Crop Improvement – Plant Nuclear Genomes

328. Heslop-Harrison JS. 2017. Crop Improvement: Plant Nuclear Genomes. Encyclopedia of Applied Plant Sciences 2nd Edition. In proof. Plant breeders work with large amounts of DNA sequence information including the sequences of all genes and the repetitive DNA that makes up the majority of most genomes. Knowledge of the diversity and evolution of the sequences…

Repetitive DNA in the catfish genome- rDNA, microsatellites, and Tc1-mariner transposon sequences in Imparfinis

339. Gouveia JG, Wolf IR, Vilas-Boas LA, Heslop-Harrison JS, Schwarzacher T, Dias AL. 2017. Repetitive DNA in the catfish genome: rDNA, microsatellites, and Tc1-mariner transposon sequences in Imparfinis species (Siluriformes, Heptapteridae). Journal of Heredity 108(6): 650-657. Journal link: https://doi.org/10.1093/jhered/esx065 Author PHHGouveia_CatfishRepeatsAuthorVersion Physical mapping of repetitive DNA families in the karyotypes of fish is important to understand the organization and evolution…

Polyploidy and interspecific hybridisation: partners for adaptation, speciation and evolution in plants

337. Alix K, Gérard PR, Schwarzacher T, Heslop-Harrison JS. 2017. Polyploidy and interspecific hybridisation: partners for adaptation, speciation and evolution in plants. Annals of Botany 120(2): 183-194. https://doi.org/10.1093/aob/mcx079  (Free access). Polyploidy, defined as whole genome duplication, is present in almost all lineages of higher plants, with multiple rounds of polyploidy occurring in most extant species. This Annals…

Identification and characterization of mobile genetic elements LINEs from Brassica genome

Nouroz F, Noreen S, Khan MF, Ahmed S, Heslop-Harrison JS. 2017. Identification and characterization of mobile genetic elements LINEs from Brassica genomes. Gene 627: 94-105. doi: 10.1016/j.gene.2017.06.015.. Abstract Among transposable elements (TEs), the LTR retrotransposons are abundant followed by nonLTR retrotransposons in plant genomes, the lateral being represented by LINEs and SINEs. Computational and molecular approaches were…

Polyploidy and interspecific hybridisation: partners for adaptation, speciation and evolution in plants

337. Alix K, Gérard PR, Schwarzacher T, Heslop-Harrison JS. 2017. Polyploidy and interspecific hybridisation: partners for adaptation, speciation and evolution in plants. Annals of Botany 120: 183–194. https://dx.doi.org/10.1093/aob/mcx079 (freely available) Author version (free to post) to come. Figure 1 showing polyploidy or WGD whole genome duplication events in plant evolution is here AlixSchwarzacherHeslopHarrisonPlantEvolutionPolyploidyWGDAnnalsBotany (Powerpoint format) Background. Polyploidy or whole…

New Project on Molecular Cytogenetics and Genomics of Ensete banana

We have a research project starting in 2017 on Ethiopian banana, Ensete ventricosum, for 18 months, in collaboration with Royal Botanic Gardens, Kew (Dr Paul Wilkin) and University of Addis Ababa (Professor Sebsebe Demissew). There is a post-doctoral position working with the project (closed 7 August 2017). The project “Modelling and genomics resources to enhance…

The landscape and structural diversity of LTR Retrotransposons in the Musa genome

334. Nouroz F, Noreen S, Ahmad H, Heslop Harrison JS(P). 2017. The landscape and structural diversity of LTR Retrotransposons in the Musa genome. Molecular Genetics and Genomics 292: 1051-1067. http://dx.doi.org/10.1007/s00438-017-1333-1 Publisher site (££$$€€ needs subscription) Author version of manuscript: Nouroz_MGG2017_MusaLTRretrotransposons_AuthorVer Long terminal repeat retrotransposons represent a major component of plant genomes and act as drivers of genome…

Molecular Diversity in some Ghanaian cowpea (Vigna unguiculata) accessions

315. Otwe EP, Agyirifo DS, Galyuon IK, Heslop-Harrison JS. 2017. Molecular Diversity in some Ghanaian Cowpea [Vigna unguiculata L.(Walp)] Accessions. Tropical Plant Biology.:1-11. DOI 10.1007/s12042-017-9184-9 BibT Cowpea [Vigna unguiculata L. (Walp)] is grown mainly for its protein-rich grains and is consumed in various forms in sub-Saharan Africa. Average grain yield in farmers’ fields is generally low…

Speciation in Callitriche (Plantaginaceae): the allopolyploid origin of C. platycarpa

Schwarzacher T, Scrocca V, Johnson K, Gornall RJ. 2016. Speciation in Callitriche (Plantaginaceae): the allopolyploid origin of C. platycarpa. New Journal of Botany. 2016 Sep 1;6(2-3):98-101. DOI: 10.1080/20423489.2016.1271293 Genomic in situ hybridisation (GISH) experiments involving hybridising labelled genomic DNA from the diploid species C. stagnalis, C. obtusangula and C. cophocarpa to chromosome spreads of the tetraploid C….

Chloroplast genomes from apomictic Taraxacum – identity and variation between microspecies

Taraxacum or dandelion chloroplast sequence diversity. Salih et al. PLoS One 2017. 333. Salih RHM, Majeský L, Schwarzacher T, Gornall R, Heslop-Harrison P. 2017.  Complete chloroplast genomes from apomictic Taraxacum (Asteraceae): Identity and variation between three microspecies. PLoS ONE 12(2): e0168008. doi:10.1371/journal.pone.0168008. Chloroplast DNA sequences show substantial variation between higher plant species, and less variation within…

The agriculture-nutrition-health nexus at the cost of water availability

332. Noorka IR, Taufiqullah, Heslop-Harrison JS, Schwarzacher T. 2017. The agriculture-nutrition-health nexus at the cost of water availability in maize diverse genotypes to ensure food security. International Journal of Water Resources and Arid Environments 6(2): 242-251, 2017 ISSN 2079-7079 publisher site: https://psipw.org/attachments/article/401/13e.pdf Originally published as:  2016. Proceedings of the 7th International Conference on Water Resources and the Arid Environments (ICWRAE…

Domestication, polyploidy and genomics of crops and weeds PAGXXV

Plant and Animal Genome Conference in San Diego #PAGXXV each January is the chance to join 3500 people working in genomics. I presented a talk on the molecular cytogenetics group’s work, starting with consideration of early stages of crop domestication, and then thinking about how we can make agriculture more sustainable. I also considered weeds,…

CENH3 morphogenesis reveals dynamic centromere associations during synaptonemal complex formation and the progression through male meiosis in hexaploid wheat

330. Sepsi A, Higgins JD, Heslop-Harrison JS, Schwarzacher T. 2017. CENH3 morphogenesis reveals dynamic centromere associations during synaptonemal complex formation and the progression through male meiosis in hexaploid wheat. Plant Journal 89: 235-249. http://dx.doi.org/10.1111/tpj.13379 and Author Version: Sepsi et al. 2016. CENH3 and wheat meiosis. Plant Journal. See bottom of page for YouTube video links. During…

Polyploidy

328. Heslop-Harrison JS. 2017. Polyploidy. In: Reference Module in Life Sciences, Elsevier, ISBN: 978-0-12- 809633-8, http://dx.doi.org/10.1016/B978-0-12-809633-8.06934-X (££$$€€) (see https://www.elsevier.com/solutions/sciencedirect/content/reference-modules for information about the series.) Abstract Polyploid organisms are eukaryotes that have more than two complete sets of chromosomes (one from each parent or ancestor) in somatic and germline cells of animals, fungi, and plants. Polyploidy of individual cells…