Biological Control of Root Pathogens by Plant- Growth Promoting Bacillus spp.

Abstract

Reference strain isolated from Common habitats and comments B. acidocaldarius Hot springs Acid hot springs and soils, enrichment from neutral soils have failed. B. alcalophilus Human feces soil, water, dung B. alvei Honeybee larvae suffering from European foulbrood Soil, this specie is a saprophyte but common in bees with European foulbrood B. aminovorans Soil B. amyloliquefaciens Soil soil, industrial amylase fermentations B. amylolyticus Soil B. aneurinolyticus human feces B. azotofixans Soil soil, rhizosphere of various grasses B. azotoformans Soil Soil B. apiaries Dead larvae of honeybee B. badius Human feces Dust, coastal waters, soil B. benzoevarans Soil Soil B. brevis Soil Foods, soil, seawater, and sediments B. cereus Soil soil, foods, especially dried foods, spices, and milk; seawater and sediments B. circulans Soil Widespread in soil and decomposing vegetables; medicated creams, Relatively scarce in soil. B. cirroflagellosus marine mud B. coagulans evaporated milk Beet sugar, canned foods, especially vegetables; medicated creams, relatively scarce in soil. B. epiphytus marine phytoplankton B. fastidiosus Soil soil, poultry litter B. firmus Soil soil, seawater and marine sediments, salt marshes B. freudenreichii Soil, river water, and sewage B. globisporus Soil soil, mud, and water B. insolitus Soil soil, mud, water and frozen foods B. laevolacticus Rhizosphere of ditch crowfoot rhizosphere of plants B. larvae honeybee larvae suffering from American foulbrood Infected brood and honey combs. Presumable in soil around hives of bees B. laterosporas Soil soil, water, dead honeybee larvae, rumen of animals B. lentimorbus hemolymph of larvae of Japanese beetle causes milky disease of scarabaeidae larvae Biological Control of Root Pathogens by Plant-Growth Promoting Bacillus spp.

Antimicrobial and plant growth-promoting properties of the cacao endophyte Bacillus subtilis ALB629

“…Furthermore, Bacillus spp. are also able to produce chitinases that degrade chitin, a major constituent of the fungal cell wall (Kumar et al 2012;Castillo et al 2013). In the case of the ALB629 isolate, we have shown that it presents in vitro antifungal activity against different phytopathogens, both by direct contact (dual-culture assay) and by exposure of their mycelia to its supernatant compounds.…”

“…Bacteria of the genus Bacillus are good candidates for using as biological control agents. They are able to produce a broad array of biologically active molecules, such as antimicrobial compounds, and their spore resistance to desiccation is suitable for formulation of stable products (Castillo et al 2013;Melnick et al 2013;Lyngwi and Joshi 2014). Among the antimicrobial compounds, the lipopeptides can inhibit phytopathogen growth, facilitate root colonization and reinforce host resistance (Ongena and Jacques 2008).…”

Isolation, Cultural and Morphological Characterization of Alternaria dauci causing Alternaria Leaf Blight of Carrot

“…The production and productivity of the carrot crop seems to be hampered due to several biotic and abiotic agents. Among the biotic agents, Alternaria leaf blight/spot caused by A. dauci is one of the major threats causing serious damage to carrot crop and yield losses of about 45-60 percent (Gugino et al, 2004;Chand and Singh 2011;Bhatrath et al, 2012;Castillo et al, 2013). Alternaria leaf blight (A. dauci) is one of the most important foliar diseases of carrot and occurs worldwide.…”