SSR analysis of introgression of drought tolerance from the genome of Hordeum spontaneum into cultivated barley (Hordeum vulgare ssp vulgare)

Lakew, Berhane; Henry, Robert J.; Eglinton, J.; Baum, Michaël; Ceccarelli, Salvatore; Grando, S.

doi:10.1007/s10681-012-0795-9

Cited by 20 publications

(14 citation statements)

References 28 publications

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“…the wild progenitor of cultivated barley is found in large populations in the wild (Figure a). Traits that have been identified in or sourced from wild barley ( H. spontaneum ) include Fusarium (crown rot) resistance (Chen et al ., ), selenium concentration (Jun et al ., ), grain hardness (Li et al ., ), sodium accumulation (Shavrukov et al ., ), leaf stripe resistance gene (Biselli et al ., ), stress environments (Ceccarelli, ; Lakew et al ., , ), resistance to powdery mildew and leaf rust (Schmalenbach et al ., ), agronomic traits under postanthesis drought (Kalladan et al ., ), resistance to leaf scald (Friedt et al ., ), salt tolerance (Pakniyat and Namayandeh, ), accumulation of hordatines (Batchu et al ., ) andexotic QTL alleles (Korff et al ., ). Another wild barley species ( Hordeum bulbosum ) has also been used for leaf rust and powdery mildew resistance (Pickering et al ., ), resistance to scald (Pickering et al ., ) and abiotic stress tolerances (Morrell and Clegg, ).…”

Section: Applications Of Cwrsmentioning

confidence: 99%

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Brożyńska

Furtado

Henry

2015

Plant Biotechnology Journal

334

216

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Summary Plant breeders require access to new genetic diversity to satisfy the demands of a growing human population for more food that can be produced in a variable or changing climate and to deliver the high‐quality food with nutritional and health benefits demanded by consumers. The close relatives of domesticated plants, crop wild relatives (CWRs), represent a practical gene pool for use by plant breeders. Genomics of CWR generates data that support the use of CWR to expand the genetic diversity of crop plants. Advances in DNA sequencing technology are enabling the efficient sequencing of CWR and their increased use in crop improvement. As the sequencing of genomes of major crop species is completed, attention has shifted to analysis of the wider gene pool of major crops including CWR. A combination of de novo sequencing and resequencing is required to efficiently explore useful genetic variation in CWR. Analysis of the nuclear genome, transcriptome and maternal (chloroplast and mitochondrial) genome of CWR is facilitating their use in crop improvement. Genome analysis results in discovery of useful alleles in CWR and identification of regions of the genome in which diversity has been lost in domestication bottlenecks. Targeting of high priority CWR for sequencing will maximize the contribution of genome sequencing of CWR. Coordination of global efforts to apply genomics has the potential to accelerate access to and conservation of the biodiversity essential to the sustainability of agriculture and food production.

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Section: Applications Of Cwrsmentioning

confidence: 99%

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Brożyńska

Furtado

Henry

2015

Plant Biotechnology Journal

334

216

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“…The potential risk of losing precious genetic alleles should be balanced by using presumably adaptive novelties, which were derived from climate change during 1980–2008 (Nevo et al ., ), in breeding programs for earliness and drought resistance. Wild barley has proved to be a useful source of drought tolerance that can be transferred to domesticated barley with marker‐assisted selection (Lakew et al ., , ).…”

Section: Wild Crop Relativesmentioning

confidence: 99%

Exploring natural selection to guide breeding for agriculture

Henry

Nevo

2014

Plant Biotechnology Journal

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Summary Climate change threatens reduced crop production and poses major challenges to food security. The breeding of climate‐resilient crop varieties is increasingly urgent. Wild plant populations evolve to cope with changes in their environment due to the forces of natural selection. This adaptation may be followed over time in populations at the same site or explored by examining differences between populations growing in different environments or across an environmental gradient. Survival in the wild has important differences to the objective of agriculture to maximize crop yields. However, understanding the nature of adaptation in wild populations at the whole genome level may suggest strategies for crop breeding to deliver agricultural production with more resilience to climate variability.

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“…H. spontaneum is a valuable source of new genes for breeding. These include, grain protein content (Jaradat 1991), resistance to powdery mildew (Dreiseitl and Dinoor 2004), earliness (Korff et al 2004;Li et al 2005), biomass (Lu et al 1999), plant height under drought (Baum et al 2003), drought tolerance (Baum et al 2003;Korff et al 2004;Hübner et al 2009;Shakhatreh et al 2010;Lakew et al 2013), cold tolerance Crosatti et al 1996), deep-seeding tolerance and fast emergence of seedlings from deep seeded conditions (Takahashi et al 2001).…”

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confidence: 99%

Assessment of genetic diversity among Jordanian wild barley (Hordeum spontaneum) genotypes revealed by SSR markers

Shakhatreh

Baum²,

Haddad³

et al. 2015

Genet Resour Crop Evol

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Wild barley, Hordeum spontaneum is the progenitor of cultivated barley. The center of diversity is in the Fertile Crescent in the Near East, where wild barley grows under a wide range of environmental and climatic conditions. Jordan wild barley is expected to harbor important genes that could be used for the improvement of the cultivated varieties especially in their tolerance to drought. To assess genetic diversity and allelic variation of Jordanian wild barley, 103 wild barley genotypes collected from different parts of Jordan along with 29 cultivated barley genotypes were analyzed for diversity by means of Simple Sequence Repeats (SSR). The spontaneum genotypes were grouped into six populations according to their longitude, latitude, altitude, and rainfall zone of the sites from where they have been collected, and the cultivated in one population. All barley genotypes were analyzed with 11 SSR markers with known sequences and chromosomal locations. The 11 microsatellite markers revealed 237 alleles, with an average of 21.5 alleles per locus. In spontaneum genotypes, 209 alleles were identified with an average of 19 alleles per locus, whereas, cultivated genotypes had 95 alleles with an average of 8.6 alleles per locus. Moreover, 52 alleles were identified in spontaneum (22 %) of the total alleles and 22 alleles in cultivated barley (9 %). The level of genetic diversity was very high; in fact, mean in total gene diversity (Ht) was 0.86 ranging from 0.72 to 0.94. Average gene diversity (H) was 0.79 ranging from 0.74 to 0.82. Genetic variation within population was much higher than among populations at molecular levels: this was also supported by the finding that morphological characters such as awn length, plant height, days to maturity, peduncle length, peduncle extrusion and tillering number, showed higher variation within populations than among populations. Clustering of populations was according to their ecological geographical pattern.

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SSR analysis of introgression of drought tolerance from the genome of Hordeum spontaneum into cultivated barley (Hordeum vulgare ssp vulgare)

Cited by 20 publications

References 28 publications

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Exploring natural selection to guide breeding for agriculture

Assessment of genetic diversity among Jordanian wild barley (Hordeum spontaneum) genotypes revealed by SSR markers

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