An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Oryzasativa, etc ; Arabidopsis thaliana; cadmium; food chain; human health; multiomics; phylogeny; toxicity; Show all 8 Subjects
Abstract:
... Cadmium (Cd) is one of the most toxic heavy metals faced by plants and threatens human health through the food chain. There are many similarities across species in response to cadmium stress, yet understanding of the underlying conserved molecular mechanisms is still lacking. Here, we obtained a conserved set of genes involved in the response to Cd stress in typical monocotyledonous and dicotyledo ...
... Direct seeding of rice (Oryza sativa L.) has since long been viewed as a potential alternative to unsustainable water-intensive transplanted rice (TPR) world-over, but heavy infestation of a variety of weed species limits the large-scale adoption of direct-seeded rice (DSR) cultivation. Hence, a 2-year field investigation was carried-out in a spilt-plot design, at Banaras Hindu University, Varanas ...
Oryzasativa, etc ; cultivars; hybrids; industrialization; rice; China; Show all 6 Subjects
Abstract:
... This study determined the effect of hybrid breeding on cultivar diversity in rice (Oryza sativa L.) production in China. The results showed that hybrid breeding led to increases in the Shannon index of cultivar diversity by 29–184% during the period 2011–2015 compared with the period 1986–1990 for 10 major hybrid rice‐producing provinces in China. There was a significant exponential relationship b ...
Oryzasativa, etc ; cultivars; environment; regression analysis; rice; Louisiana; Show all 6 Subjects
Abstract:
... This analysis investigates the impact of cultivar development and cultural practices on Louisiana rice (Oryza sativa L.) yield growth using the Chow test (Chow, 1960) in combination with regression analysis. The analysis examines the 1895–2019 period, and uses four scenarios in which one, two, three, and four subperiods show varying rates of rice yield growth in Louisiana. There has been a signifi ...
Oryzasativa, etc ; Japan; amylopectin; cultivars; endosperm; rice; temperature; Show all 7 Subjects
Abstract:
... Because of global warming, the ripening period of rice (Oryza sativa L.) is becoming hotter in Japan, and there is concern that eating quality will decline as a result. Amylopectin is the largest component of rice endosperm starch and its short-chain content has a considerable effect on the eating quality of cooked rice. Here we investigated the effect of high temperature during ripening on amylop ...
Oryzasativa, etc ; canopy; models; reflectance; rice; vegetation index; Show all 6 Subjects
Abstract:
... Lodging stress influences the yield, quality, and mechanical harvesting ability of rice (Oryza sativa L.). It is of great significance for the quantitative and objective evaluation of rice yield loss to obtain the rice lodging distribution and grade information rapidly and nondestructively. The purpose of this paper was to establish a remote sensing monitoring method for the grade of rice lodging ...
Oryzasativa, etc ; Brachypodium distachyon; genes; genomics; grasses; models; Show all 6 Subjects
Abstract:
... A gene in a given taxonomic group is either present in every individual (core) or absent in at least a single individual (dispensable). Previous pangenomic studies have identified certain functional differences between core and dispensable genes. However, identifying if a gene belongs to the core or dispensable portion of the genome requires the construction of a pangenome, which involves sequenci ...
Oryzasativa, etc ; crop losses; ecotypes; environment; evolution; rice; submergence; Show all 7 Subjects
Abstract:
... During the course of evolution, different ecotypes of rice (Oryza sativa L.) have evolved distinct strategies to cope with submergence stress. Such contrasting responses are mediated by plant hormones that are principle regulators of growth, development and responses to various biotic and abiotic stresses. These hormones act cooperatively and show extensive crosstalk which is mediated by key regul ...
Oryzasativa, etc ; Arabidopsis thaliana; circular RNA; evolution; genomics; rice; Show all 6 Subjects
Abstract:
... Circular RNA (circRNA) is a kind of new regulatory RNA with diverse biological functions. Numerous circRNAs have been identified in many plant species; however, evolution of plant circRNAs remains largely unknown. In this study, we assembled full‐length sequences of 6519 rice (Oryza sativa) circRNAs and analyzed their conservation in another 46 plant species based on comparison of sequences and ex ...
Oryzasativa, etc ; agriculture; air; direct seeding; rice; static pressure; Show all 6 Subjects
Abstract:
... This paper aims to solve the problem of high reseeding rates and mis-seeding rates in the rice multi-grain hole direct seeding process. A multi grain cluster air suction type rice hill direct seed metering device was developed, and its seeding mechanism was analyzed. Based on CFD-DEM coupling simulation and bench tests, this study explored and optimized the performance of the seed metering device, ...
Oryzasativa, etc ; food fraud; rice; supply chain; Asia; Europe; Show all 6 Subjects
Abstract:
... Rice (Oryza sativa L.) is one of the most cultivated and consumed crops worldwide. It is mainly produced in Asia but, due to its large genetic pool, it has expanded to several ecosystems, latitudes and climatic conditions. Europe is a rice producing region, especially in the Mediterranean countries, that grow mostly typical japonica varieties. The European consumer interest in rice has increased o ...
Oryzasativa, etc ; endosperm; equipment; genotype; morphs; pericarp; phenotype; rice; Show all 8 Subjects
Abstract:
... Starch granules (SGs) exhibit different morphologies depending on the plant species, especially in the endosperm of the Poaceae family. Endosperm phenotyping can be used to classify genotypes based on SG morphotype using scanning electron microscopic (SEM) analysis. SGs can be visualized using SEM by slicing through the kernel (pericarp, aleurone layers, and endosperm) and exposing the organellar ...
Anowara Akter; Sheikh Arafat Islam Nihad; Md. Jamil Hasan; Lutful Hassan; Arif Hasan Khan Robin; Md. Ruhul Quddus; Anika Tabassum; Mohammad Abdul Latif
Oryzasativa, etc ; Xanthomonas oryzae pv. oryzae; blight; rice; virulence; Show all 5 Subjects
Abstract:
... Bacterial blight (BB) disease, caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the major bottlenecks of rice (Oryza sativa) production. The present study was undertaken to identify BB‐resistant parental lines of hybrid rice based on pathogenicity tests and molecular screening. Three virulent races of Xoo, i.e. BXo93, BXo822 and BXo887 were used to evaluate the 66 maintainers and 200 elite ...
Oryzasativa, etc ; agronomy; nitrogen; pretilachlor; rice; wet season; India; Show all 7 Subjects
Abstract:
... An experiment was conducted during rainy season of 2018 at Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Khudwani, Jammu and Kashmir, to study the response of ‘Shalimar Sugandh 1’ Kashmir basmati rice (Oryza sativa L.) to different nitrogen levels. Three nitrogen levels (0, 45 and 90 kg N/ha) and 5 weed-management practices, including 3 herbicides, viz. florpyrauxif ...
Oryzasativa, etc ; alleles; amylose; biogenesis; biotechnology; endosperm; microRNA; mutants; rice; Show all 9 Subjects
Abstract:
... Amylose content is a crucial physicochemical property responsible for the eating and cooking quality of rice (Oryza sativa L.) grain and is mainly controlled by the Waxy (Wx) gene. Previous studies have identified several Dull genes that modulate the expression of the Wxᵇ allele in japonica rice by affecting the splicing efficiency of the Wxᵇ pre‐mRNA. Here, we uncover dual roles for a novel Dull ...
Oryzasativa, etc ; cultivars; flooding tolerance; genes; rice; submergence; transcription (genetics); Show all 7 Subjects
Abstract:
... We screened 80 Asian rice (Oryza sativa L.) cultivars for the presence of the submergence-tolerance gene SUB1A-1 and the floating genes SNORKEL1 (SK1) and SNORKEL2 (SK2), and found that the deepwater rice cultivar Baisbish (BSB) and the submergence-tolerant cultivar Flood Resistant 13A (FR13A) both possess the SUB1A-1 and the SK1/2. When BSB and FR13A seedlings were completely submerged, spindly g ...
Oryzasativa, etc ; genomics; heading; homozygosity; photoperiod; plant height; rice; temperature; Show all 8 Subjects
Abstract:
... Heading date determines the seasonal and regional adaptation of rice (Oryza sativa L.) varieties and is mainly controlled by photoperiod sensitivity (PS). The core heading date genes Hd1, Ghd7, DTH8, and PRR37 act synergistically in regulating the PS. In this study, we systematically analyze the heading date, PS, and agronomic traits of eight homozygous lines with various combinations of Hd1, Ghd7 ...
Oryzasativa, etc ; bioinformatics; food composition; lipidomics; rice; starch; stored grain; Show all 7 Subjects
Abstract:
... In the current study, the changes of non-starch and starch lipids in two rice varieties during storage were investigated based on untargeted lipidomic approach. A total of 395 non-starch lipids and 13 starch lipids were identified in two rice varieties. 171 lipids in Nanjing and 6 lipids in Jianzhen were significantly different in stored rice compared to those in the fresh ones. Bioinformatics ana ...
Oryzasativa, etc ; Markov chain; chromatin; genome; genomics; rice; transcription factors; Show all 7 Subjects
Abstract:
... Plant genomes contain a large fraction of non-coding sequences. The discovery and annotation of conserved non-coding sequences (CNSs) in plants is an ongoing challenge. Here we report the application of comparative genomics to systematically identify CNSs in 50 well-annotated Gramineae genomes using rice (Oryza sativa) as the reference. We conduct multiple-way whole-genome alignments to the rice g ...
Oryzasativa, etc ; Curvularia; chemistry; endophytes; fungi; sesquiterpenoids; spectral analysis; spectroscopy; Show all 8 Subjects
Abstract:
... One new natural product, cadinane-type sesquiterpenoid, (±)-(2S*,3S*)-dihydroxy-α-corocalene (1), has been isolated from the endophytic fungus Curvularia intermedia, derived from the plant Oryza sativa. The structure was determined using spectroscopic methods, mainly 1D and 2D NMR, and comparison of the spectroscopic data with those reported for structurally related compounds. ...