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Quantitative Trait Loci Mapping of Dark-Induced Senescence in Winter Wheat(Triticum aestivum)

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Journal of Integrative Plant Biology 2012年第1期54卷 33-44页

作者： Hongwei li Fanyun lin Gui Wang Ruilian Jing Qi Zheng Bin li zhensheng li State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology the Chinese Academyof Sciences Beijing 100101 China Institute of Crop Sciences the Chinese Academy of Agricultural Sciences Beijing 100081 China

In order to explore the genetics of dark-induced senescence in winter wheat （Triticum aestivum L.）, a quantitative trait loci （QTL） analysis was carried out in a doubled haploid population developed from a cross between the varieties Hanxuan 10 （HX） and Lumai 14 （LM）. The senescence parameters chlorophyll content （Chl a＋b, Chl a, and Chl b）, original fluorescence （Fo）, maximum fluorescence level （Fm）, maximum photochemical efficiency （FvlFm）, and ratio of variable fluorescence to original fluorescence （FvlFo） were evaluated in the second leaf of whole three-leaf seedlings subjected to 7 d of darkness. A total of 43 QTLs were identified that were associated with dark-induced senescence using composite interval mapping. These QTLs were mapped to 20 loci distributed on 11 chromosomes： 1B, 1D, 2A, 2B, 3B, 3D, 5D, 6A, 6B, 7A, and 7B. The phenotypic variation explained by each QTL ranged from 7.5% to 19.4%. Eleven loci coincided with two or more of the analyzed parameters. In addition, 14 loci co-located or were linked with previously reported QTLs regulating flag leaf senescence, tolerance to high light stress, and grain protein content （Gpc）, separately.

关键词： chlorophyll content photosynthetic efficiency senescence Triticum aestivum.

Study on estimate method of wave velocity and quality fac-tor to fault seals

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Chinese Science Bulletin 2005年第19期50卷 2243-2248页

作者： li zhensheng liU Deliang liU Bo YANG Qiang li dingming The School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China Research Institute of Petroleum Exploration and Development Petro- China Langfang 065007 China

Based on ultrasonic test of fault rocks, the re-sponses for wave velocity and quality factor (Q value) to lithology, porosity and permeability of fault rocks and me-chanical property of faults are studied. In this paper, a new quantitative estimate method of fault seals is originally of-fered. The conclusions are as follows: (1) Wave velocity and Q value increase and porosity decreases with the increase in stress perpendicular to joint; (2) In compressive and com-presso-shear fault rocks that are obviously anisotropic com-pared with their original rocks, the wave velocity and Q value are greater in the direction parallel with foliation, and usually less perpendicular to it. In tensile and tenso-shear fault rocks that are not obviously anisotropic, the wave ve-locity and Q value are under that of original rocks; (3) In foliated fault rocks, the direction with minimal wave velocity and Q value is the best direction for sealing; on the contrary it is the best for flowing; (4) Structural factures develop mainly along foliation, the minimal wave velocity and Q value reflect the flowing capacity in parallel direction to fo-liation, and the maximal wave velocity as well as Q value reflect the sealing capacity in normal direction to foliation. The new estimate method is based upon contrast of wave velocity and Q value between fault rocks and their original rocks, and is divided into three parts that are respectively to identify rock’s lithology, to judge mechanic property of faults and to Judge sealing capacity of faults. Although there is vast scale effect between ultrasonic wave and seismic wave, they have similar regularity of response to fabric and porosity of faults. This research offers new application for seismic data and petrophysical basis for seismological estimation of fault seals. The estimate precision will be improved with the en-hancement of three-dimensional seismic prospecting work.

关键词：超声波各向异性波速品质因素岩石学渗透性

Cytogenetic identification and molecular marker development for the novel stripe rust-resistant wheat- Thinopyrum intermedium translocation line WTT11

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aBIOTECH 2021年第4期2卷 343-356页

作者： Guotang Yang Qi Zheng Pan Hu Hongwei li Qiaoling Luo Bin li zhensheng li State Key Laboratory of Plant Cell and Chromosome Enginering Institute of Genetics and Developmental Biology The Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Stripe rust,caused by Puccinia striformis ***(Pst),is one of the most destructive diseases of wheat(Triticum aestivum L)*** 78829,a partial amphidiploid developed by crossing common wheat with Thinopyrum intermedium,is immune to wheat stripe *** transfer the resis-tance gene of this excellent germplasm resource to wheat,the tr anslocation line WTT11 was produced by pollen irradiation and assessed for immunity to stripe rust races CYR32,CYR33 and CYR34.A novel stripe rust-resistance locus derived from *** was confirmed by linkage and diagnostic marker *** cytogenetic analyses revealed that WTT11 carries a TTh 2DL *** breakpoint of 1B was located at 95.5 MB,and the alien segments were found to be homoeologous to wheat-group chromosomes 6 and 7 according to a wheat660K single-nucleotide polymorphism(SNP)array *** previously developed PCR-based markers were confirmed to rapidly trace the alien segments of WTT11,and 20 kompetitive allele-specific PCR(KASP)markers were developed to enable genotyping of *** and common *** of agronomic traits in two consecutive crop seasons uncovered some favorable agronomic traits in WTT11,such as lower plant height and longer main panicles,that may be applicable to wheat *** a novel genetic resource,the new resistance locus may be useful for wheat disease-resistance breeding.

关键词： Wheat-Thinopyrum intermedium translocation line CYR34 Cytogenetic analyses Wheat660k SNP array PCR-based markers KASP markers

Transcriptome analysis of salt-stress response in three seedling tissues of common wheat

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The Crop Journal 2019年第3期7卷 378-392页

作者： Qiaoling Luo Wan Teng Shuang Fang Hongwei li Bin li Jinfang Chu zhensheng li Qi Zheng State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China National Centre for Plant Gene Research (Beijing) Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Xiaoyan 60(XY60) is a new wheat variety bred in the laboratory of zhensheng *** salt treatment, seedlings of XY60 maintain green leaves and produce longer roots than the high yielding cultivar Zhongmai 175(ZM175).To explain these different phenotypes we carried out an RNA-Seq analysis using 12 samples from three tissues of both varieties subjected to salt and control *** comparing data from the salt treated plants with the control, 703, 979, and 1197 differentially expressed genes(DEGs) were detected in new leaves, old leaves, and roots of XY60, *** corresponding numbers for ZM175 were 613, 1401, and *** most significantly enriched Gene Ontology(GO) terms and KEGG pathways were associated with polyunsaturated fatty acid(PUFA) metabolism in both new and old leaves from *** were associated with photosynthesis and energy metabolism in *** most significantly enriched KEGG pathway in roots of both varieties was “glucosinolate biosynthesis”.In addition, jasmonic acid(JA) concentration in XY60 was higher than in ZM175, although it increased significantly in both varieties following salt *** in relative expression levels of AOS, MYC2, and JAZ revealed by qRT-PCR were concordant with those from *** results suggest that PUFAs may contribute to salt tolerance in common wheat by enhancing the photosynthetic system and JA-related pathways.

关键词： Jasmonic acid Photosynthesis RNA-Seq Salt tolerance Triticum aestivum

Neoproterozoic Crustal Reworking and Growth in the Zhangbaling Uplift, Tan-Lu Fault Zone: Evidence from the Feidong Complex and Zhangbaling Group

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Acta Geologica Sinica(English Edition) 2020年第6期94卷 1921-1939页

作者： NIU Manlan CAI Qianru WU Qi YUAN Xiaoyu SUN Yi li Xiucai li Chen ZHU Guang li zhensheng ZHANG Shuai School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Intensive mid-Neoproterozoic magmatism is the salient feature of the Yangtze Block,preserving abundant information about crustal reworking and *** U-Pb-Lu-Hf isotope analysis was performed on material from the Feidong Complex(FDC)and Zhangbaling Group(ZBLG)of the Zhangbaling Uplift,in order to determine the age and magmatic source of the Neoproterozoic igneous rocks as well as the detrital provenance for the sedimentary rocks,to further provide important data for understanding the mid-Neoproterozoic crustal evolution of the Northeast Yangtze *** amphibolite and gneissic granites in the Feidong Complex(FDC)gave similar protolith ages of 782-776 *** synmagmatic zircons exhibited variable negativeεHf(t)values of-26.9 ***(ca.2.4 Ga)to late Paleoproterozoic(ca.2.0-1.9 Ga)inherited zircons were found in the gneissic monzogranite,with negativeεHf(t)values of-11.2 to-7.2,indicating strong reworking of the ancient crustal materials of the Northeast Yangtze *** the amphibolites represent minor crustal growth through emplacement of continental rifting-related mafic *** quartz-keratophyres in the Xileng Formation of the ZBLG in contrast systematically yield young protolith crystallization ages of 754-727 Ma with highεHf(t)values of-2.0 to+5.6,indicating their derivation from the reworking of juvenile crustal *** detrital zircons from the metasiltstone in the Beijiangjun Formation yield variable^(206)Pb/^(238)U ages(871-644 Ma)with a peak age at 741±11 Ma andεHf(t)values of-4.3 to+5.3,which is consistent with those of the Xileng Formation,but distinct from the FDC,indicating that the provenance of the metasiltstone is primarily the underlying Xileng *** mid-Neoproterozoic igneous and sedimentary rocks of the Zhangbaling Uplift were products from continental rifting zones along the northern margin of the Yangtze Block,situated in different positions from the Susong Complex and the Haizhou *** transition from a

关键词： zircon U-Pb age Lu-Hf isotope crustal reworking Neoproterozoic magmatism Zhangbaling Uplift

The contribution of distant hybridization with decaploid Agropyron elongatum to wheat improvement in China

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Journal of Genetics and Genomics 2008年第8期35卷 451-456页

作者： zhensheng li Bin li Yiping Tong State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Wheat is a staple food crop in the world as well as in China. Because of the progress of wheat breeding and other agricultural ＂sci-technologies, the wheat grain yield per unit area has increased more than five folds from 1952 to 2006 in China. The first part of this article briefly reviews the history of wheat breeding in China. Second, the establishment of ＂Triticum aestivum-Agropyron＂ distant hybridization system and its contribution to wheat production and breeding in China are summarized. Finally, the future challenges of wheat breeding are discussed, which include how to increase the utilization efficiencies of water, soil nutrient and light energy through breeding. As an example, our research progress on how to increase light use efficiency in wheat through breeding is introduced and discussed.

关键词： wheat improvement distant hybridization Agropyron elongatum light use efficiency

Establishment of wheat-Thinopyrum ponticum translocation lines with resistance to Puccinia graminis f. sp. tritici Ug99

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Journal of Genetics and Genomics 2019年第8期46卷 405-407页

作者： Hongwei li Willem H.P.Boshoff Zacharias A.Pretorius Qi Zheng Bin li zhensheng li State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China Department of Plant Sciences University of the Free StateBloemfontein9300South Africa

Stem rust, caused by Puccinia graminis Pers.:Pers. f. sp. tritici Eriks. & E. Henn. (Pgt), is a destructive wheat disease and has the potential to cause significant yield losses (Olivera et al., 2015;Soko et al., 2018). The emergence of Pgt race TTKSK, virulent to the widely deployed stem rust resistance gene Sr31 and originally named as isolate Pgt-Ug99 (Pretorius et al., 2000).

关键词： Establishment wheat-Thinopyrum ponticum

Effects of stem structure andcell wall components on bending strength in wheat

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Chinese Science Bulletin 2006年第7期51卷 815-823页

作者： WANG Jian ZHU Jinmao liN Qinqin li Xiaojuan TENG Nianjun li zhensheng li Bin ZHANG Aimin liN Jinxing Key Laboratory of Photosynthesis and Molecular Environment Physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 China College of life Sciences Fujian Normal University Fuzhou 350007 China The State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Morphological traits, anatomical features, chemical components and bending stress in the stems of three genotypes of wheat (Triticum aestivum L.), namely Xiaoyan54, 8602 and Xiaoyan81, were ex- amined by means of light microscopy coupled with Fourier transform infrared spectroscopy (FTIR). No- ticeable changes in morphological and anatomical traits were observed, including outer radius of stem, the ratio of stem outer radius to stem wall thickness, various tissue proportions and variations among dif- ferent types of vascular bundles. The results of chemical analysis revealed that Xiaoyan81 had the highest cellulose content in comparison with Xiao- yan54 and 8602, whereas lignin level in Xiaoyan81 was lower than that in 8602 but higher that that in Xiaoyan54. Bending stress analysis demonstrated that Xiaoyan81 may be the main target for identifica- tion, for it had the highest bending stress among the stems of three genotypes. Associated with bending stress, all the results presented here suggested that the ratio of stem wall thickness to its outer radius, schlerenchyma tissue proportion, the average num- ber of big VB per unit and the cellulose content are four important factors affecting the mechanical strength of Xiaoyan81 wheat stems, which can be considered as the key parameters for selecting varie- ties with bending stress. Therefore, it was suggested that in the selection of lodging resistant cultivars one should consider those characterized with large ratio of outer radius of stem to stem wall thickness, great-erschlerenchyma tissue proportion, high average number of big VB per unit with high cellulose content in their stems.

关键词：弯曲应力小麦茎维管束纤维素木质素

Two-cut system suggested for tall wheatgrass to balance herbage yield and quality in the coastal saline–alkaline land around the Bohai Sea

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Grassland Research 2024年第2期3卷 132-146页

作者： Wei li Qiang Xiao Hongwei li Hao Chang Qi Zheng Bin li zhensheng li Key Laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina College of Agriculture Yangtze UniversityJingzhouHubeiChina School of Agricultural Sciences Jiangxi Agricultural UniversityNanchangJiangxiChina Dongying Modern Agricultural Demonstration Zone Management Center DongyingShandongChina

Background:Tall wheatgrass is a perennial salt-tolerant bunchgrass,which is a promising candidate for establishing a“Coastal Grass Belt”in China,particularly in the coastal saline–alkaline soils surrounding the Bohai ***:Seven harvesting treatments were performed to explore the optimal harvesting time and frequency for tall wheatgrass in coastal *** dry matter yield(DMY)and forage nutritional values were investigated for each *** correlation between harvesting time and frequency thereof among the investigated traits was also ***:The results showed that the two-cut on June 18 and October 29 produced the highest *** two-cut on May 26 and October 29 produced a relatively high crude protein(CP)*** DMY,contents of neutral detergent fiber(NDF),acid detergent fiber(ADF),and crude cellulose(CC)as well as CP yield were positively correlated to plant height,while the CP content and the relative feed value(RFV)were negatively correlated to plant *** accumulating growing degree days,accumulated precipitation,and sunshine duration were positively correlated with plant height,DMY,contents of NDF,ADF,and CC as well as CP yield,but negatively correlated with CP content and RFV for the first ***:The two-cut treatment at the end of May and October may be suitable for tall wheatgrass in the“Coastal Grass Belt”targeted area.

关键词： Coastal Grass Belt Elytrigia elongata saline and alkaline soils tall wheatgrass Thinopyrum ponticum