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TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik

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https://www.readbyqxmd.com/read/30607439/a-myb-transcription-factor-is-a-candidate-to-control-pungency-in-capsicum-annuum
#1
Koeun Han, Siyoung Jang, Joung-Ho Lee, Do-Gyeong Lee, Jin-Kyung Kwon, Byoung-Cheorl Kang
Identification of a novel pungency-controlling gene Pun3, which acts as a master regulator of capsaicinoid biosynthetic genes in Capsicum annuum. Capsaicinoid is a unique compound that gives hot peppers (Capsicum spp.) their spicy taste. The Pun1 and Pun2 loci are known to control pungency in Capsicum species. Whereas Pun1 encodes an acyltransferase, the identity of Pun2 is currently unknown. Here, we used recombinant inbred lines and F2 plants derived from a cross between the non-pungent C. annuum accession 'YCM334' and the pungent C...
January 3, 2019: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30607438/genetic-dissection-of-domestication-related-traits-in-soybean-through-genotyping-by-sequencing-of-two-interspecific-mapping-populations
#2
Stephen A Swarm, Lianjun Sun, Xutong Wang, Weidong Wang, Patrick J Brown, Jianxin Ma, Randall L Nelson
A total of 132 domestication-related QTLs, of which 41 were novel, were identified through genotyping-by-sequencing of two Glycine max × Glycine soja populations. Soybean [Glycine max (L.) Merr.] was domesticated in East Asia from the wild progenitor Glycine soja. The domestication process led to many distinct morphological changes that adapt it to cultivation. These include larger seeds, erect growth, larger stem diameter, reduced pod shattering, and altered growth habit. The objective of this study was to identify QTLs controlling key domestication-related traits (DRTs) using interspecific mapping populations...
January 3, 2019: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30588539/genetic-diversity-patterns-and-domestication-origin-of-soybean
#3
Soon-Chun Jeong, Jung-Kyung Moon, Soo-Kwon Park, Myung-Shin Kim, Kwanghee Lee, Soo Rang Lee, Namhee Jeong, Man Soo Choi, Namshin Kim, Sung-Taeg Kang, Euiho Park
Genotyping data of a comprehensive Korean soybean collection obtained using a large SNP array were used to clarify global distribution patterns of soybean and address the evolutionary history of soybean. Understanding diversity and evolution of a crop is an essential step to implement a strategy to expand its germplasm base for crop improvement research. Accessions intensively collected from Korea, which is a small but central region in the distribution geography of soybean, were genotyped to provide sufficient data to underpin population genetic questions...
December 26, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30578434/comparisons-of-molecular-diversity-indices-selective-sweeps-and-population-structure-of-african-rice-with-its-wild-progenitor-and-asian-rice
#4
Marie Noelle Ndjiondjop, Nikolaos Alachiotis, Pavlos Pavlidis, Alphonse Goungoulou, Sèdjro Bienvenu Kpeki, Dule Zhao, Kassa Semagn
The extent of molecular diversity parameters across three rice species was compared using large germplasm collection genotyped with genomewide SNPs and SNPs that fell within selective sweep regions. Previous studies conducted on limited number of accessions have reported very low genetic variation in African rice (Oryza glaberrima Steud.) as compared to its wild progenitor (O. barthii A. Chev.) and to Asian rice (O. sativa L.). Here, we characterized a large collection of African rice and compared its molecular diversity indices and population structure with the two other species using genomewide single nucleotide polymorphisms (SNPs) and SNPs that mapped within selective sweeps...
December 21, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30569367/identification-of-co-located-qtls-and-genomic-regions-affecting-grapevine-cluster-architecture
#5
Robert Richter, Doreen Gabriel, Florian Rist, Reinhard Töpfer, Eva Zyprian
Loose cluster architecture is an important aim in grapevine breeding since it has high impact on the phytosanitary status of grapes. This investigation analyzed the contributions of individual cluster sub-traits to the overall trait of cluster architecture. Six sub-traits showed large impact on cluster architecture as major determinants. They explained 57% of the OIV204 descriptor for cluster compactness rating in a highly diverse cross-population of 149 genotypes. Genetic analysis revealed several genomic regions involved in the expression of this trait...
December 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30569366/state-of-the-art-and-novel-developments-of-in-vivo-haploid-technologies
#6
Kamila Kalinowska, Sindy Chamas, Katharina Unkel, Dmitri Demidov, Inna Lermontova, Thomas Dresselhaus, Jochen Kumlehn, Frank Dunemann, Andreas Houben
The ability to generate (doubled) haploid plants significantly accelerates the crop breeding process. Haploids have been induced mainly through the generation of plants from cultivated gametophic (haploid) cells and tissues, i.e., in vitro haploid technologies, or through the selective loss of a parental chromosome set upon inter- or intraspecific hybridization. Here, we focus our review on the mechanisms responsible for the in vivo formation of haploids in the context of inter- and intraspecific hybridization...
December 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30569365/accelerating-crop-genetic-gains-with-genomic-selection
#7
REVIEW
Kai Peter Voss-Fels, Mark Cooper, Ben John Hayes
Genomic prediction based on additive genetic effects can accelerate genetic gain. There are opportunities for further improvement by including non-additive effects that access untapped sources of genetic diversity. Several studies have reported a worrying gap between the projected global future demand for plant-based products and the current annual rates of production increase, indicating that enhancing the rate of genetic gain might be critical for future food security. Therefore, new breeding technologies and strategies are required to significantly boost genetic improvement of future crop cultivars...
December 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30564908/farca1-a-major-subgenome-specific-locus-conferring-resistance-to-colletotrichum-acutatum-in-strawberry
#8
Natalia Salinas, Sujeet Verma, Natalia Peres, Vance M Whitaker
Optimal strategies for genetic improvement in crops depend on accurate assessments of the genetic architecture of traits. The overall objective of the present study was to determine the genetic architecture of anthracnose fruit rot (AFR) resistance caused by the fungus Colletotrichum acutatum in the University of Florida strawberry (Fragaria × ananassa) breeding germplasm. In 2016-2017, 33 full-sib families resulting from crosses between parents with varying levels of AFR resistance were tested. In 2017-2018, six full-sib families resulting from putative heterozygous resistant parents and homozygous susceptible parents were tested...
December 18, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30560465/back-to-the-future-revisiting-mas-as-a-tool-for-modern-plant-breeding
#9
REVIEW
Joshua N Cobb, Partha S Biswas, J Damien Platten
New models for integration of major gene MAS with modern breeding approaches stand to greatly enhance the reliability and efficiency of breeding, facilitating the leveraging of traditional genetic diversity. Genetic diversity is well recognised as contributing essential variation to crop breeding processes, and marker-assisted selection is cited as the primary tool to bring this diversity into breeding programs without the associated genetic drag from otherwise poor-quality genomes of donor varieties. However, implementation of marker-assisted selection techniques remains a challenge in many breeding programs worldwide...
December 17, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30560464/toward-the-sequence-based-breeding-in-legumes-in-the-post-genome-sequencing-era
#10
Rajeev K Varshney, Manish K Pandey, Abhishek Bohra, Vikas K Singh, Mahendar Thudi, Rachit K Saxena
Efficiency of breeding programs of legume crops such as chickpea, pigeonpea and groundnut has been considerably improved over the past decade through deployment of modern genomic tools and technologies. For instance, next-generation sequencing technologies have facilitated availability of genome sequence assemblies, re-sequencing of several hundred lines, development of HapMaps, high-density genetic maps, a range of marker genotyping platforms and identification of markers associated with a number of agronomic traits in these legume crops...
December 17, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30552455/accuracy-of-within-and-among-family-genomic-prediction-for-fusarium-head-blight-and-septoria-tritici-blotch-in-winter-wheat
#11
Cathérine Pauline Herter, Erhard Ebmeyer, Sonja Kollers, Viktor Korzun, Tobias Würschum, Thomas Miedaner
Genomic selection is an approach that uses whole-genome marker data to predict breeding values of genotypes and holds the potential to improve the genetic gain in breeding programs. In this study, two winter wheat populations (DS1 and DS2) consisting of 438 and 585 lines derived from six and eight bi-parental families, respectively, were genotyped with genome-wide single nucleotide polymorphism markers and phenotyped for Fusarium head blight and Septoria tritici blotch severity, plant height and heading date...
December 14, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30547185/breaking-the-curse-of-dimensionality-to-identify-causal-variants-in-breeding-4
#12
REVIEW
Guillaume P Ramstein, Sarah E Jensen, Edward S Buckler
In the past, plant breeding has undergone three major transformations and is currently transitioning to a new technological phase, Breeding 4. This phase is characterized by the development of methods for biological design of plant varieties, including transformation and gene editing techniques directed toward causal loci. The application of such technologies will require to reliably estimate the effect of loci in plant genomes by avoiding the situation where the number of loci assayed (p) surpasses the number of plant genotypes (n)...
December 13, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30547184/characterisation-of-barley-resistance-to-rhynchosporium-on-chromosome-6hs
#13
Max Coulter, Bianca Büttner, Kerstin Hofmann, Micha Bayer, Luke Ramsay, Günther Schweizer, Robbie Waugh, Mark E Looseley, Anna Avrova
Major resistance gene to rhynchosporium, Rrs18, maps close to the telomere on the short arm of chromosome 6H in barley. Rhynchosporium or barley scald caused by a fungal pathogen Rhynchosporium commune is one of the most destructive and economically important diseases of barley in the world. Testing of Steptoe × Morex and CIho 3515 × Alexis doubled haploid populations has revealed a large effect QTL for resistance to R. commune close to the telomere on the short arm of chromosome 6H, present in both populations...
December 13, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30542776/characterization-of-pm63-a-powdery-mildew-resistance-gene-in-iranian-landrace-pi-628024
#14
Chengcheng Tan, Genqiao Li, Christina Cowger, Brett F Carver, Xiangyang Xu
A new powdery mildew resistance gene conferring a wide spectrum of resistance to Bgt isolates in the USA, Pm63 , was identified in Iranian wheat landrace PI 628024 and mapped to the terminal region of the long arm of chromosome 2B. Powdery mildew is a globally important wheat disease causing severe yield losses, and host resistance is the preferred strategy for managing this disease. The objective of this study was to characterize a powdery mildew resistance gene in Iranian landrace PI 628024, which exhibited a wide spectrum of resistance to representative Blumeria graminis f...
December 12, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30539317/genotyping-by-sequencing-based-genetic-mapping-reveals-large-number-of-epistatic-interactions-for-stem-rot-resistance-in-groundnut
#15
Sneha M Dodia, Binal Joshi, Sunil S Gangurde, Polavakkalipalayam P Thirumalaisamy, Gyan P Mishra, Dayama Narandrakumar, Pooja Soni, Arulthambi L Rathnakumar, Jentilal R Dobaria, Chandramohan Sangh, Annapurna Chitikineni, Sumitra V Chanda, Manish K Pandey, Rajeev K Varshney, Radhakrishnan Thankappan
Genetic mapping identified large number of epistatic interactions indicating the complex genetic architecture for stem rot disease resistance. Groundnut (Arachis hypogaea) is an important global crop commodity and serves as a major source of cooking oil, diverse confectionery preparations and livestock feed. Stem rot disease caused by Sclerotium rolfsii is the most devastating disease of groundnut and can cause up to 100% yield loss. Genomic-assisted breeding (GAB) has potential for accelerated development of stem rot resistance varieties in short period with more precision...
December 11, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30535634/genetic-analysis-of-cob-resistance-to-f-verticillioides-another-step-towards-the-protection-of-maize-from-ear-rot
#16
Cong Mu, Jingyang Gao, Zijian Zhou, Zhao Wang, Xiaodong Sun, Xuecai Zhang, Huafang Dong, Yanan Han, Xiaopeng Li, Yabin Wu, Yunxia Song, Peipei Ma, Chaopei Dong, Jiafa Chen, Jianyu Wu
We lay the foundation for further research on maize resistance to Fusarium verticillioides cob rot by identifying a candidate resistance gene. Fusarium verticillioides ear rot is the most common type of maize ear rot in the Huanghuaihai Plain of China. Ear rot resistance includes cob and kernel resistance. Most of the current literature concentrates on kernel resistance, and genetic studies on cob resistance are scarce. We aimed on identifying the QTLs responsible for F. verticillioides cob rot (FCR) resistance...
December 10, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30535509/introgression-reshapes-recombination-distribution-in-grapevine-interspecific-hybrids
#17
Marion Delame, Emilce Prado, Sophie Blanc, Guillaume Robert-Siegwald, Christophe Schneider, Pere Mestre, Camille Rustenholz, Didier Merdinoglu
In grapevine interspecific hybrids, meiotic recombination is suppressed in homeologous regions and enhanced in homologous regions of recombined chromosomes, whereas crossover rate remains unchanged when chromosome pairs are entirely homeologous. Vitis rotundifolia, an American species related to the cultivated European grapevine Vitis vinifera, has a high level of resistance to several grapevine major diseases and is consequently a valuable resource for grape breeding. However, crosses between both species most often lead to very few poorly fertile hybrids...
December 8, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30535647/mapping-resistance-to-phytophthora-root-rot-identifies-independent-loci-from-cultivated-cicer-arietinum-l-and-wild-cicer-echinospermum-p-h-davis-chickpea
#18
Amritha Amalraj, Julian Taylor, Sean Bithell, Yongle Li, Kevin Moore, Kristy Hobson, Tim Sutton
Major QTL for Phytophthora root rot resistance have been identified in three mapping populations with independent sources of resistance contributed by C. echinospermum and C. arietinum. Phytophthora root rot (PRR) caused by the oomycete Phytophthora medicaginis is a major soil-borne disease of chickpea in Australia. With no economic in-crop control of PRR, a genetic approach to improve resistance is the most practical management option. Moderate field resistance has been incorporated in the cultivated C. arietinum variety, Yorker, and a higher level of resistance has been identified in a derivative of wild chickpea (C...
December 7, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30535646/divergence-between-bread-wheat-and-triticum-militinae-in-the-powdery-mildew-resistance-qpm-tut-4a-locus-and-its-implications-for-cloning-of-the-resistance-gene
#19
Eva Janáková, Irena Jakobson, Hilma Peusha, Michael Abrouk, Monika Škopová, Hana Šimková, Jan Šafář, Jan Vrána, Jaroslav Doležel, Kadri Järve, Miroslav Valárik
A segment of Triticum militinae chromosome 7G harbors a gene(s) conferring powdery mildew resistance which is effective at both the seedling and the adult plant stages when transferred into bread wheat (T. aestivum). The introgressed segment replaces a piece of wheat chromosome arm 4AL. An analysis of segregating materials generated to positionally clone the gene highlighted that in a plant heterozygous for the introgression segment, only limited recombination occurs between the introgressed region and bread wheat 4A...
December 7, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30523354/zmaprg-an-uncharacterized-gene-enhances-acid-phosphatase-activity-and-pi-concentration-in-maize-leaf-during-phosphate-starvation
#20
Tingting Yu, Chaoxian Liu, Xuefeng Lu, Yang Bai, Lian Zhou, Yilin Cai
An uncharacterized gene, ZmAPRG, isolated by map-based cloning, enhances acid phosphatase activity and phosphate concentration in maize leaf during phosphate starvation. Acid phosphatase (APase) plays important roles in the absorption and utilization of phosphate (Pi) during maize growth. The information on genes regulating the acid phosphatase activity (APA) in maize leaves remains obscured. In a previous study, we delimited the quantitative trait locus, QTL-AP9 for APA to a region of about 546 kb. Here, we demonstrate that the GRMZM2G041022 located in the 546 kb region is a novel acid phosphatase-regulating gene (ZmAPRG)...
December 6, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
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