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| 1 | Validation and Characterization of Ghd7.1, a Major Quantitative Trait Locus with Pleiotropic Effects on Spikelets per Panicle, Plant Height, and Heading Date in Rice (Oryza sativa L.)显示文摘A quantitative trait locus(QTL)that affects heading date(HD)and the number of spikelets per panicle(SPP)was previously identifed in a small region on chromosome 7 in rice(Oryza sativa L.).In order to further characterize the QTL region,near isogenic lines(NILs)were quickly obtained by self‐crossing recombinant inbred line 189,which is heterozygous in the vicinity of the target region.The pleiotropic effects of QTL Ghd7.1 on plant height(PH),SPP,and HD,were validated using an NIL‐F2 population.Ghd7.1 explained 50.2%,45.3%,and 76.9% of phenotypic variation in PH,SPP,and HD,respectively.Ghd7.1 was precisely mapped to a 357‐kb region on the basis of analysis of the progeny of the NIL‐F2 population.Day‐length treatment confrmed that Ghd7.1 is sensitive to photoperiod,with long days delaying heading up to 12.5 d.Identifcation of panicle initiation and development for the pair of NILs showed that Ghd7.1 elongated the photoperiod‐sensitive phase more than 10 d,but did not change the basic vegetative phase and the reproductive growth phase.These fndings indicated that Ghd7.1 regulates SPP by controlling the rate of panicle differentiation rather than the duration of panicle development. | Touming Liu Haiyang Liu Huang Zhang Yongzhong Xing | 2013 | Journal of Integrative Plant Biology2013，55，10： | 22 |
| 2 | The Auxin-Regulated Protein ZmAuxRPI Coordinates the Balance between Root Growth and Stalk Rot Disease Resistance in Maize显示文摘To optimize fitness, plants must efficiently allocate their resources between growth and defense. Although phytohormone crosstalk has emerged as a major player in balancing growth and defense, the genetic basis by which plants man age this balance remai ns elusive. We previously ide ntified a quantitative disease . resistance locus, qRfg2, in maize (Zea mays) that protects against the fungal disease Gibberella stalk rot. Here, through map-based cloning, we demonstrate that the causal gene at qRfg2 is ZmAuxRPI, which encodes a plastid stroma-localized auxin-regulated protein. ZmAuxRPI responded quickly to pathogen challenge with a rapid yet transient reduction in expression that led to arrested root growth but enhanced resista nee to Gibberella stalk rot and Fusarium ear rot. ZmAuxRPI was show n to promote the biosynthesis of indole-3-acetic acid (IAA), while suppressing the formation of benzoxazinoid defense compounds. ZmAuxRPI presumably acts as a resource regulator modulating indole-3-glycerol phosphate and/or indole flux at the branch point between the IAA and benzoxazinoid biosynthetic pathways. The concerted interplay between IAA and benzoxazinoids can regulate the growth-defense balance in a timely and efficient manner to optimize plant fitness. | Jianrong Ye Tao Zhong Dongfeng Zhang Chuanyu Ma Lina Wang Lishan Yao Qianqian Zhang Mang Zhu Mingliang Xu | 2019 | Molecular Plant2019，12，3： | 19 |
| 3 | 玉米抗茎腐病研究进展显示文摘玉米茎腐病是一种全球性病害,严重影响玉米的产量和品质。本文概括玉米茎腐病的分布与危害、致病菌的类别与致病机理、抗病种质资源的分布与鉴定,介绍玉米抗茎腐病的遗传、抗病基因和抗病分子机理等方面的研究进展,对数量抗性位点研究与应用做了展望。 | 马传禹 姚丽姗 杜腓利 徐明良 | 2018 | 玉米科学2018，26，2： | 15 |
| 4 | Quantitative Disease Resistance: Dissection and Adoption in Maize显示文摘 | Qin Yang Peter Balint-Kurti Mingliang Xu | 2017 | Molecular Plant2017，10，3： | 8 |
| 5 | Use of genotype-environment interactions to elucidate the pattern of maize root plasticity to nitrogen deficiency显示文摘Maize(Zea mays L.) root morphology exhibits a high degree of phenotypic plasticity to nitrogen(N) de ficiency,but the underlying genetic architecture remains to be investigated Using an advanced BC_4F_3 population,we investigated the root growth plasticity under two contrasted N levels and identi fied the quantitative trait loci(QTLs) with QTL-environment(Q×E)interaction effects. Principal components analysis(PCA) on changes of root traits to N de ficiency(D LN-HN) showed that root length and biomass contributed for 45.8% in the same magnitude and direction on the first PC,while root traits scattered highly on PC_2 and PC_3. Hierarchical cluster analysis on traits for D LN-HN further assigned the BC_4F_3 lines into six groups,in which the special phenotypic responses to N de ficiency was presented These results revealed the complicated root plasticity of maize in response to N de ficiency that can be caused by genotype environment(G×E) interactions. Furthermore,QTL mapping using a multi-environment analysis identi fied 35 QTLs for root traits. Nine of these QTLs exhibited signi ficant Q×E interaction effects. Taken together,our findings contribute to understanding the phenotypic and genotypic pattern of root plasticity to N de ficiency,which will be useful for developing maize tolerance cultivars to N de ficiency. | Pengcheng Li Zhongjuan Zhuang Hongguang Cai Shuai Cheng Ayaz Ali Soomro Zhigang Liu Riliang Gu Guohua Mi Lixing Yuan Fanjun Chen | 2016 | Journal of Integrative Plant Biology2016，58，3： | 8 |
| 6 | A Teosinte-derived Allele of a MYB Transcription Repressor Confers Multiple Disease Resistance in Maize.显示文摘Natural alleles controlling multiple disease resistances (MDR) are valuable for crop breeding. However, only one MDR gene have been cloned in maize, and molecular mechanisms of MDR are not clear. By map-based cloning, we have cloned a teosinte-derived allele of a resistance gene, Mexicana lesion mimic 1 (ZmMM1), which has a lesion mimic phenotype and confers resistance to northern leaf blight (NLB), gray leaf spot (GLS) and southern corn rust (SCR). Strong MDR conferred by the teosinte allele is linked with the polymorphisms in the 3' untranslated region of the ZmMM1 gene that cause increased accumulation of ZmMM1 protein. ZmMM1 acts as a transcription repressor and negatively regulates transcription of specific target genes including ZmMM1-target gene 3 (ZmMT3), which functions as a negative regulator of plant immunity and associated cell death. The successful isolation of the ZmMM1 resistance gene will help not only in developing broad-spectrum and durable disease resistance but also in understanding the molecular mechanisms underlying MDR. | Hongze Wang Jiabao Hou Pei Ye Long Hu Junshi Huang Zhikang Dai Bao Zhang Sha Dai Jiamin Que Haoxuan Min Gengshen Chen Yanbo Wang Min Jiang Yan Liang Lin Li Xuecai Zhang Zhibing Lai | 2021 | Molecular Plant2021，14，11： | 4 |
| 7 | 基于高密度遗传图谱的玉米抗倒伏相关性状QTL分析显示文摘倒伏是影响玉米高产稳产的重要因素,解析玉米抗倒性遗传机制对选育抗倒玉米新品种具有重要意义。本研究以T877×DH1M重组自交系为试验材料,对7个抗倒伏相关的性状进行表型调查和分析,结合高密度遗传图谱进行QTL定位。主要结果如下:T877和DH1M在茎长、茎秆硬皮穿刺强度、茎秆抗拉弯强度、茎压碎强度、穗位高等性状上存在显著差异,这些性状在RIL群体中存在广泛的遗传变异。本文研究的7个性状均表现出连续变异的特点,基本符合正态分布,属于典型的数量性状。相关分析表明茎杆强度相关性状(茎秆硬皮穿刺强度,茎秆抗拉弯强度和茎秆垂直压碎强度)相互间存在明显的正相关(r=0.430~0.772),并且与茎粗存在显著正相关(r=0.254~0.649)。对株高、穗位高、第三节茎长、茎粗、茎秆硬皮穿刺强度、茎秆抗拉弯强度和茎秆垂直压碎强度7个性状进行QTL定位,共计定位到22个QTL,每个性状能检测到1~6个QTL,单个QTL仅能解释5.04%~10.36%,表明这些性状主要受到多个微效位点的控制。研究结果将为玉米抗倒伏分子育种提供理论依据。 | 李鹏程 魏杰 陈敏珺 尹双义 杨天天 柳俊 潘婷 范莹莹 刘嘉欣 倪进然 徐辰武 杨泽峰 | 2019 | 分子植物育种2019，17，6： | 3 |
| 8 | 玉米耐深播主效QTL qMES20-10的精细定位及差异表达基因分析显示文摘干旱是影响玉米(Zea mays L.)产量最主要的环境因素之一,具有耐深播特性的玉米种质材料能够吸收土壤深层水分,具有较强的耐旱性,因此研究玉米耐深播性状的遗传机制具有重要的理论和应用价值。本实验室前期已利用耐深播玉米自交系3681-4与普通自交系X178构建的F2:3群体,在玉米10号染色体上定位到了一个耐深播主效QTLqMES20-10。本研究在此基础上,以X178为轮回亲本,结合前景选择和背景选择,构建了BC3F3:4家系,对qMES20-10迚行了确证;并进一步利用分子标记辅助选择构建了高代回交群体,将其精细定位于133.3~136.0Mb的区间之内。同时,利用从BC3F3:4家系中筛选出的两个近等基因系,迚行差异表达基因分析,发现差异表达基因主要参与了化学性应激反应、氧化还原反应和对氧化胁迫的应激反应。本研究结果为迚一步兊隆耐深播主效QTL qMES20-10奠定了基础。 | 任蒙蒙 张红伟 王建华 王国英 郑军 | 2020 | 作物学报2020，46，7： | 2 |
| 9 | 玉米尾孢灰斑病抗性QTL分析显示文摘选用玉米尾孢灰斑病抗病自交系R225与感病的自交系掖478组配F2群体共345个单株,选用多态性好的127个SSR标记构建了分子遗传连锁图谱,覆盖整个玉米基因组1738cM,平均图距为13.6cM。2013、2014连续两年采用田间自然诱发进行多年多点表型鉴定,利用QTL IciMapping分子标记作图软件分析2个环境的表型数据QTL,有5个QTL在2个环境都能检测到,分别位于2号、5号、8号和9号染色体上,单个QTL表型遗传变异介于4.78%~37.77%之间,除9号染色体抗病QTL来源于感病亲本掖478外,其余QTL均来自抗病亲本R225,其中以2号染色体效应最高。研究结果为玉米尾孢菌灰斑病抗性基因发掘提供了科学依据。 | 李菁 张小飞 谭清峰 杨雨欣 | 2020 | 陕西农业科学2020，66，9： | 0 |
| 10 | Dissecting the genetic basis of maize deep-sowing tolerance by combining association mapping and gene expression analysis显示文摘Deep-sowing is an important method for avoiding drought stress in crop species,including maize.Identifying candidate genes is the groundwork for investigating the molecular mechanism underlying maize deep-sowing tolerance.This study evaluated four traits(mesocotyl length at 10 and 20 cm planting depths and seedling emergence rate on days 6 and 12)related to deep-sowing tolerance using a large maize population containing 386 inbred lines genotyped with 0.5 million high-quality single nucleotide polymorphisms(SNPs).The genomewide association study detected that 273 SNPs were in linkage disequilibrium(LD)with the genetic basis of maize deep-sowing tolerance.The RNA-sequencing analysis identified 1944 and 2098 differentially expressed genes(DEGs)in two comparisons,which shared 281 DEGs.By comparing the genomic locations of the 273 SNPs with those of the 281 DEGs,we identified seven candidate genes,of which GRMZM2G119769 encoded a sucrose non-fermenting 1 kinase interactor-like protein.GRMZM2G119769 was selected as the candidate gene because its homologs in other plants were related to organ length,auxin,or light response.Candidate gene association mapping revealed that natural variations in GRMZM2G119769 were related to phenotypic variations in maize mesocotyl length.Gene expression of GRMZM2G119769 was higher in deep-sowing tolerant inbred lines.These results suggest that GRMZM2G119769 is the most likely candidate gene.This study provides information on the deep-sowing tolerance of maize germplasms and identifies candidate genes,which would be useful for further research on maize deep-sowing tolerance. | YANG Yue MA Yu-ting LIU Yang-yang Demar LYLE LI Dong-dong WANG Ping-xi XU Jia-liang ZHEN Si-han LU Jia-wen PENG Yun-ling CUI Yu FU Jun-jie DU Wan-li ZHANG Hong-wei WANG Jian-hua | 2022 | Journal of Integrative Agriculture2022，21，5： | 0 |
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