scholarly journals High-Density Genetic Linkage Maps Provide Novel Insights Into ZW/ZZ Sex Determination System and Growth Performance in Mud Crab (Scylla paramamosain)

2019 ◽  
Vol 10 ◽  
Author(s):  
Khor Waiho ◽  
Xi Shi ◽  
Hanafiah Fazhan ◽  
Shengkang Li ◽  
Yueling Zhang ◽  
...  
BMC Genetics ◽  
2013 ◽  
Vol 14 (1) ◽  
pp. 113 ◽  
Author(s):  
Xinxin You ◽  
Liping Shu ◽  
Shuisheng Li ◽  
Jieming Chen ◽  
Jian Luo ◽  
...  

2013 ◽  
Vol 40 (2) ◽  
pp. 95-106 ◽  
Author(s):  
Baozhu Guo ◽  
Manish K. Pandey ◽  
Guohao He ◽  
Xinyou Zhang ◽  
Boshou Liao ◽  
...  

ABSTRACT The competitiveness of peanuts in domestic and global markets has been threatened by losses in productivity and quality that are attributed to diseases, pests, environmental stresses and allergy or food safety issues. Narrow genetic diversity and a deficiency of polymorphic DNA markers severely hindered construction of dense genetic maps and quantitative trait loci (QTL) mapping in order to deploy linked markers in marker-assisted peanut improvement. The U.S. Peanut Genome Initiative (PGI) was launched in 2004, and expanded to a global effort in 2006 to address these issues through coordination of international efforts in genome research beginning with molecular marker development and improvement of map resolution and coverage. Ultimately, a peanut genome sequencing project was launched in 2012 by the Peanut Genome Consortium (PGC). We reviewed the progress for accelerated development of peanut genomic resources in peanut, such as generation of expressed sequenced tags (ESTs) (252,832 ESTs as December 2012 in the public NCBI EST database), development of molecular markers (over 15,518 SSRs), and construction of peanut genetic linkage maps, in particular for cultivated peanut. Several consensus genetic maps have been constructed, and there are examples of recent international efforts to develop high density maps. An international reference consensus genetic map was developed recently with 897 marker loci based on 11 published mapping populations. Furthermore, a high-density integrated consensus map of cultivated peanut and wild diploid relatives also has been developed, which was enriched further with 3693 marker loci on a single map by adding information from five new genetic mapping populations to the published reference consensus map.


Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1048
Author(s):  
Daniela Torello Marinoni ◽  
Sogo Nishio ◽  
Nadia Valentini ◽  
Kenta Shirasawa ◽  
Alberto Acquadro ◽  
...  

Castanea sativa is an important multipurpose species in Europe for nut and timber production as well as for its role in the landscape and in the forest ecosystem. This species has low tolerance to chestnut gall wasp (Dryocosmus kuriphilus Yasumatsu), which is a pest that was accidentally introduced into Europe in early 2000 and devastated forest and orchard trees. Resistance to the gall wasp was found in the hybrid cultivar ‘Bouche de Bétizac’ (C. sativa × C. crenata) and studied by developing genetic linkage maps using a population derived from a cross between ‘Bouche de Bétizac’ and the susceptible cultivar ‘Madonna’ (C. sativa). The high-density genetic maps were constructed using double-digest restriction site-associated DNA-seq and simple sequence repeat markers. The map of ‘Bouche de Bétizac’ consisted of 1459 loci and spanned 809.6 cM; the map of ‘Madonna’ consisted of 1089 loci and spanned 753.3 cM. In both maps, 12 linkage groups were identified. A single major QTL was recognized on the ‘Bouche de Bétizac’ map, explaining up to 67–69% of the phenotypic variance of the resistance trait (Rdk1). The Rdk1 quantitative trait loci (QTL) region included 11 scaffolds and two candidate genes putatively involved in the resistance response were identified. This study will contribute to C. sativa breeding programs and to the study of Rdk1 genes.


Aquaculture ◽  
2018 ◽  
Vol 482 ◽  
pp. 90-95 ◽  
Author(s):  
Guoqing Zhang ◽  
Xinhui Zhang ◽  
Hengzhen Ye ◽  
Shoujia Jiang ◽  
Hui Yu ◽  
...  

2011 ◽  
Vol 8 (1) ◽  
pp. 163-175 ◽  
Author(s):  
Anand Raj Kumar Kullan ◽  
Maria M. van Dyk ◽  
Nicoletta Jones ◽  
Arnulf Kanzler ◽  
Arlene Bayley ◽  
...  

Horticulturae ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 25
Author(s):  
Xingbo Wu ◽  
Amanda M. Hulse-Kemp ◽  
Phillip A. Wadl ◽  
Zach Smith ◽  
Keithanne Mockaitis ◽  
...  

Hydrangea (Hydrangea macrophylla) is an important ornamental crop that has been cultivated for more than 300 years. Despite the economic importance, genetic studies for hydrangea have been limited by the lack of genetic resources. Genetic linkage maps and subsequent trait mapping are essential tools to identify and make markers available for marker-assisted breeding. A transcriptomic study was performed on two important cultivars, Veitchii and Endless Summer, to discover simple sequence repeat (SSR) markers and an F1 population based on the cross ‘Veitchii’ × ‘Endless Summer’ was established for genetic linkage map construction. Genotyping by sequencing (GBS) was performed on the mapping population along with SSR genotyping. From an analysis of 42,682 putative transcripts, 8780 SSRs were identified and 1535 were validated in the mapping parents. A total of 267 polymorphic SSRs were selected for linkage map construction. The GBS yielded 3923 high quality single nucleotide polymorphisms (SNPs) in the mapping population, resulting in a total of 4190 markers that were used to generate maps for each parent and a consensus map. The consensus linkage map contained 1767 positioned markers (146 SSRs and 1621 SNPs), spanned 1383.4 centiMorgans (cM), and was comprised of 18 linkage groups, with an average mapping interval of 0.8 cM. The transcriptome information and large-scale marker development in this study greatly expanded the genetic resources that are available for hydrangea. The high-density genetic linkage maps presented here will serve as an important foundation for quantitative trait loci mapping, map-based gene cloning, and marker-assisted selection of H. macrophylla.


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