biocontrol agents – Page 5

The green shield: Trichoderma’s role in sustainable agriculture against soil-borne fungal threats

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This research demonstrates that Trichoderma fungi, naturally found in soil, can effectively control harmful plant-killing fungi without toxic chemicals. Scientists isolated these beneficial fungi from Kashmir soil samples and tested them against 12 destructive fungal pathogens, finding they successfully inhibited pathogen growth. The study shows promise for farmers to use these natural biocontrol agents as an environmentally friendly alternative to chemical pesticides.

A carnivorous mushroom paralyzes and kills nematodes via a volatile ketone

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Scientists discovered that oyster mushrooms kill parasitic worms using a toxic gas stored in tiny bulb-shaped structures called toxocysts. The toxin is a common chemical called 3-octanone that ruptures the worms’ cell membranes, causing calcium to flood into cells and leading to rapid paralysis and death. This ‘nerve gas in a lollipop’ strategy could inspire new ways to control parasitic worms in agriculture and medicine.

Analysis of the correlation between the distribution of microorganisms carried by Coix seed and fungal toxins, and the biological control of aflatoxin

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Coix seeds are popular in traditional Chinese medicine and food, but they can become contaminated with harmful fungi that produce toxins called mycotoxins. This study examined which fungi grow in Coix seeds from different regions and found that certain bacteria called Bacillus can effectively prevent dangerous mold from growing and producing toxins. By using these beneficial bacteria, producers can keep Coix seeds safer for people to consume as medicine or food.

The yeast Wickerhamomyces anomalus acts as a predator of the olive anthracnose-causing fungi, Colletotrichum nymphaeae, C. godetiae, and C. gloeosporioides

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A beneficial yeast called Wickerhamomyces anomalus can kill the fungi that cause olive anthracnose, a disease that damages olive crops and reduces oil quality. Unlike chemical fungicides, this yeast works by physically attacking the fungal hyphae, sticking to them and draining their contents to feed itself. This natural biocontrol approach could provide farmers with a safer, more sustainable way to protect olive trees from disease.

Advances in submerged liquid fermentation and formulation of entomopathogenic fungi

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This paper reviews how scientists are improving the production of natural fungal pesticides that kill insect pests. Instead of growing fungi on grains in bags, researchers are using large fermentation tanks similar to those used in food and beverage production. These tanks can produce beneficial fungal cells more quickly and efficiently, with better quality control and safety. The paper discusses different types of fungal cells produced, how to make them stable for storage and field use, and how this technology could replace older production methods worldwide.

Identification, characterization, antimicrobial activity and biocontrol potential of four endophytic fungi isolated from Amazonian plants

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Scientists isolated four types of fungi living inside the leaves of medicinal plants from the Amazon region of Bolivia. These fungi produce natural compounds that kill harmful bacteria and fungi that damage potato crops. The findings show promise for developing natural alternatives to synthetic pesticides and antibiotics for agricultural and medical applications.

Identification of an antifungal lipopeptide from Bacillus amyloliquefaciens HAU3 inhibiting the growth of Fusarium graminearum using preparative chromatography and 2D-NMR

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Researchers identified a soil bacterium called Bacillus amyloliquefaciens HAU3 that naturally produces fengycin, a powerful antifungal compound. This compound can kill disease-causing fungi like Fusarium graminearum that contaminate animal feed and produce harmful toxins. The bacteria also breaks down dangerous toxins called zearalenone, making it a potential natural solution for protecting livestock feed from fungal contamination.

Geographic variation in fungal diversity associated with leaf spot symptoms of Coffea arabica in Yunnan, China

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Researchers studied the fungi found on coffee leaf spots in two different regions of Yunnan province in China. They discovered that the types of fungi varied significantly between the cooler, higher-altitude Pu’er region (which had more harmful fungi) and the warmer, tropical Xishuangbanna region (which had more beneficial fungi that could fight pests). This information can help coffee farmers choose better disease management strategies based on their location.

Mycorrhizal symbiosis and application of vitamin B3-treated Trichoderma Harzianum HE24 additively trigger immunity responses in faba bean plants against Rhizoctonia root rot and promote the plant growth and yield

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Researchers found that combining a beneficial fungus called Trichoderma harzianum with vitamin B3 and mycorrhizal fungi can effectively protect faba bean plants from root rot caused by Rhizoctonia solani. This combined treatment boosted the plant’s natural defense systems and significantly improved plant growth and seed production. The approach offers an environmentally friendly alternative to chemical fungicides for controlling this destructive plant disease.

Impact of Oxalic Acid Consumption and pH on the In Vitro Biological Control of Oxalogenic Phytopathogen Sclerotinia sclerotiorum

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Scientists studied how bacteria that eat oxalic acid can control a destructive plant fungus called Sclerotinia sclerotiorum. The fungus produces oxalic acid to damage crops, but when special bacteria consume this acid, they change the soil pH to become more alkaline, which the fungus cannot tolerate. This research shows that pH changes are just as important as removing the acid itself for controlling this pathogenic fungus in agriculture.

Research Keyword: biocontrol agents