TAG. Theoretical and Applied Genetics This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

High-resolution mapping of Ryd4 < sup > Hb < /sup > , a major resistance gene to Barley yellow dwarf virus from Hordeum bulbosum
Theor Appl Genet. 2024 Feb 27;137(3):60. doi: 10.1007/s00122-024-04542-y.ABSTRACTWe mapped Ryd4Hb in a 66.5 kbp interval in barley and dissociated it from a sublethality factor. These results will enable a targeted selection of the resistance in barley breeding. Virus diseases are causing high yield losses in crops worldwide. The Barley yellow dwarf virus (BYDV) complex is responsible for one of the most widespread and economically important viral diseases of cereals. While no gene conferring complete resistance (immunity) has been uncovered in the primary gene pool of barley, sources of resistance were searched and identi...
Source: TAG. Theoretical and Applied Genetics - February 27, 2024 Category: Genetics & Stem Cells Authors: H élène Pidon Brigitte Ruge-Wehling Torsten Will Antje Habeku ß Neele Wendler Klaus Oldach Anja Maasberg-Prelle Viktor Korzun Nils Stein Source Type: research

Detection of two homologous major QTLs and development of diagnostic molecular markers for sucrose content in peanut
In this study, a high-density genetic map was constructed based on whole-genome re-sequencing data from a peanut RIL population. This map consisted of 2,042 bins and 24,142 SNP markers, making it one of the most comprehensive maps to date in terms of marker density. Two major QTLs (qSCA06.2 and qSCB06.2) were identified, explaining 31.41% and 24.13% of the phenotypic variance, respectively. Notably, these two QTLs were located in homologous genomic regions between the A and B subgenomes. The elite allele of qSCA06.2 was exclusive to Valencia-type, while the elite allele of qSCB06.2 existed in other peanut types. Importantl...
Source: TAG. Theoretical and Applied Genetics - February 27, 2024 Category: Genetics & Stem Cells Authors: Zhihui Wang Yue Zhang Dongxin Huai Yuning Chen Xin Wang Yanping Kang Liying Yan Huifang Jiang Kede Liu Yong Lei Boshou Liao Source Type: research

Aspartyl proteases identified as candidate genes of a fiber length QTL, qFL < sub > D05 < /sub > , that regulates fiber length in cotton (Gossypium hirsutum L.)
In this study, an FL QTL (qFLD05) was fine-mapped to a 216.9-kb interval using a secondary F2:3 population derived from the upland hybrid cultivar Ji1518. This mapped genomic segment included 15 coding genes, four of which were annotated as aspartyl proteases (GhAP1-GhAP4). GhAPs were identified as candidates for qFLD05 as the sequence variations in GhAPs were associated with FL deviations in the mapping population, and functional validation of GhAP3 and GhAP4 indicated a longer FL following decreases in their expression levels through virus-induced gene silencing (VIGS). Subsequently, the potential involvement of GhWRKY40...
Source: TAG. Theoretical and Applied Genetics - February 26, 2024 Category: Genetics & Stem Cells Authors: Sujun Zhang Haitao Wang Xinghe Li Liyuan Tang Xiao Cai Cunjing Liu Xiangyun Zhang Jianhong Zhang Source Type: research

Genome-wide association studies reveal novel loci for grain size in two-rowed barley (Hordeum vulgare L.)
In this study, a collection of 334 worldwide two-rowed barley accessions with extensive genetic diversity was evaluated for grain size including grain length (GL), grain width (GW), and thousand-grain weight (TGW) across six independent field trials. Significant differences were observed in genotype and environments for all measured traits. SNP- and InDel-based GWAS were applied to dissect the genetic architecture of grain size with an SLAF-seq strategy. Two approaches using the FarmCPU model revealed 38 significant marker-trait associations (MTAs) with PVE ranging from 0.01% to 20.68%. Among these MTAs, five were on genom...
Source: TAG. Theoretical and Applied Genetics - February 26, 2024 Category: Genetics & Stem Cells Authors: Yi Hong Mengna Zhang Juan Zhu Yuhang Zhang Chao Lv Baojian Guo Feifei Wang Rugen Xu Source Type: research

Identification of genetic loci and candidate genes underlying freezing tolerance in wheat seedlings
Theor Appl Genet. 2024 Feb 24;137(3):57. doi: 10.1007/s00122-024-04564-6.ABSTRACTTen stable loci for freezing tolerance (FT) in wheat were detected by genome-wide association analysis. The putative candidate gene TaRPM1-7BL underlying the major locus QFT.ahau-7B.2 was identified and validated. Frost damage restricts wheat growth, development, and geographical distribution. However, the genetic mechanism of freezing tolerance (FT) remains unclear. Here, we evaluated FT phenotypes of 245 wheat varieties and lines, and genotyped them using a Wheat 90 K array. The association analysis showed that ten stable loci were significa...
Source: TAG. Theoretical and Applied Genetics - February 24, 2024 Category: Genetics & Stem Cells Authors: Xu Pan Xianlai Nie Wei Gao Shengnan Yan Hansheng Feng Jiajia Cao Jie Lu Hui Shao Chuanxi Ma Cheng Chang Haiping Zhang Source Type: research

Identification and molecular mapping of a major gene conferring resistance to Phytophthora sansomeana in soybean 'Colfax'
In this study, we crossed 'Colfax' with a susceptible parent, 'Senaki', and developed three mapping populations with a total of 234 F2:3 families. Inheritance pattern analysis indicated a 1:2:1 ratio for resistant: segregating: susceptible lines among all the three populations, indicating a single dominant gene conferring the resistance in 'Colfax' (designated as Rpsan1). Linkage analysis using extreme phenotypes anchored Rpsan1 to a 30 Mb region on chromosome 3. By selecting nine polymorphic SNP markers within the region, Rpsan1 was genetically delimited into a 21.3 cM region between Gm03_4487138_A_C and Gm03_5451606_A_C,...
Source: TAG. Theoretical and Applied Genetics - February 22, 2024 Category: Genetics & Stem Cells Authors: Feng Lin Muhammad Salman Zhanguo Zhang Austin G McCoy Wenlong Li Raju Thada Magar Drew Mitchell Meixia Zhao Cuihua Gu Martin I Chilvers Dechun Wang Source Type: research

Development and characterization of a new sunflower source of resistance to race G of Orobanche cumana Wallr. derived from Helianthus anomalus
In this study, we report the identification, introgression, and genetic and physiological characterization of a new sunflower source of resistance to race G of broomrape developed from the wild annual sunflower H. anomalus (accession PI 468642). Crosses between PI 468642 and the susceptible line P21 were carried out, and the genetic study was conducted in BC1F1, BC1F2, and its derived BC1F3 populations. A BC1F5 germplasm named ANOM1 was developed through selection for race G resistance and resemblance to cultivated sunflower. The resistant trait showed monogenic and dominant inheritance. The gene, named OrAnom1, was mapped...
Source: TAG. Theoretical and Applied Genetics - February 22, 2024 Category: Genetics & Stem Cells Authors: Bel én Fernández-Melero Lidia Del Moral Marco Todesco Loren H Rieseberg Gregory L Owens S ébastien Carrère Mireille Chabaud St éphane Muños Leonardo Velasco Bego ña Pérez-Vich Source Type: research