Control of papaya fruits anthracnose by essential oil of Ricinus communis

Evaluation of soapberry (Sapindus saponaria L.) leaf extract against papaya anthracnose

“…Concentrations lower than 50 mg mL -1 did not affect the growth of fungi, but fungal mycelial in vitro growth was significantly inhibited (70%) by 50 mg mL -1 and such inhibition was slightly higher (80%) in the presence of 100 mg mL -1 soapberry extract after a 7-day incubation period (Figure 1). In previous studies, the biocontrol efficacy of Ricinus cummunis, Rheedia gardneriana Planch and Labramia bojeri was evaluated against this pathogen (23,24). Based on these data, soapberry leaf extract can be suggested to have a stronger activity, compared with these previously analyzed plants, and could be employed in plant defense against fungal pathogens.…”

“…Based on the methodology described by Siqueira-Junior et al (24), all tested Petri dishes described above were maintained for three additional days under the same experimental conditions for spore production. At the end of the total incubation period (10 days), five agar discs (5mm diameter) of mycelia were removed from each tested plate, including control.…”

“…Papaya anthracnose caused by C. gloeosporioides was used as a model system for in situ studies following the methodology described by Siqueira-Junior et al (24). Papaya fruits in the stage of more yellow than green coloration were purchased in the local market.…”

Ecofriendly Synthesis of Silver Nanoparticles Using Potato Steroidal Alkaloids and Their Activity Against Phytopathogenic Fungi

“…Research on alternative, ecoofriendly, and economically acceptable control strategies are urgently needed to avoid the adverse effects of agrochemicals used in chemical control. One such alternative strategy is the use of secondary metabolites from plant as biorational tools for pest and disease management to promote sustainable and healthy production of crops 4,5,6,7 . Among secondary metabolites involved in the plant defense against fungal pathogens are the plant alkaloids 4.…”

Selective response of Ricinus communis seedlings to soil borne Rhizoctonia infection

“…Ricin is a byproduct in castor oil production. On the basis of its availability, toxicity, ease of preparation and the current lack of medical countermeasures, ricin has gained attention as potential biological warfare agent [9][10][11] as well as attempts have been made for using these by-products in biocontrol of agricultural pests [12][13][14][15]. Rotations with American jointvetch (Aeschynomene americana), castor (Ricinus communis), hairy indigo (Indigofera hirsuta), partridge pea (Cassia fasciculata), sesame (Sesamum indicum), and velvetbean (Mucuna deeringiana) have resulted in good nematode control and increased yields of peanut and soybean [16].…”