A Trojan horse approach for white mold biocontrol: Paraconiothyrium endophytes promotes grass growth and inhibits Sclerotinia sclerotiorum

Alves, Natálie Martins; Guimarães, Rafaela Araújo; Guimarães, Sarah S. C.; Faria, Amanda Frausino de; Santos, Ítalo Augusto Férrer Melo; Medeiros, Flávio Henrique Vasconcelos de; Jank, Liana; Cardoso, Patrícia Gomes

doi:10.1016/j.biocontrol.2021.104685

Cited by 10 publications

(3 citation statements)

References 38 publications

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“…Earlier, different endophytic fungal isolate enhanced the germination rate of rice and seedling vigor (Alves et al 2021). This may be happened due to different secondary metabolites secretion or phenolics secretion along with phytohormones basically auxins and solubilization of inorganic phosphate (Fahsi et al 2021).…”

Section: Discussionmentioning

confidence: 99%

The potential of fungal endophytes isolated from wild rice species for paddy (Oryza sativa L,) health management

Jena,

Mukherjee,

Swain

et al. 2023

Preprint

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Eleven endophytic fungi were isolated and identified from seven wild rice species which were confirmed to be endophytes using endophyte specific marker. Curvularia lunata (NRRI EF-11) and Hypocreals sp (NRRI-EF-8) resulted in better bio control effectivity against 4 different rice pathogens. The same isolate had better growth promotion activities in rice as compared to other isolates. Production of plant growth promoting chemicals namely IAA, IP and prussic acid were studied. Induction of defense was confirmed analyzing the expression of different defense enzymes. interestingly all the endophytes were able to enhance yield. So, these endophytes can be utilized for better management of crop health resulting in higher yield and return.

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Section: Discussionmentioning

confidence: 99%

The potential of fungal endophytes isolated from wild rice species for paddy (Oryza sativa L,) health management

Jena,

Mukherjee,

Swain

et al. 2023

Preprint

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“…Contextually, S. sclerotiorum, causing white mold in a wide range of hosts, can mainly attack crops such as beans, soybeans, and other vegetables [43]. Alves et al [44] highlighted the importance of biological control for the management of this fungus, since resistant cultivars already exist.…”

Section: Antifungal Activitymentioning

confidence: 99%

Extracts of Senecio brasiliensis and Solanum viarum as Potential Antifungal and Bioherbicidal Agents

Confortin,

Todero,

Luft

et al. 2024

Processes

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Ultrasound-assisted extraction is an interesting tool for obtaining bioactive compounds from plant matrices applicable as agricultural bio-inputs, as it increases the extraction efficiency, reducing the process time and the use of solvents. This technique uses ultrasonic waves to break down plant cell walls, releasing bioactive compounds quickly and effectively and promoting a sustainable path to obtaining bio-inputs. Accordingly, this research study reports pioneering results regarding the herbicidal and fungicidal potential of different extracts obtained from Senecio brasiliensis (samples from flowers, leaves, and stalks) and Solanum viarum (samples from fruits and roots), two weeds typically found in rural areas of South America. The fungicidal activity of the samples was tested on two fungi, i.e., Fusarium graminearum and Sclerotinia sclerotiorum, while the herbicidal action of the extracts was evaluated in pre-emergence tests in cucumber (Cucumis sativus) seeds. The successful results indicated a high antifungal and herbicidal potential of the extracts obtained for both weeds, with the inhibitory effect against both fungi achieving up to 82%, and the inhibition of C. sativus seed germination reaching 100% for all samples.

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“…The S. sclerotiorum strain used in these experiments was obtained from the Ingaí municipality (21° 24′ 03" S 44° 55′ 01" O) in the southern part of 113.Minas Gerais (Brazil) at 971 m of altitude. The region has a tropical climate at altitude and the isolate was obtained from symptomatic soybean plants, as described by Alves et al (2021) [29].The sclerotia were subjected to a comprehensive surface sterilization protocol, beginning with a 30-s immersion in 70% ethanol, followed by a 2-min exposure to a 2% sodium hypochlorite solution. Subsequently, they were rinsed three times with distilled water.…”

Section: Obtaining and Multiplication Of Sclerotinia Sclerotiorummentioning

confidence: 99%

How can an in vitro incompatibility of Trichoderma-based products and herbicides impact the parasitism and control of white mold (Sclerotinia sclerotiorum (Lib.) De Bary)?

Canuto da Silva,

de Faria,

Guimarães

et al. 2024

Crop Health

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The integration of management methods for both diseases and weeds depends on the compatibility between the tools. Biological control represents an important strategy to cope with the integrated management of white mold (Sclerotinia sclerotiorum) through parasitism of sclerotia. However, its application in the field is more cost-effective if combined with the herbicide in a tank mix, as long as the products are compatible. Therefore, we aimed at (i) evaluating two compatibility test methodologies (constant exposure and different times) and (ii) two soybean crop seasons to infer the compatibility of Trichoderma-based products. In vitro bioassays were performed to assess the compatibility between herbicides (Haloxifope-p- methyl, Glyphosate N-ammonium salt, Fluasifope-p-butyl, Fomesafem, Chlorimuron ethyl and Imazapyc + Imazapyr) and two biocontrol agents (Trichoderma asperellum and Trichoderma harzianum). Thus, the recommended spray volume for each herbicide was added to the PDA culture medium (Potato-Dextrose-Agar) and then deposited in the center of the plate a disc of mycelium from each antagonist isolate (constant exposure). The tests with time of exposure were marked at times 0, 2, 4, 8 and 16 h (simulating tank mixing) and at the spp of each time were plated on PDA medium. For both tests, the mycelial growth and conidiogenesis of Trichoderma spp. were observed. The combination of herbicide and biocontrol was also tested in the field and sclerotia parasitism, white mold incidence and plant yield were assessed in two field trials. The constant exposure of the antagonists to herbicides revealed that no herbicide was compatible with the T. asperellum or T. harzianum. While in test, exposure time exhibited compatibility with either T. asperellum or T. harzianum, within a period of 2 to 8 h. Conclusively, the integration of biocontrol agents with the herbicide imazapique + imazapyr exhibited significant reductions in white mold disease incidence and conidia germination, along with effective parasitism of S. sclerotiorum and even the least compatible herbicide (glyphosate) resulted in significant reduction in the disease incidence and sustained yield when compared to the untreated control. Therefore, the integration of the biocontrol agent for white mold should always be considered, and the tank mixing of it with the herbicide represents a cost-effective alternative for the grower.

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A Trojan horse approach for white mold biocontrol: Paraconiothyrium endophytes promotes grass growth and inhibits Sclerotinia sclerotiorum

Cited by 10 publications

References 38 publications

The potential of fungal endophytes isolated from wild rice species for paddy (Oryza sativa L,) health management

The potential of fungal endophytes isolated from wild rice species for paddy (Oryza sativa L,) health management

Extracts of Senecio brasiliensis and Solanum viarum as Potential Antifungal and Bioherbicidal Agents

How can an in vitro incompatibility of Trichoderma-based products and herbicides impact the parasitism and control of white mold (Sclerotinia sclerotiorum (Lib.) De Bary)?

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