Agricultural Pathology – Page 2

Mitochondrial heterogeneity drives the evolution of fungicide resistance in Phytophthora sojae, with associated fitness trade-offs

mycolabadmin

Researchers studied how a plant pathogen called Phytophthora sojae develops resistance to the fungicide ametoctradin. They found that resistance builds up gradually through changes in mitochondrial DNA, where a single mutation accumulates over generations. While this mutation helps the fungus survive the fungicide, it damages its mitochondria and reduces its overall fitness, though the organism can partially compensate through increased expression of a protein called TFAM1.

A novel partitivirus confers dual contradictory effects to its host fungus: growth attenuation and virulence enhancement

mycolabadmin

Researchers discovered a new virus that infects a fungus causing disease in tea plants. Interestingly, this virus has opposing effects: it slows down the fungus’s growth but makes it more damaging to tea leaves. This unusual combination of effects provides new insights into how viruses interact with fungal pathogens and could inform new strategies for managing tea plant diseases.

Pathogen identification and biological fungicides screening for Plumbago auriculata blight in China

mycolabadmin

A newly identified fungal disease caused by Fusarium ipomoeae is harming Plumbago auriculata plants in China. Scientists identified the pathogen using genetic analysis and tested seven plant-based treatments. They found that osthole, a natural compound, effectively controls the disease with 88% success rate, offering an environmentally friendly solution for protecting ornamental plants.

Isolation and Identification of Postharvest Rot Pathogens in Citrus × tangelo and Their Potential Inhibition with Acidic Electrolyzed Water

mycolabadmin

Tangelo fruits suffer from fungal rot during storage caused primarily by two fungi: Penicillium citrinum and Aspergillus sydowii. Researchers tested acidic electrolyzed water (AEW), a safe and environmentally friendly treatment, and found it effectively kills these fungi by damaging their cell membranes and causing them to leak their contents. This treatment could replace harmful chemical fungicides while keeping tangelo fruits fresh and safe for consumers.

Identification of Pseudocercospora mori as the causal agent of grey leaf spot disease in mulberry (Morus atropurpurea) from various localities in Guangdong Province, China

mycolabadmin

Researchers identified a fungus called Pseudocercospora mori as the cause of grey leaf spot disease in mulberry trees grown in Guangdong Province, China. Using advanced DNA sequencing and traditional microscopy, they confirmed this pathogen causes dark spots on mulberry leaves that reduce quality and yield, harming the silk industry that relies on mulberry leaves to feed silkworms. The study developed specific detection methods to help farmers identify and manage this disease in their orchards.

Optimization of cultural conditions for pectinase production by Diaporthe isolate Z1-1N and its pathogenicity on kiwifruit

mycolabadmin

Researchers studied how a fungus called Diaporthe causes soft rot in kiwifruit by producing special enzymes called pectinases that break down the fruit’s cell walls. They found the best conditions for growing these enzymes in the lab: a temperature of 28°C, neutral pH around 7.5, and 2-3 days of growth. When they extracted these pure enzymes and put them on fresh kiwifruit, the enzymes caused damage equivalent to about half the damage caused by the living fungus itself, proving these enzymes are important for disease development.

Inhibition of Fusarium oxysporum growth in banana by silver nanoparticles: In vitro and in vivo assays

mycolabadmin

Bananas are threatened by a fungal disease called Fusarium wilt that damages crops worldwide. Scientists tested tiny silver particles called nanoparticles as a treatment for this disease on banana plants. The treatment successfully reduced disease by about 68% when applied to the roots, showing promise as an alternative to traditional fungicides for protecting banana crops.

First Report of Colletotrichum kahawae Causing Anthracnose on Buckwheat (Fagopyrum tataricum) in China and Biological Characterization of the Pathogen

mycolabadmin

Researchers discovered a serious fungal disease affecting buckwheat crops in China caused by Colletotrichum kahawae, a fungus that ranks among the world’s most damaging plant pathogens. Through laboratory tests, they identified the fungus and determined its optimal growth conditions and which other crops it can infect, including wheat, oats, potatoes, and maize. This is the first time this particular fungus has been reported on buckwheat, and the findings will help farmers develop strategies to prevent and manage the disease.

Decapeptide Inducer Promotes the Conidiation of Phytopathogenic Magnaporthe oryzae via the Mps1 MAPK Signaling Pathway

mycolabadmin

Scientists discovered a small peptide molecule (MCIDP) found in protein-based materials that significantly increases spore production in rice blast fungus. This peptide works by activating specific cellular signaling pathways that control fungal reproduction. The research provides insights into how fungal reproduction is regulated and could lead to new strategies for controlling rice blast disease, one of the world’s most destructive crop diseases that causes significant crop losses.

Influence of Light Spectrum on Bread Wheat Head Colonization by Fusarium graminearum and on the Accumulation of Its Secondary Metabolites

mycolabadmin

Researchers studied how different colors of light affect a fungal disease in wheat and the toxic compounds it produces. They found that blue light reduces disease spread but increases toxin production, while red light also reduces disease but increases different types of toxins. This discovery could help farmers better manage wheat diseases by understanding how light conditions affect both the fungus and the grain’s safety.

Research Topic: Agricultural Pathology