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Evolution, Composition and Regulation of Supernumerary B Chromosomes

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ISBN: 9783038977865 / 9783038977872 Year: Pages: 254 DOI: 10.3390/books978-3-03897-787-2 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-08-28 11:21:28
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Abstract

Supernumerary B chromosomes (Bs) are dispensable genetic elements found in thousands of species of plants and animals, and some fungi. Since their discovery more than a century ago, they have been a source of puzzlement, as they only occur in some members of a population and are absent from others. When they do occur, they are often harmful, and in the absence of “selfishness”, based on mechanisms of mitotic and meiotic drive, there appears to be no obvious reason for their existence. Cytogeneticists have long wrestled with questions about the biological existence of these enigmatic elements, including their lack of any adaptive properties, apparent absence of functional genes, their origin, sequence organization, and co-evolution as nuclear parasites. Emerging new technologies are now enabling researchers to step up a gear, to look enthusiastically beyond the previous limits of the horizon, and to uncover the secrets of these “silent” chromosomes. This book provides a comprehensive guide to theoretical advancements in the field of B chromosome research in both animal and plant systems.

Keywords

repetitive elements --- RNA-Seq --- genomics --- evolution --- cytogenetics --- supernumerary elements --- extra chromosomes --- B chromosomes --- transmission --- drive --- host/parasite interaction --- supernumerary chromosomes --- karyotype evolution --- genome instability --- supernumerary chromosomes --- heterochromatin --- parent-of-origin effects --- paternal X chromosome --- maternal X chromosome --- controlling element --- teleost --- population analysis --- whole genome resequencing --- DNA copy number variation --- ribosomal DNA --- B chromosomes --- FISH (fluorescence in situ hybridisation) --- GISH (genomic in situ hybridisation) --- Prospero autumnale complex --- supernumerary chromosomal segments (SCS) evolution --- tandem repeats --- Drosophila --- supernumerary --- satellite DNA --- sSMC --- B chromosomes --- dot-like (micro) Bs --- karyotypic characteristics --- ?s --- B morphotypes --- Apodemus peninsulae --- maize B chromosome --- centromere --- inactivation --- reactivation --- de novo centromere formation --- epigenetics --- supernumerary chromosomes --- additional chromosomes --- chromosome polymorphism --- evolution --- B chromosomes --- karyotypes --- genome evolution --- interphase nucleus --- mammals --- genes --- repetitive DNA --- transcription of heterochromatin --- B chromosomes --- grasshoppers --- DNA composition --- repeat clusters --- euchromatin degradation --- microdissected DNA probes --- B chromosome --- satellite DNA --- mobile element --- organelle DNA --- chromosome evolution --- fluorescent in situ hybridization --- Orthoptera --- satellite DNA --- supernumerary chromosome --- RepeatExplorer --- supernumerary chromosomes --- B chromosomes --- next-generation sequencing --- coverage ratio analysis --- n/a --- B chromosome --- transmission --- origin --- drive --- n/a

Molecular Advances in Wheat and Barley

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ISBN: 9783039213719 / 9783039213726 Year: Pages: 290 DOI: 10.3390/books978-3-03921-372-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-12-09 11:49:15
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Abstract

Allohexaploid bread wheat and diploid barley are two of the most cultivated crops in the world. This book reports novel research and reviews concerning the use of modern technologies to understand the molecular bases for wheat and barley improvement. The contributions published in this book illustrate research advances in wheat and barley knowledge using modern molecular techniques. These molecular approaches cover genomic, transcriptomic, proteomic, and phenomic levels, together with new tools for gene identification and the development of novel molecular markers. Overall, the contributions for this book lead to a further understanding of regulatory systems in order to improve wheat and barley performance.

Keywords

Triticum durum --- Aegilops tauschii --- Triticum aestivum --- marker-trait associations --- genes --- bread wheat --- genetic biofortification --- favorable alleles --- allohexaploid --- homoeolog --- hybrid necrosis --- molecular marker --- wheat --- wheat --- rye --- 6R --- small segment translocation --- powdery mildew --- transgenic wheat --- 12-oxophytodienoate reductase --- jasmonates --- freezing tolerance --- HIGS --- transgene --- wheat --- barley --- cereal cyst nematodes --- wheat --- barely --- breeding --- biotechnology --- resistance --- Triticum aestivum --- Landrace --- Powdery mildew --- Bulked segregant analysis-RNA-Seq (BSR-Seq) --- Single nucleotide polymorphism (SNP) --- Kompetitive Allele Specific PCR (KASP) --- Blumeria graminis f. sp. tritici --- protein two-dimensional electrophoresis --- mass spectrometry --- Pm40 --- Barley --- Grain development --- Transcriptional dynamics --- RNA editing --- RNA-seq --- durum wheat --- Tunisian landraces --- center of diversity --- genetic diversity --- population structure --- DArTseq technology --- chromatin --- 3D-FISH --- nucleus --- introgression --- rye --- hybrid --- wheat --- genome stability --- wheat --- Thinopyrum --- chromosome --- ND-FISH --- oligo probe --- barley --- wheat --- protease --- germination --- grain --- abiotic stress --- antioxidant enzymes --- aquaporin --- TdPIP2 --- 1 --- histochemical analysis --- transgenic wheat --- transpiration --- wheat --- Aegilops tauschii --- Lr42 --- disease resistance --- molecular mapping --- KASP markers --- marker-assisted selection --- phytase --- wheat --- barley --- purple acid phosphatase phytase --- PAPhy --- mature grain phytase activity (MGPA) --- genome assembly --- bread wheat --- barley --- optical mapping --- BAC --- ribosomal DNA --- cereals --- CRISPR --- crops --- genetic engineering --- genome editing --- plant --- Triticeae --- n/a

Prospects for Schistosomiasis Elimination

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ISBN: 9783039213573 / 9783039213580 Year: Pages: 308 DOI: 10.3390/books978-3-03921-358-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General) --- Internal medicine
Added to DOAB on : 2019-12-09 11:49:15
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Abstract

Current efforts to limit the ravages of schistosomiasis are pushing the world closer to eliminating a chronic infection that has been associated with human life in the tropics since time immemorial. This notwithstanding, the disease remains a scourge for large populations in sub-Saharan Africa, Latin America, and Southeast Asia, and the main part of this book is made up by papers dealing with its current distribution, discussing ways and means to establish and implement improved control approaches. While chemotherapy limits the symptoms caused by schistosomiasis, the number of infected people will not decrease until the parasite's life cycle is interrupted. To that end, some papers focus on the intermediate snail host, which is notoriously difficult to control, while others discuss human hygiene and sanitation. The latter approach not only prevents infection through avoiding people being infected from the snail, but more importantly, also stops people infecting the snail by leaving contagious feces and urine in nature. With morbidity reduced by chemotherapy, the immediate target now is the interruption of transmission to be achieved by new tools, such as the novel chemotherapies, improved diagnostics (for humans, animals, and snails), and vaccines discussed in several of the papers. As made clear in this book, a complex infection requires new tools as well as work on many fronts, above all; however, a clear idea is needed as to how to skillfully combine the tools available and sustain implemented control activities.

Keywords

schistosomiasis --- Schistosoma --- vaccine --- zoonosis --- Asia --- Africa --- domestic animals --- buffalo --- cattle --- sheep --- goats --- Côte d’Ivoire --- coverage rate --- praziquantel --- preventive chemotherapy --- Schistosoma haematobium --- Schistosoma mansoni --- schistosomiasis --- diagnosis --- control and elimination --- DNA --- polymerase chain reaction --- schistosomiasis --- control --- elimination --- Africa --- operational research --- goals --- guidelines --- schistosomiasis --- vector control --- snail resistance --- gene drive --- transgenic snail --- schistosomiasis --- Kato-Katz --- POC-CCA --- young adults --- soil-transmitted helminths --- n/a --- Mayuge --- MDA coverage --- praziquantel --- S. mansoni --- systematic non-compliance --- treatment-opportunities --- Uganda --- climate change --- schistosomiasis --- distribution --- intermediate snail host --- transmission --- modelling --- schistosomiasis --- soil-transmitted-helminthiasis --- mapping --- preventive chemotherapy --- transmission control --- Gabon --- Central Africa --- schistosomiasis --- vaccine --- Sm14 --- FABP --- Schistosoma japonicum --- Oncomelania hupensis --- snail --- 28S ribosomal DNA --- PCR --- loop-mediated isothermal amplification (LAMP) --- pooled samples --- China --- schistosomiasis --- elimination --- praziquantel --- artemether --- combination therapy --- phylogeography --- Bulinus truncatus --- planorbidae --- Africa --- schistosomiasis --- neglected tropical diseases --- WIPO Re:Search --- BIO Ventures for Global Health --- cross-sector collaboration --- capacity-building --- drug discovery --- public-private partnerships --- GIS --- remote-sensing --- satellite --- international space station --- ECOSTRESS --- worldview --- spatio-temporal epidemiology --- climate change --- parasite --- schistosomiasis, leishmaniasis --- n/a --- schistosomiasis --- systems epidemiology --- systems thinking --- complexity --- neglected tropical diseases --- interdisciplinarity --- Schistosomiasis mansoni --- Caribbean --- elimination --- snail control --- Biomphalaria glabrata --- Schistosoma mekongi --- Neotricula aperta --- snail --- Cambodia --- Lao PDR --- elimination --- Asia --- control --- elimination --- epidemiology --- Schistosoma japonicum --- Schistosoma malayensis --- Schistosoma mekongi --- schistosomiasis --- Schistosomiasis --- Philippines --- schistosomiasis elimination --- S. japonicum zoonosis --- bovines --- schistosomiasis elimination --- snail control --- high-sensitivity diagnostics --- chemotherapy --- vaccine development --- health education --- sanitation

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MDPI - Multidisciplinary Digital Publishing Institute (3)


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eng (3)


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2019 (3)