A5053048548- Wheat and Barley Genetics and Pathology
- Genetic Mapping and Diversity in Plants and Animals
- Plant Molecular Biology Research
- Bioenergy crop production and management
- Plant Reproductive Biology
- Plant Disease Resistance and Genetics
- Plant nutrient uptake and metabolism
- Crop Yield and Soil Fertility
- Plant tissue culture and regeneration
- Plant Surface Properties and Treatments
- Animal Genetics and Reproduction
- Yeasts and Rust Fungi Studies
- Postharvest Quality and Shelf Life Management
- Chromosomal and Genetic Variations
- Plant Pathogens and Resistance
- Plant Disease Management Techniques
- ATP Synthase and ATPases Research
- Genetically Modified Organisms Research
- Plant pathogens and resistance mechanisms
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Nuts composition and effects
- Rice Cultivation and Yield Improvement
- Yersinia bacterium, plague, ectoparasites research
- Escherichia coli research studies
- Mitochondrial Function and Pathology
Institute of Agrobiological Sciences
2011-2024
Tottori University
2017-2024
Leibniz Institute of Plant Genetics and Crop Plant Research
2015-2021
Yokohama City University
2014-2015
Kihara Institute for Biological Research
2014-2015
Chiba University
2011-2013
Saitama Institute of Technology
2009
Floret fertility is a key determinant of the number grains per inflorescence in cereals. During evolution wheat (Triticum sp.), floret has increased, such that current bread aestivum) cultivars set three to five spikelet. However, little known regarding genetic basis fertility. The locus Grain Number Increase 1 (GNI1) shown here be an important contributor GNI1 evolved Triticeae through gene duplication. gene, which encodes homeodomain leucine zipper class I (HD-Zip I) transcription factor,...
Inflorescence architecture of barley ( Hordeum vulgare L.) is common among the Triticeae species, which bear one to three single-flowered spikelets at each rachis internode. Triple spikelet meristem unique features spikes, in (one central and two lateral spikelets) are produced Fertility triple gives row-type identity spikes. Six-rowed spikes show fertile produce increased grain yield per spike, compared with two-rowed sterile spikelets. Thus, far, loci governing phenotype were isolated that...
Land plants have developed a cuticle preventing uncontrolled water loss. Here we report that an ATP-binding cassette (ABC) subfamily G (ABCG) full transporter is required for leaf conservation in both wild barley and rice. A spontaneous mutation, eibi1.b, has low capacity to retain water, phenotype associated with reduced cutin deposition thin cuticle. Map-based cloning revealed Eibi1 encodes HvABCG31 transporter. The gene was highly expressed the elongation zone of growing (the site...
Abstract Inflorescences of the tribe Triticeae, which includes wheat (Triticum sp. L.) and barley (Hordeum vulgare are characterized by sessile spikelets directly borne on main axis, thus forming a branchless spike. ‘Compositum-Barley’ tetraploid ‘Miracle-Wheat’ (T. turgidum convar. compositum (L.f.) Filat.) display noncanonical spike-branching in replaced lateral branch-like structures resembling small-sized secondary spikes. As result this branch formation produces significantly more...
Summary Barley ( H ordeum vulgare ) spikes are developmentally switched from two‐rowed to six‐rowed by a single recessive gene, spike 1 vrs1 ), which encodes homeodomain‐leucine zipper I class transcription factor. Vrs1 is paralog of HvHox2 and both were generated duplication an ancestral gene. conserved among cereals, whereas acquired its current function during the evolution barley. It was unclear whether divergence expression pattern or protein accounted for functionalization . Here, we...
Einkorn and emmer wheat together with barley were among the first cereals domesticated by humans more than 10,000 years ago, long before durum or bread originated. Domesticated einkorn differs from its wild progenitor in basic morphological characters such as grain dispersal system. This study identified Non-brittle rachis 1 (btr1) 2 (btr2) homologous to barley. Re-sequencing of Btr1 Btr2 a collection 53 lines showed that single non-synonymous amino acid substitution (alanine threonine) at...
Pangenomes are collections of annotated genome sequences multiple individuals a species
Pangenomes are collections of annotated genome sequences multiple individuals a species. The structural variants uncovered by these datasets major asset to genetic analysis in crop plants. Here, we report pangenome barley comprising long-read sequence assemblies 76 wild and domesticated genomes short-read data 1,315 genotypes. An expanded catalogue variation the includes structurally complex loci that have become hot spots gene copy number evolutionarily recent times. To demonstrate utility...
Increasing grain yield is an endless challenge for cereal crop breeding. In barley (Hordeum vulgare), number controlled mainly by Six-rowed spike 1 (Vrs1), which encodes a homeodomain leucine zipper class I transcription factor. However, little known about the genetic basis of size. Here, we show that extreme suppression lateral florets contributes to enlarged grains in deficiens barley. Through combination fine-mapping and resequencing mutants, have identified single amino acid substitution...
Three spikelets are formed at each rachis node of the cultivated barley (Hordeum vulgare ssp. vulgare) spike. In two-rowed barley, central one is fertile and two lateral ones sterile, whereas in six-rowed type, all three fertile. This characteristic determined by allelic constitution spike 1 (vrs1) locus on long arm chromosome 2H, with recessive allele being responsible for phenotype. The Vrs1 (HvHox1) gene encodes a homeodomain-leucine zipper (HD-Zip) transcription factor. Here, we show...
Grass inflorescences produce grains, which are directly connected to our food. In grass crops, yields mainly affected by grain number and weight; thus, understanding inflorescence shape is crucially important for cereal crop breeding. the last two decades, several key genes controlling have been elucidated, thanks availability of rich genetic resources powerful genomics tools. this review, we focus on architecture Triticeae species, including major crops wheat barley. We summarize recent...
The HD-ZIP class I transcription factor Homeobox 1 (HvHOX1), also known as Vulgare Row-type Spike (VRS1) or Six-rowed 1, regulates lateral spikelet fertility in barley (Hordeum vulgare L.). It was shown that HvHOX1 has a high expression only spikelets, while its paralog HvHOX2 found to be expressed different plant organs. Yet, the mechanistic functions of and during development are still fragmentary. Here, we show compared with HvHOX1, is more highly conserved across genotypes Hordeum...
Wild barley forms a two-rowed spike with brittle rachis whereas domesticated has two- or six-rowed spikes tough rachis. Like barley, 'agriocrithon' spike; however, the is as in wild which makes origin of agriocrithon obscure. Haplotype analysis Six-rowed 1 (vrs1) and Non-brittle (btr1) 2 (btr2) genes was conducted to infer barley. Some accessions (eu-agriocrithon) carried Btr1 Btr2 haplotypes that are not found any cultivars, implying they directly derived from through mutation at vrs1...
The bread wheat genome harbors three homoeologs of the barley gene HvAP2, which determines cleistogamous/non-cleistogamous flowering. homoeologs, TaAP2-A, TaAP2-B and TaAP2-D, are derived from A, B D genomes. importance lodicule swelling in assuring non-cleistogamous flowering a range wild domesticated accessions varying ploidy level was established. Re-sequencing AP2 homoeologous genes carried out to identify natural variation at both nucleotide polypeptide level. sequences highly conserved...
Domestication-related changes that govern a spike morphology suitable for seed harvesting in cereals have resulted from mutation and selection of the genes. A synthetic hexaploid wheat (S-6214, genome AABBDD) produced by cross between durum (AABB) wild goat grass (DD) showed partial non-domestication-related phenotypes due to genetic effects genome. Quantitative trait loci (QTLs) affecting domestication-related characters including threshability, rachis fragility compactness were...
Abstract Key message Genetic modification of spike architecture is essential for improving wheat yield. Newly identified loci the ‘Miracle wheat’ phenotype on chromosomes 1AS and 2BS have significant effects traits. The ( Triticum ssp.) inflorescence, also known as a spike, forms an unbranched inflorescence in which meristem generates axillary spikelet meristems (SMs) destined to become sessile spikelets. Previously, we putatively causative mutation branched head t bh ) gene TtBH - A1...