Dr Catherine Howarth

PhD

Dr Catherine Howarth

Reader - IBERS

Contact Details

Research

Using a combination of DNA markers and trait analysis to elucidate the genetic and physiological basis of agronomically important traits and their introgression to cultivated cereals. Aims include genetic improvement of oats and pearl millet by marker assisted selection leading to improved sustainable production, disease resistance, stress tolerance and end use quality.

Publications

Haplotype based genotyping-by-sequencing in oat genome researchBekele, W. A., Wight, C. P., Chao, S., Howarth, C. & Tinker, N. A. 2018 (Accepted/In press) In : Plant Biotechnology Journal.
Mapping of easy to screen SSR markers for selection of RFLP markers-bracketed downy mildew resistance QTLs in pearl milletTaunk, J., Sehgal, D., Yadav, N., Howarth, C., Yadav, R. & Yadav, R. 2017 In : European Journal of Plant Pathology.
High-density marker profiling confirms ancestral genomes of Avena species and identifies D-genome chromosomes of hexaploid oatYan, H., Bekele, W. A., Wight, C. P., Peng, Y., Langdon, T., Latta, R. G., Fu, Y-B., Diederichsen, A., Howarth, C., Jellen, E. N., Boyle, B., Wei, Y. & Tinker, N. A. 2016 In : Theoretical and Applied Genetics.129, 11, p. 213302149
Genetic diversity of stay-green sorghums and their derivatives revealed by microsatellitesGalyuon, I. K. A. & Howarth, C. 2016 In : African Journal of Biotechnology.15, 25, p. 1363-1374
A Consensus Map in Cultivated Hexaploid Oat Reveals Conserved Grass Synteny with Substantial Subgenome RearrangementChaffin, A. S., Huang, Y-F., Smith, S., Bekele, W. A., Babiker, E., Gnanesh, B. N., Foresman, B. J., Blanchard, S. G., Jay, J. J., Reid, R. W., Wight, C. P., Chao, S., Oliver, R. E., Islamovic, E., Kolb, F. L., Mccartney, C., Mitchell Fetch, J. W., Beattie, A. D., Bjørnstad, Å., Bonman, J. M., Langdon, T., Howarth, C., Brouwer, C. R., Jellen, E. N., Esvelt Klos, K., Poland, J. A., Hsieh, T., Brown, R., Jackson, E. W., Schlueter, J. A. & Tinker, N. A. 2016 In : The Plant Genome.9, 2, 0102
Population Genomics Related to Adaptation in Elite Oat GermplasmEsvelt Klos, K., Huang, Y., Bekele, W. A., Obert, D. E., Babiker, E., Beattie, A. D., Bjørnstad, Å., Bonman, J. M., Carson, M. L., Chao, S., Gnanesh, B. N., Griffiths, I., Harrison, S. A., Howarth, C. J., Hu, G., Ibrahim, A., Islamovic, E., Jackson, E. W., Jannink, J., Kolb, F. L., Mcmullen, M. S., Mitchell Fetch, J., Murphy, J. P., Ohm, H. W., Rines, H. W., Rossnagel, B. G., Schlueter, J. A., Sorrells, M. E., Wight, C. P., Yan, W. & Tinker, N. A. 2016 In : The Plant Genome.9, 2, 12 p., 0103
Achievements and impact of the Collaborative Oat Research Enterprise (CORE)Tinker, N. A., Jackson, E. W., Snyder, S., Tiede, T., Azar, C., Babiker, E., Beuch, S., Bjørnstad, Å., Ceplitis, A., Chao, S., Cowan, S., Dumlupinar, Z., Esvelt Klos, K., Fetch, T., Harrison, S., Howarth, C., Hu, G., Huang, Y-F., Isidro Sanchez, J., Jellen, R., Kolb, F., Langdon, T., Ma, B., Maughan, J., McCartney, C., McMullen, M., Miller, S., Mitchell Fetch, J., Paczos-Grzęda, E., Peng, Y., Prats, E., Ren, C., Singh, J., Sorrells, M. E., Tumino, G., Vallenback, P., Wight, C. P., Winkler, L. & Zwer, P. 2016 18 ed.Oat Newsletter. 26 p.
Genome-wide association study for crown rust (Puccinia coronata f. sp. avenae) and powdery mildew (Blumeria graminis f. sp. avenae) resistance in an oat (Avena sativa) collection of commercial varieties and landracesMontilla-Bascón, G., Rispail, N., Sánchez-Martín, J., Rubiales, D., Mur, L. A. J., Langdon, T., Howarth, C. J. & Prats, E. 2015 In : Frontiers in Plant Science.6, 103
Image based estimation of oat panicle development using local patternsBoyle, R. D., Corke, F. & Howarth, C. J. 2014 In : Functional Plant Biology.42, 5, p. 433-443
Genetic Diversity and Population Structure Among Oat Cultivars and LandracesMontilla-Bascón, G., Sánchez-Martín, J., Rispail, N., Rubiales, D., Mur, L., Langdon, T., Griffiths, I., Howarth, C. & Prats, E. 2013 In : Plant Molecular Biology Reporter.31, 6, p. 1305-1314
Crops that feed the world 9. Oats- a cereal crop for human and livestock feed with industrial applicationsMarshall, A. H., Cowan, A. A., Edwards, S., Griffiths, I. M., Howarth, C. J., Langdon, T. & White, E. 2013 In : Food Security.5, 1, p. 13-3320 p.
SNP Discovery and Chromosome Anchoring Provide the First Physically-Anchored Hexaploid Oat Map and Reveal Synteny with Model SpeciesOliver, R. E., Tinker, N. A., Lazo, G. R., Chao, S., Jellen, E. N., Carson, M. L., Rines, H. W., Obert, D. E., Lutz, J. D., Shackelford, I., Korol, A. B., Wight, C. P., Gardner, K. M., Hattori, J., Beattie, A. D., Bjørnstad, Å., Bonman, J. M., Jannink, J., Sorrells, M. E., Brown-Guedira, G. L., Mitchell Fetch, J. W., Harrison, S. A., Howarth, C. J., Ibrahim, A., Kolb, F. L., Mcmullen, M. S., Murphy, J. P., Ohm, H. W., Rossnagel, B. G., Yan, W., Miclaus, K. J., Hiller, J., Maughan, P. J., Redman Hulse, R. R., Anderson, J. M., Islamovic, E., Jackson, E. W. & Xu, M. (ed.) 2013 In : PLoS One.8, 3, e58068
Successful Marker-Assisted Selectionfor Disease Resistance and drought Tolerance in Pearl Millet in IndiaYadav, R. S., Howarth, C. J., Hash, C. T., Witcombe, J. R. & Khairwal, I. S. 2013 Biotechnologies at Work for Smallholders: Case Studies from Developing Countries in Crops, Livestock and Fish. Ruane, J., Dargie, J. D., Mba, C., Boettcher, P., Makkar, H. P. S., Bartley, D. M. & Sonnino, A. (eds.). Rome: Food and Agriculture Organization, p. 18-269 p.
Developing and Using Genetic and Genomic Resources in Pearl Millet for Enhanced Traits Dissection and BreedingYadav, R. S., Sehgal, D., Howarth, C. J., Skøt, L., Srivastava, R. K., Vadez, V., Kholova, J., Hash, C. T., Yadav, R., Yadav, N., Singh, R., Taunk, J. & Sharma, P. 2013
QTL associated with powdery mildew resistance in Avena sativaHowarth, C. J., Pearson, K., Cowan, A. A. & Griffiths, I. M. 2012 Ninth International Oat Conference.
Genetic analysis of β-glucan content in diploid and hexaploid oatHowarth, C. J. 2012 9th International Oat Conference.
Exploring synteny of candidate genes underpinning a major pearl millet drought tolerance QTL across sorghum, rice and the perennial ryegrass (Lolium perenne L.)Singh, R., Sehgal, D., Yadav, R. C., Howarth, C., Srivastava, R. K., Steele, K., Yadav, N. R., Vadez, V., Hash, C. T. & Yadav, R. 2012
Using genetic and genomic resources in breeding improved pearl millet cultivars that are resistant to biotic and abiotic stresses and have improved nutritional qualityYadav, R., Sehgal, D., Srivastava, R. K., Sharma, P. C., Howarth, C. & Hash, C. T. 2012
EPPN: High throughput plant phenotyping facilities at AberystwythDoonan, J., Howarth, C., Camargo-Rodriguez, A., Allison, G., Swain, G., Gay, A. & Draper, J. 2012
Choosing the number of labels in image segmentationLiu, Y., Draper, J. H., Gay, A. P., Howarth, C. & Martin, R. R. 2011
Harnessing new technologies for sustainable oat production and utilisationMarshall, A. H., Cowan, A. A., Howarth, C. J. & Langdon, T. 2011 Home-Grown Cereals Authority. (HGCA Research and Development Annual Project Report 2011, RD-2008-3566)
Development of high throughput plant phenotyping facilities at AberystwythHowarth, C. J., Gay, A. P., Draper, J. & Powell, W. 2011 Phenomics Workshop.
Nitrogen use efficiency in winter oats (Avena sativa)Griffiths, I., Jenkins, G., Cowan, A. & Howarth, C. 2010
Genetics and genomics resources for enhancing conventional breeding in pearl milletYadav, R. S., Sehgal, D., Ramu, P., Kholova, J., Kakkera, A., Sharma, P. C., Vadez, V., Howarth, C. J. & Hash, C. T. 2010
Co-localization of quantitative trait loci for foliar disease resistance in sorghumMohan, S. M., Madhusudhana, R., Mathur, K., Howarth, C. J., Srinivas, G., Satish, K., Reddy, R. N. & Seetharama, N. 2009 In : Plant Breeding.128, 5, p. 532-5354 p.
Dissecting the yield components in oatsGriffiths, I. M., Jenkins, G., Cowan, A. A. & Howarth, C. J. 2009
New DArT markers for oat provide enhanced map coverage and global germplasm characterizationTinker, N. A., Kilian, A., Wight, C. P., Heller-Uszynska, K., Wenzl, P., Rines, H. W., Bjørnstad, A., Howarth, C. J., Jannink, J-L., Anderson, J. M., Rossnagel, B. G., Stuthman, D. D., Sorrells, M. E., Jackson, E. W., Tuvesson, S., Kolb, F. L., Olsson, O., Federizzi, L. C., Carson, M. L., Ohm, H. W., Molnar, S. J., Scoles, G. J., Eckstein, P. E., Bonman, J. M., Ceplitis, A. & Langdon, T. 2009 In : BMC Genomics.10, 1, p. 39 39
The incorporation of important traits underlying sustainable development of the oat crop through combining 'conventional' phenotypic selection with molecular marker technologies (OatLINK)Marshall, A. H., Howarth, C. J., Cowan, A. A., Langdon, T., Valentine, J. & McDevitt, J. E. 2009 Prifysgol Aberystwyth | Aberystwyth University. 42 p. (HGCA Final Report on project RD-2004-2957)
The use of genetic mapping to access valuable traits in wild oatsHowarth, C., Cowan, A., Leggett, J. M. & Langdon, T. 2008
Genetic improvement of growth and survival at high temperatureHowarth, C. J. 2008 Abiotic Stresses: Plant Resistance through breeding and molecular appraoches. Ashraf, M. & Harris, P. (eds.). Taylor & Francis, p. 277-30024 p.
Development of genic-microsatellite markers for sorghum staygreen QTL using a comparative genomic approach with riceSrinivas, G., Satish, K., Murali mohan, S., Nagaraja Reddy, R., Madhusudhana, R., Balakrishna, D., Venkatesh Bhat, B., Howarth, C. J. & Seetharama, N. 2008 In : Theoretical and Applied Genetics.117, 2, p. 283-29614 p.
Breeding for abiotic stresses for sustainable agricultureWitcombe, J. R., Hollington, P. A., Howarth, C. J., Reader, S. & Steele, K. A. 2008 In : Philosophical Transactions of the Royal Society B: Biological Sciences.363, 1492, p. 703-71614 p.
Dissecting the components of yield in winter oats: genetic diversity of 16 oat linesGriffith, I. M., Jenkins, G., Cowan, A. A. & Howarth, C. J. 2008
Genetic diversity among pearl millet maintainers using microsatellite markersKapila, R. K., Yadav, R. S., Plaha, P., Rai, K. N., Yadav, O. P., Hash, C. T. & Howarth, C. J. 2008 In : Plant Breeding.127, 1, p. 33-375 p.
Dissecting the components of yield in oatsGriffiths, I. M., Jenkins, G., Cowan, A. A. & Howarth, C. J. 2008
Introgression of traits from wild ancestors into cultivated oatHowarth, C. J., Cowan, A. A., Leggett, J. M. & Langdon, T. 2008 p. W47
The use of genetic mapping to access and understand valuable traits in wild relatives of the cultivated oatHowarth, C. J., Cowan, A. A., Leggett, J. M. & Langdon, T. 2008
Identification of markers associated with traits of agronomic importance in winter oatsHowarth, C. J., Cowan, A. A., Griffiths, I. M. & Langdon, T. 2008
OATLINK ReportMarshall, A. H., Cowan, A. A., Howarth, C. J., McDevitt, J. E., Langdon, T. & Valentine, J. 2008 Department for Environment, Food and Rural Affairs. 5 p. (Annual OATLINK Report for DEFRA SAL LINK)
A review of the health benefits of oatsStewart, D., McDougall, G. J., Valentine, J., Cowan, A. A. & Howarth, C. J. 2008 Scottish Executive Environment and Rural Affairs Department. (Final Report SEERAD Commission No SCR/917/06)
Molecular and cytogenetic study of mobile elements as genome-specific sequences in Avena speciesWnetrzak, J., Evans, A. L. W., Howarth, C. J., Langdon, T. & Hasterok, R. 2008
Quantitative trait loci for grain yield in pearl millet under variable postflowering moisture conditionsBidinger, F. R., Nepolean, T., Hash, C. T., Yadav, R. S. & Howarth, C. J. 2007 In : Crop Science.47, 3, p. 969-980
The genetic control of senescence revealed by mapping quantitative trait lociDonnison, I. S., Thomas, H., Armstead, I. P., Ougham, H. J., Howarth, C. J. & Galyuon, I. K. A. 2007 Annual Plant Reviews: Senescence Processes in Plants. Gan, S. (ed.). Wiley, Vol. 26, p. 171-20131 p.
Independent validation of pearl millet Lg2 terminal drought tolerance QTLKumar, P. S., Hash, C. T., Bidinger, F. R., Senthilvel, S., Howarth, C. & Yadav, R. 2007 p. P377
Replicated success in marker-assisted backcrossing of a major drought tolerance QTL in pearl milletHash, C. T., Rizvi, S. M. H., Kumar, P. S., Bidinger, F. R., Serraj, R., Vadez, V., Nepolean, T., Senthilvel, S., Sharma, A., Kolesnikova-Allen, M. A., Yadav, O. P., Yadav, R. & Howarth, C. 2007 p. P372
Genetic analysis of the response to high temperature and drought in pearl milletHowarth, C., Yadav, R., Cavan, G. P., Skot, K., Bidinger, R. & Hash, C. T. 2007 p. P15
Teamwork delivers biotechnology products to Indian small-holder crop-livestock producers: Pearl millet hybrid “HHB 67 Improved” enters seed delivery pipelineHash, C. T., Sharma, A., Kolesnikova-Allen, M. A., Singh, S. D., Thakur, R. P., Bhasker Raj, A. G., Ratnaji Rao, M. N. V., Nijhawan, D. C., Beniwal, C. R., Sagar, P., Yadav, H. P., Yadav, Y. P., Srikant, S., Bhatnagar, S. K., Khairwal, I. S., Howarth, C. J., Cavan, G. P., Gale, M. D., Liu, C., Devos, K. M., Breese, W. A. & Witcombe, J. R. 2006 In : SAT Agricultural Research.2, 1, 3 p.
Development of markers for oil and other traits of agronomic importance in oatsHowarth, C., Langdon, T., Cowan, A. & Valentine, J. 2006
Successful marker-assisted breeding to improve pearl millet from lab to farmers' fieldHowarth, C., Yadav, R., Skot, K., Bidinger, F. R., Masood, H. R., Sharma, A., Breese, W. A., Witcombe, J. R. & Hash, C. T. 2006
Field evaluation of drought tolerance QTL effects on phenotype and adaptation in pearl millet [Pennisetum glaucum (L.) R. Br.] topcross hybridsBidinger, F. R., Serraj, R., Rizvi, S. M. H., Howarth, C. J., Yadav, R. S. & Hash, C. T. 2005 In : Field Crops Research.94, 1, p. 14-3219 p.
Improving pearl millet drought toleranceYadav, R. S., Bidinger, F. R., Hash, C. T., Cavan, G. P., Serraj, R. & Howarth, C. J. 2005 In : International Sorghum and Millet Newsletter.42, p. 15-173 p.
Phylogeny of ACCase in AvenaHowarth, C. J., Leggett, J. M., Langdon, T. & Valentine, J. 2005 p. 3-53 p.
Using molecular mapping to access and understand valuable traits in wild relatives of oatsHowarth, C., Cowan, A. A., Leggett, J. M. & Valentine, J. 2005 p. 1001 p.
Genetic diversity in Avena species and in spring and winter cultivated oatsHowarth, C. 2005
Genetic diversity in spring and winter oat varieties from the 1920s to the present dayHowarth, C. 2005 p. S267
Maintaining yield under drought stress by different mechanisms in a range of genetic sources of stay-green sorghumGalyuon, I. K. A., Gay, A., Borrell, A. K. & Howarth, C. 2005 p. S314
Genomic regions associated with grain yield and aspects of post-flowering drought tolerance in pearl millet across stress environments and tester backgroundYadav, R. S., Hash, C. T., Bidinger, F. R., Devos, K. M. & Howarth, C. J. 2004 In : Euphytica.136, 3, p. 265-27713 p.
Development and use of markers for oil in oatsHowarth, C., Langdon, T., Cowan, A., Leggett, M. & Valentine, J. 2004 p. 531 p.
Pearl millet genomics and breeding for resistance to downy mildewBreese, W. A., Hash, C. T., Devos, K. M. & Howarth, C. J. 2003 Sorghum and Millet Diseases (World Agriculture). Leslie, J. F. (ed.). 1 ed.Wiley, p. 243-25614 p.
Pearl millet genomics - an overview with respect to breeding for resistance to downy mildewBreese, W. A., Hash, C. T., Devos, K. M. & Howarth, C. J. 2003 Sorghum and Millets Diseases. Leslie, J. F. (ed.). University of Iowa Press, p. 243-2464 p. (World Agriculture)
Mapping and characterisation of QTLxE interactions of grain and stover yield determining traits in pearl millet.Yadav, R. S., Bidinger, F. R., Hash, C. T., Yadav, Y. P., Yadav, O. P., Bhatnagar, S. K. & Howarth, C. J. 2003 In : Theoretical and Applied Genetics.106, 3, p. 512-5209 p.
Impact of pearl millet molecular marker researchHash, C. T., Yadav, R. S., Sharma, A., Bidinger, F. R., Devos, K. M., Gale, M. D., Howarth, C. J., Chandra, S., Cavan, G. P., Serraj, R., Kumar, P. S., Breese, W. A. & Witcombe, J. R. 2003 Department for International Development. 33 p. (Research Highlight Plant Science Programme Annual Report to DFID 2002)
One hundred years of progress in cereal breeding from Mendel to molecular selection - OatsValentine, J., Cowan, A. A., Howarth, C. J. & Langdon, T. 2003 From biodiversity to genomics: breeding strategies for small grain cereals in the third Millennium . Mare, C., Faccioli, P. & Stanca, A. M. (eds.). Istituto Sperimentale per la Cerealicoltura, p. 79-824 p.
Quantitative trait loci associated with traits determining grain and stover yield in pearl millet under terminal drought stress conditions.Yadav, R. S., Hash, C. T., Bidinger, F. R., Cavan, G. P. & Howarth, C. J. 2002 In : Theoretical and Applied Genetics.104, 1, p. 67-8317 p.
Mapping and marker-assisted selection to improve drought tolerance in the tropical cereal, pearl milletYadav, R., Hash, C. T., Sharma, A., Skot, K., Qi, Q. X., Lindup, S., Bidinger, F. R. & Howarth, C. 2000 Quantatitive Genetics and Breeding Methods: The Way Ahead: Proceedings 11th EUCARPIA Section on Biometrics in Plant Breeding Meeting. Gallais, A., Dillmann, C. & Goldringer, I. (eds.). p. 295-296
Using molecular mapping to access and understand valuable and novel traits in wild relatives of oatsHowarth, C., Cowan, A., Leggett, J. M. & Valentine, J. 2000
Identification and utilisation of quantitative trait loci to improve terminal drought tolerance in pearl millet (Pennisetum glaucum (L.) R. Br.)Yadav, R., Hash, C. T., Bidinger, F. R., Dhanoa, M. S. & Howarth, C. 2000 p. 108-113
Growth and survival at extreme temperatures: Implications for crop improvementHowarth, C. 1998 Crop productivity and sustainability: Shaping the future, proceedings of the 2nd International Crop Science Congress. Chopra, V. L., Singh, R. B. & Varma, A. (eds.). Oxford & IBH, p. 467-483
RFLP and QTL analysis of seedling thermotolerance in contrasting genotypes of pearl milletCavan, G. P., Howarth, C., Skot, L., Pollock, C., Hash, C. T., Weltzien Rattunde, E. & Bidinger, F. R. 1994 ODA Plant Series Research Compendium 1993. Witcombe, J. R. & Wright, D. A. (eds.). p. 39-40
Physiological and biochemical assessment of seedling thermotolerance in pearl milletHowarth, C., Cavan, G. P., Stevens, M. J., Pollock, C., Weltzien Rattunde, E., Bidinger, F. R. & Hash, C. T. 1994 ODA Plant Series Research Compendium 1993. Witcombe, J. R. & Wright, D. A. (eds.). p. 41-43
Temperature StressPollock, C., Eagles, C. F., Howarth, C., Schunmann, P. H. D. & Stoddart, J. L. 1993 Plant Adaptation to Environmental Stress. Fowden, L., Mansfield, T. & Stoddart, J. (eds.). Springer Nature, p. 109-132
Heat stress: effect of high temperatures on protein synthesisHowarth, C. 1993 Methods in Comparative Plant Ecology: A Laboratory Manual. Hendry, G. A. F. & Grime, J. P. (eds.). Springer Nature, p. 55-584 p.
Temperature shock proteins in plantsOugham, H. & Howarth, C. 1988 Plant and Temperature. Long, S. P. & Woodward, F. I. (eds.). Society for Experimental Biology, Vol. 42, p. 259-280 (Society for Experimental Biology)