Evolutionary agriculture domestication of wild emmer wheat

Peng, Junhua; Li, Yong; Liu, Xionglun; Yan, Jun; Sun, Dongfa; Nevo, Eviatar

doi:10.1016/b978-0-323-90752-1.00007-9

Cited by 5 publications

(2 citation statements)

References 252 publications

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“…For decades, actual potential and genetic resources of wild emmer for wheat breeding have been a subject of numerous studies. The gene pool of T. dicoccoides is recognized as a useful reservoir of valuable genetic material for various agronomically important quantitative and qualitative traits such as earliness, yield, the amount and desirable composition of grain protein, tolerance to abiotic stressors, and resistance to fungal diseases and wheat mosaic virus, and underlies much of the variation in morphological traits (reviewed in [ 11 , 12 , 13 , 14 ]). Despite its highly promising potential to improve the narrow gene pool of modern wheat cultivars, wild emmer has not been very widely and fully exploited in wheat breeding and improvement.…”

Section: Introductionmentioning

confidence: 99%

A Transcriptome Response of Bread Wheat (Triticum aestivum L.) to a 5B Chromosome Substitution from Wild Emmer

Muterko,

Kiseleva,

Salina

2024

Plants

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Over the years, alien chromosome substitution has attracted the attention of geneticists and breeders as a rich source of remarkable genetic diversity for improvement in narrowly adapted wheat cultivars. One of the problems encountered along this way is the coadaptation and realization of the genome of common wheat against the background of the introduced genes. Here, using RNA-Seq, we assessed a transcriptome response of hexaploid wheat Triticum aestivum L. (cultivar Chinese Spring) to a 5B chromosome substitution with its homolog from wild emmer (tetraploid wheat T. dicoccoides Koern) and discuss how complete the physiological compensation for this alien chromatin introgression is. The main signature of the transcriptome in the substituted line was a sharp significant drop of activity before the beginning of the photoperiod with a gradual increase up to overexpression in the middle of the night. The differential expression altered almost all biological processes and pathways tested. Because in most cases, the differential expression or its fold change were modest, and this was only a small proportion of the expressed transcriptome, the physiological compensation of the 5B chromosome substitution in common wheat seemed overall satisfactory, albeit not completely. No over- or under-representation of differential gene expression was found in specific chromosomes, implying that local structural changes in the genome can trigger a global transcriptome response.

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Section: Introductionmentioning

confidence: 99%

A Transcriptome Response of Bread Wheat (Triticum aestivum L.) to a 5B Chromosome Substitution from Wild Emmer

Muterko,

Kiseleva,

Salina

2024

Plants

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“…Wheat ( Triticum aestivum L.) is one of the world's most‐grown cereal crops and occupies 17% of cultivated fields (Laino et al., 2015; Peng et al., 2021). Wheat provides 35% of staple food to the world population (Laino et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

Developing eco‐friendly endophytic bioinoculants for enhancing productivity and soil fertility in wheat

et al. 2023

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The main aim of this study was to explore the potential role of wheat endophytic bacteria on wheat (Triticum aestivum L.) production and soil health management under pot and field trials. Seven plant growth-promoting putative endophytes were isolated from different wheat plant parts (root, shoot, leaf, and seed). We selected two effective bacterial strains, Pseudomonas sp. BHUJPV-WRO5 (from the "Pseudomonas koreensis" subgroup) originating from the root and Staphylococcus sp. BHUJPV-WLE7 isolated from leaf, based on plant growth-promoting traits like indole-3-acetic acid, ammonia, siderophore production, and phosphate solubilization. We conducted pot and field experiments with treatments T1 (uninoculated), T2 (Pseudomonas sp.), and T3 (Staphylococcus sp.). In pots, grain yield was higher with Pseudomonas sp. or S. xylosus than in the control. Similarly, grain yield in the field was increased with Pseudomonas sp. BHUJPV-WRO5 or Staphylococcus sp. BHUJPV-WLE7 compared with control. Pseudomonas sp. BHUJPV-WRO5 also resulted in higher soil electrical conductivity (both pot and field), total organic carbon (in field), soil contents in available N, P, and K (in pot and field), and potential activity in soil of alkaline phosphatase (pot and field), dehydrogenase and β-glucosidase (in pot). The effects of Staphylococcus sp. BHUJPV-WLE7 were smaller, with however, higher soil levels for electrical conductivity (in pot), total organic carbon (in field), available P (in pot and field), and higher potential activity of alkaline phosphatase (in pot) than control. Overall, the putative wheat endophytes effectively enhanced plant growth, crop productivity, and soil quality, and Pseudomonas stain is promising as a bio-inoculant for sustainable wheat production. INTRODUCTIONWheat (Triticum aestivum L.) is one of the world's mostgrown cereal crops and occupies 17% of cultivated fields

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A new wild emmer wheat panel allows to map new loci associated with resistance to stem rust at seedling stage

Mastrangelo,

Roncallo,

Matny

et al. 2023

The Plant Genome

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Wheat stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is a major wheat disease worldwide. A collection of 283 wild emmer wheat [Triticum turgidum L. subsp. dicoccoides (Körn. ex Asch. & Graebn.) Thell] accessions, representative of the entire Fertile Crescent region where wild emmer naturally occurs, was assembled, genotyped, and characterized for population structure, genetic diversity, and rate of linkage disequilibrium (LD) decay. Then, the collection was employed for mapping Pgt resistance genes, as a proof of concept of the effectiveness of genome‐wide association studies in wild emmer. The collection was evaluated in controlled conditions for reaction to six common Pgt pathotypes (TPMKC, TTTTF, JRCQC, TRTTF, TTKSK/Ug99, and TKTTF). Most resistant accessions originated from the Southern Levant wild emmer lineage, with some showing a resistance reaction toward three to six tested races. Association analysis was conducted considering a 12K polymorphic single‐nucleotide polymorphisms dataset, kinship relatedness between accessions, and population structure. Eleven significant marker–trait associations (MTA) were identified across the genome, which explained from 17% to up to 49% of phenotypic variance with an average 1.5 additive effect (based on the 1–9 scoring scale). The identified loci were either effective against single or multiple races. Some MTAs colocalized with known Pgt resistance genes, while others represent novel resistance loci useful for durum and bread wheat prebreeding. Candidate genes with an annotated function related to plant response to pathogens were identified at the regions linked to the resistance and defined according to the estimated small LD (about 126 kb), as typical of wild species.

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Evolutionary agriculture domestication of wild emmer wheat

Cited by 5 publications

References 252 publications

A Transcriptome Response of Bread Wheat (Triticum aestivum L.) to a 5B Chromosome Substitution from Wild Emmer

A Transcriptome Response of Bread Wheat (Triticum aestivum L.) to a 5B Chromosome Substitution from Wild Emmer

Developing eco‐friendly endophytic bioinoculants for enhancing productivity and soil fertility in wheat

A new wild emmer wheat panel allows to map new loci associated with resistance to stem rust at seedling stage

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