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56篇 您的检索式:作者名="ZENG DaLi"
    题名 作者 年代 出处 被引量
1LAZY1 controls rice shoot gravitropism through regulating polar auxin transport显示文摘米饭(Oryza sativa L.) 的分蘖角度是贡献粮谷生产的一个重要农学的特点,并且长为完成理想的植物建筑学改进谷物产量吸引了品种 ers 的注意。尽管庞大的努力在过去的十年被作了与极其传播或协议到 ers 为止学习异种,位于谷物庄稼的分蘖角度的控制下面的分子的机制仍然保持未知。这里,我们报导克隆调整米饭分蘖角度被控制的射击 gravitropism 的 LAZY1 (LA1 ) 基因。我们显示出那 LA1,新奇草特定的基因,是速度集合并且空间地表示,并且在极的植物生长素运输起一个否定作用(轻拍) 。LA1 的 Loss-of-function PATgreatly 提高并且因此在射击改变内长的 IAA 分发,导致 reducedgravitropism,并且因此,米饭的分蘖,枝散布显型种。Peijin Li Yonghong Wang Qian Qian Zhiming Fu Mei Wang Dali Zeng Baohua Li Xiujie Wang Jiayang Li 2007Cell Research2007,17,5:79
2A Rare Allele of GS2 Enhances Grain Size anc Grain Yield in Rice显示文摘谷物尺寸决定谷物重量并且影响谷物质量。调整谷物尺寸的几主要量的特点 loci (QTL ) 被克隆;然而,我们调整米饭谷物的尺寸的内在的机制的理解仍然保持碎片。这里,我们报导克隆和主导的 QTL 的描述,染色体 2 上的谷物尺寸(GS2 ) 编码调整生长的因素 4,一个 transcriptional 管理者。GS2 本地化到原子核并且可以充当抄写使活跃之物。影响 microRNA 的有约束力的地点的 GS2 的一个稀罕变化, OsmiR396c,原因提高了 GS2/OsGRF4 的表示。GS2 表示的增加导致更大的房间和房间的增加的数字,它因此提高谷物重量和产量。进米饭栽培变种的 GS2/OsGRF4 的这稀罕等位基因的介绍能显著地提高谷物重量和增加谷物产量,用在引起产量很高的米饭变化的可能的应用。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 2015Molecular Plant2015,8,10:57
3Natural Variation in the Promoter of GSE5 Contributes to Grain Size Diversity in Rice显示文摘自然基因变化的利用极大地在庄稼贡献重要农学的特点的改进。为谷物尺寸的自然变化理解基因基础能帮助 breeders 开发产量很高的米饭变化。在这研究,我们识别以前未被认出的基因,命名 GSE5,与功能的分析在由联合染色体宽的协会控制米饭谷物尺寸的 qSW5/GW5 地点学习。GSE5 编码血浆有 IQ 领域的联系膜的蛋白质,与米饭 calmodulin 蛋白质交往, OsCaM1-1。我们发现 GSE5 功能的损失引起了宽、重的谷物,当 GSE5 的 overexpression 导致了狭窄的谷物时。我们证明 GSE5 由在小穗状花小穗壳影响房间增长主要调整谷物尺寸。GSE5 的三主要 haplotypes (GSE5, GSE5 DEL1+IN1 , 和 GSE5 在栽培米饭的 DEL2 ) 在它的倡导者区域基于删除 / 插入类型被识别。我们表明了那在带 GSE5 在带 GSE5 haplotype 和 1212-bp 删除(DEL2 )> 与 GSE5 的减少的表示联系的 DEL2 haplotype,导致宽谷物。进一步的分析显示野米饭就职包含 GSE5 的所有三 haplotypes,建议在栽培米饭在场的 GSE5 haplotypes 是可能的从在米饭驯服期间的不同野米饭就职发源。一起拿,我们的结果显示在 qSW5/GW5 地点的以前未被认出的 GSE5 基因,被米饭 breeders 广泛地利用,控制谷物缩放,并且表明在 GSE5 的倡导者区域的那个自然变化在米饭贡献谷物尺寸差异。Penggen Duan Jinsong Xu Dali Zeng Baolan Zhang Mufan Geng Guozheng Zhang Ke Huang Luojiang Huang Ran Xu Song Ge Qian Qian Yunhai Li 2017Molecular Plant2017,10,5:31
4A Strigolactone Biosynthesis Gene Contributed to the Green Revolution in Rice显示文摘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.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 2020Molecular Plant2020,13,6:23
5QTL analysis of the rice seedling cold tolerance in a double haploid population derived from anther culture of a hybrid between indica and japonica rice显示文摘A doubled haploid population, derived from anther culture of F hybrid between a typical indica cv. and a japonica cv. has been used to investigate the seedling cold tolerance (SCT) in growth cabinet. By dynamically analyzing every day’s survival percentages of the parents and DH lines under 7-d cold plus 9-d normal temperature condition, the guantitative trait loci (QTLs) for SCT have been mapped based on a molecular linkage map constructed from this population. The results show that two parents had significant differences in SCT and the segregation of SCT in DH lines was basically a continuous distribution with most serious injury on the 6th d of the cold treatment. A total of 4 QTLs for SCT have been identified on chromosomes 1, 2, 3 and 4 respectively. The additive effects of qSCT-1, qSCT-2 and qSCT-3 have been contributed by the japonica ev JX17, but that of qSCT-4 has been contributed by the indica cv ZYQ8. The mechanism of SCT seems complicated since the above 4 QTLs detected at different stagesQIAN Qian ZENG Dali HE Ping ZHENG Xianwu CHEN Ying ZHU Lihuang 2000Chinese Science Bulletin2000,45,5:18
6QTL analysis of rice low temperature germinability显示文摘A double haploid population, derived from anther culture of F, hybrid between a typical indica and a japonica (ZYQ8/JX17), has been used to investigate the low temperature germinability (LTG) at 15℃. The low temperature germinability of two parents was significantly different. In 6-11 d, the germination percentage of ZYQ8 was higher than that of JX17. In 12-16 d, the germination percentage of JX17 was higher than that of ZYQ8. The quantitative trait loci (QTLs) of every day for low temperature germinabilityhave been mapped based on a molecular linkage map constructed from this population. In 8-11 d, qLTG-9 was identified in C397B-RZ617B on chromosome 9, the additive effect was positive, showing that, the allele from JX17 could increase low temperature germinability. In 12-16 d, qLTG-4 was mapped between RG908 and CT563 on chromosome 4, the additive effect was negative, showing that the allele from ZYQ8 could increase low temperature germinability. These two QTLs were detected at different stages,TENG Sheng ZENG Dali QIAN Qian Kunihifo Yasufumi HUANG Danian Zhu Lihuang 2001Chinese Science Bulletin2001,46,21:14
7The GW2-WG1-OsbZIP47 pathway controls grain size and weight in rice显示文摘Regulation of seed size is a key strategy for improving crop yield and is also a basic biological question.However,the molecular mechanisms by which plants determine their seed size remain elusive.Here,we report that the GW2-WG1-OsbZIP47 regulatory module controls grain width and weight in rice.WG1,which encodes a glutaredoxin protein,promotes grain growth by increasing cell proliferation.Interestingly,WG1 interacts with the transcription factor OsbZIP47 and represses its transcriptional activity by associating with the transcriptional co-repressor ASP1,indicating that WG1 may act as an adaptor protein to recruit the transcriptional co-repressor.In contrary,OsbZIP47 restricts grain growth by decreasing cell proliferation.Further studies reveal that the E3 ubiquitin ligase GW2 ubiquitinates WG1 and targets it for degradation.Genetic analyses confirm that GW2,WG1,and OsbZIP47 function in a comm on pathway to control grain growth.Taken together,ourfindi ngs reveal a genetic and molecular framework for the control of grain size and weight by the GW2-WG1-OsbZIP47 regulatory module,providing new targets for improving seed size and weight in crops.Jianqin Hao Dekai Wang Yingbao Wu Ke Huang Penggen Duan Na Li Ran Xu Dali Zeng Guojun Dong Baolan Zhang Limin Zhang Dirk Inze Qian Qian Yunhai Li 2021Molecular Plant2021,14,8:14
8Genetic Analysis and Fine Mapping of Two Genes for Grain Shape and Weight in Rice显示文摘To identify genetic loci controlling grain weight,an elite indica rice variety,Baodali,with large grains was identified and used in this study.Its derived F2,F3 and BC2F2 with another japonica rice variety Zhonghua 11 were used as mapping populations.Linkage analyses demonstrated that two genes controlling grain weight,designated as GW3 and GW6,were mapped to chromosome 3 and chromosome 6,respectively.Fine mapping delimited GW3 to a 122 kb physical distance between two sequence tagged site markers(WGW16 and WGW19) containing 16 open reading frames annotated by The Institute for Genomic Research(http://gffzzb05470f0357b4fe5hff569qfpopq06pxk.ffgz.tsg.suse.edu.cn).GW6 was further mapped between two simple sequence repeat markers(RM7179 and RM3187).These results are useful for both marker assisted selection of grain weight,and for further cloning of GW genes,which will contribute to the dissection of the molecular mechanism underlying grain weight in rice.Longbiao Guo Lilian Ma Hua Jiang Dali Zeng Jiang Hu Liwen Wu Zhenyu Gao Guangheng Zhang Qian Qian 2009Journal of Integrative Plant Biology2009,51,1:13
9ALK,the Key Gene for Gelatinization Temperature,is a Modifier Gene for Gel Consistency in Rice显示文摘Gelatinization temperature(GT) is an important parameter in evaluating the cooking and eating quality of rice.Indeed,the phenotype,biochemistry and inheritance of GT have been widely studied in recent times.Previous map-based cloning revealed that GT was controlled by ALK gene,which encodes a putative soluble starch synthase II-3.Complementation vector and RNAi vector were constructed and transformed into Nipponbare mediated by Agrobacterium.Phenotypic and molecular analyses of transgenic lines provided direct evidence for ALK as a key gene for GT.Meanwhile,amylose content,gel consistency and pasting properties were also affected in transgenic lines.Two of four nonsynonymous single nucleotide polymorphisms in coding sequence of ALK were identified as essential for GT.Based on the single nucleotide polymorphisms(SNPs),two new sets of SNP markers combined with one cleaved amplified polymorphic sequence marker were developed for application in rice quality breeding.Zhenyu Gao Dali Zeng Fangmin Cheng Zhixi Tian Longbiao Guo Yan Su Meixian Yan Hua Jiang Guojun Dong Yuchen Huang Bin Han Jiayang Li Qian Qian 2011Journal of Integrative Plant Biology2011,53,9:13
10Responses of root growth of Alhagi sparsifolia Shap. (Fabaceae) to different simulated groundwater depths in the southern fringe of the Taklimakan Desert, China显示文摘Alhagi sparsifolia Shap. (Fabaceae) is a spiny, perennial herb. The species grows in the salinized, arid regions in North China. This study investigated the response characteristics of the root growth and the distribution of one-year-old A. sparsifolia seedlings to different groundwater depths in controlled plots. The ecological adaptability of the root systems of A. sparsifolia seedlings was examined using the artificial digging method. Results showed that: (1) A. sparsifolia seedlings adapted to an increase in groundwater depth mainly through increasing the penetration depth and growth rate of vertical roots. The vertical roots grew rapidly when soil moisture content reached 3%-9%, but slowly when soil moisture content was 13%-20%. The vertical roots stopped growing when soil moisture content reached 30% (the critical soil moisture point). (2) The morphological plasticity of roots is an important strategy used by A. sparsifolia seedlings to obtain water and adapt to dry soil conditions. When the groundwater table was shallow, horizontal roots quickly expanded and tillering increased in order to compete for light resources, whereas when the groundwater table was deeper, vertical roots developed quickly to exploit space in the deeper soil layers. (3) The decrease in groundwater depth was probably responsible for the root distribution in the shallow soil layers. Root biomass and surface area both decreased with soil depth. One strategy of A. sparsifolia seedlings in dealing with the increase in groundwater depth is to increase root biomass in the deep soil layers. The relationship between the root growth/distribution of A. sparsifolia and the depth of groundwater table can be used as guidance for harvesting A. sparsifolia biomass and managing water resources for forage grasses. It is also of ecological significance as it reveals how desert plants adapt to arid environments.FanJiang ZENG Cong SONG HaiFeng GUO Bo LIU WeiCheng LUO DongWei GUI Stefan ARNDT DaLi GUO 2013Journal of Arid Land2013,5,2:13
11Isolation and genetic charac-terization of a fragile plant mutant in rice (Oryza sativa L.)显示文摘The fragile rice mutant was isolated from an M2 population of indica variety Shuang Ke Zao (SKZ) treated with γ-rays, and designated as fp1 {fragile plant 1) because of its fragile leaves and culms. To map FP1 locus, an F2 mapping population was derived from a cross between the fp1 and C-bao, a polymorphic japonic variety. The primary mapping result places the FP1 locus in an interval between two molecular markers, microsatellite marker RM16 (3.1 cM proximal to FP1) and STS marker G144a (9.1 cM distal to FP1) in the centromere region of chromosome 3. A CAPS marker C524a was further developed between RM16 and G144a, with 0.4 cM genetic distances to the FP1 locus, providing a practical starting point for constructing a BAC con-tig spanning the FP1 locus and cloning the fp1 gene. Allelism test demonstrated that fpl is allelic to be 1, a fragile rice mutant reported previously.QIAN Qian LI Yunhai ZENG Dali TENG Sheng WANG Zhengke LI Xueyong DONG Zhigang DAI Ning SUN Lei LI Jiayang 2001Chinese Science Bulletin2001,46,24:12
12Characterization and cloning of a brittle culm mutant (bc88) in rice (Oryza sativa L.)显示文摘This study characterizes a brittle culm (bc88) mutant of rice (Oryza sativa L.) obtained by ethylene methylsulfonate (EMS)-induced mutagenesis of Wuyunjing 7. The bc88 mutant exhibits a diversity of pleiotropic phenotypes, including brittle culm at the whole-plant growth stages, withered leaf tips at the seedling stage, and 18-d delay in heading date at the mature stage. Genetic analysis indicates that the bc88 mutant is controlled by a single recessive nuclear gene. The mutated bc88 gene isolated by map-based cloning contains only one point mutation in the 5th exon relative to its wild-type BC88 (LOC_Os09g25490 and Os09g0422500), leading to an amino acid change from P to L in bc88 plants. Alignment of the putative protein sequence with its homologs indicates that the mutation is located in the conserved region of the sequence. Detection of the transcription level of BC88 in rice plants shows that the expression level of BC88 is higher in spikes and culms than in leaves, roots, and leaf sheaths. These contribute to understanding of the molecular mechanism of cellulose synthesis. The target gene BC88 can be a useful tool in molecular marker-assisted selection for rice culm trait breeding.RAO YuChun YANG YaoLong XIN DeDong LI XiaoJing ZHAI KaiEn MA BoJun PAN JianWei QIAN Qian ZENG DaLi 2013Chinese Science Bulletin2013,58,24:11
13ABNORMAL FLOWER AND GRAIN 1 encodes OsMADS6 and determines palea identity and affects rice grain yield and quality显示文摘The palea and lemma are floral organ structures unique to grasses;these structures form the hull and directly affect grain size and quality. However, the molecular mechanisms controlling the development of the hull are not well understood. In this study, we characterized the rice(Oryza sativa) abnormal flower and grain1(afg1) mutant, a new allele of OsMADS6. Similar to previously characterized osmads6 alleles, in the afg1 floret, the palea lost its marginal region and acquired the lemma identity. However, in contrast to other osmads6 alleles, the afg1 mutant showed altered grain size and grain quality, with decreased total starch and amylose contents, and increased protein and soluble sugar contents. The analysis of transcriptional activity suggested that AFG1 is a transcriptional activator and may affect grain size by regulating the expression levels of several genes related to cell expansion and proliferation in the afg1 mutant. These results revealed that AFG1 plays an important role in determining palea identity and affecting grain yield and quality in rice.Xiaoqi Yu Saisai Xia Qiankun Xu Yuanjiang Cui Ming Gong Dali Zeng Qiang Zhang Lan Shen Guiai Jiao Zhenyu Gao Jiang Hu Guangheng Zhang Li Zhu Longbiao Guo Deyong Ren Qian Qian 2020Science China(Life Sciences)2020,63,2:10
14Xiaowei, a New Rice Germplasm for Large-Scale Indoor Research显示文摘Dear Editor,Rice (Oryza sativa)is a model monocot plant for biological studies due to its relatively small genome,rich germplasm resources,and high-efficiency transformation methods.Although significant progress has been made in rice genomics and functional genomics research (Li et al.,2018),large-scale indoor research toward better understanding of rice biology is hampered by its long growth period and extreme dependence on the natural environment for cultivation.There are some rice germplasms that have a short growth period and short plant height,such as Kitaake.Shikai Hu Xingming Hu Jiang Hu Lianguang Shang Guojun Dong Dali Zeng Longbiao Guo Qian Qian 2018Molecular Plant2018,11,11:10
15Xa7, a new executor R gene that confers durable and broad-spectrum resistance to bacterial blight disease in rice显示文摘Bacterial blight(BB)is a globally devastating rice disease caused by Xanthomonas oryzae pv.oryzae(Xoo).The use of disease resistance(R)genes in rice breeding is an effective and economical strategy for the control of this disease.Nevertheless,a majority of R genes lack durable resistance for long-term use under global warming conditions.Here,we report the isolation of a novel executor R gene,Xa7,that confers extremely durable,broad-spectrum,and heat-tolerant resistance to Xoo.The expression of Xa7 was induced by incompatible Xoo strains that secreted the transcription activator-like effector(TALE)AvrXa7 or PthXo3,which recognized effector binding elements(EBEs)in the Xa7 promoter.Furthermore,Xa7 induction was faster and stronger under high temperatures.Overexpression of Xa7 or co-transformation of Xa7 with avrXa7 triggered a hypersensitive response in plants.Constitutive expression of Xa7 activated a defense response in the absence of Xoo but inhibited the growth of transgenic rice plants.In addition,analysis of over 3000 rice varieties showed that the Xa7 locuswas found primarily in the indica and aus subgroups.A variation consisting of an 11-bp insertion and a base substitution(G to T)was found in EBEAvrXa7 in the tested varieties,resulting in a loss of Xa7 BB resistance.Through a decade of effort,we have identified an important BB resistance gene and characterized its distinctive interaction with Xoo strains;these findings will greatly facilitate research on the molecular mechanism of Xa7-mediated resistance and promote the use of this valuable gene in breeding.Xifeng Chen Pengcheng Liu Le Mei Xiaoling He Long Chen Hui Liu Shurong Shen Zhandong Ji Xixi Zheng Yuchen Zhang Zhenyu Gao Dali Zeng Qian Qian Bojun Ma 2021Plant Communications2021,2,3:9
16Characterization and fine mapping of an early senescence mutant (es-t) in Oryza sativa L.显示文摘An es-t (early senescence-temporary) mutant, produced by ethylene methylsulfonate treatment of strain Nipponbare, was identified in rice. The leaves of es-t appeared yellow at the seedling stage, and had decreased chlorophyll content. Rust spots were found during growth in es-t, especially at the leaf margin and tip. The plants showed a typical early-senescence phenotype at the milky stage. The leaf surface of es-t appeared smoother than wild-type leaves under a scanning electron microscope, because the leaves lack siliceous protuberances around the stoma. Chloroplasts grow abnormally and are filled with many starch grains in es-t. Paraffin section analysis showed that the development of the sclerenchyma cells and vascular bundles were also abnormal in es-t. Genetic analysis indicated that es-t was controlled by a recessive gene, which was finely mapped to a 42-kb interval on chromosome 5. These results will facilitate the positional cloning and functional studies of the gene.YANG YaoLong RAO YuChun LIU HuiJuan FANG YunXia DONG GuoJun HUANG LiChao LENG YuJia GUO LonBiao ZHANG GuangHeng HU Jiang GAO ZhenYu QIAN Qian ZENG DaLi 2011Chinese Science Bulletin2011,56,23:8
17Development of nutritious rice with high zinc/selenium and low cadmium in grains through QTL pyramiding显示文摘Enriching zinc(Zn) and selenium(Se) levels,while reducing cadmium(Cd) concentration in rice grains is of great benefit for human diet and health.Large natural variations in grain Zn, Se, and Cd concentrations in different rice accessions enable Zn/Sebiofortification and Cd-minimization through molecular breeding. Here, we report the development of new elite varieties by pyramiding major quantitative trait loci(QTLs) that significantly contribute to high Zn/Se and low Cd accumulation in grains. A chromosome segment substitution line CSSLGCC7 with the PA64s-derived GCC7 allele in the 93-11 background, exhibited steadily higher Mn and lower Cd concentrations in grains than those of 93-11. This elite chromosome segment substitution line(CSSL) was used as the core breeding material to cross with CSSLs harboring other major QTLs for essential mineral elements, especially CSSLGZC6 for grain Zn concentration and CSSLGSC5 for grain Se concentration. The CSSLGCC7+GZC6 and CSSLGCC7+GSC5 exhibited lower Cd concentration with higher Zn and Se concentrations in grains, respectively. Our study thus provides elite materials for rice breeding targeting high Zn/Se and low Cd concentrations in grains.Chaolei Liu Shilin Ding Anpeng Zhang Kai Hong Hongzhen Jiang Shenglong Yang Banpu Ruan Bin Zhang Guojun Dong Longbiao Guo Dali Zeng Qian Qian Zhenyu Gao 2020Journal of Integrative Plant Biology2020,62,3:7
18Quantitative Trait Loci for Panicle Layer Uniformity Identified in Doubled Haploid Lines of Rice in Two Environments显示文摘Uniformity of stem height in rice directly affects crop yield potential and appearance,and has become a vital index for rice improvement.In the present study,a doubled haploid(DH) population,derived from a cross between japonica rice Chunjiang 06 and indica rice TN1 was used to analyze the quantitative trait locus(QTL) for three related traits of paniclelayer-uniformity;that is,the tallest panicle height,the lowest panicle height and panicle layer disuniformity in two locations:Hangzhou(HZ) and Hainan(HN).A total of 16 QTLs for three traits distributed on eight chromosomes were detected in two different environments.Two QTLs,qTPH-4 and qTPH-8 were co-located with the QTLs for qLPH-4 and qLPH-8,which were only significant in the HZ environment,whereas the qTPH-6 and qLPH-6 located at the same interval were only significant in the HN environment.Two QTLs,qPLD-10-1 and qPLD-10-2,were closely linked to qTPH-10,and they might have been at the same locus.One QTL,qPLD-3,was detected in both environments,explaining more than 23% of the phenotypic variations.The CJ06 allele of qPLD-3 could increase the panicle layer disuniformity by 9.23 and 4.74 cm in the HZ and HN environments.Except for qPLD-3,almost all other QTLs for the same trait were detected only in one environment,indicating that these three traits were dramatically affected by environmental factors.The results may be useful for elucidation of the molecular mechanism of panicle-layer-uniformity and marker assisted breeding for super-rice.Liangyong Ma Jinsong Bao Longbiao Guo Dali Zeng Ximing Li Zhijuan Ji Yingwu Xia Changdeng Yang Qian Qian 2009Journal of Integrative Plant Biology2009,51,9:7
19Genetic analysis and fine-mapping of a dwarfing with withered leaf-tip mutant in rice显示文摘A dwarf mutant of rice(Oryza sativa L.) by mutagenesis of ethylene methylsulfonate(EMS) treatment from Nipponbare was identi-fied.The mutant exhibited phenotypes of dwarfism and withered leaf tip(dwl1).Based on the internode length of dwl1,this mutant be-longs to the dm type of dwarfing.Analysis of elongation of the second sheath and α-amylase activity in endosperm showed that the phe-notype caused by dwl1 was insensitive to gibberellin acid treatment.Using a large F2 population derived from a cross between the dwl1 and an indica rice variety,TN1,the DWL1 gene was mapped to the terminal region of the long arm of chromosome 3.Fine-mapping de-limited it into a 46 kb physical distance between two STS markers,HL921 and HL944,where 6 open reading frames were predicted.Cloning of DWL1 will contribute to dissecting molecular mechanism that regulates plant height in rice,which will be beneficial to mo-lecular assisted selection of this important trait.Liang Jiang Longbiao Guo Hua Jiang Dali Zeng Jiang Hu Liwen Wu Jian Liu Zhenyu Gao Qian Qian 2008Journal of Genetics and Genomics2008,35,12:7
20FRUCTOKINASE-LIKE PROTEIN 1 interacts with TRXz to regulate chloroplast development in rice显示文摘Chloroplast genes are transcribed by the plastidencoded RNA polymerase(PEP) or nucleus-encoded RNA polymerase. FRUCTOKINASE-LIKE PROTEINS(FLNs) are phosphofructokinase-B(Pfk B)-type carbohydrate kinases that act as part of the PEP complex; however, the molecular mechanisms underlying FLN activity in rice remain elusive.Previously, we identified and characterized a heat-stress sensitive albino(hsa_1) mutant in rice. Map-based cloning revealed that HSA_1 encodes a putative OsFLN_2. Here, we further demonstrated that knockdown or knockout of the OsFLN_1, a close homolog of HSA_1/OsFLN_2, considerably inhibits chloroplast biogenesis and the fln_1 knockout mutants, created by clustered regularly interspaced short palindromic repeats(CRISPR) and CRISPR-associate protein_9, exhibit severe albino phenotype and seedling lethality. Moreover, OsFLN_1 localizes to the chloroplast.Yeast two-hybrid, pull-down and bimolecular fluorescencecomplementation experiments revealed that OsFLN_1 and HSA_1/OsFLN_2 interact with THIOREDOXINZ(OsTRXz) to regulate chloroplast development. In agreement with this,knockout of OsTRXz resulted in a similar albino and seedling lethality phenotype to that of the fln_1 mutants. Quantitative reverse transcription polymerase chain reaction and immunoblot analysis revealed that the transcription and translation of PEP-dependent genes were strongly inhibited in fln_1 and trxz mutants, indicating that loss of OsFLN_1, HSA_1/OsFLN_2, or OsTRXz function perturbs the stability of the transcriptionally active chromosome complex and PEP activity. These results show that OsFLN_1 and HSA_1/OsFLN_2 contribute to chloroplast biogenesis and plant growth.Lei He Sen Zhang Zhennan Qiu Juan Zhao Wendan Nie Haiyan Lin Zhengge Zhu Dali Zeng Qian Qian Li Zhu 2018Journal of Integrative Plant Biology2018,60,2:6
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