Genome Sequences of Two Soil-Dwelling Bacteria Belonging to the Family .

Members of the family are rod-shaped betaproteobacteria found in various environments. Here, we report the genome sequences of 2 bacteria belonging to this family. They were isolated from agricultural soils located in the Montérégie region (Quebec, Canada) and display biocontrol activity against various lettuce bacterial pathogens.

Insights from the genomes of 4 diploid Camelina spp.

Plant evolution has been a complex process involving hybridization and polyploidization making understanding the origin and evolution of a plant's genome challenging even once a published genome is available. The oilseed crop, Camelina sativa (Brassicaceae), has a fully sequenced allohexaploid genome with 3 unknown ancestors. To better understand which extant species best represent the ancestral genomes that contributed to C.

Combining Desirable Traits for a Good Biocontrol Strategy against .

The fungal pathogen (Helotiales: Sclerotiniaceae) causes white mold, a disease that leads to substantial losses on a wide variety of hosts throughout the world. This economically important fungus affects yield and seed quality, and its control mostly relies on the use of environmentally damaging fungicides. This review aimed to present the latest discoveries on microorganisms and the biocontrol mechanisms used against white mold.

Competition Between Clade and Clade : A Race to Lead Grape Downy Mildew Epidemics.

There is evidence of five clades of in the world. Only two clades, and , have been identified as responsible for downy mildew epidemics in Quebec, Canada. It was reported in 2021 that epidemics caused by clade start 2 or 3 weeks before those caused by clade and that clade was more aggressive than clade .

Interplay between Genotype, Plant Growth and Rhizosphere Colonization by Phytobeneficial Phenazine-Producing .

Rhizosphere colonization by phytobeneficial Pseudomonas spp. is pivotal in triggering their positive effects on plant health. Many Pseudomonas spp.

Population genetic structure of the carrot weevil () in North America.

Population genetic studies of insect pests enhance our ability to anticipate problems in agroecosystems, such as pest outbreaks, insecticide resistance, or expansions of the host range. This study focuses on geographic distance and host plant selection as potential determinants of genetic differentiation of the carrot weevil , a major pest of several apiaceous crops in North America. To undertake genetic studies on this species, we assembled the first complete genome sequence for .

A Broad Review of Soybean Research on the Ongoing Race to Overcome Soybean Cyst Nematode.

Plant pathogens greatly impact food security of the ever-growing human population. Breeding resistant crops is one of the most sustainable strategies to overcome the negative effects of these biotic stressors. In order to efficiently breed for resistant plants, the specific plant-pathogen interactions should be understood.

Preharvest UV-C Hormesis Induces Key Genes Associated With Homeostasis, Growth and Defense in Lettuce Inoculated With pv. .

Preharvest application of hormetic doses of ultraviolet-C (UV-C) generates beneficial effects in plants. In this study, within 1 week, four UV-C treatments of 0.4 kJ/m2 were applied to 3-week-old lettuce seedlings.

Exploiting Beneficial spp. for Cannabis Production.

Among the oldest domesticated crops, cannabis plants ( L., marijuana and hemp) have been used to produce food, fiber, and drugs for thousands of years. With the ongoing legalization of cannabis in several jurisdictions worldwide, a new high-value market is emerging for the supply of marijuana and hemp products.

Complete Genome Sequences of Five Strains with Biocontrol Activity against Various Lettuce Pathogens.

Numerous bacterial strains from the Burkholderia cepacia complex display biocontrol activity. Here, we report the complete genome sequences of five strains isolated from soil. Biosynthetic gene clusters responsible for the production of antimicrobial compounds were found in the genome of these strains, which display biocontrol activity against various lettuce pathogens.

On-Farm Experimentation to transform global agriculture.

Restructuring farmer-researcher relationships and addressing complexity and uncertainty through joint exploration are at the heart of On-Farm Experimentation (OFE). OFE describes new approaches to agricultural research and innovation that are embedded in real-world farm management, and reflects new demands for decentralized and inclusive research that bridges sources of knowledge and fosters open innovation. Here we propose that OFE research could help to transform agriculture globally.

In Tuber Biocontrol of Potato Late Blight by a Collection of Phenazine-1-Carboxylic Acid-Producing spp.

Phenazine-1-carboxylic acid (PCA) produced by plant-beneficial spp. is an antibiotic with antagonistic activities against , the causal agent of potato late blight. In this study, a collection of 23 different PCA-producing spp.

Grapevine Virology in the Third-Generation Sequencing Era: From Virus Detection to Viral Epitranscriptomics.

Among all economically important plant species in the world, grapevine ( L.) is the most cultivated fruit plant. It has a significant impact on the economies of many countries through wine and fresh and dried fruit production.

Seasonal changes in the abundance and activity of bacterial and fungal denitrifying communities associated with different compost amendments.

Composts can be efficient organic amendments in potato culture as they can supply carbon and nutrients to the soil. However, more information is required on the effects of composts on denitrification and nitrous oxide emissions (NO) and emission-producing denitrifying communities. The effects of three compost amendments (municipal source separated organic waste compost (SSOC), forestry waste mixed with poultry manure compost (FPMC), and forestry residues compost (FRC)) on fungal and bacterial denitrifying communities and activity was examined in an agricultural field cropped to potatoes during the fall, spring, and summer seasons.

Toward understanding of the methoxylated flavonoid biosynthesis pathway in Dracocephalum kotschyi Boiss.

Nowadays, with the development and advancement of next-generation sequencing technologies, a new path has been provided for transcriptomic studies. In this study, the transcriptome of Dracocephalum kotschyi Boiss., as an endemic and endangered plant which is contained a large amount of valuable secondary metabolites with antioxidant and anticancer properties, was sequenced.

Comparative Genomics of Potato Common Scab-Causing spp. Displaying Varying Virulence.

Common scab of potato causes important economic losses worldwide following the development of necrotic lesions on tubers. In this study, the genomes of 14 prevalent scab-causing spp. isolated from Prince Edward Island, one of the most important Canadian potato production areas, were sequenced and annotated.

The effect of temperature on host patch exploitation by an egg parasitoid.

The effect of temperature during host patch exploitation by parasitoids remains poorly understood, despite its importance on female reproductive success. Under laboratory conditions, we explored the behaviour of Anaphes listronoti, an egg parasitoid of the carrot weevil, Listronotus oregonensis, when foraging on a host patch at five temperatures. Temperature had a strong effect on the female tendency to exploit the patch: A.

Inhibition of Three Potato Pathogens by Phenazine-Producing spp. Is Associated with Multiple Biocontrol-Related Traits.

Phenazine-producing Pseudomonas spp. are effective biocontrol agents that aggressively colonize the rhizosphere and suppress numerous plant diseases. In this study, we compared the ability of 63 plant-beneficial phenazine-producing Pseudomonas strains representative of the worldwide diversity to inhibit the growth of three major potato pathogens: the oomycete Phytophthora infestans, the Gram-positive bacterium Streptomyces scabies, and the ascomycete Verticillium dahliae.

Historical Indigenous Food Preparation Using Produce of the Three Sisters Intercropping System.

For centuries, some Indigenous Peoples of the Americas have planted corn, beans and squash or pumpkins together in mounds, in an intercropping complex known as the Three Sisters. Agriculturally, nutritionally and culturally, these three crops are complementary. This literature review aims to compile historical foods prepared from the products of the Three Sisters planting system used in Indigenous communities in the region encompassing southern Quebec and Ontario in Canada, and northeastern USA.

Anthracnose Risk Establishment Based on Age-Related Susceptibility of Grape Leaves, Flowers, and Berries to Infection by .

Anthracnose is an important disease of grapevines caused by the fungus . In recent years, there have been regular outbreaks in humid grape-growing regions around the world. Young leaves and berries are reported to be highly susceptible to , but detailed and seasonal development of age-related susceptibility remains unclear.

Expression of Putative Defense Responses in Cannabis Primed by and/or Strains and Infected by .

Cannabis ( L.) offers many industrial, agricultural, and medicinal applications, but is commonly threatened by the gray mold disease caused by the fungus . With few effective control measures currently available, the use of beneficial rhizobacteria represents a promising biocontrol avenue for cannabis.

Genome Resources of Two Pathotypes of the Potato Cyst Nematode from New York.

The potato cyst nematode is a regulated pest posing a serious threat to potato production worldwide. Although the endemic pathotype (Ro1) of has been confined to New York State for several decades as a result of quarantine regulations and management with resistant potato cultivars, a virulent pathotype, Ro2, has emerged, for which control measures are scarce. The ability to detect Ro2 early in fields is necessary to sustain the success of quarantine in the United States.

Recent Advances in Population Genomics of Plant-Parasitic Nematodes.

Plant-parasitic nematodes are a costly burden of crop production. Ubiquitous in nature, phytoparasitic nematodes are associated with nearly every important agricultural crop and represent a significant constraint on global food security. Population genetics is a key discipline in plant nematology to understand aspects of the life strategies of these parasites, in particular their modes of reproduction, geographic origins, evolutionary histories, and dispersion abilities.

Evidence for Differences in the Temporal Progress of Clades and Airborne Inoculum Monitored in Vineyards in Eastern Canada Using a Specific Multiplex Quantitative PCR Assay.

Four clades of isolated from wild and cultivated species were described in 2013. Only clades and have been detected in eastern Canada. To increase our understanding of the epidemiology of these clades of , airborne sporangia were monitored with spore samplers at two experimental vineyards from 2015 to 2018 and at 11, 14, and 15 commercial vineyards in 2016, 2017, and 2018, respectively.

Genomic Profiling of Virulence in the Soybean Cyst Nematode Using Single-Nematode Sequencing.

Soybean cyst nematode (SCN) is one of the most important diseases in soybean. Currently, the main management strategy relies on planting resistant cultivars. However, the overuse of a single resistance source has led to the selection of virulent SCN populations, although the mechanisms by which the nematode overcomes the resistance genes remain unknown.