Clubroot-Induced Changes in the Root and Rhizosphere Microbiome of Susceptible and Resistant Canola.

Clubroot is a soilborne disease of canola () and other crucifers caused by the obligate parasite . In western Canada, clubroot is usually managed by planting-resistant cultivars, but the emergence of resistance-breaking pathotypes of represents a major threat to sustainable canola production. The rhizosphere and root contain beneficial microorganisms that can improve plant health.

Diversity and Pathogenicity of Root Rot Fungi from Canola () in Alberta, Canada.

Root rot disease poses a significant threat to canola (), underscoring the need for a comprehensive understanding of its causal agents for more effective disease mitigation. The composition and diversity of fungal pathogens associated with root rot of canola in Alberta, Canada, were evaluated from plant tissue samples collected in 2021 and 2022. The study revealed spp.

Pathogenicity, Host Resistance, and Genetic Diversity of Species under Controlled Conditions from Soybean in Canada.

spp. are commonly associated with the root rot complex of soybean (). Previous surveys identified six common species from Manitoba, including , , , , , and .

Identification of Clubroot () Resistance Loci in Chinese Cabbage ( ssp. ) with Recessive Character.

The soil-borne pathogen is the causal agent of clubroot, a major disease in Chinese cabbage ( ssp. ). The host's resistance genes often confer immunity to only specific pathotypes and may be rapidly overcome.

Effect of Plasma-Activated Water Bubbles on , Deoxynivalenol, and Germination of Naturally Infected Barley during Steeping.

Contamination of barley by deoxynivalenol (DON), a mycotoxin produced by , causes considerable financial loss to the grain and malting industries. In this study, two atmospheric cold plasma (ACP) reactors were used to produce plasma-activated water (PAW) bubbles. The potential of PAW bubbles for the steeping of naturally infected barley (NIB) during the malting process was investigated.

Identification of Novel Genes Associated with Partial Resistance to Aphanomyces Root Rot in Field Pea by BSR-Seq Analysis.

Aphanomyces root rot, caused by , causes severe yield loss in field pea (). The identification of a pea germplasm resistant to this disease is an important breeding objective. Polygenetic resistance has been reported in the field pea cultivar '00-2067'.

Identification of Quantitative Trait Loci Associated With Partial Resistance to Fusarium Root Rot and Wilt Caused by in Field Pea.

Fusarium root rot, caused by a complex of spp., is a major disease of field pea (). The development of genetic resistance is the most promising approach to manage the disease, but no pea germplasm has been identified that is completely resistant to root rot.

Histopathology of the -Chinese Cabbage Interaction in Hosts Carrying Different Sources of Resistance.

Clubroot is a serious soil-borne disease of crucifers caused by the obligate parasite . The genetic basis and histopathology of clubroot resistance in two Chinese cabbage ( ssp. ) inbred lines Bap055 and Bap246, challenged with pathotype 4 of , was evaluated.

Clubroot resistance derived from the European Brassica napus cv. 'Tosca' is not effective against virulent Plasmodiophora brassicae isolates from Alberta, Canada.

In this study, clubroot resistance in the resynthesized European winter Brassica napus cv. 'Tosca' was introgressed into a Canadian spring canola line '11SR0099', which was then crossed with the clubroot susceptible spring line '12DH0001' to produce F seeds. The F plants were used to develop a doubled haploid (DH) mapping population.

Mapping QTL associated with partial resistance to Aphanomyces root rot in pea (Pisum sativum L.) using a 13.2 K SNP array and SSR markers.

A stable and major QTL, which mapped to an approximately 20.0 cM region on pea chromosome 4, was identified as the most consistent region conferring partial resistance to Aphanomyces euteiches. Aphanomyces root rot (ARR), caused by Aphanomyces euteiches Drechs.

Molecular genetic diversity and population structure analyses of rutabaga accessions from Nordic countries as revealed by single nucleotide polymorphism markers.

Background: Rutabaga or swede (Brassica napus ssp. napobrassica (L.) Hanelt) varies in root and leaf shape and colour, flesh colour, foliage growth habits, maturity date, seed quality parameters, disease resistance and other traits.

QTL Mapping and Inheritance of Clubroot Resistance Genes Derived From subsp. (ECD 02) Reveals Resistance Loci and Distorted Segregation Ratios in Two Populations of Different Crosses.

In this study, subsp. (ECD 02) which exhibits broad-spectrum resistance to many Canadian isolates was crossed with two clubroot-susceptible accessions to produce two populations. The plants were screened against pathotypes 3H, 5X, and 5G.

Genome-Wide Mapping of Loci Associated With Resistance to Clubroot in ssp. (Rutabaga) Accessions From Nordic Countries.

Rutabaga [ ssp. (L.) Hanelt] is reported to be an excellent source of clubroot () resistance genes.

Suppression of Canola () Resistance by Virulent Isolates of (Clubroot) During Primary Infection.

The planting of clubroot resistant (CR) canola () is the most effective method to manage clubroot. Since 2013, many isolates capable of overcoming resistance have been detected, often in mixtures with avirulent isolates. To improve understanding of the effect of low concentrations of virulent isolates on host resistance, three CR canola cultivars (45H29, L135C, and L241C) were inoculated with pairs of isolates representing virulent/avirulent pathotypes (2*/2, 3*/3, and 5*/5) collected after or before the introduction of CR canola, respectively.

Molecular cytogenetic identification of B genome chromosomes linked to blackleg disease resistance in Brassica napus × B. carinata interspecific hybrids.

Provide evidence that the Brassica B genome chromosome B3 carries blackleg resistance gene, and also the B genome chromosomes were inherited several generations along with B. napus chromosomes. Blackleg disease caused by fungus Leptosphaeria maculans causes significant yield losses in Brassica napus.

Development and characterization of microsatellite markers for analysis of population differentiation in the tree legume Acacia koa (Fabaceae: Mimosoideae) in the Hawaiian Islands.

The aim of this research was to develop and use microsatellite markers to characterize the high-value timber tree Acacia koa (koa), which is endemic to the Hawaiian Islands. Genomic DNA fragments of 300-1000 bp were cloned and sequenced following enrichment for microsatellite motifs by PCR using 7 oligonucleotide repeat primers in separate reactions. Among 96 sequences analyzed, 63 contained unique microsatellite motifs flanked by variable sequences.