Articles tagged with Plant Diseases
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Researchers have discovered a new source of resistance to the devastating wheat blast disease, leveraging a gene that also protects against powdery mildew. The Pm4 gene, found in European wheat varieties, confers dual protection against the pathogen and its effector molecule AVR-Rmg8.
Researchers at Osaka Metropolitan University discovered that mycoviral infections can increase the sensitivity of oomycete plant pathogens to specific fungicides. This finding could lead to innovative approaches for controlling plant diseases and reducing chemical treatments.
A decade-long study has discovered a vast untapped genetic potential in modern wheat varieties, revealing that at least 60% of the genetic diversity found in a historic collection is unused. This discovery provides an unprecedented opportunity to improve modern wheat and sustainably feed a growing global population. The study used a cr...
Research found that weeds in cities have significantly more mildew than those in suburbs or countryside. Urban heat islands and human activity may contribute to the phenomenon. Potted plants placed in shaded areas had more mildew than full sun, but extreme summer heat is lethal to powdery mildew.
Researchers have identified 31 effector genes from the fungus Ceratocystis fimbriata, which causes devastating black rot in sweetpotatoes. This breakthrough provides a new approach to developing disease-resistant crops using effector-assisted breeding.
Novel OMTs involved in phenylphenalenone phytoalexins' biosynthesis enhance antifungal properties against Fusarium oxysporum. The study provides a genetic resource for improving banana disease resistance through molecular breeding.
A study reveals that salty soil conditions can facilitate disease in plants caused by the Gram-negative bacterium Pseudomonas brassicacearum R401. The researchers identified a phytotoxic metabolite, brassicapeptin, which is toxic to plants under salt stress and forms pores in plant membranes.
A plant-based diet is associated with a 47% lower risk of prostate cancer progression in men. Eating one or two extra servings of healthy foods daily can significantly reduce the disease's worsening chances.
Scientists have discovered a positive relationship between calcium concentrations and potato plant resistance to bacterial wilt. Calcium supplementation can significantly reduce the growth rate of the pathogen and negatively affect its ability to form biofilms and move.
The Phytopathology Research Forum successfully concluded its spring edition, showcasing cutting-edge developments in plant disease research and molecular breeding technology. Experts discussed the importance of adopting provenance security measures to ensure agricultural product integrity.
Researchers at the University of Adelaide have identified a fundamental discovery that could help reduce the economic harm caused by Fusarium head blight, a fungal disease on the rise due to climate change. The study found that the TaHRC gene functions in wheat cells and can either increase or decrease susceptibility to FHB.
Grafting onto a disease-resistant rootstock reduces pathogenic Agrobacterium abundance and alters the microbiome composition, enriching beneficial bacteria. The decreased valine in root exudates from grafted plants contributes to decreasing Agrobacterium abundance and suppressing crown gall disease.
A rapidly spreading virus is attacking cacao trees in Ghana, resulting in harvest losses of between 15-50%. Researchers have developed a new strategy to combat the spread of the disease using mathematical data to determine safe planting distances for vaccinated trees.
A consortium of scientists, including Brazilians, has successfully sequenced the reference genome of Arabica coffee. The study identified genes responsible for resistance to rust and other diseases, as well as those related to the aroma of Arabica coffee. By comparing a dihaploid-derived genome with a common tetraploid variety, researc...
A new study published in Stroke found that exposure to artificial, bright outdoor nighttime light may increase the risk of cerebrovascular disease and stroke. The research, which analyzed data from over 28,000 adults living in China, suggests that higher levels of outdoor light pollution at night may be a risk factor for these conditions.
A new study has identified a crucial role for plant MLKL proteins in regulating cytoplasmic calcium ion concentration, which is responsible for innate immune responses. The research found that activated plant MLKLs maintain higher calcium levels, activating downstream immune machinery and conferring disease resistance.
Researchers have discovered how Beech Leaf Disease (BLD) affects beech trees, revealing a novel mechanistic explanation for its decline. The disease impacts leaf development and photosynthesis, leading to reduced carbon assimilation capacity and potential tree mortality.
A study using historic and modern writing reveals more information about the effects and spread of Phytophthora infestans, a plant pathogen that caused the 1840s Irish potato famine. Researchers tracked the disease's spread across the US and Canada, finding it affected multiple states and provinces between 1843-45.
Researchers mapped potato blight outbreaks in the US from 1843-1845, revealing the disease's early spread and public understanding of its causes during the mid-19th century. The study provides insight into the disease's history and its impact on crop losses.
Researchers at the University of Illinois have identified genomic regions associated with resistance to four diseases in corn: Goss's wilt, gray leaf spot, northern corn leaf blight, and southern corn leaf blight. The study found that multiple genes working together can provide durable resistance against different pathogens.
A breakthrough in DNA sequencing technology has identified the fungus genus Ceratobasidium as the culprit behind cassava witches' broom disease. This discovery will help plant pathologists in Laos and other Southeast Asian countries protect their crops, supporting millions of smallholder farmers who rely on cassava.
A new study warns that climate change could reduce global wheat production by 13% by 2050 due to the spread of the fungal disease wheat blast. The affected regions will include South America, southern Africa and Asia, where up to 75% of total wheat acreage could be at risk.
A new study at the Hebrew University of Jerusalem sheds light on the role of effector AopW1 in host adaptation, providing new perspectives on bacterial fruit blotch. The research highlights differences between strains of Acidovorax citrulli and their impact on melon and watermelon crops.
New research reveals that domestication impacts the microbial communities associated with crops. The study found consistent effects on the plant microbiota across independently domesticated crop species in Mesoamerica and South America. Changes in seed mineral content were linked to changes in microbiome composition.
A study led by Prof. Haiping Wang at IVF-CAAS identified a plasma membrane-localized Ca2+ sensor BraCBL1.2 that functions downstream of BraCRa upon Plasmodiophora brassicae infection, enhancing clubroot resistance in Chinese cabbage.
Researchers have successfully engineered the plant microbiome to boost beneficial bacteria that protect plants from disease. This breakthrough could substantially reduce pesticide use and unlock opportunities to improve plant health.
Jujube witches' broom disease is a fruit tree disease caused by phytoplasma, leading to altered plant development and severe yield loss. The review highlights the importance of understanding the interaction between phytoplasma effectors and plant target proteins to develop effective prevention and cure strategies.
Plant scientists have discovered a sophisticated RNA defense system that plants use to attack gray mold cells, sending mRNA molecules that disrupt fungal cellular processes. This innovative approach could lead to the development of eco-friendly fungicides with minimal environmental impact and no harm to humans or animals.
A study published in Journal of the Science of Food and Agriculture proposes a framework to characterise the unique properties of cacao beans in the Buenaventura region. The research highlights the benefits of establishing Denominations of Origin for cacao, including higher market prices, cultural preservation, and sustainable practices.
Researchers found that mycorrhizal fungi can significantly improve crop yields by up to 40% in fields with high levels of fungal pathogens. The inoculation was most effective when the soil had already been contaminated with pathogens, serving as a protective shield against further damage.
Researchers found that 1,8-cineole inhibits inflammatory pathways in the gut, while ginsenoside Rk2 alleviates liver inflammation and restores intestinal barrier function. Another compound, specnuezhenide, modifies gut microbiota and has potential to inhibit colorectal tumor growth.
Researchers at the University of Copenhagen have found that quinoa's 'bladder cells' do not protect against salt and drought, but instead serve as a barrier against pests and diseases. The discovery could lead to more resilient quinoa varieties for global cultivation.
A recent study in Nature Communications has identified a gene cluster in wheat that produces triticein, an isoflavone compound with potential health benefits. This discovery offers opportunities for metabolic engineering efforts to improve wheat's nutritional quality and resistance to disease.
A team of scientists led by the University of Arkansas System Division of Agriculture has been awarded a $3.57 million grant to develop spinach cultivars resistant to fungal pathogens. The project aims to expedite breeding for disease resistance, reducing fungicide use and supporting sustainable spinach production.
A recent study has provided significant genomic insight into tar spot of corn, a destructive disease causing $1.2 billion in yield loss. The researchers identified over 100 novel effectors that play a crucial role during infection, warranting further investigation.
Researchers at Cornell University have discovered a new grape downy mildew resistance gene that is one of the strongest found globally. The discovery could help breeders develop more resistant grape varieties, reducing the need for fungicides and their associated costs.
Researchers found that sunflower stem extracts can prevent gray mold in blueberries by destroying the fungus's plasma membrane and preventing it from forming biofilms. The extracts protected almost half of the berries from mold growth over six days.
A new study published in Conservation Physiology identifies the critical limits of plant function under stress, enabling more effective conservation strategies. By understanding these limits, conservationists can identify vulnerable species and allocate resources more wisely.
Banana Xanthomonas Wilt (BXW) could cause a 55% reduction in banana production in newly affected regions within 10 years. The disease is projected to result in significant economic losses, with consumers bearing 40% of the estimated $25 billion cost.
A recent study reveals that emerging infectious diseases are accumulating rapidly globally, particularly in Holarctic trees. The 'big data' approach used in the study characterizes the growing threat posed by emergent infectious diseases, with some tree species, such as pines and oaks, showing high new disease accumulation.
Researchers discovered a synthetic plant biology approach to prevent protein aggregation in human cells and nematodes, using the plant enzyme stromal processing peptidase (SPP) derived from chloroplasts. This finding opens the door to testing SPP as a potential therapy for Huntington's disease.
Researchers at Tokyo University of Science have uncovered a novel mechanism for sorting endocytic cargo, revealing a specific compartment within the trans-Golgi network that determines the fate of cargo. This discovery has implications for understanding basic life processes and diseases caused by disruptions in endocytosis.
Researchers found that AvrE/DspE family proteins, used by plant pathogens to cause disease, fold into a straw-like structure with a water channel. This discovery could lead to the development of new methods to disarm these proteins and prevent crop damage.
A team of University of Connecticut undergraduates has published the first full map of the butternut's DNA, a process that could help conserve endangered species. The project is part of an ambitious effort to sequence the DNA of overlooked organisms, including deep-sea corals and critically endangered birds.
Researchers found that plant-to-plant interactions can modulate disease susceptibility in both wheat and rice, with 23 same-species mixtures showing a significant effect. This phenomenon, known as Neighbor-Modulated Susceptibility, may be used to design varietal mixtures with embedded crop protection.
Researchers at UTSA are studying the bioactive properties of Sweet Annie, a plant used in traditional Chinese medicine for over 2,000 years. The study reveals that arteannuin B from the plant has anti-COVID and anti-glioblastoma properties, offering new avenues for targeted therapy.
Researchers found a single gene cluster that determines whether fungus aids or hinders plant growth, offering potential for reducing food waste and increasing crop yields. The study highlights the complex relationships between fungi and their host plants, challenging traditional views of pathogenic and mutualistic traits.
A new study published in BioScience documents the progress of the InvaCost endeavour, which has compiled data on the economic cost of biological invasions. The database now includes over 13,553 entries and provides a clear picture of the major threats posed by invasive species to ecosystems, biodiversity, and human well-being.
A team of researchers at the University of Johannesburg has made a groundbreaking discovery about how tomato plants defend themselves against the devastating ToCSV virus. By studying the molecular genetics of infected tomato varieties, they found that viral DNA methylation plays a crucial role in resistance to ToCSV.
Researchers discovered an endolysin gene from Candidatus Liberibacter asiaticus that confers dual resistance to Huanglongbing and citrus canker. The study found that the gene, LasLYS2, not only provides protection against HLB but also clears infected plants of the causal agent.
Researchers have identified an essential stage in the takeover of rice cells by a fungus, which could accelerate treatment or prevention of rice blast disease. The discovery involves a modification in tRNA molecules that aid in protein construction, and its absence leads to reduced virulence.
Scientists at the Boyce Thompson Institute have constructed a comprehensive 'super-pangenome' for watermelon and its wild relatives, uncovering beneficial genes lost during domestication. This genetic toolkit can be used to develop varieties with enhanced yield, increased disease resistance, and improved adaptability.
Researchers have discovered a gene, B5, in Egyptian cotton that confers powerful resistance to bacterial blight. The gene enables strong resistance to the disease under Oklahoma field conditions and accumulates high amounts of defense chemicals.
The American Phytopathological Society has published a focus issue on critical biosecurity gaps in US plant disease diagnostics, highlighting the need for harmonized diagnostics within the agricultural biosecurity system. The focus issue addresses assay validation methods, including high-throughput screening and PCR/RPA techniques.
Researchers have identified a new trichothecene, NX, produced by Fusarium graminearum, which contributes to the pathogen's ability to infect wheat and spread disease. Deleting the gene responsible for NX production reduces toxin levels and disease severity, providing potential control methods.
A recent study confirmed which genes in the HiVir cluster are essential and which contribute partially to the disease. The toxin produced by Pantoea ananatis has broad-spectrum activity, potentially targeting conserved functions within plants.
Scientists have developed disease-resistant rice varieties to combat a devastating bacterial outbreak in Tanzania and potentially other African countries. The new lines, created using advanced breeding techniques, show broad-spectrum resistance against Xoo bacteria strains, offering hope for increasing yields and food security.
Researchers have identified a novel gene WTS that confers broad-spectrum resistance to clubroot disease in Brassica crops. The WTS protein complex functions as an endoplasmic reticulum-localized calcium release channel, increasing cytosolic calcium ions and activating plant defenses.
The American Phytopathological Society published a special issue on key discoveries in plant pathology, highlighting groundbreaking findings over the past 50 years. These discoveries have significantly impacted plant health, food security, and food safety worldwide.
The Sooty Bark Disease, caused by Cryptostroma corticale, is a growing threat to European maples and human health. Researchers have developed a DNA-based diagnostic method to detect the pathogen in air samples using volumetric air samplers.