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Genomics in Aquaculture to Better Understand Species Biology and Accelerate Genetic Progress

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889199570 Year: Pages: 151 DOI: 10.3389/978-2-88919-957-0 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Genetics
Added to DOAB on : 2016-01-19 14:05:46
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Abstract

From a global perspective aquaculture is an activity related to food production with large potential for growth. Considering a continuously growing population, the efficiency and sustainability of this activity will be crucial to meet the needs of protein for human consumption in the near future. However, for continuous enhancement of the culture of both fish and shellfish there are still challenges to overcome, mostly related to the biology of the cultured species and their interaction with (increasingly changing) environmental factors. Examples of these challenges include early sexual maturation, feed meal replacement, immune response to infectious diseases and parasites, and temperature and salinity tolerance. Moreover, it is estimated that less than 10% of the total aquaculture production in the world is based on populations genetically improved by means of artificial selection. Thus, there is considerable room for implementing breeding schemes aimed at improving productive traits having significant economic impact. By far the most economically relevant trait is growth rate, which can be efficiently improved by conventional genetic selection (i.e. based on breeding values of selection candidates). However, there are other important traits that cannot be measured directly on selection candidates, such as resistance against infectious and parasitic agents and carcass quality traits (e.g. fillet yield and meat color). However, these traits can be more efficiently improved using molecular tools to assist breeding programs by means of marker-assisted selection, using a few markers explaining a high proportion of the trait variation, or genomic selection, using thousands of markers to estimate genomic breeding values. The development and implementation of new technologies applied to molecular biology and genomics, such as next-generation sequencing methods and high-throughput genotyping platforms, are allowing the rapid increase of availability of genomic resources in aquaculture species. These resources will provide powerful tools to the research community and will aid in the determination of the genetic factors involved in several biological aspects of aquaculture species. In this regard, it is important to establish discussion in terms of which strategies will be more efficient to solve the primary challenges that are affecting aquaculture systems around the world. The main objective of this Research Topic is to provide a forum to communicate recent research and implementation strategies in the use of genomics in aquaculture species with emphasis on (1) a better understanding of fish and shellfish biological processes having considerable impact on aquaculture systems; and (2) the efficient incorporation of molecular information into breeding programs to accelerate genetic progress of economically relevant traits.

Molecular Genetics, Genomics and Biotechnology of Crop Plants Breeding

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ISBN: 9783039288779 / 9783039288786 Year: Pages: 238 DOI: 10.3390/books978-3-03928-878-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Plant Sciences
Added to DOAB on : 2020-06-09 16:38:57
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This Special Issue on molecular genetics, genomics, and biotechnology in crop plant breeding seeks to encourage the use of the tools currently available. It features nine research papers that address quality traits, grain yield, and mutations by exploring cytoplasmic male sterility, the delicate control of flowering in rice, the removal of anti-nutritional factors, the use and development of new technologies for non-model species marker technology, site-directed mutagenesis and GMO regulation, genomics selection and genome-wide association studies, how to cope with abiotic stress, and an exploration of fruit trees adapted to harsh environments for breeding purposes. A further four papers review the genetics of pre-harvest spouting, readiness for climate-smart crop development, genomic selection in the breeding of cereal crops, and the large numbers of mutants in straw lignin biosynthesis and deposition.

Keywords

phloem metabolites --- electrospray ionisation --- mass spectrometry --- cultivar --- quality groups --- nitrogen --- faba bean --- zt-1 --- linkage map --- SSR --- ISSR --- Brassica napus --- GmDof4 --- GmDof11 --- oleic acid --- fatty acid composition --- differentially expressed genes --- drought --- RNA-seq --- RNA editing --- wheat --- climate change --- mapping populations --- genetic resources --- mutation breeding --- genome editing --- new plant breeding techniques --- “omics” data --- bioinformatics --- rice --- CRISPR/Cas9 --- Wx --- TGW6 --- mutations --- maintainer --- cytoplasmic male sterile --- amylose content --- anther --- protein --- cytoplasmic male sterility --- fertility restoration --- sunflower --- Rf1 gene --- GWAS --- Pentatricopeptide Repeats --- PPR genes --- association mapping --- candidate genes --- gene mapping --- lodicule --- non-open hull 1(noh1) --- rice --- crops --- quantitative genetics --- estimated breeding value --- genomic prediction --- plant breeding --- breeding scheme --- pedigree --- genetic value --- wheat --- pre-harvest sprouting --- seed dormancy --- abscisic acid --- gibberellin --- QTL/genes --- brown midrib --- cell wall --- gold hull and internode --- grass family --- lignin --- monolignol pathway --- mutational breeding --- orange lemma --- transgenic cereals --- SNP --- SSR --- next generation sequencing --- genotyping by sequencing --- Japanese plum --- SSR --- diversity --- genetic structure --- candidate genes --- genomic selection --- mutants --- ddRAD sequencing --- genotyping-by-sequencing --- CRISPR/Cas9 site directed mutagenesis --- genome-wide association scan --- genetic modification --- F1 hybrids --- QTL

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