Mutation and sequencing-based cloning and functional studies of a rust resistance gene in sunflower (Helianthus annuus).

Rust, caused by the fungus Puccinia helianthi Schwein., is one of the most devastating diseases of sunflower (Helianthus annuus L.), affecting global production.

Genetic Insight into Disease Resistance Gene Clusters by Using Sequencing-Based Fine Mapping in Sunflower ( L.).

Rust and downy mildew (DM) are two important sunflower diseases that lead to significant yield losses globally. The use of resistant hybrids to control rust and DM in sunflower has a long history. The rust resistance genes, and , were previously mapped to a 3.

Map and sequence-based chromosome walking towards cloning of the male fertility restoration gene Rf5 linked to R in sunflower.

The nuclear fertility restorer gene Rf5 in HA-R9, originating from the wild sunflower species Helianthus annuus, is able to restore the widely used PET1 cytoplasmic male sterility in sunflowers. Previous mapping placed Rf5 at an interval of 5.8 cM on sunflower chromosome 13, distal to a rust resistance gene R at a 1.

High-Density Mapping and Candidate Gene Analysis of and in Sunflower by Whole-Genome Resequencing.

Downy mildew (DM) is one of the severe biotic threats to sunflower production worldwide. The inciting pathogen, could overwinter in the field for years, creating a persistent threat to sunflower. The dominant genes and conferring resistance to known DM races have been previously mapped to 1.

Genetic Dissection of Phomopsis Stem Canker Resistance in Cultivated Sunflower Using High Density SNP Linkage Map.

Phomopsis stem canker (PSC) caused by is increasingly becoming a global threat for sunflower production. In this study, the genetic basis of PSC resistance was investigated in a recombinant inbred line (RIL) population developed from a cross between HA 89 (susceptible) and HA-R3 (resistant). The RIL population was evaluated for PSC disease incidence (DI) in seven screening trials at multiple locations during 2016-2018.

Marker-Assisted Gene Pyramiding and the Reliability of Using SNP Markers Located in the Recombination Suppressed Regions of Sunflower ( L.).

Rust caused by the fungus and downy mildew (DM) caused by the obligate pathogen are two of the most globally important sunflower diseases. Resistance to rust and DM is controlled by race-specific single dominant genes. The present study aimed at pyramiding rust resistance genes combined with a DM resistance gene, using molecular markers.

Molecular dissection of resistance gene cluster and candidate gene identification of Pl and Pl in sunflower by whole-genome resequencing.

Sunflower (Helianthus annuus L.) production is challenged by different biotic and abiotic stresses, among which downy mildew (DM) is a severe biotic stress that is detrimental to sunflower yield and quality in many sunflower-growing regions worldwide. Resistance against its infestation in sunflower is commonly regulated by single dominant genes.

Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics.

Although various photonic devices inspired by natural materials have been developed, there is no research focusing on multibands adaptability, which is not conducive to the advancement of materials science. Herein, inspired by the moth eye surface model, state-of-the-art hierarchical metamaterials (MMs) used as tunable devices in multispectral electromagnetic-waves (EMWs) frequency range, from microwave to ultraviolet (UV), are designed and prepared. Experimentally, the robust broad bandwidth of microwave absorption greater than 90% (reflection loss (RL) < -10 dB) covering almost entire X and Ku bands (8.

Linkage Mapping and Genome-Wide Association Studies of the Gene Cluster in Sunflower ( L.) and Their Distribution in World Sunflower Collections.

Commercial hybrid seed production in sunflower currently relies on a single cytoplasmic male sterility (CMS) source, PET1 and the major fertility restoration gene, , leaving the crop highly vulnerable to issues with genetic bottlenecks. Therefore, having multiple CMS/ systems is important for sustainable sunflower production. Here, we report the identification of a new fertility restoration gene, , which is tightly linked to a new downy mildew (DM) resistance gene, , in the USDA sunflower inbred line, RHA 428.

Cloning and characterization of the homoeologous genes for the Rec8-like meiotic cohesin in polyploid wheat.

Background: Meiosis is a specialized cell division critical for gamete production in the sexual reproduction of eukaryotes. It ensures genome integrity and generates genetic variability as well. The Rec8-like cohesin is a cohesion protein essential for orderly chromosome segregation in meiotic cell division.

A new mechanism for improving electromagnetic properties based on tunable crystallographic structures of FeCoNiSi Al high entropy alloy powders.

Mechanical grinding method was employed to prepare FeCoNiSi Al high entropy alloy powders, which present a simple solid solution structure (FCC and BCC). After annealing at 673 K, a large amount of BCC phase precipitate and a small amount of CoFeO phase generate. The change of crystal structure may lead to an increase in (from 100.

Molecular cytogenetic and genomic analyses reveal new insights into the origin of the wheat B genome.

This work pinpointed the goatgrass chromosomal segment in the wheat B genome using modern cytogenetic and genomic technologies, and provided novel insights into the origin of the wheat B genome. Wheat is a typical allopolyploid with three homoeologous subgenomes (A, B, and D). The donors of the subgenomes A and D had been identified, but not for the subgenome B.

SNP Discovery and QTL Mapping of Sclerotinia Basal Stalk Rot Resistance in Sunflower using Genotyping-by-Sequencing.

Basal stalk rot (BSR), caused by the ascomycete fungus (Lib.) de Bary, is a serious disease of sunflower ( L.) in the cool and humid production areas of the world.

Combination use of platelets and recombinant activated factor VII for increased hemostasis during acute type a dissection operations.

Background: Refractory blood loss is a common problem in surgeries for acute type A aortic dissections. Significant evidence has supported the benefit of using recombinant activated factor VII (rFVIIa) to control of intractable bleeding in patients after cardiac surgery. In this prospective clinical study, we present a novel method to achieve intraoperative hemostasis by using a combination of platelets and rFVIIa during operations for acute type A aortic dissections.

Cloning and characterization of cotton GhBG gene encoding beta-glucosidase.

Beta-1,4-glucosidase (BG, EC3.2.1.