Plant growth promotion and suppression of Phytophthora drechsleri damping-off in cucumber by cellulase-producing Streptomyces

Management of Charcoal Rot (Macrophomina phaseolina) Infection in Geranium (Pelargonium graveolens L) Using Biocontrol Agents and Essential Oils

“…There are several studies about improving growth dynamics and increased availability of nutrients in the rhizosphere (Patten and Glick 2002). It is clearly observed that B.subtilis and T. harzianum treatments and essential oils caused sharp increase in vegetative growth such as plant height, branches, leaves number, and oil yield (Lu et al 2017;Sadeghi et al 2017;Omara et al 2018).…”

“…On the other hand, biological control and essential oils provide an ecofriendly solution alternative to chemical control. For biological control, several microbes like Bacillus pumilus, B.subtilis and B.licheniformis as well as Trichoderma viride and Pseudomonas species have been considered as a biocontrol agents against pathogens through their ability to serve as a source of bioactive compounds and plant growth promoting such as antibiotic production, colonization site competition, production of hydrogen cyanide, hydrolytic enzymes, siderophores, ammonia, fluorescent pigments and/or antimicrobial volatiles (Keshavarz-Tohid et al 2017;Sadeghi et al 2017;Lu et al 2017;Omara et al 2018). For essential oils like Pelargonium roseum, Carum carvi, Pimenta dioica, Cymbopogon nardus and Thymus vulgaris have been considered antifungal activity which may be attributed to their major ingredients or a synergistic or antagonistic effect with various compounds.…”

Biocontrol of chocolate spot disease (Botrytis cinerea) in faba bean using endophytic actinomycetesStreptomyces: a field study to compare application techniques

“…In developing biocontrol agents to treat plant fungal pathogenic diseases, many different organisms could be utilized. Various actinomycetes species are known to have antagonistic activities against many pathogenic microorganisms (Moussa et al, 2011;Ahmad et al, 2017;Martinez-Klimova, Rodriguez-Pena & Sánchez, 2017;Sadeghi et al, 2017;Fabrizius et al, 2018). Many actinomycetes can produce antifungal or antibacterial compounds or out-compete the pathogens (El-Tarabily & Sivasithamparam, 2006;Gomes, Duarte & De Freire Bastos do, 2017;Lee et al, 2018).…”

“…In selecting proper species as biocontrol agents, attention should be paid not only on the disease inhibition but on the growth promotion of the crop plant. Endophytic actinomycetes are known to accelerate seedling emergence and promote plant establishment and growth directly by fixing atmospheric nitrogen, solubilizing phosphate and by producing phytohormones (Misk & Franco, 2011;Haidar et al, 2016;Dias et al, 2017;Sadeghi et al, 2017;Purushotham et al, 2018;Wang et al, 2018b). Therefore, endophytic actinomycetes are promising organisms to be studied when developing biocontrol agents.…”

Evaluation of antagonistic activities against Pythium myriotylum and plant growth promoting traits of Streptomyces isolated from Cocoyam (Xanthosoma sagittifolium (L.) Schott) rhizosphere

“…Otherwise, in vivo pretreatment of cocoyam plants with strains of Trichoderma asperellum (strains PR10 and PR11) isolated from soil samples taken from the rhizosphere of cocoyam plants in Yaounde (Cameroon) could reduce P. myriotylum infection by 50% (Mbarga et al, 2012). Actinomycetes, one of the more numerous microbial groups in suppressive andosols are common inhabitants of plant rhizosphere and plant surfaces (Doumbou et al, 2001;Sadeghi et al, 2017). Their ability to control plant-pathogenic Oomycetes has been widely reported (El-Tarabily et al, 2010;Yang et al, 2014).…”