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Application of High-Hydroscopicity Seed-Coating Material in Dry-Raised Scattered-Transplantation Rice Xu Maolin,Zhang Hongxi,Huang Niansheng,Liu Xiaojing,Dai Zhengyuan,Kong Xiangdou,Zhao Buhong,Tan Changle Chinese Journal of Rice Science    Abstract （17676）      PDF （469KB）（2564）       Knowledge map    Save Rice seeds were coated with high-hydroscopicity seed coating material and sowed in dry-raisingseedling bed without seed-soaking and pregermination. The treatment of high-hydroscopicity resin seed-coatingmaterial can fornl a water-stored ball of about 1. 8 cm × 1. 5 cm × 1. 2 cm around seed and root, the ball has the abilities of absorbing, keeping and providing water. As the ball containing pesticide, germicide and plant regulatorand releasing slowly, it may afford a suitable surroundings for germination and seedling growth. The procedure cannot only enhance emergence and seedling rate, prevent diseases, pests and died seedlings, strengthen root system, improve seedling qualities, but also can scatter dry-raised seedlings with more soil, improve seedling-standing speed and resist to planting injury, increase the yield of dry-raised scattered-transplantation rice. Related Articles | Metrics | Comments（0）

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Site-Directed Mutagenesis and Functional Analysis of hrcU Gene from Rice Pathogen Xanthomonas oryzae pv. oryzae LIU Xi-ling, ZOU Hua-song,ZOU Li-fang, CHEN Gong-you Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2010.04.003 Abstract （15902）      PDF （672KB）（3410）       Knowledge map    Save The hrp gene cluster is composed of 27 members in rice pathogen Xanthomonas oryzae pv. oryzae(Xoo). To analyze the function of hrcU gene, the hrcU gene was knocked out by allelic exchange. The resulting hrcU mutant lost the pathogenicity in rice and the ability to trigger hypersensitive response in nonhost plant tobacco. The sole hrcU gene fully restored the phenotypic alterations in pathogenicity in rice, hypersensitive response in tobacco, and bacterial growth in rice. Western blot displayed that the typeⅢ secretion system was destroyed in hrcU mutant in which the T3S effectors Hpa1 could not be secreted into extracellular. This indicates that the hrcU gene of Xoo was essential for type Ⅲ secretion system to deliver effectors into plants. Reference | Related Articles | Metrics | Comments（0）

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Molecular Analysis of Rice CIPKs Involved in Biotic and Abiotic Stress Responses CHEN Xi-feng,GU Zhi-min,LIU Feng,MA Bo-jun,ZHANG Hong-sheng Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2010.06.002 Abstract （15581）      PDF （3888KB）（4415）       Knowledge map    Save Plant calcineurin Blike (CBL) proteins have been proposed as important Ca2+ sensors and specifically interact with CBLinteracting protein kinases (CIPKs) in plantspecific calcium signaling. We identified and isolated 15 CIPK genes in japonica rice variety Nipponbare based on the predicted sequences of rice CIPK gene family. Gene structure analysis showed that these 15 genes were divided into intronless and intronrich groups, in which OsCIPK3 and OsCIPK24 exhibit alternative splicing. The phylogenetic analysis indicated that rice CIPKs share an ancestor with Arabidopsis and poplar CIPKs. Analysis of gene expression showed that these OsCIPK genes were differentially induced by biotic stress (bacterial blight, BB) and abiotic stresses, including heavy metal (Hg2+), high salt, cold and ABA. Interestingly, five OsCIPK genes (OsCIPK1, OsCIPK2, OsCIPK10, OsCIPK11 and OsCIPK12) were transcriptionally upregulated after BB infection, among which four OsCIPK genes (OsCIPK2, OsCIPK10, OsCIPK11 and OsCIPK14) were induced by all treatments, indicating that some of OsCIPKs were involved in multiple stress response pathways in plants. The findings suggest that CIPKs play a key role in both biotic and abiotic stress responses. Reference | Related Articles | Metrics | Comments（0）

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Pollen Development and Its Stages in Rice (Oryza sativa L.) FENG Jiu-huan,LU Yong-gen,LIU Xiang-dong,XU Xue-bin Chinese Journal of Rice Science    Abstract （14934）      PDF （349KB）（5789）       Knowledge map    Save By using techniques of intact fresh anther observation, isolated male cell observation and semi thin section, an extensively cytological study was conducted on the pollen development of IR36, an indica cultivar. The results showed that the wholly developmental process could be tentatively divided into eight stages, i.e. microspore mother cell formation stage, microspore mother cell meiosis stage,early microspore stage, middle microspore stage, late microspore stage, early bicellular pollen stage,late bicellular pollen stage and mature pollen stage. The experiment proved that there was not contraction stage in naturally developmental process of the microspores. During the pollen developing, the tapetal cells underwent three types of morphological changes, which help to identify the stages of pollen development. Related Articles | Metrics | Comments（0）

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Dissection of QTLs for Hull Silicon Content on the Short Arm of Rice Chromosome 6 WU Ji-rong,FAN Fang-jun,DU Jing-hong,FAN Ye-yang,ZHUANG Jie-yun* Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2010.01.03 Abstract （13965）      PDF （1333KB）（3387）       Knowledge map    Save The dissection of the QTL qHUS6 for hull silicon content in rice which was previously located on the short arm of rice chromosome 6 is reported. Using an F2:3 population segregated in the RM587-RM19784 region harboring qHUS6 in an isogenic background, two QTLs for hull silicon content were detected, of which qHUS61 was located in the upper region and qHUS62 in the lower region. Three plants carrying smaller heterozygous segments in the target region were selected, of which two covered the qHUS61 region and the other covered the qHUS62 region. Three F2:3 populations were derived from the selfed seeds of the three plants, respectively. QTL mapping was performed using the two populations segregated in the qHUS61 region, and qHUS61 was delimited to a 147.0 kb region flanked by RM510 and RM19417. Five groups of F3 lines with different genotypic composition in the qHUS62 region were selected from the other F2:3 population. Two QTLs were separated with twoway ANOVA, of which qHUS62a was located in the interval RM19706-RM19795 and qHUS62b in the interval RM314-RM19665. Reference | Related Articles | Metrics | Comments（0）

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A Toxicity Test of Transgenic Rice with mtlD/gutD Gene On Rats WANG Hui-zhong ,YING Qi-cai ,ZHONG Guo-qing ,TIAN Ju-xia ,CHEN He,HUANG Da-nian ,QIAN Qian ,ZHANG Hong-sheng Chinese Journal of Rice Science    Abstract （13952）      PDF （189KB）（3113）       Knowledge map    Save Toxicity experiments, mutation experiments and 30-day feeding tests were conducted on rats with transgenic rice bearing mtlD/gutD gene. Results showed that oral LD 50 for rats was larger than 30 g/kg and no mutations were found. The rats groups with 18,36,54 g/kg-dosage had good development in 30-day feeding test. No obvious differences were found in the index of weight, food utilization rate, routine blood test, rate of organ to body (weight to weight), and patho-histological observations between the rats fed with or without the transgenic rice grain. It could be concluded that transgenic rice with mtlD/gutD gene was safe to the rats. Related Articles | Metrics | Comments（0）

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Rice Cropping Regionalization in China Mei Fangquan,Wu Xianzhang,Yao Changxi,Li Luping,Wang Lei,Chen Qiuyun Chinese Journal of Rice Science    Abstract （13476）      PDF （1089KB）（5076）       Knowledge map    Save According to the ecological environments, social and economic backgrounds and rice cropping characteristics in different areas of China, the Chinese rice planting area is divided into 6 rice cropping regions(the first-grade regions) and 16 subregions (the second-grade regions). Their general information, natural and ecological environments, paddy field cropping systems, types of rice varieties and their distribution and major diseases and insect pests are respectively described. Orientations, approaches and measures for developing rice production are raised and meanwhile the suggestions are put forward on the layout of production, paddy field crops combination and selection and construction of commercial rice production bases. Related Articles | Metrics | Comments（0）

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Research on the Methods for Transforming BADH Gene into Rice LU De-zhao ,ZHU Shui-jin ,QIAN Qian ,WANG Hui-zhong ,YAN Mei-xian ,HUANG Da-nian Chinese Journal of Rice Science    Abstract （13422）      PDF （1142KB）（2689）       Knowledge map    Save The transformation effects of BADH gene (encoding betaine aldehyde dehydrogenase) into rice by particle bombarment and Agrobacterium tumefaciens mediated were compared in transgenic plant number, transformation efficiency, rate of PCR positive plantlets, foreign gene copies and their expression activity, and seed setting rate of T0 generation. Results showed that transformation efficiency and rate of PCR positive plantlets by Agrobacterium tumefaciens mediated were higher than those by particle bombardment method. Moreover, the performance in seed setting rate of T0 generation and some other agronomic traits of transgenic rice obtained from Agrobacterium tumefaciens mediated gene transfer system were better compared with particle bombarment methodology. Related Articles | Metrics | Comments（0）

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Embryological Studies on Apospory in Rice HDAR Yao Ailin,Cai Detian,Ma Pingfu,Zhu Hong Chinese Journal of Rice Science    Abstract （13337）      PDF （174KB）（3237）       Knowledge map    Save An embryological investigation on the development of female gametophyte formation and embryogenesis in rice HDAR was made. The results revealed that the aposporous embryo sacs originated from certain somatic cells in the vicinity of megasporocyte. As aposporous initials developed simultaneously with megaspore mother cell and competed with each other,either multiple embryo sacs or sometimes only single embryo sac could be observed at later stage in one ovule. Their multiple embryo sacs differed extensively to each other in shape, structure, and polarity. Also, egg-cell in certain embryo sacs, which were difficult to determine their origins, possessed the capacity for parthenogenesis. The coexistence between apomictic ovary and sexual suggested that apospory in observed materials might be a typical facultative apomixis. Related Articles | Metrics | Comments（0）

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Analysis of QTLs for Resistance to Rice Bacterial Blight YU Yan-chun ,TENG Sheng ,ZENG Da-li ,DONG Guo-jun ,QIAN Qian ,HUANG Da-nian ,ZHU Li-huang Chinese Journal of Rice Science    Abstract （12397）      PDF （145KB）（2868）       Knowledge map    Save A japonica/indica double haploid(DH) population, derived from Zhaiyeqing 8 and Jingxi 17, was used to analyze QTLs for resistance to rice bacterial blight (BBR). Both the parents and DH population did not carry any major gene and the parents were moderately susceptible to strain of Xanthomonas oryzae pv. oryzae(Xoo), Zhe 9612. Four QTLs (qBBR-3, qBBR-4, qBBR-5, and qBBR-6) were detected for BBR on chromosome 3, 4, 5 and 6, respectively. qBBR-3 and qBBR-4 showed additive effect, and qBBR-5 and qBBR-6 negative, the total effect of four QTLs was 38.6%. The variance analysis and significance test showed that the BBR effect of the rice lines with four QTLs was highly significant, and the resistance to Xoo strain could be attained by pyramiding minor genes. Related Articles | Metrics | Comments（0）

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Screening and Identification of Rice Cultivars with Relatively High Nitrogen Use Efficiency for Tolerance to Phosphorus Deficiency at Seedling Stage SONG Ai-mei,HUANG Xin-peng,SUN Shu-bin,ZHANG Ya-li,XU Guo-hua* Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2010.05.006 Abstract （12259）      PDF （1963KB）（3482）       Knowledge map    Save A hydroponic experiment was carried out to study the responses of 36 rice cultivars with relatively high nitrogen use efficiency to lowphosphorus at the seedling stage and to explore the differences in physiological mechanism between the lowphosphorus tolerant rice cultivars and the lowphosphorus sensitive ones. Great variation existed in the relative values of root dry weight, shoot dry weight, ratio of root to shoot dry weight and tiller number (coefficient of variation: 16.9%,10.9%,114%,16.3%) in different rice cultivars. In addition, correlation analysis showed their relativity was significant or highly significant. Therefore, these four indexes were employed to evaluate the tolerance to phosphorus deficiency comprehensively. Based on these indexes, three rice cultivars were preliminarily screened out as lowphosphorus tolerant and two rice cultivars as lowphosphorus sensitive, respectively. Comparing with the lowphosphorus sensitive cultivars, the lowphosphorus tolerant ones were characterized by more extensive root system coupled with its higher activity, lower Km and Cmin, but higher Vmax and APase activity. However, the lowphosphorus tolerant cultivars differed in physiological mechanism. The research proved the feasibility for screening double efficient rice cultivars of both nitrogen and phosphorus uses. The screened rice cultivars could be used for identifying genes involved in phosphorus efficiency. Reference | Related Articles | Metrics | Comments（0）

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InDel and SNP Markers and Their Application in Map-Based Cloning of Rice Genes PAN Cun-hong ,WANG Zi-bin ,MA Yu-yin ,YIN Yue-jun ,ZHANG Ya-fang ,ZUO Shi-min ,CHEN Zong-xiang ,PAN Xue-biao Chinese Journal of Rice Science    Abstract （12110）      PDF （1095KB）（6849）       Knowledge map    Save The high-density markers are necessary for map-based cloning of rice genes,but the available marker could not reach the satisfying level.InDel(insertion-deletion length polymorphism) and SNP(single nucleotide polymorphism) are new molecular markers,which could basically meet the need of the fine mapping.InDel and SNP markers could be developed through bioinformatics approaches.InDel and SNP markers are valuable markers with the characteristics of low cost,high specificity and stability.The methods for designing InDel and SNP markers were introduced and the example of mapping of the rice rolled leaf gene was used to describe the design procedures in practice.In addition,some key factors for improving the design efficiency were discussed. Related Articles | Metrics | Comments（0）

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Effect of Two Biotypes of Jiangdu Weedy Rice  at Various Transplanting Densities on  Growth of Cultivated Rice and Their Genetic  Relationship SUN Xingqiang1，2, ZHOU Yongjun1, LU Yongliang1, CHEN Lijuan2, YU Liuqing1,* Chinese Journal of Rice Science    2012, 26 (1): 118-122.   DOI: 10.3969/j.issn.10017216.2012.01.018 Abstract （12107）      PDF （499KB）（2377）       Knowledge map    Save To explore biotypes, genetic characteristics of weedy rice in Jiangdu, Jiangsu Province, China, and  their genetic  effect on yield of cultivated rice,  morphological characteristics were detected and cluster analysis was conducted based on SSR markers. The results showed that the weedy rice materials can be divided into two biotypes: One is dwarf, including JDWRA and JDWRC, the other one is tall, including JDWRB; the two biotypes of weedy rice belong to indica, JDWRA was most related to JDWRC, the dwarf type of weedy rice was distantly related to the tall type, and  closely  related to indica  male sterile line Zhenshan 97A. The competition test between weedy rice and cultivated rice indicated that the dwarf type of weedy rice more significantly influenced on yield factors of cultivated rice. Reference | Related Articles | Metrics | Comments（0）

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Monitoring of Resistance to Buprofezin in Brown Planthopper,Nilaparvata lugens(Homoptera: Delphacidae) LI Wen-hong ,GAO Cong-fen ,WANG Yan-hua ,ZHUANG Yong-lin ,DAI De-jiang ,SHEN Jin-liang Chinese Journal of Rice Science    Abstract （12027）      PDF （366KB）（3301）       Knowledge map    Save Rice stem-dipping method was used to monitor the susceptibility ofNilaparvata lugens(St°al) to buprofezin in 27 field populations,which were collected from eight provinces(region) in China from 1996 to 2007.The results showed that the populations from Jiangsu Province [Jiangpu(JPZY),Yizheng(YZZY) and Nantong(NTZY)],Anhui Province(Anqing,AQNS),and Guangxi [Nanning(GXNY) and Guilin(GLNS)] were very susceptible to buprofezin from 1996 to 2002,with resistance ratios of 0.3-to 3.5-fold.However,the populations of Jiangsu Province [Jiangpu(JPZY),2005] and Hainan Province [Lingshui(HNLS),2007] had developed a moderate level of resistance to buprofezin(28.8-and 19.4-fold,respectively);the populations from Guangxi [Nanning(GXNY) and Guilin(GLNS)],Hunan Province [Changde(CDTY)],Jiangxi Province [Xinjian(XJSM)],Zhejiang Province [Yuyao(YYLJ)],Anhui Province [Hexian(HXLY) and Qianshan(QSMC)],and Jiangsu Province [Nantong(NTZY)] showed a low level of resistance(5.6-to 9.1-fold) from 2005 to 2007;and the populations from Jiangxi Province [Shanggao(SGMS)],Zhejiang Province [Lanxi(LXYC)] and Hubei Province [Xiaogan(XGXC)] in 2006 were susceptible to buprofezin(2.5-to 4.1-fold).TheN.lugens collected from Anhui Province [Anqing(AQNS)] in 1996 had been selected with buprofezin for 13 generations in intermission during 22 generations,resulting in a LC50 decrease of 30%,and there was no significant difference in susceptibility between post-and pre-selections.However,after successive selection for 15 generations,the resistance ratio ascended to 1157.7-fold,which showed thatN.lugens had the risk of developing a high level of resistance to buprofezin if this insecticide was applied successively and alone.The strategy of resistance management of N.lugens was also proposed. Related Articles | Metrics | Comments（0）

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Development of STS Marker Linked to Rice Blast Resistance Gene Pi9 in Marker Assisted Selection Breeding YIN De-suo,XIA Ming-yuan,LI Jin-bo,WAN Bing-liang,ZHA Zhong-ping,DU Xue-shu,QI Hua-xiong* Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2011.01.004 Abstract （11990）      PDF （1065KB）（4104）       Knowledge map    Save Indica rice line 751127 carrying broadspectrum rice blast resistance gene Pi9 was used as resistance gene donor for genetic improvement of Yangdao 6 and R6547. By alignment of genomic sequences from the Pi9 locus of 751127, Yangdao 6 and Nipponbare, codominant STS (sequencetagged site) marker PB91, which linked to the Pi9 gene, was developed for molecular markerassisted selection (MAS). Eight backcross lines carrying Pi9 were obtained, among which four lines contained the genetic background of Yangdao 6 and the other four lines had the R6547 background. Under natural disease infection conditions in Enshi County and Yichang County of Hubei Province, China, the Pi9carrying lines showed higher blast disease resistance than Yangdao 6 and R6547 in various degrees. The hybrids originated from 08C893, an R6547derived rice line, showed higher blast disease resistance as compared to the control Yangliangyou 6. The results suggest PB91 is an effective codominant marker for MAS of Pi9 which is a valuable resistance gene for the control of rice blast disease in Hubei area. Reference | Related Articles | Metrics | Comments（0）

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Construction of Database for Chinese Rice Varieties and Their Genealogy E Zhiguo1, WANG Lei1,2,* Chinese Journal of Rice Science    2011, 25 (5): 565-566.   DOI: 10.3969/j.issn.10017216.2011.05.017 Abstract （11258）      PDF （372KB）（3282）       Knowledge map    Save The database for Chinese rice varieties and their genealogy(http://www.ricedata.cn/variety/) is an important subplatform of the Chinese National Rice Data Center (http://www.ricedata.cn/), which collects different kinds of Chinese rice varieties, including  approved in provinces or by national committee, utilized in  wider areas, introduced or local. Retrieval for rice variety and pedigree search were developed as two core components of the database. During the collection  of the varieties and their pedigrees, a typical problem is that some names of varieties were confused or mistaken easily. Reference | Related Articles | Metrics | Comments（0）

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Cloning and Identification of a Pathogenicity-Related Gene xopXoo in Rice Pathogen Xanthomonas oryzae pv.oryzae YANG Juan ,XU Yun-he ,ZOU Li-fang ,CHEN Gong-you Chinese Journal of Rice Science    Abstract （11173）      PDF （842KB）（3092）       Knowledge map    Save The xopX gene from Xanthomonas campestris pv.vesicatoria(Xcv) is involved in hypersensitive response induction in nonhost tabacco and enhances the susceptibility of host pepper.However,the function of the homolog with xopX revealed by the genome sequence of X.oryzae pv.oryzae(Xoo) strains MAFF311018 and KACC10311 is uncertain.To study the function of xopX homolog in Xoo,a xopXoo gene of Xoo was cloned and mutated.The xopXoo mutant induced hypersensitive response in tobacco and water soaking symptoms in rice seedlings,but its pathogenicity and reproductive capacity decreased greatly in rice leaves.Complementation of the xopXoo mutant with the xopXoo gene recovered the bacterial growth and the ability to cause the lesion length to the wild type,suggested that the xopXoo gene was related to the pathogenicity of Xoo in rice.Moreover,the products of putative genes possibly eliciting hypersensitive response in tobacco were postulated. Related Articles | Metrics | Comments（0）

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Some Related Traits in Conventional indica Rice Cultivars with High Nitrogen Use Efficiency for Grain Yield DONG Guichun,LI Jinqian,ZHANG biao,ZHOU Juan,ZHANG Chuansheng,ZHANG Yuefang,YANG Lianxin,HUANG Jianye,WANG Yulong* Chinese Journal of Rice Science    Abstract （11105）      PDF （3962KB）（3371）       Knowledge map    Save Eightyeight and one hundred and twentytwo conventional indica rice cultivars were solutioncultured in 2001 and 2002, respectively. Dry matter weight (including root system, culm and sheath, leaves and panicle), nitrogen content of different organs, yield and its components, growth duration, plant height, percentage of productive tillers and spikelet traits were investigated. The tested rice cultivars were classified into six types based on their levels of nitrogen use efficiency for grain output (NUEg) by the MinSSw method, to study their difference in growth duration, plant height, percentage of productive tillers and panicle traits. Cultivars with higher NUEg showed shorter growth duration especially days from sowing to heading, and NUEg was negatively correlated with days from sowing to heading. No significant relation between NUEg and plant height was found. The cultivars with higher NUEg had higher percentage of productive tillers which was closely correlated with translocation of dry matter and nitrogen. The spikelet density was higher while panicle length was shorter in cultivars with higher NUEg. Reference | Related Articles | Metrics | Comments（0）

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Current Situation and Suggestions  for Development of TwoLine Hybrid Rice in China SI Huamin, LIU Wenzhen, FU Yaping, SUN Zongxiu, HU Guocheng* Chinese Journal of Rice Science    2011, 25 (5): 544-552.   DOI: 10.3969/j.issn.10017216.2011.05.014 Abstract （11076）      PDF （891KB）（4912）       Knowledge map    Save Great progress  has made in  Twoline hybrid rice breeding in China. Up to 2010, a total of 427 twoline hybrid combinations were registered in China. Among them, 62 were nationally registered and   titled  as “super rice” by the Ministry of Agriculture, China. From 1993 to 2009, there were 121 combinations with the  planting area over 6 700 hm2, and the total planting area reached 20.974 million hm2. With the  planting area of   825×105 hm2 in 2002,  Liangyoupeijiu  ranked   first among all hybrid combinations  in planting area. In the following 7 years, twoline hybrid combination ranked first  for 6 years, and second for one year. In recent years, twoline hybrid rice  has become an important type in rice production in China, accounting for about 20% of the total planting area of hybrid rice. The current situation of the development of twoline hybrid rice was introduced, the main problems were discussed and the suggestions were proposed. Reference | Related Articles | Metrics | Comments（0）

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Pyramiding of Translucent Endosperm Mutant Gene Wx-mq and Rice Stripe Disease Resistance Gene Stv-bi by MarkerAssisted Selection in Rice (Oryza sativa) YAO Shu,CHEN Tao,ZHANG Ya-dong,ZHU Zhen,ZHAO Ling,ZHAO Qing-yong,ZHOU Li-hui,WANG Cai-lin Chinese Journal of Rice Science    DOI: 10.3969/j.issn.1001-7216.2010.04.002 Abstract （11015）      PDF （996KB）（3842）       Knowledge map    Save A high yielding japonica rice variety, Wuyunjing 7, bred in Jiangsu Province, China as female parent was crossed with the Japanese rice variety Kanto 194, which carries the rice stripe disease resistance gene Stvbi and translucent endosperm mutant gene Wxmq. From F2 generations, a SCAR (sequence characterized amplified region) marker tightly linked with Stvbi and a CAPS (cleaved amplified polymorphic sequence) marker for Wxmq were used for markerassisted selection. Finally, a new japonica rice line, Ning 9108, with excellent agronomic traits was bred by multigenerational selection on stripe disease resistance and endosperm appearance. The utilization of the markers from genes related to rice quality and disease resistance was helpful not only for establishing a molecular markerassisted selection system of highquality and disease resistance in rice, but also for providing important intermediate materials and rapid selection method for good quality, disease resistance and high yield in rice breeding. Reference | Related Articles | Metrics | Comments（0）