The effect of bacterial preparations on the growth, development and quality indicators of sugar beet yield

Experimental samples of biological products based on endophytic microorganism strains were tested on sugar beet root plants. The studies were carried out at ZAI Agrofirm LLC, Zay District, the Republic of Tatarstan. The most effective preparations applied at the early stages (3–4 leaf phase) were RECB – 31 B (1.5 l/ha), RECB – 74 B (1.5 l/ha), RECB – 74 B (1.5 l/ha), RECB – 44 B (2.0 l/ha), RECB – 50 B (2.0 l/ha), and RECB – 74 B (2.0 l/ha). Biological preparations applied in the row closing leaf phase have an advantage over chemical preparations when applying RECB – 14 B (1.5 l/ha), RECB – 31 B (1.5 l/ha), RECB – 74 B (1.5 l/ha), RECB – 74 B (2.0 l/ha). At the late vegetation stages, experimental preparations increased the yield. A significant increase was observed when applying RECB – 95 B (1.5 l/ha).

Isolation and Mophological Identification of Endophytic Fungi from Moringa Plant (Moringa oleifera Lam.)

Moringa oleifera Lam. is a small, perennial tree which belongs to moringaceae family. This plant is widely known for their nutritional and medicinal purposes. They can associate with microorganisms showing beneficial symbiosis called as endophytic microorganism. Endophytic fungi is microorganism capable of living within the plant tissues without harming their host. This study was aimed for obtaining pure culture of fungal endophytes from M. oleifera and then identifying them based on morphological identification. The morphological identification was done by observing both macro- and micro- morphological characteristics of the endophytic fungi. Twenty endophytic fungi were isolated from lamina, petiole and stem of M. oleifera. The genus obtained were Cladosporium, Colletotrichum, Fusarium, Phomopsis, Phyllosticta, white mycelia sterilia and black mycelia sterilia (Dematiaceae). Keywords: endophytic fungi; identification; isolation; morphology; Moringa oleifera Lam.

Bioactive isochromenone isolated from Aspergillus fumigatus, endophytic fungus from Bacopa monnieri

Fungal endophytes are a significant reservoir of novel bioactive secondary metabolites. Present communication describes isolation and structure determination of isochromenone, from endophytic microorganism <em>Aspergillus</em> <em>fumigatus</em> hosted in <em>Bacopa</em> <em>monnieri</em> plant. Further, its biological evaluation revealed it as antioxidant and antitubercular. The methanol extract of <em>A</em>. <em>fumigatus</em> inhibits the growth of the virulent strain of <em>Mycobacterium</em> <em>tuberculosis</em> H37RV with minimum inhibitory concentration 500 μg/mL. This is the first report of isolation of isochromenone from <em>A. fumigatus.</em>

Screening of endophytic microorganisms from sweetpotato for the production of antimicrobial compounds

This study was an attempt to isolate endophytic microorganism with antimicorbial properties from sweetpotato that are grown in the Philippines. Endophytic microorganims were isolated from surface-sterilized stem cuttings of selected Philipine sweetpotato varieties such as BSP-SP-17, BSP-SP-22, and NSIC-SP-25. The isolates were purified and tested for antimicrobial activities using spot and streak inoculation methods against Lasiodiplodia theobromae (sweetpotato rot-causing mold), Colletotrichum gloesporoides (yam anthracnose-causing mold)