A recent study investigated the relationship between switchgrass and soil microbes, revealing that each cultivar harbors a unique community of bacteria and fungi. The research found that root characteristics, such as length and diameter, differ among cultivars and may influence soil microbiomes.
A novel molecular assay has been developed to investigate how plant fungal pathogens circumvent the bioactivity of SDHIs. The study successfully validated known mechanisms of fungicide resistance in several agriculturally important fungal pathogens.
A recent study found that genes involved in bacterial signaling play a crucial role in the virulence of Psa3, a highly aggressive biovar of the pathogen Pseudomonas syringae pv. actinidiae. This discovery highlights the importance of understanding the diversity of virulence strategies among closely related bacterial strains.
Plants use metabolites, chemical signals, and dual receptor recognition to distinguish beneficial microbes from pathogens. A plant cell follows a flowchart to determine the response needed based on microbe type and lifestyle.
A new disease called halo blight is threatening Michigan's hop production, causing yield losses and altering hop quality. Genetic testing revealed a novel fungal pathogen, Diaporthe sp. 1-MI, which can infect healthy hop plants and cause yellow margins on leaf lesions and browning of cones.
A team of plant pathologists found a protein that naturally enhances wheat resistance to head scab, reducing mycotoxin production. The discovery opens new research avenues and highlights the need to better understand reactive oxygen species connection to disease.
A new technology has made it possible to quickly sequence the entire genome of plant pathogens, enabling faster diagnosis and identification of emerging pathogens. This breakthrough has great implications for the plant pathology field, allowing for more accurate identification of difficult-to-diagnose pathogens.
Lemon trees showed a lower molecular response to the citrus greening disease pathogen Liberibacter asiaticus compared to orange trees. This may be due to accumulated micronutrients and upregulated protease inhibitors in lemons, which hinder photosynthesis. The study's findings could aid in developing resistant citrus varieties.
A comprehensive map of the citrus microbiome has been created, outlining its structure and potential functions. The study reveals that key microbes dominate different niches of the plant, such as the rhizosphere, rhizoplane, endorhiza, and phyllosphere.
The soybean cyst nematode is the most damaging pathogen of soybean in the US and Canada, with recent estimates suggesting it causes $1.5 billion in annual yield losses. SCN was found in over 100 new counties between 2017 and 2020, highlighting the need for continued research and management strategies.
A study examined how seed microbiomes of canola are assembled, finding that both genetic and environmental factors play a role. The researchers discovered a core microbiome in all seed samples with potentially beneficial microbes like Pseudomonas spp., which promote plant growth.
A recent study found that silencing SDIR1 reduces growth of host-specialized and nonhost Pseudomonas syringae strains, while overexpressing it enhances disease resistance to both biotrophic and necrotrophic pathogens. Higher levels of ABA and jasmonic acid are also detected in SDIR1-overexpression plants.
A new study found that plant genetics, tissue type, and management strategy play a crucial role in shaping the plant microbiome. The research discovered that bacterial communities are most diverse in the soil, while fungal communities are more evenly distributed across different tissues.
Research found that antibiotics like streptomycin did not significantly impact the apple leaf microbiome, contrary to previous concerns. The study's findings suggest that geographical location plays a larger role in shaping bacterial composition than management strategy.
Researchers at the University of Minnesota have identified a gene, Rpg7, responsible for high stem rust resistance in wild barley from Jordan. This discovery could provide valuable insights into breeding programs to combat this devastating disease affecting global cereal crops.
Recent discoveries have revealed a complex picture of plant defense, with responses to PRR receptor signaling and NLR signaling extensively overlapping. The two immune branches are now considered to be more intimately connected than previously thought, leading to a re-thought model of separate ETI and PTI pathways.
Researchers discovered phytol, a chlorophyll constituent, inhibits root invasion by certain nematodes without killing them. Phytol induces host defense mechanisms against nematodes in plant roots.
Researchers studied the co-evolutionary relationship between wheat stripe rust fungus and its hosts, identifying evolutionarily conserved genes in barberry suggesting an earlier interaction. The work provides insights into the roles of barberry in wheat rust disease and sustainable control strategies.
Researchers found that treating apple flowers with specific bacteria strains reduced fire blight symptoms, altering floral microbiomes and disease rates. The study suggests that flowers may be a key site for biocontrol interventions, offering a new approach to managing this damaging disease.
Researchers have identified wild relatives of chickpea as a natural source of resistance to Ascochyta blight, a devastating disease that can cause up to 100% yield loss. These wild plants, including Cicer reticulatum and Cicer echinospermum, have been found to be resistant to the disease.
A study found that a plant's evolutionary history predicts its susceptibility to powdery mildew disease. Researchers tested 126 sunflower species and found no association with common traits like biomass or trichome density.
A new study from China Agricultural University investigates the role of Hsc70-2 protein in virus-host interaction, identifying key amino acids responsible for systemic infection. The research supports a scenario where viral coat protein adaptations ensure better survival and spread among different plant hosts.
A recent study found that a diverse population of fungi, including Hyalorbilia, are likely killing cyst nematodes, leading to a natural decline in pesticide use. This decrease in pesticide application has resulted in increased broccoli yields and reduced environmental impact.
Researchers have developed a more sustainable approach to treating citrus canker, which reduces copper usage by up to 80%. The new technique involves using less water and copper, resulting in lower costs and environmental impact. By adopting this method, citrus growers can minimize the risk of developing copper-resistant strains.
A new study reveals how a bacterial pathogen manipulates host senescence to cause citrus greening disease. Researchers identified an effector that promotes bacterial colonization and disease development in citrus.
Researchers developed a new heat-based treatment that eliminates pathogens without harming plants, using a two-step process involving conditioning and lethal temperatures. This method reduces phytotoxicity and dispersal of pathogens, increasing fruit quality and yield while minimizing pesticide applications.
A study in Plant Health Progress identified Fusarium flower blight and Helminthosporium leaf spot as prominent diseases in southeastern US hemp production. The research also found nutritional deficiencies, toxicities, and issues with excess water and herbicide injuries.
A team of plant pathologists compiled annual corn reduction data from 26 US states and Ontario, Canada, revealing significant regional variations in disease impact. The analysis provides a broader view of diseases affecting corn production in the region.
The study maps cotton fiber quality to determine how in-field practices impact fiber growth, enabling growers to maximize profitability and reduce environmental impact. By combining data on yield, fiber quality, and sustainability metrics, producers can provide customers with information on the cotton they use.
Citrus disease-induced microbial shifts may lead to new management strategies for crops. Researchers found increased diversity in microbiome associated with Huanglongbing disease progression.
Scientists explore why some plants resist certain pathogens while others are susceptible. Recent advances in technology will aid in understanding the molecular basis of nonhost resistance, enabling improved disease control strategies.
Researchers identified multiple bacterial strains that increase adherence of PGPB to plant roots, enabling them to work together for mutual benefit. This finding may lead to the development of groups of bacteria that can better protect crop plants and improve their growth.
Scientists discovered that metabolites from a wild potato relative inhibit the production of enzymes and communication in the pathogenic bacteria, leading to increased disease resistance. The findings offer insights into how to improve crop yields by studying wild relatives of food plants.
A new cost-effective technique, PNA clamps, has been developed to study non-bacterial plant microbiomes. This method allows researchers to detect thousands of sequences from rare microorganisms that were previously undetectable.
A new study finds the Sr22 gene is conserved among grasses in the Triticeae and Poeae lineages, with significant expansion in barley and oat lineages. The research provides valuable insights into plant disease resistance gene function and evolution, potentially improving crop resilience to agriculturally important diseases.
Research reveals Xylella fastidiosa transmission peaks in July and August, affecting grapevine Pierce's disease in California. The study suggests late-season infections are more likely to persist, highlighting the need for regionally specific data.
Researchers found that flies in apple orchards can acquire fire blight bacteria from sugary droplets on diseased trees and transmit it to uninfected shoots. This discovery provides new insights into the disease cycle and highlights the importance of integrating historical literature into modern research.
Researchers have identified 13 efficient natural and semi-synthetic glucosinolate derivatives as effective fungicides against widespread fungal plant pathogens. These compounds exhibit strong synergistic fungitoxic effects when used in combination.
A recent study has clarified the life history of the devastating plant pathogen Plasmodiophora brassicae, revealing a complex life cycle with a previously unknown sexual stage. The research provides fundamental insights into the pathogen's biology and its interactions with host plants.
A new strain of rhizobacteria has been shown to naturally promote rice growth and improve carbohydrate metabolism. This discovery offers a sustainable alternative to chemical fertilizers, reducing environmental pollution and increasing production.
Scientists found that even a short dry period of 30 minutes reduced spore germination to almost zero, preventing disease on spinach. The study also revealed that standing water on leaves is essential for the spores to cause disease, enabling growers to design better management strategies.
Researchers discovered a soil fungus that parasitizes cyst nematode females and eggs, reducing populations by up to 10,000-fold. This finding could lead to more frequent planting of sugar beets and reduce economic losses caused by these nematodes.
The causal agent of cucurbit downy mildew, Pseudoperonospora cubensis, has two genetically distinct host-adapted clades, with Clade 1 infecting squash, pumpkin, and watermelon, and Clade 2 impacting cucumber and cantaloupe. Wild cucurbits serve as reservoirs for the pathogen.
Researchers have discovered that arbuscular mycorrhizal fungi can reduce SCN populations by up to 80% and suppress egg hatching by 30%. This finding opens new avenues for biological control and provides an additional management tool to mitigate the impact of SCN on soybean production.
A team of biologists discovered that phytoplasma effector proteins interact with specific molecules in plant hosts, causing developmental abnormalities and devastating changes. The research found that the effector proteins adopt a structure similar to their target host molecules, allowing them to bind and cause harm.
A team of plant pathologists developed a comprehensive guide for diagnosing cucurbit downy mildew, caused by the obligate pathogen Pseudoperonospora cubensis. The guide provides written and graphic material to help identify symptoms and diagnose the disease using DNA testing and microscopy.
Research demonstrates that a stable bacterial microbiome exists within surface-sterilized perennial ryegrass seeds, which almost disappears as the plant matures but returns in a new generation of seed. The microbiome is influenced by soil type and can be used to track the movement of bacteria from parent to seed.
Researchers found that auxin suppresses salicylic acid-mediated plant defense responses and promotes disease in Arabidopsis thaliana. Auxin also regulates virulence gene expression in Pseudomonas syringae bacteria, leading to increased disease susceptibility.
A single fungicide application at the silking stage provides the best foliar disease control in Kentucky corn crops, according to research by Carl Bradley and colleagues. This approach is more cost-effective than sequential applications, allowing farmers to improve their return on investment.
A new interactive tool, ClubrootTracker, has been developed to help farmers locate and manage clubroot-infected areas. The tool groups the distribution of clubroot disease in one place, making it easier for farmers, researchers, and industry representatives to share information and plan a clubroot-free farm.