Katherine Steele

Katherine Steele
Bangor University · School of Environment, Natural Resources and Geography

Ph.D University of Nottingham

About

61
Publications
11,976
Reads
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2,627
Citations
Citations since 2016
24 Research Items
1143 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Additional affiliations
April 2016 - May 2020
Bangor University
Position
  • Professor (Associate)
Description
  • Sustainable Crop Production
December 2008 - April 2016
Bangor University
Position
  • Lecturer
January 1999 - December 2008
University of Wales Bangor
Position
  • University of Wales, Bangor
Description
  • DFID Plant Sciences Research Programme

Publications

Publications (61)
Article
Full-text available
Plant resistance genes (R-genes) drive the immune responses of crops against specific pathotypes of disease-causing organisms. Over time, genetic diversity in R-genes and R-pseudogenes has arisen among different rice varieties. This bioinformatics study was carried out to (i) predict the full sets of candidate nucleotide-binding site leucine-rich r...
Article
Full-text available
Frost tolerance is the ability of plants to withstand freezing temperatures without unrecoverable damage. Measuring frost tolerance involves various steps, each of which will vary depending on the objectives of the study. This systematic map takes an overall view of the literature that uses frost tolerance measuring techniques in gymnosperms, focus...
Article
Full-text available
Climate change is predicted to increase temperature and seasonal temperature variance in Great Britain (GB). Sitka spruce (Picea sitchensis (Bong.) Carr) is the most important tree species used in commercial plantations throughout Europe and GB. Frosts that occur outside the winter dormancy period can negatively affect trees, since they happen afte...
Article
Full-text available
The online version of this article (https://doi.org/10.1007/s12161-020-01892-3) contains supplementary material, which is available to authorized users. Authentication of Basmati rice has relied on microsatellite markers since 2004, but microsatellites cannot distinguish between all of the forty-one Basmati varieties approved in 2017. This study in...
Article
Full-text available
The conservation and utilization of germplasm is contingent on its proper characterization at morphological or molecular levels. The present study aimed to elucidate the population sub-structure of 470 temperate rice germplasm collections of the Kashmir Valley. Analysis was carried out using KASP (Kompetitive Allele Specific PCR) assay on 213 genom...
Article
Badh2 of rice is considered to be the major gene responsible for the fragrance in rice. The wild type badh2 allele encodes betaine aldehyde dehydrogenase 2 (BADH2) enzyme while the mutated version of badh2 gene encodes non-functional BADH2 enzyme that leads to the accumulation of 2-acetyl-1-pyrroline (2AP), the principal fragrant compound in rice....
Article
Full-text available
Tomatoes are a major global food staple but Phytophthora infestans (an Oomycete) causes late-blight, a devastating disease that precludes commercial tomato production from moist temperate areas such as the United Kingdom and Northern Europe. We dissected the genetic architecture of resistance to late-blight as well as traits that improve yield and...
Article
Full-text available
We constructed a high-density genetic map for Mongolian gerbils (Meriones unguiculatus). We genotyped 137 F2 individuals with a genotype-by-sequencing (GBS) approach at over 10,000 loci and built the genetic map using a two-step approach. First, we chose the highest-quality set of 485 markers to construct a robust map of 1239 cM with 22 linkage gro...
Preprint
Full-text available
We constructed a high-density genetic map in Mongolian gerbils (Meriones unguiculatus). We genotyped 137 F2 individuals with a genotype-by-sequencing (GBS) approach at over 10,000 loci and build the genetic map using a two-step approach. First, we chose the highest-quality set of 485 markers to construct a high-quality framework map of 1,239cM with...
Article
Full-text available
Few public sector rice breeders have the capacity to use NGS-derived markers in their breeding programmes despite rapidly expanding repositories of rice genome sequence data. They rely on > 18,000 mapped microsatellites (SSRs) for marker-assisted selection (MAS) using gel analysis. Lack of knowledge about target SNP and InDel variant loci has hampe...
Data
Accelerating public sector rice breeding with high-density KASP markers derived from whole genome sequencing of indica rice
Article
Full-text available
Non-model rodents are widely used as subjects for both basic and applied biological research, but the genetic diversity of the study individuals is rarely quantified. University-housed colonies tend to be small and subject to founder effects and genetic drift and so may be highly inbred or show substantial genetic divergence from other colonies, ev...
Preprint
Full-text available
Non-model rodents are widely used as subjects for both basic and applied biological research, but the genetic diversity of the study individuals is rarely quantified. University-housed colonies tend to be small and subject to founder effects and genetic drift and so may be highly inbred or show substantial genetic divergence from other colonies, ev...
Article
Phytophthora infestans populations can differ in composition as a result of host-specialisation on tomato and potato hosts. In Great Britain many amateur gardeners grow outdoor tomatoes but there is little or no commercial tomato production outdoors. This study analysed isolates of P. infestans from British gardens with twelve multiplexed SSR marke...
Article
Full-text available
Ion accumulation and growth under salt stress was studied in two experiments in a rice mapping population derived from parents CO39 and Moroberekan with 4-fold differences in shoot Na + accumulation. The 120 recombinant inbred lines (RILs) had differences up to 100-fold in Na + . Measurement of 'salt tolerance' (biomass production of the RILs in 10...
Article
Low glycemic index (GI) grains with high levels of β glucan soluble fibre are beneficial for health. Naked barley (Hordeum vulgare L.) cultivars generally have higher grain β glucan contents than hulled barley, but lower yields. Naked grain requires no pearling or processing for use in wholegrain health foods and it is widely recognised that consum...
Conference Paper
Full-text available
A study was carried out with the aim of establishing whether Phytophthora infestans exhibits host specificity on tomato in Great Britain. Samples of P. infestans were collected from tomato crops throughout Great Britain, and genotyped using an 11 SSR marker set adapted from that published by Li et al. (2013). Significant differences were observed b...
Article
Altering root morphology of rice (Oryza sativa L.) cultivars could improve yields in drought-prone upland ecosystems. Marker-assisted backcross breeding was used to introgress four QTLs for root traits into an upland rice cultivar. The QTLs had previously been identified under experimental conditions in a different genetic background. The introgres...
Article
Full-text available
Abstract · Tomato yellow leaf curl is prevalent in tomato growing districts of Uganda. The disease is known to be spread by a whitefly (Bemisia tabaci) in a persistent manner. Some of its symptoms are leaf curl, marginal leaf yellowing, malformation of fruits, stunting and dieback (in case of primary infection at early seedling stage), so the disea...
Article
Full-text available
(1,3:1,4)-β-d-Glucan is an important bioactive that contributes to the ability of barley foods to help prevent type-2 diabetes. Realisation of these benefits requires understanding of genotype and environment effects on β-glucan concentration and how this variation affects biological activity of barley foods. Field experiments showed genetic variat...
Article
In this study, Tomato Leaf Curl Disease symptom-bearing samples were collected from dry savannah (Eastern and Northern) and wet equatorial/tall grass savannah (Central and Western) agro-climatic zones of Uganda. Their total DNA was extracted using a modifi ed Dellaporta protocol. Virus DNA was amplifi ed with fi ve diff erent primer pairs for Tomat...
Article
Full-text available
Naked (hulless) barley was neglected by plant breeders in Europe during the period of intensive crop improvement in the 20th Century, but it is now receiving renewed interest due to the potential health benefits it can convey. Very few naked barley cultivars have been developed for modern UK or European agricultural systems, in contrast to the wide...
Article
Thaumatococcus daniellii is a perennial African wild edible plant. Fruit arils from natural populations are the source of the protein sweetener, thaumatin. There are relatively few documented examples of its cultivation, however it has great potential as an intercrop for cultivation under rubber or cocoa. Across the species range there is notable d...
Article
Full-text available
Rice varieties Co39 and Moroberekan differ for leaf Na+ concentrations when grown at moderate salinity (100-150molm-3 NaCl; 10:1 or 20:1 Na+ to Ca2+ ratio). Recombinant inbred lines (RILs) from a cross between them were used to map quantitative trait loci (QTL) under salt stress over several weeks. Two experiments (conducted with 170 and 96 RILs, a...
Article
Full-text available
We surveyed the uptake of three modern rice varieties by farmers in high-altitude villages in the Kaski district of Nepal and found that their uptake had displaced some traditional landraces in the district. The three varieties, Machhapuchhre-3 (M-3), Machhapuchhre-9 (M-9) and Lumle 2, were developed using client-oriented, participatory plant breed...
Article
Full-text available
Using cereal crops as examples, we review the breeding for tolerance to the abiotic stresses of low nitrogen, drought, salinity and aluminium toxicity. All are already important abiotic stress factors that cause large and widespread yield reductions. Drought will increase in importance with climate change, the area of irrigated land that is saliniz...
Article
Deep rooting can be inhibited by strong layers, although there is evidence for species and cultivar (cv.) differences in their penetration ability. Here, the availability of near-isogenic lines (NILs) in rice (Oryza sativa L.) was exploited to test the hypothesis that increased root diameter is associated with greater root bending stiffness, which...
Article
Full-text available
A mapping population of 120 recombinant inbred lines (RILs) derived from the cross between Co39 (lowland, Indica) and Moroberekan (upland, Japonica) rice (Oryza sativa L.) cultivars was used to map QTLs associated with shoot growth traits under salinity on all chromosomes of rice. The dilution of salt concentration in shoot tissues by higher vegeta...
Article
Full-text available
Using cereal crops as examples, we review the breeding for tolerance to the abiotic stresses of low nitrogen, drought, salinity and aluminium toxicity. All are already important abiotic stress factors that cause large and widespread yield reductions. Drought will increase in importance with climate change, the area of irrigated land that is saliniz...
Article
Two alternative PCR-based marker systems were tested for polymorphism in a set of fragrant and non-fragrant rice (Oryza sativa L.) varieties. Markers based on InDels (sequences with an insertion/deletion) gave reliable polymorphisms that split Basmatis and other varieties into different groups, however, markers based on Rim2/Hipa transposons were l...
Article
A marker-assisted back-cross (MABC) programme was used to introgress four root quantitative trait loci (QTLs) from the tropical japonica rice variety Azucena into the Indian upland rice variety, Kalinga III. Previously we tested the products for root traits and reported that the introgressed QTL9 (on chromosome 9) significantly increased root lengt...
Article
Full-text available
We compared intra-varietal variation of two rice varieties (Ashoka 200F and Ashoka 900F) produced by a very simple bulk breeding method (mass selection with no line selection at any stage) with one line-selected variety (Ashoka 228), all derived from the same cross. Their parents, the upland variety Kalinga III and the irrigated transplanted medium...
Conference Paper
A doubled haploid wheat mapping population KTDH (Kharchia 65 X TW161) was used to map QTLs for yield under salt stress. A flood bench experiment with six replications at 200 mM NaCl salt stress was conducted to record the different yield components and yield of the parents as well as the 99 lines of the progeny. There was a significant difference b...
Article
Nepal has a wide diversity of rice landraces in all rice-growing areas from low to high altitude. A baseline survey in Jumla, a high-altitude site (2200–3000 m), identified rice landraces with different names that differed in phenotype and were adapted to the extreme high-altitude environment. Jumli Marshi was the most common traditional rice varie...
Article
Full-text available
A marker-assisted back-crossing (MABC) breeding programme was conducted to improve the root morphological traits, and thereby drought tolerance, of the Indian upland rice variety, Kalinga III. This variety, the recurrent parent in the MABC, had not previously been used for quantitative trait locus (QTL) mapping. The donor parent was Azucena, an upl...
Article
Conventional methods for quantitative trait locus (QTL) mapping require the selection of particular traits to be measured based on assumptions as to their importance. We have tested an alternative approach for the location of QTLs-marker-evaluated selection-that makes no prior assumptions as to which traits are important. The results of phenotype s...
Conference Paper
http://repository.cimmyt.org/xmlui/bitstream/handle/10883/589/79712.pdf?sequence=1
Article
Root morphological characteristics are known to be important in the drought resistance of some rice (Oryza sativa L.) varieties. As part of a research programme aimed at using molecular marker technology for the improvement of drought resistance in rice, it is necessary to identify quantitative trait loci (QTLs) associated with root morphology and...
Article
Root morphological characteristics are known to be important in the drought resistance of some rice (Oryza sativa L.) varieties. The identification of quantitative trait loci (QTLs) associated with root morphology and other drought resistance-related traits should help breeders produce more drought resistant varieties. Stability in the expression o...
Article
Root morphological characteristics are known to be important in the drought resistance of some rice (Oryza sativa L.) varieties. The identification of quantitative trait loci (QTLs) associated with root morphology and other drought resistance-related traits should help breeders produce more drought resistant varieties. Stability in the expression o...
Article
Full-text available
Summary Participatory plant breeding (PPB) should not preclude the use of modern biotechnological techniques. We have tested whether the two approaches can be effectively combined to enhance one of the advantages of PPB - selection in the target environment that can give improved adaptation to stress conditions. Marker-assisted selection (MAS) can...
Article
Since its initial detection in Australia in 1979, wheat yellow (stripe) rust (Puccinia striiformis f.sp. tritici) has evolved in Australia and New Zealand into more than 20 pathotypes with assorted virulence characteristics. This evolution is believed to have occurred in a stepwise fashion from an original single pathotype, with no subsequent new i...
Article
Acombined RFLP and AFLP linkage map of an F6 recombinant inbred population, which was derived from a previously mapped F2 of a cross between the two drought resistant upland rice varieties Bala and Azucena, is presented. The map contains 101 RFLP and 34 AFLP markers on 17 linkage groups covering 1680 cM. Also presented is the approximate mapping po...
Chapter
Although enormous effort has been put into conventional breeding programmes for both drought and salt tolerance, there has been little progress in producing varieties that are adopted by farmers in their fields. This is largely due to the lack of consideration given to the specific needs of farmers in droughted and salt-affected environments, in pa...

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