopsis thaliana

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Molecular Plant 2014年第5期7卷 920-922页

作者： Feng Yu Jian Li Yuan Huang Li Liu Dongping Li liangbi chen Sheng Luan College of Life Sciences Hunan Normal University Changsha 410081 RR. China Hunan Province Key Laboratory of Plant Functional Genomics andDevelopmental Regulation Hunan University Changsha 410082 RR. China Department of Plant and Microbial Biology University of California Berkeley CA 94720 USA

Dear Editor, Plants have evolved elaborate mechanisms by which cell elongation regulation is coupled to the environmental signals. The plasma membrane receptor kinase FERONIA （FER） has emerged as an important regulatory node in controlling cell elongation and hormone crosstalk （Guo et al., 2009; Deslauriers and Larsen, 2010; Duan et al., 2010; Yu et al.,

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Natural variation of H3K27me3 modification in two Arabidopsis accessions and their hybrid

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Journal of Integrative Plant Biology 2016年第5期58卷 466-474页

作者： Mei Yang Xuncheng Wang Hao Huang Diqiu Ren Yan'e Su Pan Zhu Danmeng Zhu Liumin Fan liangbi chen Guangming He Xing Wang Deng State Key Laboratory of Protein and Plant Gene Research Peking-Tsinghua Center for Life Sciences School of Advanced Agricultural Sciences and School of Life Sciences Peking University Tsinghua-Peking Joint Center for Life Sciences School of Life SciencesTsinghua University Department of Botany College of Life Sciences Hunan Normal University

Histone modifications affect gene expression, but the mechanism and biological consequence of natural variation in histone modifications remain unclear. Here, we generated genome-wide integrated maps of H3K27me3 modification and transcriptome for Col, C24 and their F1 hybrid. A total of 1,828 genomic regions showing variation in H3K27me3 modification between Col and C24 were identified, most of which were associated with genic regions. Natural variation of H3K27me3 modification between parents could result in aUelic bias of H3K27me3 in hybrids. Furthermore, we found that H3K27me3 variation between Col and C24 was negatively correlated with gene expression differences between two accessions, espe- cially with those arising from the cis-effect. Importantly, mutation of CLF, an Arabidopsis methyltransferase for H3K27,altered gene expression patterns between the parents. Together, these data provide insights into natural variation of histone modifications and their association with gene expression differences between Arabidopsis ecotypes.

关键词： Allelic bias Arabidopsis gene expression H3K27me3 natural variation

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Characterization of grain cadmium concentration in indica hybrid rice

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Frontiers of Agricultural Science and Engineering 2020年第4期7卷 523-529页

作者： Kai WANG Qunfeng ZHOU Tianze YAN Shilong XU Longyi ZHAO Weicheng WANG Zhigang JIN Peng QIN chenjian FU liangbi chen Yuanzhu YANG Key Laboratory of Southern Rice Innovation&Improvement Ministry of Agriculture and Rural AffairsYuan Longping High-Tech Agriculture Co.Ltd.Changsha 410000China Department of Botany College of Life SciencesHunan Normal UniversityChangsha 410081China Hunan Engineering Laboratory for Disease and Pest Resistant Rice Breeding Yahua Seeds Science Academy of HunanChangsha 410000China Seed Management Service Station of Hunan Changsha 410000China

As a consequence of contamination of soil with heavy metals,cadmium accumulation in grain is of great concern worldwide,but especially in southern *** is important to evaluate the Cd accumulation potential of grain before or when examining and approving new *** evaluation method and criteria for verifying Cd accumulation potential in rice are proposed,and the Cd accumulation potential of 56 mid-season indica hybrids collected from the provincial cultivar trials in 2016 were ***,environment and their interactions strongly affected the variation in grain Cd *** hybrids were identified as slightly Cd *** with slight Cd accumulation potential would be suitable for safe grain production on polluted land(total Cd under 2.0 mg$kg–1)in Hunan Province(China)and should be considered for new cultivar evaluation and *** evaluation method and criterion could be applied for certifying Cd accumulation potential of rice cultivars.

关键词： accumulation cadmium hybrid methodology rice

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Ectopic expression of fungal EcGDH improves nitrogen assimilation and grain yield in rice

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Journal of Integrative Plant Biology 2018年第2期60卷 85-88页

作者： Dongying Tang Yuchong Peng Jianzhong Lin Changqing Du Yuanzhu Yang Dan Wang Cong Liu Lu Yan Xiaoying Zhao Xia Li liangbi chen Xuanming Liu College of Life Sciences Hunan Normal University Changsha 410081 China Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Biology Hunan University Changsha 410082 China Academy of Seed Industry of Hunan Yahua Changsha 410001 China

NADP（H）-dependent glutamate dehydrogenases（GDH） in lower organisms have stronger ammonium affinity than those in higher plants. Here we report that transgenic rice overexpressing the EcGDH from Eurotium cheralieri exhibited significantly enhanced aminating activities. Hydroponic and field tests showed that nitrogen assimilation efficiency and grain yields were markedly increased in these transgenic plants, especially at the low nitrogen *** results suggest that EcGDH may have potential to be used to improve nitrogen assimilation and grain yield in rice.

关键词： GDH Ectopic expression of fungal EcGDH improves nitrogen assimilation and grain yield in rice

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茶粉/聚丙烯复合材料自然老化性能

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复合材料学报 2016年第7期33卷 1437-1445页

作者：龚新怀陈良壁武夷学院生态与资源工程学院武夷山354300 闽北竹产业公共技术创新服务平台武夷山354300 福建省生态产业绿色技术重点实验室武夷山354300

为高值化利用茶产业剩余物,拓宽木塑复合材料中植物纤维来源,以茶粉(TD)为有机增强相,聚丙烯(PP)为基体,采用开炼-注塑工艺制备了TD/PP复合材料;为研究其户外应用及老化机制,采用户外自然老化形式考察了老化时间对TD/PP复合材料力学性... 详细信息

为高值化利用茶产业剩余物,拓宽木塑复合材料中植物纤维来源,以茶粉(TD)为有机增强相,聚丙烯(PP)为基体,采用开炼-注塑工艺制备了TD/PP复合材料;为研究其户外应用及老化机制,采用户外自然老化形式考察了老化时间对TD/PP复合材料力学性能、材色及表面形貌的影响,并用FTIR分析了其老化机制。结果表明:与木材纤维相比,TD中纤维素含量更少,而各种形式的抽提物含量要高很多,纤维长径比更小。户外自然老化8个月后,TD/PP复合材料的亮度变化值、红绿轴色品指数变化值、黄蓝轴色品指数变化值及色差值分别为37.64、-10.40、-3.38和39.19;TD/PP复合材料的弯曲、缺口冲击强度、弯曲模量及硬度值分别降低了38.7%、42.4%、41.4%和9.14%。FTIR分析表明,在户外自然老化环境中,TD/PP复合材料中的PP分子链和TD中木质素组分发生了光照降解。SEM照片显示,随户外自然老化时间延长,TD/PP复合材料表面出现裂纹,且裂纹数量逐渐增多,深度和宽度增大,并且局部地方出现粉化现象。

关键词：茶粉聚丙烯复合材料自然老化力学性能颜色变化

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茶粉/聚丙烯复合材料加速老化性能

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农业工程学报 2015年第11期31卷 308-314页

作者：龚新怀赵升云陈良璧武夷学院生态与资源工程学院武夷山354300 闽北竹产业公共技术创新服务平台武夷山354300 福建省生态产业绿色技术重点实验室武夷山354300

为高值化利用茶产业剩余物资源,拓宽木塑复合材料中植物纤维来源,以废弃茶梗(tea stalk,TS)为有机填料,与聚丙烯(Polypropylene,PP)制备了TS/PP复合材料;同时为研究其户外应用和老化机制,考察了冻融循环老化对TS/PP复合材料力学性能、... 详细信息

为高值化利用茶产业剩余物资源,拓宽木塑复合材料中植物纤维来源,以废弃茶梗(tea stalk,TS)为有机填料,与聚丙烯(Polypropylene,PP)制备了TS/PP复合材料;同时为研究其户外应用和老化机制,考察了冻融循环老化对TS/PP复合材料力学性能、材色及热性能的影响,并用傅里叶红外光谱(Fourier transform infrared spectrum,FTIR)、扫描电镜(scanning electronic microscopy,SEM)等分析了复合材料的化学结构、表面形貌及老化机制。结果表明:在经历12次冻融循环老化后,复合材料的弯曲强度、缺口冲击强度、弯曲模量及硬度值保留率分别为28.9%、40.1%、34.5%和86.5%,复合材料的亮度变化值(△L*)、红绿轴色品指数变化值(△a*)、黄蓝轴色品指数变化值(△b*)及色差值△E分别为16.41、2.80、9.03和18.93;复合材料维卡软化点(vicat softing point,VSP)下降了2.9℃,茶粉组分的最快热降解温度降低了4℃;茶粉中木素苯环结构红外吸收峰强度减弱甚至消失,表明在冻融循环老化中茶粉中木素成分发生了降解。SEM显示随冻融循环次数增加,TS/PP复合材料表面裂纹数量增多,裂纹深度和宽度增大,甚至出现交叉裂纹。该研究结果可为进一步探索茶塑复合材料制备及老化规律,提供试验数据和理论参考。

关键词：复合材料聚丙烯傅里叶红外光谱茶梗冻融循环加速老化

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碳热还原制备单晶TiC纳米纤维

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化工新型材料 2015年第8期43卷 75-77,86页

作者：赵瑨云陈良壁武夷学院生态与资源工程学院福建省高校绿色化工技术重点实验室武夷山354300

钛酸四丁酯为前驱体,醋酸纤维素(CA)为载体,N,N-二甲基甲酰胺(DMF)/丙酮1∶2(v/v)为溶剂,通过静电方法制备直径为(678±154)nm TiO2/CA复合纳米纤维。在0.1mol/L NaOH/乙醇中水解,TiO2/CA复合纳米纤维转变为TiO2/纤维素复合纳米纤维。... 详细信息

钛酸四丁酯为前驱体,醋酸纤维素(CA)为载体,N,N-二甲基甲酰胺(DMF)/丙酮1∶2(v/v)为溶剂,通过静电方法制备直径为(678±154)nm TiO2/CA复合纳米纤维。在0.1mol/L NaOH/乙醇中水解,TiO2/CA复合纳米纤维转变为TiO2/纤维素复合纳米纤维。在氩气条件下通过碳热还原TiO2/纤维素纤维制备得到单晶TiC纳米纤维。通过扫描电镜、透射电镜和XRD表征纤维的形貌及其晶相组成。实验结果表明:1000℃煅烧得到直径为(424±65)nm纤维,且每根纤维由许多具有规整晶体外形的颗粒堆积而成。温度升高纤维发生一定程度的熔融粘接。XRD表明纤维为立方晶系TiC结构。选区电子衍射出现明显周期排列的二维衍射点,表明制备的TiC为单晶。

关键词：碳化钛单晶纳米纤维碳热还原

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半-IPN羧甲基纤维素/聚(丙烯酰胺-共-甲基丙烯酸钠)水凝胶制备及其吸附性能

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环境工程学报 2015年第11期9卷 5243-5248页

作者：张敏李碧婵陈良壁福建省高校绿色化工技术重点实验室武夷学院生态与资源工程学院武夷山354300

羧甲基纤维素(CMC)水溶液中,通过自由基共聚制备半-互穿网络(IPN)羧甲基纤维素(CMC)/聚(丙烯酰胺-共-甲基丙烯酸钠)(poly(AAm-co-NMR))水凝胶。研究CMC含量对半-IPN水凝胶溶胀率及对甲基紫的吸附性能影响。IPN-0.25、IPN-0.50和IPN-1.0... 详细信息

羧甲基纤维素(CMC)水溶液中,通过自由基共聚制备半-互穿网络(IPN)羧甲基纤维素(CMC)/聚(丙烯酰胺-共-甲基丙烯酸钠)(poly(AAm-co-NMR))水凝胶。研究CMC含量对半-IPN水凝胶溶胀率及对甲基紫的吸附性能影响。IPN-0.25、IPN-0.50和IPN-1.00对甲基紫的平衡吸附容量分别为111.0、182.3和237.6 mg/g。分别采用拟一级、拟二级和粒内扩散模型拟合实验数据,结果表明,拟二级动力学模型最符合该体系,其相关系数R2最高,说明水凝胶对甲基紫的吸附主要为化学吸附。

关键词：羧甲基纤维素聚(丙烯酰胺-共-甲基丙烯酸钠) 半-IPN水凝胶吸附

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