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Genetic Studies on Wheat Genic Male Sterility and Inheritance Mode of Male Sterility in Plant

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Agricultural Sciences in China 2000年第1期 24-30页

作者： Liu Binghua institute of crop breeding and cultivation Chinese Academy of Agricultural Science Crop Genetics and Breeding Key Lab of Nation Agriculture DepartmentBeijing 100081

Advance in the genetic study on male sterility in plant was reviewed. A dominant gene Ms2(Ta1) for male sterility, which hasa recombination percentage of 31. 16 with the centromere , is located on the short arm of chromosome 4D in Taigu wheat. Dwarfing male sterile wheat is a dwarf marked male sterile material, carrying the gene Ms2 for male sterility and dominant dwarf gene Rht10. The two genes, Ms2 and Rht10, are closely linked with a crossing-over value as small as 0. 18. The linkage character of genes Ms2 and Rht10 was transferred to CS ph1b mutant and octoploid triticale. A female-male sterility controlled by a set of genes and a male sterility carrying double recessive genes were discovered in wheat. The hypothesis of the origin of the male sterile form for gene interaction was proposed. An inheritance mode of fertility in sib-mating progenies of reces sive genic male sterile material in plant was established.

关键词： Male sterility Genetic study Inheritance mode

Improvement of Plant Regeneration from Immature Embryos of Wheat Infected by Agrobacterium tumefaciens

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Agricultural Sciences in China 2011年第3期10卷 317-326页

作者： TAO Li-li YIN Gui-xiang DU Li-pu SHI Zheng-yuan SHE Mao-yun XU Hui-jun YE Xing-guo National Key Facility of crop Gene Resources and Genetic Improvement Key Laboratory of Crop Genetics and Breeding Ministry ofAgriculture~Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Wheat, one of the most important food crops, has been extensively studied with respects to plant regeneration and transformation employing the immature embryos as recipient tissues. However, the transformed tissues often become severely necrotic after co-cultivation with Agrobacterium, which is one of the major obstacles in gene delivery. In this study, wheat varieties CB037, Kenong 199, Xinchun 9, Lunxuan 987, and Shi 4185 showed desirable culture potential or high infection ability in Agrobacterium-mediated transformation. Similarly, optimal regeneration conditions were determined by testing their ability to inhibit the cell necrosis and cell death phenotype. Two auxins of 2,4-dichlorophenoxyacetic acid （2,4-D） and 3,6-dichloro-o-anisic acid （dicamba） were evaluated for highly significant effect on both callus and plantlet production, although they were genotype-dependent in wheat. Substitution of 2,4-D by dicamba enhanced the growth and regeneration ability of callus from the immature embryos of most genotypes tested. The callus growth state couldn’t be modified by adding antioxidants such as ascorbic acid, cysteine, and silver nitrate or organic additives such as thiamine HCl and asparagine to the media. On the contrary, the best tissue statement and plant regeneration was achieved by employing the media containing the simplest MS （Murashige and Skoog） components and dicamba without organic components and vitamins. Thereby, our results are thought to inhibit wheat cell necrosis effectively and suggested to be used for more wheat genotypes.

关键词： wheat immature embryos Agrobacterium tumefaciens transformation genotypes plant regeneration

ZmbZIP27 regulates nitrogen-mediated leaf angle by modulating lignin deposition in maize

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The crop Journal 2024年第5期12卷 1404-1413页

作者： Huan Chen Xiaoping Gong Yu Guo Jingjuan Yu Wen-Xue Li Qingguo Du State Key Laboratory of crop Gene Resources and breeding National Engineering Laboratory for Crop Molecular BreedingInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing 100193China

In grain crops such as maize(Zea mays),leaf angle(LA)is a key agronomic trait affecting light interception and thus planting density and ***(N)affects LA in plants,but we lack a good understanding of how N regulates ***,we report that N deficiency enhanced lignin deposition in the ligular region of maize *** situ hybridization showed that the bZIP transcription factor gene ZmbZIP27 is mainly expressed in the phloem of maize vascular *** N-sufficient conditions,transgenic maize overexpressing ZmbZIP27 showed significantly smaller LA compared with wild type(WT).By contrast,zmbzip27_(ems)mutant showed larger LA under both N-deficient and N-sufficient conditions compared with *** of ZmbZIP27 enhanced lignin deposition in the ligular region of maize in the *** further demonstrated that ZmbZIP27 could directly bind the promoters of the microRNA genes ZmMIR528a and ZmMIR528b and negatively regulate the expression levels of ***528 knockdown transgenic maize displayed erect architecture in the field by increasing lignin content in the ligular region of *** together,these results indicate that ZmbZIP27 regulates N-mediated LA size by regulating the expression of ZmmiR528 and modulating lignin deposition in maize.

关键词： Maize Nitrogen Leaf angle Ligular region Lignin deposition

AN AMPEROMETRIC BIOSENSOR BASED ON COVALENT IMMOBILIZATION OF ASCORBATE OXIDASE ON BIOCOMPATIABLE AND LOW-TOXIC POLY(THIOPHENE-3-ACETIC ACID) MATRIX

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Chinese Journal of Polymer Science 2012年第5期30卷 705-718页

作者： Dong Li Yang-ping Wen 徐景坤贺浩华 Ming Liu Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University Key Laboratory of crop Physiology Ecology and Genetic BreedingMinistry of EducationKey Laboratory of PhysiologyEcology and Cultivation of Double Cropping RiceMinistry of AgricultureJiangxi Agricultural University

The biocompatiable and low-toxic poly（thiophene-3-aeetic acid）（PTAA） matrix was successfully electrosynthesized in ionic liquid 1-butyl-3-metbylimidazolium hexafluorophosphate （BmimPF6） in comparison with the electrosynthesis of PTAA matrix in acetonitrile （ACN）. Ascorbate oxidase （AO） was used as a model for the development and application of biosensor. Vitamin C （VC） biosensors were facilely fabricated by the covalent immobilization of AO molecules on PTAA matrices electrosynthesized in ACN containing tetrabutylammonium tetrafluoroborate and BmimPF6, respectively. Electrochemical impedance spectroscopy, scanning electron microscopy and FTIR spectroscopy indicated that AO molecules were covalently immobilized on PTAA matrices. Parameters of the as-obtained biosensors such as working potential, pH and temperature have been optimized. The amperometric biosensor based on PTAA matrix electrosynthesized in BmimPF6 exhibited wider linear range, lower detection limit, higher sensitivity and bioaffinity, and better operational and storage stability than that electrosynthesized in ACN under optimal conditions. The as-obtained biosensor based on PTAA matrix electrosynthesized in BmimPF6 was employed for the detection of VC content in comme：rcial juices, and the result was close to the data given by manufacturers. Excellent results indicate that the PTAA matrix electrosynthesized in ionic liquid is a promising platform for the covalent immobilization of biologically-active species and the development of biosensors.

关键词： Poly(thiophene-3-acetic acid) Ionic liquids Ascorbate oxidase Vitamin C Biosensor.

Fine mapping of two recessive genes TaFLA1 and TaSPL8 controlling flag leaf angle in bread wheat

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The crop Journal 2024年第4期12卷 1159-1167页

作者： Qiushi Wang Jiaxing Bai Hongchun Xiong Yongdun Xie Chaojie Wang Jiayu Gu Linshu Zhao Huiyuan Li Jinfeng Zhang Shirong Zhao Yuping Ding Zhengwu Fang Huijun Guo Luxiang Liu College of Agriculture Yangtze University/MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River(Co-Construction by Ministry and Province)Jingzhou 434000HubeiChina State Key Laboratory of crop Gene Resources and breeding/National Engineering Laboratory of crop Molecular breeding/CAEA Research and Development Centre on Nuclear Technology Applications for Irradiation Mutation breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Flag leaf angle is one of the key target traits in high yield wheat breeding.A smaller flag leaf angle reduces shading and enables plants to grow at a higher density,which increases *** we identified a mutant,je0407,with an 84.34%-89.35%smaller flag leaf angle compared with the wild *** mutant also had an abnormal lamina joint and no ligule or *** analysis indicated that the ligule was controlled by two recessive genes,which were mapped to chromosomes 2AS and *** mutant allele on chromosome 2AS was named Tafla1b,and it was fine mapped to a 1 Mb physical *** mutant allele on chr.2DL was identified as Taspl8b,a novel allele of TaSPL8 with a missense mutation in the second exon,which was used to develop a cleaved amplified polymorphic sequence marker.F3 and F4 lines derived from crosses between Jing411 and je0407 were genotyped to investigate interactions between the Tafla1b and Taspl8b *** with the Tafla1b/Taspl8a genotype had 58.41%-82.76%smaller flag leaf angles,6.4%-24.9%shorter spikes,and a greater spikelet density(0.382 more spikelets per cm)compared with the wild *** with the Tafla1a/Taspl8b genotype had 52.62%-82.24%smaller flag leaf angles and no differences in plant height or spikelet density compared with the wild ***1b/Taspl8b plants produced erect leaves with an abnormal lamina *** two alleles had dosage effects on ligule formation and flag leaf angle,but no significant effect on thousand-grain *** mutant alleles provide novel resources for improvement of wheat plant architecture.

关键词： Wheat Ligule Flag leaf angle Fine mapping Tafla1 Taspl8

Distribution of Grain Hardness in Chinese Wheats and Genetic Analysis

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Agricultural Sciences in China 2002年第11期1卷 1190-1198页

作者： ZHOU Yan-hua, HE Zhong-hu, YAN Jun, ZHANG Yan, WANG De-sen and ZHOU Gui-ying(institute of crop breeding and cultivation, Chinese Academy of Agricultural Sciences / National Wheat Improvement Center,Beijing 100081 ,P. R. China CIMMYT China Office, C/OCAAS, Beijing 100081 ,P. R. China) institute of crop breeding and cultivation Chinese Academy of Agricultural Sciences/National Wheat Improvement CenterBeijing 100081 P.R.China institute of crop breeding and cultivation Chinese Academy of Agricultural Sciences/National Wheat Improvement CenterBeijing 100081 P.R.China CIMMYT China Office C/O CAAS Beijing 100081 P.R.China

A hundred winter wheat and 41 spring wheat cultivars and advanced lines were used to investigate the distribution of grain hardness in Chinese wheats and correlations between grain hardness and other kernel traits. P1, P2, F1 , F2 and F3 from three crosses, i. e. , Liken2/Yumai2, 85Zhong33/Wenmai6 and 85Zhong33/95Zhong459 were sown to study the genetics of grain hardness. Significant correlation was observed between hardness measured by Single Kernel Characteristic System 4100 (SKCS 4100) and Near Infrared (NIR) Spectroscopy, r ranging from 0.85 to 0.94. Chinese wheat is a mixed population in terms of hardness, ranging from very soft to very hard. For autumn-sown wheat, on average, grain hardness decreases from north to south and spring-sown wheat is dominant with hard type. Hardness is negatively associated with flour color, and its associations with flour yield and ash content differ in winter and spring wheats. Grain hardness is controlled by a major gene and several minor genes with additive effect mostly, but dominant effect is also observed, with heritability of 0.78.

关键词： T. aestivum,Common wheat Grain hardness Processing quality Genetic analysis

GmNF-YC4 delays soybean flowering and maturation by directly repressing GmFT2a and GmFT5a expression

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Journal of Integrative Plant Biology 2024年第7期66卷 1370-1384页

作者： Yupeng Cai Li Chen Xiaoqian Liu Weiwei Yao Wensheng Hou State Key Laboratory of crop Gene Resources and breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Ministry of Agriculture Key Laboratory of Soybean Biology(Beijing) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Flowering time and growth period are key agronomic traits which directly affect soybean(Glycine max(L.)Merr.)adaptation to diverse latitudes and farming *** FLOWERING LOCUS T(FT)homologs GmFT2a and GmFT5a integrate multiple flowering regulation pathways and significantly advance flowering and maturity in *** the genes responsible for regulating GmFT2a and GmFT5a will improve our understanding of the molecular mechanisms governing growth period in *** this study,we identified the Nuclear Factor Y-C(NFY-C)protein GmNF-YC4 as a novel flowering suppressor in soybean under long-day(LD)***-YC4 delays flowering and maturation by directly repressing the expression of GmFT2a and *** addition,we found that a strong selective sweep event occurred in the chromosomal region harboring the GmNF-YC4 gene during soybean *** GmNF-YC4Hap3 allele was mainly found in wild soybean(Glycine soja Siebold&Zucc.)and has been eliminated from *** landraces and improved cultivars,which predominantly contain the GmNF-YC4Hap1 ***,the Gmnf-yc4 mutants displayed notably accelerated flowering and maturation under LD *** alleles may prove to be valuable genetic resources for enhancing soybean adaptability to higher latitudes.

关键词： CRISPR/Cas9 early flowering and maturity GmNF-YC4 regional adaptability soybean

Structural variation(SV)-based pan-genome and GWAS reveal the impacts of SVs on the speciation and diversification of allotetraploid cottons

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Molecular Plant 2023年第4期16卷 678-693页

作者： Shangkun Jin Zegang Han Yan Hu Zhanfeng Si Fan Dai Lu He Yu Cheng Yiqjan Li Ting Zhao Lei Fang Tianzhen Zhang Zhejang Provincial Engineering Center for crop Precision breeding Advanced Seed InstitutePlant Precision Breeding AcademyCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina Hainan institute of Zhejiang University Sanya 572025China

Structural variations(SVs)have long been described as being involved in the origin,adaption,and domes-tication of ***,the underlying genetic and genomic mechanisms are poorly ***,we report a high-quality genome assembly of Gossypium barbadense ***,a landrace that is closely related to formation of extra-long-staple(ELS)cultivated *** SV-based pan-genome(Pan-SV)was then constructed using a total of 182593 non-redundant SVs,including 2236 inversions,97398 insertions,and 82959 deletions from 11 assembled genomes of allopolyploid *** utility of this Pan-sV was then demonstrated through population structure analysis and genome-wide association studies(GWASs).Using segregation mapping populations produced through crossing ELS cotton and the landrace along with an Sv-based GWAs,certain SVs responsible for speciation,domestication,and improvement in tetraploid cottons were ***,some of the SVs presently identified as associated with the yield and fiber quality improvement had not been identified in previous SNP-based *** particular,a 9-bp insertion or deletion was found to associate with elimination of the interspecific reproductive isolation between Gossypium hirsutum and ***,this study provides new insights into genome-wide,gene-scale SVs linked to important agronomic traits in a major crop spe-cies and highlights the importance of sVs during the speciation,domestication,and improvement of culti-vated crop species.

关键词： genome assembly structural variations SV-based pan-genome GWAS introgression QTL mapping

Development of a MaizeGerm50K array and application to maize genetic studies and breeding

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The crop Journal 2024年第6期12卷 1686-1696页

作者： Honghui Guan Yaxuan Lu Xinchun Li Bei Liu Yongxiang Li Dengfeng Zhang Xuyang Liu Guanhua He Yu Li Hongwu Wang Tianyu Wang Chunhui Li State Key Laboratory of crop Gene Resources and breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Genotyping arrays based on single nucleotide polymorphisms(SNPs)provide a low-cost,highthroughput *** development of a SNP array that fully reflects the genetic diversity of maize(Zea mays L.)germplasm and is applicable to molecular breeding programs is *** this study,we developed a MaizeGerm50K array comprising 50,852 SNPs selected from the resequencing data of 1604 maize inbred lines and other markers.A genome-wide association study using a landrace panel genotyped with the array permitted mapping of several known *** also verified a candidate gene,RNA-binding motif protein 24-like 1(ZmRBM24L1),delaying flowering through overexpression *** selection for yield and agronomic traits showed high prediction *** MaizeGerm50K array is thus a valuable genomic tool for maize genetic studies and breeding.

关键词： Maize Genotyping Liquid array Single nucleotide polymorphism(SNP) Molecular breeding