Roadmap for Accelerated Domestication of an Emerging Perennial Grain Crop

DeHaan, Lee R.; Larson, Steve; López‐Marqués, Rosa L.; Wenkel, Stephan; Gao, Caixia; Palmgren, Michael G.

doi:10.1016/j.tplants.2020.02.004

Cited by 80 publications

(64 citation statements)

References 86 publications

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“…Evolution in the genus Triticum and the origin of cultivated wheat [9] Genome symbols and plasma types in the wheat group [10] Cytogenetics of wheat and its close wild relatives-Triticum and Aegilops [11] Genome symbols in the Triticeae (Poaceae) [12] Phylogenetic relationships of Triticum and Aegilops and evidence for the origin of the A, B, and D genomes of common wheat (Triticum aestivum) [13] Evolution of domesticated bread wheat [14] Wheat domestication: Lessons for the future [15] Distinguishing wild and domestic wheat and barley spikelets from early Holocene sites in the Near East [16] Emergence of agriculture in the foothills of the Zagros mountains of Iran [17] On the Identification of domesticated Emmer wheat, Triticum turgidum subsp. dicoccum (Poaceae), in the Aceramic Neolithic of the Fertile Crescent [18] DArTseq-based analysis of genomic relationships among species of tribe Triticeae [19] Domestication and crop evolution of wheat and barley: Genes, genomics, and future directions [20] Bread wheat: a role model for plant domestication and breeding [21] Roadmap for accelerated domestication of an emerging perennial grain crop [22] Current progress in understanding and recovering the wheat genes lost in evolution and domestication [23] Although phylogenetic relationships among wild relatives of wheat have been extensively reviewed by many researchers e.g., [24], we report here an information flow diagram for the trend of wheat domestication (Figure 2). This diagram shows wheat's evolution process and a general viewpoint of relationships among the close relatives of common wheat, which descended from a 3 million-year-old common ancestor and gave rise to the Aegilops and Triticum taxa [25].…”

Section: Article Referencementioning

confidence: 99%

Potential of Wild Relatives of Wheat: Ideal Genetic Resources for Future Breeding Programs

et al. 2021

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Among cereal crops, wheat has been identified as a major source for human food consumption. Wheat breeders require access to new genetic diversity resources to satisfy the demands of a growing human population for more food with a high quality that can be produced in variable environmental conditions. The close relatives of domesticated wheats represent an ideal gene pool for the use of breeders. The genera Aegilops and Triticum are known as the main gene pool of domesticated wheat, including numerous species with different and interesting genomic constitutions. According to the literature, each wild relative harbors useful alleles which can induce resistance to various environmental stresses. Furthermore, progress in genetic and biotechnology sciences has provided accurate information regarding the phylogenetic relationships among species, which consequently opened avenues to reconsider the potential of each wild relative and to provide a context for how we can employ them in future breeding programs. In the present review, we have sought to represent the level of genetic diversity among the wild relatives of wheat, as well as the breeding potential of each wild species that can be used in wheat-breeding programs.

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Section: Article Referencementioning

confidence: 99%

Potential of Wild Relatives of Wheat: Ideal Genetic Resources for Future Breeding Programs

et al. 2021

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“…Plant breeding has been one fundamental strategy to meet the food demands of people through crop domestication for thousands of years (McKersie, 2015 ). Crop domestication is an evolutionary ongoing process based on rigorous screening and selection of best-performing cultivars to improve agronomic traits and better acclimatization by growing the cultivated, landraces crop wild relatives (CWRs) (DeHaan et al, 2020 ). It helps to develop new crop species or modify the domesticated crop species that can withstand different environments and give high crop yields (Purugganan, 2019 ).…”

Section: Climate Changes and Crop Domesticationmentioning

confidence: 99%

De-novo Domestication for Improving Salt Tolerance in Crops

et al. 2021

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Global agriculture production is under serious threat from rapidly increasing population and adverse climate changes. Food security is currently a huge challenge to feed 10 billion people by 2050. Crop domestication through conventional approaches is not good enough to meet the food demands and unable to fast-track the crop yields. Also, intensive breeding and rigorous selection of superior traits causes genetic erosion and eliminates stress-responsive genes, which makes crops more prone to abiotic stresses. Salt stress is one of the most prevailing abiotic stresses that poses severe damages to crop yield around the globe. Recent innovations in state-of-the-art genomics and transcriptomics technologies have paved the way to develop salinity tolerant crops. De novo domestication is one of the promising strategies to produce superior new crop genotypes through exploiting the genetic diversity of crop wild relatives (CWRs). Next-generation sequencing (NGS) technologies open new avenues to identifying the unique salt-tolerant genes from the CWRs. It has also led to the assembly of highly annotated crop pan-genomes to snapshot the full landscape of genetic diversity and recapture the huge gene repertoire of a species. The identification of novel genes alongside the emergence of cutting-edge genome editing tools for targeted manipulation renders de novo domestication a way forward for developing salt-tolerance crops. However, some risk associated with gene-edited crops causes hurdles for its adoption worldwide. Halophytes-led breeding for salinity tolerance provides an alternative strategy to identify extremely salt tolerant varieties that can be used to develop new crops to mitigate salinity stress.

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“…Such research could contribute new understanding and opportunities, particularly in well-characterized genes such as the seed dormancy gene G, which appears to have been selected in parallel during the domestication of several crops in at least three plant families (Rendón-Anaya and Herrera-Estrella, 2018). Gene editing and similar technologies may be necessary to produce effective DG alleles on a realistic timeframe for the de novo domestication of some wild plant taxa (Eshed and Lippman, 2019;DeHaan et al, 2020) and some authors recognize that novel variation must then be introduced into diverse germplasm (Lemmon et al, 2018) and "tuned" by traditional selection on standing variation of many small-effect loci (Eshed and Lippman, 2019).…”

Section: Introductionmentioning

confidence: 99%