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https://www.readbyqxmd.com/read/29030254/complete-structure-and-variation-of-the-chloroplast-genome-of-agropyron-cristatum-l-gaertn
#1
Ning Chen, Li-Na Sha, Zhen-Zhen Dong, Chao Tang, Yi Wang, Hou-Yang Kang, Hai-Qin Zhang, Xue-Bin Yan, Yong-Hong Zhou, Xing Fan
Agropyron cristatum (L.) Gaertner, a perennial grass in the tribe Triticeae (Poaceae), is a wild relative of cereal crops that is suitable for genetic improvement. In this study, we first sequenced the complete chloroplast (cp) genome of Ag. cristatum using Hiseq4000 PE150. The Ag. cristatum chloroplast genome is 135,554bp in length, has a typical quadripartite structure and contains 76 protein-coding genes, 29 tRNA genes and four rRNA genes. The cp genome of Ag. cristatum was used for comparison with other seven Triticeae species...
October 10, 2017: Gene
https://www.readbyqxmd.com/read/28983310/rna-seq-analysis-provides-the-first-insights-into-the-phylogenetic-relationship-and-interspecific-variation-between-agropyron-cristatum-and-wheat
#2
Shenghui Zhou, Baiqiang Yan, Fei Li, Jinpeng Zhang, Jing Zhang, Huihui Ma, Weihua Liu, Yuqing Lu, Xinming Yang, Xiuquan Li, Xu Liu, Lihui Li
Agropyron cristatum, which is a wild grass of the tribe Triticeae, grows widely in harsh environments and provides many desirable genetic resources for wheat improvement. However, unclear interspecific phylogeny and genome-wide variation has limited the utilization of A. cristatum in the production of superior wheat varieties. In this study, by sequencing the transcriptome of the representative tetraploid A. cristatum Z559 and the common wheat variety Fukuhokomugi (Fukuho), which are often used as parents in a wide cross, their phylogenetic relationship and interspecific variation were dissected...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28931929/a-resource-of-large-scale-molecular-markers-for-monitoring-agropyron-cristatum-chromatin-introgression-in-wheat-background-based-on-transcriptome-sequences
#3
Jinpeng Zhang, Weihua Liu, Yuqing Lu, Qunxing Liu, Xinming Yang, Xiuquan Li, Lihui Li
Agropyron cristatum is a wild grass of the tribe Triticeae and serves as a gene donor for wheat improvement. However, very few markers can be used to monitor A. cristatum chromatin introgressions in wheat. Here, we reported a resource of large-scale molecular markers for tracking alien introgressions in wheat based on transcriptome sequences. By aligning A. cristatum unigenes with the Chinese Spring reference genome sequences, we designed 9602 A. cristatum expressed sequence tag-sequence-tagged site (EST-STS) markers for PCR amplification and experimental screening...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28921769/construction-of-agropyron-gaertn-genetic-linkage-maps-using-a-wheat-660k-snp-array-reveals-a-homoeologous-relationship-with-the-wheat-genome
#4
Shenghui Zhou, Jinpeng Zhang, Yonghe Che, Weihua Liu, Yuqing Lu, Xinming Yang, Xiuquan Li, Jizeng Jia, Xu Liu, Lihui Li
Agropyron Gaertn. (P genome) is a wild relative of wheat that harbours many genetic variations that could be used to increase the genetic diversity of wheat. To agronomically transfer important genes from the P genome to a wheat chromosome by induced homoeologous pairing and recombination, it is necessary to determine the chromosomal relationships between Agropyron and wheat. Here, we report using the wheat 660K single nucleotide polymorphism (SNP) array to genotype a segregating Agropyron F1 population derived from an interspecific cross between two cross-pollinated diploid collections 'Z1842' [A...
September 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28886152/molecular-cytogenetic-identification-of-a-novel-wheat-agropyron-elongatum-chromosome-translocation-line-with-powdery-mildew-resistance
#5
Xiaojun Li, Xiaoling Jiang, Xiangdong Chen, Jie Song, Cuicui Ren, Yajuan Xiao, Xiaohui Gao, Zhengang Ru
Agropyron elongatum (Host.) Neviski (synonym, Thinopyrum ponticum Podp., 2n = 70) has been used extensively as a valuable source for wheat breeding. Numerous chromosome fragments containing valuable genes have been successfully translocated into wheat from A. elongatum. However, reports on the transfer of powdery mildew resistance from A. elongatum to wheat are rare. In this study, a novel wheat-A. elongatum translocation line, 11-20-1, developed and selected from the progenies of a sequential cross between wheat varieties (Lankaoaizaoba, Keyu 818 and BainongAK 58) and A...
2017: PloS One
https://www.readbyqxmd.com/read/28797236/genome-wide-transcriptome-profiling-provides-overwintering-mechanism-of-agropyron-mongolicum
#6
Jiancai Du, Xiaoquan Li, Tingting Li, Dongyang Yu, Bing Han
BACKGROUND: The mechanism of winter survival for perennials involves multiple levels of gene regulation, especially cold resistance. Agropyron mongolicum is one important perennial grass species, but there is little information regarding its overwintering mechanism. We performed a comprehensive transcriptomics study to evaluate global gene expression profiles regarding the winter survival of Agropyron mongolicum. A genome-wide gene expression analysis involving four different periods was identified...
August 10, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28533082/contrasting-evolutionary-patterns-of-multiple-loci-uncover-new-aspects-in-the-genome-origin-and-evolutionary-history-of-leymus-triticeae-poaceae
#7
Li-Na Sha, Xing Fan, Jun Li, Jin-Qiu Liao, Jian Zeng, Yi Wang, Hou-Yang Kang, Hai-Qin Zhang, You-Liang Zheng, Yong-Hong Zhou
Leymus Hochst. (Triticeae: Poaceae), a group of allopolyploid species with the NsXm genomes, is a perennial genus with diversity in morphology, cytology, ecology, and distribution in the Triticeae. To investigate the genome origin and evolutionary history of Leymus, three unlinked low-copy nuclear genes (Acc1, Pgk1, and GBSSI) and three chloroplast regions (trnL-F, matK, and rbcL) of 32 Leymus species were analyzed with those of 36 diploid species representing 18 basic genomes in the Triticeae. The phylogenetic relationships were reconstructed using Bayesian inference, Maximum parsimony, and NeighborNet methods...
May 19, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28531235/rna-seq-analysis-of-gene-expression-for-floral-development-in-crested-wheatgrass-agropyron-cristatum-l
#8
Fangqin Zeng, Bill Biligetu, Bruce Coulman, Michael P Schellenberg, Yong-Bi Fu
Crested wheatgrass [Agropyron cristatum L. (Gaertn.)] is widely used for early spring grazing in western Canada and the development of late maturing cultivars which maintain forage quality for a longer period is desired. However, it is difficult to manipulate the timing of floral transition, as little is known about molecular mechanism of plant maturity in this species. In this study, RNA-Seq and differential gene expression analysis were performed to investigate gene expression for floral initiation and development in crested wheatgrass...
2017: PloS One
https://www.readbyqxmd.com/read/28394901/chromosomal-localization-of-genes-conferring-desirable-agronomic-traits-from-agropyron-cristatum-chromosome-1p
#9
Cuili Pan, Qingfeng Li, Yuqing Lu, Jinpeng Zhang, Xinming Yang, Xiuquan Li, Lihui Li, Weihua Liu
Agropyron cristatum (L.) Gaertn. (2n = 4x = 28, PPPP), a wild relative of common wheat, possesses many potentially valuable genes for wheat breeding. To transfer these genes into wheat, a series of wheat-A. cristatum derivatives have been obtained in our laboratory. In this study, a wheat-A. cristatum derivative II-3-1 was obtained, which was proven to contain a 1P (1A) disomic substitution and 2P disomic addition line with 40 wheat chromosomes and two pairs of A. cristatum chromosomes by genomic in situ hybridization (GISH) and molecular markers analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28337069/detection-of-alien-genetic-introgressions-in-bread-wheat-using-dot-blot-genomic-hybridisation
#10
María-Dolores Rey, Pilar Prieto
Simple, reliable methods for the identification of alien genetic introgressions are required in plant breeding programmes. The use of genomic dot-blot hybridisation allows the detection of small Hordeum chilense genomic introgressions in the descendants of genetic crosses between wheat and H. chilense addition or substitution lines in wheat when molecular markers are difficult to use. Based on genomic in situ hybridisation, DNA samples from wheat lines carrying putatively H. chilense introgressions were immobilised on a membrane, blocked with wheat genomic DNA and hybridised with biotin-labelled H...
2017: Molecular Breeding: New Strategies in Plant Improvement
https://www.readbyqxmd.com/read/28278169/molecular-cytogenetic-fish-and-genome-analysis-of-diploid-wheatgrasses-and-their-phylogenetic-relationship
#11
Gabriella Linc, Eszter Gaál, István Molnár, Diana Icsó, Ekaterina Badaeva, Márta Molnár-Láng
This paper reports detailed FISH-based karyotypes for three diploid wheatgrass species Agropyron cristatum (L.) Beauv., Thinopyrum bessarabicum (Savul.&Rayss) A. Löve, Pseudoroegneria spicata (Pursh) A. Löve, the supposed ancestors of hexaploid Thinopyrum intermedium (Host) Barkworth & D.R.Dewey, compiled using DNA repeats and comparative genome analysis based on COS markers. Fluorescence in situ hybridization (FISH) with repetitive DNA probes proved suitable for the identification of individual chromosomes in the diploid JJ, StSt and PP genomes...
2017: PloS One
https://www.readbyqxmd.com/read/28171833/assessing-chilling-and-drought-tolerance-of-different-plant-genera-on-extensive-green-roofs-in-an-arid-climate-region-in-iran
#12
Navid Vahdati, Ali Tehranifar, Fatemeh Kazemi
The harsh and stressful growing environment of extensive green roofs especially in arid environments allows a limited range of plant species to survive. Therefore, achieving plantings to survive in such conditions is a significant challenge. This paper describes an experiment investigating plant selections for extensive green roofs based on chilling (cold season) and drought (warm season) conditions of Iran. Nine species were selected from the three major taxonomic and functional plant groups that are commonly used on extensive green roofs including grasses, groundcovers and sedums...
May 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28040531/traditionally-used-medicinal-plants-against-uncomplicated-urinary-tract-infections-hexadecyl-coumaric-acid-ester-from-the-rhizomes-of-agropyron-repens-l-p-beauv-with-antiadhesive-activity-against-uropathogenic-e-coli
#13
Shabnam Sarshar Beydokthi, Jandirk Sendker, Simone Brandt, Andreas Hensel
The rhizomes from Agropyron repens are traditionally used for the treatment of uncomplicated urinary tract infections. Extracts prepared with solvents of different polarity did not show any cytotoxic effects against different strains of uropathogenic E. coli (UPEC) and human T24 bladder cells under in vitro conditions. Significant antiadhesive activity against the bacterial attachment to human T24 bladder cells was found for an acetone extract (AAE) at concentrations >250μg/mL. More hydrophilic extracts did not influence the bacterial attachment to the eukaryotic host cells...
March 2017: Fitoterapia
https://www.readbyqxmd.com/read/27832372/isolation-and-application-of-p-genome-specific-dna-sequences-of-agropyron-gaertn-in-triticeae
#14
Haiming Han, Weihua Liu, Yuqing Lu, Jinpeng Zhang, Xinming Yang, Xiuquan Li, Zanmin Hu, Lihui Li
Different types of P genome sequences and markers were developed, which could be used to analyze the evolution of P genome in Triticeae and identify precisely wheat- A. cristatum introgression lines. P genome of Agropyron Gaertn. plays an important role in Triticeae and could provide many desirable genes conferring high yield, disease resistance, and stress tolerance for wheat genetic improvement. Therefore, it is significant to develop specific sequences and functional markers of P genome. In this study, 126 sequences were isolated from the degenerate oligonucleotide primed-polymerase chain reaction (DOP-PCR) products of microdissected chromosome 6PS...
February 2017: Planta
https://www.readbyqxmd.com/read/27824906/chromosomal-localization-of-genes-conferring-desirable-agronomic-traits-from-wheat-agropyron-cristatum-disomic-addition-line-5113
#15
Qingfeng Li, Yuqing Lu, Cuili Pan, Miaomiao Yao, Jinpeng Zhang, Xinming Yang, Weihua Liu, Xiuquan Li, Yajun Xi, Lihui Li
Creation of wheat-alien disomic addition lines and localization of desirable genes on alien chromosomes are important for utilization of these genes in genetic improvement of common wheat. In this study, wheat-Agropyron cristatum derivative line 5113 was characterized by genomic in situ hybridization (GISH) and specific-locus amplified fragment sequencing (SLAF-seq), and was demonstrated to be a novel wheat-A. cristatum disomic 6P addition line. Compared with its parent Fukuhokomugi (Fukuho), 5113 displayed multiple elite agronomic traits, including higher uppermost internode/plant height ratio, larger flag leaf, longer spike length, elevated grain number per spike and spikelet number per spike, more kernel number in the middle spikelet, more fertile tiller number per plant, and enhanced resistance to powdery mildew and leaf rust...
2016: PloS One
https://www.readbyqxmd.com/read/27771744/mapping-of-novel-powdery-mildew-resistance-gene-s-from-agropyron-cristatum-chromosome-2p
#16
Huanhuan Li, Bo Jiang, Jingchang Wang, Yuqing Lu, Jinpeng Zhang, Cuili Pan, Xinming Yang, Xiuquan Li, Weihua Liu, Lihui Li
A physical map of Agropyron cristatum 2P chromosome was constructed for the first time and the novel powdery mildew resistance gene(s) from chromosome 2P was(were) also mapped. Agropyron cristatum (L.) Gaertn. (2n = 28, PPPP), a wild relative of common wheat, is highly resistant to powdery mildew. Previous studies showed that wheat-A. cristatum 2P disomic addition line II-9-3 displayed high resistance to powdery mildew, and the resistance was attributable to A. cristatum chromosome 2P. To utilize and physically map the powdery mildew resistance gene(s), 15 wheat-A...
January 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27643577/cytological-and-molecular-analysis-of-wheat-agropyron-cristatum-translocation-lines-with-6p-chromosome-fragments-conferring-superior-agronomic-traits-in-common-wheat
#17
Liqiang Song, Yuqing Lu, Jinpeng Zhang, Cuili Pan, Xinming Yang, Xiuquan Li, Weihua Liu, Lihui Li
Agropyron cristatum (2n = 4x = 28, PPPP) is a wild relative of common wheat and confers several desirable agronomic traits to wheat, such as high grain number per spike and enhanced resistance to certain diseases. Development of wheat - A. cristatum 6P translocation lines facilitates its utilization in wheat improvement. In this study, 26 wheat - A. cristatum 6P translocation lines were characterized by in situ hybridization (ISH) and 6P-specific sequence-tagged-site (STS) markers. These translocation lines carried different 6P chromosomal segments, which covered the whole 6P chromosome...
October 2016: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/27551349/simultaneous-visualization-of-different-genomes-j-jst-and-st-in-a-thinopyrum-intermedium-%C3%A3-thinopyrum-ponticum-synthetic-hybrid-poaceae-and-in-its-parental-species-by-multicolour-genomic-in-situ-hybridization-mcgish
#18
Klaudia Kruppa, Márta Molnár-Láng
Multicolour genomic in situ hybridization (mcGISH) using total genomic DNA probes from Thinopyrum bessarabicum (Săvulescu & Rayss, 1923) Á. Löve, 1984 (genome J(b) or E(b), 2n = 14), and Pseudoroegneria spicata (Pursh, 1814) Á. Löve, 1980 (genome St, 2n = 14) was used to characterize the mitotic metaphase chromosomes of a synthetic hybrid of Thinopyrum intermedium (Host, 1805) Barkworth & D.R. Dewey, 1985 and Thinopyrum ponticum (Podpěra, 1902) Z.-W. Liu et R.-C.Wang, 1993 named "Agropyron glael" and produced by N...
2016: Comparative Cytogenetics
https://www.readbyqxmd.com/read/27459347/transferring-desirable-genes-from-agropyron-cristatum-7p-chromosome-into-common-wheat
#19
Mingjie Lu, Yuqing Lu, Huanhuan Li, Cuili Pan, Yong Guo, Jinpeng Zhang, Xinming Yang, Xiuquan Li, Weihua Liu, Lihui Li
Wheat-Agropyron cristatum 7P disomic addition line Ⅱ-5-1, derived from the distant hybridization between A. cristatum (2n = 4x = 28, PPPP) and the common wheat cv. Fukuhokomugi (Fukuho), displays numerous desirable agronomic traits, including enhanced thousand-grain weight, smaller flag leaf, and enhanced tolerance to drought. In order to transfer these traits into common wheat, Ⅱ-5-1 was induced by 60Co-γ ray, leading to the creation of 18 translocation lines and three deletion lines. Genomic in situ hybridization (GISH) and fluorescence in situ hybridization (FISH) indicated that multiple wheat chromosomes were involved in the translocation events, including chromosome 2A, 3A, 5A, 7A, 3B, 5B, 7B, 3D and 7D...
2016: PloS One
https://www.readbyqxmd.com/read/27246315/an-intercalary-translocation-from-agropyron-cristatum-6p-chromosome-into-common-wheat-confers-enhanced-kernel-number-per-spike
#20
Jing Zhang, Jinpeng Zhang, Weihua Liu, Xiaoyang Wu, Xinming Yang, Xiuquan Li, Yuqing Lu, Lihui Li
This study explored 6P chromosomal translocations in wheat, and determined the effects of 6P intercalary chromosome segments on kernel number per wheat spike. Exploiting and utilising gene(s) from wild relative species has become an essential strategy for wheat crop improvement. In the translocation line Pubing2978, the intercalary 6P chromosome segment from Agropyron cristatum (L.) Gaertn. (2n = 4x = 28, PPPP) carried valuable multi-kernel gene(s) and was selected from the offspring of the common wheat plant Fukuho and the irradiated wheat-A...
October 2016: Planta
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