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Hatching and development of maize cyst nematode Heterodera zeae infecting different plant hosts

Journal of Integrative Agriculture 2024年第5期23卷 1593-1603页

作者： Jiangkuan Cui Haohao Ren BoWang Fujie Chang Xuehai Zhang Haoguang Meng Shijun Jiang jihua tang College of Plant Protection National Key Laboratory of Wheat and Maize Crop ScienceHenan Agricultural UniversityZhengzhou 450002China

The occurrence, distribution, and rapid molecular detection technology of Heterodera zeae Koshy et al. 1971, have been reported in China. We explored the biological characteristics of H. zeae sampled in Henan Province, China to understand its interaction with plants. Cysts and second-stage juveniles(J2s) were identified under an optical and scanning electron microscope, internal transcribed spacer(ITS) phylogenetic tree, and sequence characterized amplified region(SCAR)-PCR analyses. The optimum hatching temperatures of H. zeae were 30°C and 28°C, with cumulative hatching rates of 16.5 and 16.1%, respectively, at 30 days post-hatching(dph). The hatching rate of H. zeae eggs was improved by 20-and 50-time maize soil leachate and root juice, and 10-time root exudates. The hatching rate in 10-time root exudates was the highest(25.9%). The 10-time root exudates of maize and millet produced the highest hatching rate at 30 dph(25.9 and 22.9%, respectively), followed by wheat(19.9%), barley(18.3%), and rice(17.6%). Heterodera zeae developed faster in maize than in other crops. Fourth-stage juveniles(J4s) were detected in maize roots 8 days post-inoculation(dpi) at 28°C but not in other crops. Combined with hatching tests, the Huang–Huai–Hai summer maize region and the south and central-southwest mountainous maize areas are highly suitable for H. zeae in China. This is the first systematically study of the hatching and infection characteristics on different plant hosts of corn cyst nematode H. zeae in temperate regions. This study laid a theoretical foundation for the rapid spread and high environmental adaptability of corn cyst nematode.

关键词： crop host resistance Heterodera zeae incubation fluid maize cyst nematode nematode development nematodehatching

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ZmCYP90D1 regulates maize internode development by modulating brassinosteroid-mediated cell division and growth

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The Crop Journal 2024年第1期12卷 58-67页

作者： Canran Sun Yang Liu Guofang Li Yanle Chen Mengyuan Li Ruihua Yang Yongtian Qin Yongqiang Chen Jinpeng Cheng jihua tang Zhiyuan Fu Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy Henan Agricultural UniversityZhengzhou 450046HenanChina The Shennong Laboratory Zhengzhou 450002HenanChina Hebi Academy of Agricultural Sciences Hebi 458030HenanChina Yunnan tang jihua Expert Workstation/Zhaotong Academy of Agricultural Sciences Zhaotong 657000YunnanChina

Plant height(PH)is associated with lodging resistance and planting density,which is regulated by a complicated gene *** this study,we identified a spontaneous dwarfing mutation in maize,m30,with decreased internode number and length but increased internode diameter.A candidate gene,ZmCYP90D1,which encodes a member of the cytochrome P450 family,was isolated by map-based ***90D1 was constitutively expressed and showed highest expression in basal internodes,and its protein was targeted to the nucleus.A G-to-A substitution was identified to be the causal mutation,which resulted in a truncated protein in *** of function of ZmCYP90D1 changed expression of hormoneresponsive genes,in particular brassinosteroid(BR)-responsive genes which is mainly involved in cell cycle regulation and cell wall extension and modification in *** concentration of typhasterol(TY),a downstream intermediate of ZmCYP90D1 in the BR pathway,was reduced.A haplotype conferring dwarfing without reducing yield was ***90D1 was inferred to influence plant height and stalk diameter via hormone-mediated cell division and cell growth via the BR pathway.

关键词： Maize ZmCYP90D1 BR biosynthesis Dwarf plant

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Comparative QTL analysis of maize seed artificial aging between an immortalized F_2 population and its corresponding RILs

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The Crop Journal 2016年第1期4卷 30-39页

作者： Bin Wang Zhanhui Zhang Zhiyuan Fu Zonghua Liu Yanmin Hu jihua tang State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops Henan Agricultural University College of Agronomy Henan University of Science and Technology

Seed aging decreases the quality and vigor of crop seeds,thereby causing substantial agricultural and economic losses in *** identify genetic differences in seed aging between homozygotes and heterozygotes in maize,the seeds of a set of recombinant inbred lines(RILs) and an immortalized F_2(IF_2) population were subjected to artificial aging treatments for 0,2,3,and 4 days under 45℃ and 85%relative humidity and seed vigor was then evaluated in a field *** vigor of all entries tested decreased sharply with longer aging treatment and seed vigor decreased more slowly in heterozygotes than in ***-nine QTL were detected for four measured seed vigor traits in the RIL(28QTL) and IF_2(21 QTL) *** one QTL,qGP5,was detected in both populations,indicating that the genes involved in anti-aging mechanisms differed between inbred lines and *** QTL were identified to be responsible for multiple seed vigor traits simultaneously in the RIL and IF_2 populations under artificial aging *** QTL may include major genes for seed vigor or seed *** qVI4 b and qGE3 a detected in the RIL population coincided with genes ZmLOX1 and ZmPLD1 in the same respective chromosomal *** QTL would be useful for screening for anti-aging genes in maize breeding.

关键词： Maize(Zea mays L.) Seed vigor Artificial aging QTL mapping Seed storage

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Identification and isolation of Mu-flanking fragments from maize

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Journal of Genetics and Genomics 2008年第4期35卷 207-213页

作者： Yijun Wang Guangming Yin Qin Yang jihua tang Xiaomin Lu Schuyler S. Korban Mmghang Xu Agricultural College Yangzhou University Yangzhou 225009 China National Maize Improvement Center of China China Agricultural University Beijing 100094 China Corn Research Institute Henan Agricultural University Zhengzhou 450002 China Department of Natural Resources and Environmental Sciences University of Illinois Urbana 1L61801 USA

Transposable elements have been utilized as mutagens to create mutant libraries for functional genomics. Isolation of genomic segments flanking the insertion Mutator （Mu） is a key step in insertion mutagenesis studies. Herein, we adopted a modified AFLP method to identify and isolate Mu-flanking fragments from maize. The method consists of the following steps： 1） double-digestion of genomic DNA with Bgl II/Msp I and ligation of digested fragments to the Bgl II- and Msp I-adaptors; 2） enrichment of a subset of Bgl II/Msp I fragments followed by selective amplification of the Mu-flanking fragments; 3） simultaneous display of AFLP bands derived from the flanking regions for both insert and native Mu transposons; 4） identification and isolation of AFLP bands resulting from Mu insertions by comparing the banding profiles between Mu-induced mutants and their parental lines; and 5） confirmation of flanking fragments related to these Mu insertions. Using this approach, we have isolated flanking fragment（s） resulting from Mu insertion for every Mu-induced mutant, and one such fragment, M196-FF, is found to contain a partial sequence of the DNA topoisomerase I gene Topl. Moreover, the modified AFLP method including all restriction enzymes, adaptors and primers has been optimized in this study. The modified AFLP method has been proved to be simple and efficient in the isolation of Mu-flanking fragments and will find its usefulness in the functional genomics of maize.

关键词： Mutator transposon flanking fragment AFLP maize

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Detection of quantitative trait loci and heterotic loci for plant height using an immortalized F_2 population in maize

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Chinese Science Bulletin 2007年第4期52卷 477-483页

作者： tang jihua MA XiQing TENG WenTao YAN JianBing WU WeiRen DAI JingRui LI JianSheng National Maize Improvement Center of China China Agricultural University Beijing 100094 China College of Agronomy Henan Agricultural University Zhengzhou 450002 China Institute of Bioinformatics Zhejiang University Hangzhou 310029 China

A set of recombinant inbred lines (RIL) derived from Yuyu22, an elite hybrid widespread in China, was used to construct an immortalized F2 (IF2) population comprising 441 different crosses. Genetic linkage maps were constructed containing 10 linkages groups with 263 simple sequence repeat (SSR) molecular markers. Twelve and ten quantitative trait loci (QTL) were detected for plant height in the IF2 and RIL populations respectively, using the composite interval mapping method, and six same QTL were identified in the two populations. In addition, ten unique heterotic loci (HL) located on seven different chromosomes were revealed for plant height using the mid-parent heterosis as the input data. These HL explained 1.26%―8.41% of the genotypic variance in plant height heterosis and most expressed overdominant effects. Only three QTL and HL were located in the same chromosomal region, it implied that plant height and its heterosis might be controlled by two types of genetic mechanisms.

关键词：玉米纯系植株高度 QTL分析数量性状杂种优势位点 F2代群体分子标记

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The chimeric gene atp6c confers cytoplasmic male sterility in maize by impairing the assembly of the mitochondrial ATP synthase complex

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Molecular Plant 2022年第5期15卷 872-886页

作者： Huili Yang Yadong Xue Bing Li Yanan Lin Haochuan Li Zhanyong Guo Weihua Li Zhiyuan Fu Dong Ding jihua tang National Key Laboratory of Wheat and Maize Crop Science College of AgronomyHenan Agricultural UniversityZhengzhouChina The Shennong Laboratory ZhengzhouChina

Cytoplasmic male sterility(CMS)is a powerful tool for the exploitation of hybrid heterosis and the study of signaling and interactions between the nucleus and the cytoplasm.C-type CMS(CMS-C)in maize has long been used in hybrid seed production,but the underlying sterility factor and its mechanism of action remain *** this study,we demonstrate that the mitochondrial gene atp6c confers male sterility in CMS-C *** ATP6C protein shows stronger interactions with ATP8 and ATP9 than ATP6 during the assembly of F1F0-ATP synthase(F-type ATP synthase,ATPase),thereby reducing the quantity and activity of assem-bled F_(1)F_(o)-ATP *** contrast,the quantity and activity of the F1'component are increased in CMS-C *** F1F0-ATP synthase activity causes accumulation of excess protons in the inner membrane space of the mitochondria,triggering a burst of reactive oxygen species(ROS),premature programmed cell death of the tapetai cells,and pollen ***,our study identifies a chimeric mitochondrial gene(ATP6C)that causes CMS in maize and documents the contribution of ATP6C to F1F0-ATP synthase assembly,thereby providing novel insights into the molecular mechanisms of male sterility in plants.

关键词： maize cytoplasmic male sterility atp6c ATP synthase mitochondria

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Systematic dissection of disease resistance to southern corn rust by bulked-segregant and transcriptome analysis

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The Crop Journal 2022年第2期10卷 426-435页

作者： Xiaohuan Mu Zhuangzhuang Dai Zhanyong Guo Hui Zhang Jianping Yang Xinke Gan Jiankun Li Zonghua Liu jihua tang Mingyue Gou State Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002HenanChina

Southern corn rust(SCR) is a destructive maize disease caused by Puccinia polysora Underw. To investigate the mechanism of SCR resistance in maize, a highly resistant inbred line, L119 A, and a highly susceptible line, Lx9801, were subjected to gene mapping and transcriptome analysis. Bulked-segregant analysis coupled with whole-genome sequencing revealed several quantitative trait loci(QTL) on chromosomes 1, 6, 8, and 10. A set of 25 genes, including two coiled-coil nucleotide-binding site leucine-rich repeat(CC-NBS-LRR) genes, were identified as candidate genes for a major-effect QTL on chromosome 10. To investigate the mechanism of SCR resistance in L119 A, RNA-seq of P. polysorainoculated and non-inoculated plants of L119 A and Lx9801 was performed. Unexpectedly, the number of differentially expressed genes in inoculated versus non-inoculated L119 A plants was about 10 times that of Lx9801, with only 29 common genes identified in both lines, suggesting extensive gene expression changes in the highly resistant but not in the susceptible line. Based on the transcriptome analysis, one of the CC-NBS-LRR candidate genes was confirmed to be upregulated in L119 A relative to Lx9801 independently of P. polysora inoculation. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses indicated that transcription factors, as well as genes involved in defense responses and metabolic processes, were dominantly enriched, with the phenylpropanoid biosynthesis pathway most specifically activated. Consistently, accumulation of phenylpropanoid-derived lignin, especially S lignin, was drastically increased in L119 A after P. polysora inoculation, but remained unchanged in Lx9801, suggesting a critical role of lignin in SCR resistance. A regulatory network of defense activation and metabolic change in SCR-resistant maize upon P. polysora infection is described.

关键词： Maize Southern corn rust BSA-seq RNA-seq Lignin

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The Application of UAV-Based Hyperspectral Imaging to Estimate Crop Traits in Maize Inbred Lines

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Plant Phenomics 2021年第1期3卷 351-364页

作者： Meiyan Shu Mengyuan Shen Jinyu Zuo Pengfei Yin Min Wang Ziwen Xie jihua tang Ruili Wang Baoguo Li Xiaohong Yang Yuntao Ma College of Land Science and Technology China Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Physiology and Biochemistry National Maize Improvement Center of ChinaChina Agricultural UniversityBeijing 100193China College of Agronomy Henan Agricultural UniversityZhengzhou 450002China Agricultural Artificial Intelligence and Crop Phenotype Engineering Research Center Inner Mongolia Institute of BiotechnologyHuhhot 010070China

Crop traits such as aboveground biomass(AGB),total leaf area(TLA),leaf chlorophyll content(LCC),and thousand kernel weight(TWK)are important indices in maize *** to extract multiple crop traits at the same time is helpful to improve the efficiency of *** with digital and multispectral images,the advantages of high spatial and spectral resolution of hyperspectral images derived from unmanned aerial vehicle(UAV)are expected to accurately estimate the similar traits among breeding *** study is aimed at exploring the feasibility of estimating AGB,TLA,SPAD value,and TWK using UAV hyperspectral images and at determining the optimal models for facilitating the process of selecting advanced *** successive projection algorithm(SPA)and competitive adaptive reweighted sampling(CARS)were used to screen sensitive bands for the maize *** least squares(PLS)and random forest(RF)algorithms were used to estimate the maize *** results can be summarized as follows:The sensitive bands for various traits were mainly concentrated in the near-red and red-edge *** sensitive bands screened by CARS were more abundant than those screened by *** AGB,TLA,and SPAD value,the optimal combination was the CARS-PLS *** the TWK,the optimal combination was the CARS-RF *** with the model built by RF,the model built by PLS was more *** study provides guiding significance and practical value for main trait estimation of maize inbred lines by UAV hyperspectral images at the plot level.

关键词： Crop breeding forest

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ALCATEL VIDEO-ON-DEMAND NETWORK SERVICE DEMONSTRATION FOR TELECOM GENEVA’95

ALCATEL VIDEO-ON-DEMAND NETWORK SERVICE DEMONSTRATION FOR TE...

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1996 International Conference on Information Infrastructure(ICII’96)

作者： tang jihua Shanghai Bell Belgium Technical Centre Amerikalei 33Antwerpen 2000Belgium

＜正＞A world wide information superhighway maybe one of the ways for future *** Transfer Mode（ATM）based Full Service Network（FSN） will be the solution to global multimedia *** paper describes the general FSN architecture and its services,shows the implementation and services of Alcatel Video-On -Demand（VOD）demonstration system for Telecom Geneva’95. The Alcatel VOD system mainly consists of A1000 ATM broadband switch,video storage server,service gateway,access network,FDDI Local Area Network,ADSL,Set-Top-Boxes, TV sets and computer *** provides the services of Interactive VOD program（IVOD）multimedia services,video conferencing,INTERNET access etc.

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A peptide chain release factor 2a gene regulates maize kernel development by modulating mitochondrial function

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The Crop Journal 2023年第6期11卷 1731-1741页

作者： Hui Zhang Yijian Feng Kunyang Song Guofang Li Jiao Jin Jingjing Gao Yongtian Qin Hongqiu Wang Jinpeng Cheng Zonghua Liu jihua tang Zhiyuan Fu Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy Henan Agricultural UniversityZhengzhou 450046HenanChina The Shennong Laboratory Zhengzhou 450002HenanChina Hebi Academy of Agricultural Sciences Hebi 458030HenanChina Yunnan tang jihua Expert Workstation/Zhaotong Academy of Agricultural Sciences Zhaotong 657000YunnanChina

Mitochondrial protein translation that is essential for aerobic energy production includes four essential steps of the mitochondrial ribosome cycle,namely,initiation,elongation,termination of the polypeptide,and ribosome *** termination initiates when a stop codon enters the A site of the mitochondrial ribosome where it is recognized by a dedicated peptide release factor(RF).However,RFs and mechanisms involved in translation in plant mitochondria,especially in monocotyledons,remain largely ***,we identified a crumpled kernel(crk5 allele)mutant,with significantly decreased kernel size,100-kernel weight,and an embryo-lethal *** Crk5 allele was isolated using map-based cloning and found to encode a mitochondrial localization *** it is an ortholog of Arabidopsis mitochondrial RF2a,we named the gene ***2a is missing the 5th–7th exons in the crk5 resulting in deletion of domains containing motifs GGQ and SPF that are essential for release activity of RF,mitochondrial ribosome binding,and stop codon *** blot and qRT-PCR analyses indicate that the crk5 mutation results in abnormal mitochondrion structure and ***,we observed a feedback loop in the crk5 with up-regulated transcript levels detected for several mitochondrial ribosome and mitochondrial-related components,in particular mitochondrial complexes CI,CIV,and a ribosome assembly related ***,our data support a crucial role for ZmmtRF2a in regulation of mitochondrial structure and function in maize.

关键词： Embryo lethality Mitochondrion Peptide release factor 2 Zea mays

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