A5067245663- Plant-Microbe Interactions and Immunity
- Legume Nitrogen Fixing Symbiosis
- Plant nutrient uptake and metabolism
- Plant responses to water stress
- Rice Cultivation and Yield Improvement
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Nematode management and characterization studies
- Genetic Mapping and Diversity in Plants and Animals
- Agriculture, Soil, Plant Science
Tohoku University
2010-2022
Significance Genetically improving the root system architectures of plants is an effective strategy for developing climate-resilient crops. In this study, we revealed that a cloned rice quantitative trait locus associated with growth angle, qSOR1 , DRO1 homolog involved in gravitropic responses. The loss-of-function allele qsor1 resulted roots developed on soil surface and enabled to avoid reducing stress found saline paddy soils and, consequently, increased yields. We show homologs could be...
We analyzed a metagenome of the bacterial community associated with taproot sugar beet (Beta vulgaris L.) in order to investigate genes involved plant growth-promoting traits (PGPTs), namely 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, indole acetic (IAA), N2 fixation, phosphate solubilization, pyrroloquinoline quinone, siderophores, and disease suppression as well methanol, sucrose, betaine utilization. The most frequently detected gene among PGPT categories encoded...
Abstract Twenty rice cultivars, including three genetically-distinct groups (japonica, indica-1, and indica-2), were evaluated for their response to inoculation with Azospirillum sp. strain B510 in paddy fields standard nitrogen (SN) low (LN) fertilization. In the SN field, tiller numbers most indica-2 37 days after transplanting (DAT), significantly increased by inoculation, whereas those 4 japonica cultivars decreased. A similar growth was observed LN although impacts of more varied than...
Rice seedlings were inoculated with Azospirillum sp. B510 and transplanted into a paddy field. Growth in terms of tiller numbers shoot length was significantly increased by inoculation. Principal-coordinates analysis rice bacterial communities using the 16S rRNA gene showed no overall change from However, abundance Veillonellaceae Aurantimonas base shoots, respectively, B510-inoculated plants. The did not differ between uninoculated plants (0.02–0.50%). These results indicate that...
Abstract Background Root system architecture is an important trait affecting the uptake of nutrients and water by crops. Shallower root systems preferentially take up from topsoil help avoid unfavorable environments in deeper soil layers. We have found a soil-surface rooting mutant M 2 population that was regenerated seed calli japonica rice cultivar, Nipponbare. In this study, we examined genetic physiological characteristics mutant. Results The primary roots showed no gravitropic response...
Azospirillum sp. strain B510 has been known as the plant growth-promoting endophyte; however, growth-promotion effect is dependent on genotype. Here, we aimed to identify quantitative trait loci (QTL) related primary root length in rice at seedling stage a response inoculation with B510. The of "Nipponbare" was significantly reduced by B510, whereas that "Kasalath" not affected. Thus, examined 98 backcrossed inbred lines and four chromosome segment substitution (CSSL) derived from cross...
Soil-surface roots (SORs) in rice are primary that elongate over or near the soil surface. SORs help avoid excessive reduction of stress occurs paddy, such as saline conditions. may also be beneficial for growth phosphorus-deficient paddy fields. Thus, SOR is a useful trait crop adaptation to certain environmental stresses. To identify promising genetic material showing SOR, we established methods evaluating under different We introduced procedures evaluate diversity various stages and...