plant pathology – Page 11

Argonaute1-Dependent LtmilR2 Negatively Regulated Infection of Lasiodiplodia theobromae by Targeting a Guanine Nucleotide Exchange Factor in RAS Signalling

mycolabadmin

Scientists discovered a tiny regulatory RNA molecule called LtmilR2 in a fungus that causes grape disease. This molecule naturally suppresses the fungus’s ability to cause infection by shutting down a gene called LtRASGEF. When researchers delivered LtmilR2 using specially designed nanoparticles, it successfully stopped the fungus from growing. This discovery could lead to a new type of biological fungicide for protecting grapes and vineyards.

MycoNews 2022: editorial, news, reports, awards, personalia, and book news

mycolabadmin

Mycology is experiencing rapid growth in public awareness and scientific recognition. Popular books and films about fungi have dramatically increased interest in the field. The International Mycological Community celebrated major achievements in 2022, with prominent conferences and awards recognizing outstanding research and contributions to understanding fungi’s vital roles in nature and human health.

Assessment of Chemical and Biological Fungicides for the Control of Diplodia mutila Causing Wood Necrosis in Hazelnut

mycolabadmin

This study tested different fungicides to control a fungus that causes wood damage and necrosis in hazelnut trees in Chile. Researchers evaluated 30 different products in laboratory tests, pot experiments, and field trials over two growing seasons. The results showed that certain chemical fungicides and beneficial bacteria can effectively reduce damage from this disease, with effectiveness varying based on temperature conditions. These findings provide farmers with practical options for protecting hazelnut orchards from this damaging fungal disease.

Flood Inoculation of Fusarium eumartii in Tomato Seedlings: Method for Evaluating the Infectivity of Pathogen Spores

mycolabadmin

This research paper presents a detailed procedure for testing how a fungus called Fusarium eumartii infects young tomato plants. Scientists use a simple flooding method to apply fungal spores to tomato seedlings and then measure how much damage occurs and how much fungus remains in the plant tissue. This standardized method helps researchers evaluate new fungicides and find ways to protect tomato crops from this harmful fungal disease.

Positive interaction between melatonin and methyl jasmonate enhances Fusarium wilt resistance in Citrullus lanatus

mycolabadmin

Researchers discovered that two natural plant signaling molecules, melatonin and methyl jasmonate, work together to protect watermelons from a devastating fungal disease called Fusarium wilt. When applied to watermelon plants at the right concentrations, these molecules trigger the plant’s natural defense mechanisms, making the plants more resistant to infection. The study shows these compounds can be used as natural, sustainable alternatives to chemical pesticides for protecting crops.

Biocontrol efficacy of Pochonia chlamydosporia against root-knot nematode Meloidogyne javanica in eggplant and its impact on plant growth

mycolabadmin

This study shows that a beneficial fungus called Pochonia chlamydosporia can effectively control harmful root-knot nematodes that damage eggplant crops. When applied to soil, this fungus directly attacks nematode eggs and parasitizes the parasitic juveniles, while also boosting the plant’s natural defense systems. Not only does the fungus reduce nematode populations by over 55%, but it also helps eggplant plants grow better with increased height, weight, and chlorophyll content, providing a promising eco-friendly alternative to chemical pesticides.

Didymellaceae species associated with tea plant (Camellia sinensis) in China

mycolabadmin

Researchers identified 25 different fungal species from the Didymellaceae family affecting tea plants across China, including 6 previously unknown species. These fungi cause leaf blight disease that damages tea crops. Tests showed that some species are more harmful than others, with Epicoccum anhuiense being the most damaging and Epicoccum puerense the least damaging to tea leaves.

Effect of Pseudomonas protegens EMM-1 Against Rhizopus oryzae in Interactions with Mexican Autochthonous Red Maize

mycolabadmin

Mexican red maize, an important traditional crop, is threatened by a fungus called Rhizopus oryzae that causes root damage and wilting. Researchers found that a beneficial bacterium, Pseudomonas protegens EMM-1, can effectively stop this fungal infection and help maize plants grow better. Tests showed the bacterium reduced fungal growth by over 80% and improved plant root development when grown together with the fungus.

Biocontrol Potential of Bacillus velezensis RS65 Against Phytophthora infestans: A Sustainable Strategy for Managing Tomato Late Blight

mycolabadmin

Researchers tested 30 soil bacteria from tomato roots to find natural disease fighters. They discovered that Bacillus velezensis RS65, a beneficial bacterium, effectively prevents tomato late blight by producing enzymes and toxins that kill the fungal pathogen. In greenhouse tests, plants treated with RS65 had half the disease severity compared to untreated plants, suggesting this bacteria could replace chemical fungicides in sustainable tomato farming.

Biocontrol efficiency and mechanism of novel Streptomyces luomodiensis SCA4-21 against banana Fusarium wilt

mycolabadmin

A newly discovered bacterium called Streptomyces luomodiensis SCA4-21 offers a natural solution to banana Fusarium wilt, a serious disease that destroys banana crops globally. When applied to banana plants, this beneficial bacterium reduced disease occurrence by 59% while also promoting healthier plant growth. The bacterium works by producing antifungal compounds that kill the disease-causing fungus and by enriching the soil with other helpful microorganisms that protect the plant.

Research Topic: plant pathology