Project description:Photoautotrophic cyanobacteria convert CO2 and produce various bioproducts. However, effective cell harvesting from liquid cultivation is a main obstacle. Automatic bio-flocculation provides a potential solution. In a Synechocystis sp. PCC 6803 (Syn) culture, we found that Syn co-flocculated with the natural contaminated fungi (identified as Penicillium sp.) as sphere biomass cluster with space inside, under the treatment of antibiotic erythromycin, but not without erythromycin. The optimized co-cultivation for five days using the initial Syn density of 0.4 OD730, 5 mg/100 ml fresh weight of Penicillium inoculum, and 5 µM EM in the BG11 medium with no organic compounds produced a complete biomass co-flocculation up to 2.0 g/L, equivalent to the atmospheric CO2 capture of 0.6 g/L/d: the 7.9-times biomass level and 7.2-times CO2 capture amount performed by the axenic Syn culture. A major constituent in Syn-Penicillium flocculated biomass is protein contents ranging from 39-61% of dry weight. In addition, increasing EM concentrations (from 0.3 to 10 µM) enlarged the co-flocculate diameter from x to Y and increasing the culture volumes (from 100 to 200-400 mL) altered co-flocculate surface texture from relatively smooth to rough with thorns. This co-flocculation may be further developed for CO2 capture and biomass utilization as amimal feed with a high protein contents. Syn with Penicillium_1; Synechocystis with Penicillium replicate 1 Syn with Penicillium_2; Synechocystis with Penicillium replicate 2 Syn with Penicillium_3; Synechocystis with Penicillium replicate 3 Syn without EM_1; Synechocystis without Erytromycin treatment replicate 1 Syn without EM_2; Synechocystis without Erytromycin treatment replicate 1 Syn without EM_3; Synechocystis without Erytromycin treatment replicate 1 Syn with EM_1; Synechocystis with Erytromycin treatment replicate 1 Syn with EM_2; Synechocystis with Erytromycin treatment replicate 1 Syn with EM_3; Synechocystis with Erytromycin treatment replicate 1 LR_Syn with Penicillium with EM_1; Large star structure of Synechocystis with Penicillium under EM treatment replicate 1 LR_Syn with Penicillium with EM_2; Large star structure of Synechocystis with Penicillium under EM treatment replicate 2 LR_Syn with Penicillium with EM_3; Large star structure of Synechocystis with Penicillium under EM treatment replicate 3 SS_Syn with Penicillium with EM_1; Small smooth structure of Synechocystis with Penicillium under EM treatment replicate 1 SS_Syn with Penicillium with EM_2; Small smooth structure of Synechocystis with Penicillium under EM treatment replicate 2 SS_Syn with Penicillium with EM_3; Small smooth structure of Synechocystis with Penicillium under EM treatment replicate 3
Project description:Plants coexist in close proximity with numerous microorganisms in their rhizosphere. With certain microorganisms, plants establish mutualistic relationships that can confer physiological benefits to the interacting organisms, including enhanced nutrient assimilation or increased stress tolerance. The root-colonizing endophytic fungi Penicillium chrysogenum, Penicillium minioluteum, and Serendipita indica have been reported to enhance the drought stress tolerance of plants. However, to date, the molecular mechanisms triggered by these fungi in plants remain unexplored. This study presents a comparative analysis of the effects on mock- and fungus-infected tomato plants (var. Moneymaker) under drought stress conditions (40% field capacity) and control conditions (100% field capacity). The findings provide evidence for the induction of common response modules by the fungi.
Project description:Cudrania tricuspidata extracts and 3 major compounds, including 4'-O-Methylalpinumisoflavone, Alpinumisoflavone and 6,8-diprenylgenistein
Project description:Chemical investigations of Penicillium sp. CMB-STF067 is based on both the antibacterial property of its extract and the Global Natural Product Social (GNPS) molecular networking analysis of 176 soil-associated fungi, guided the isolation of 4-new xanthoquinodins, jugiones A-D.
Project description:Fungi are ubiquitous and are often confronted with the need to secure utilisable carbon from their external growth milieu through the use of extracellular proteins to scavenge for carbon from a vast array of complex polymeric carbon sources. This attribute is conserved across evolution in fungi. To understand how filamentous fungi extracellular proteins are modulated in response to the presence polymeric carbons in the environment, we have typed the array of the main extracellular proteins involved and their dynamics using a known hypercellulolytic fungus – Penicillium funiculosum (NCIM 1228), through multiplexed quantitative proteomics
Project description:The black soldier fly, Hermetia illucens, is a promising source for sustainable production of proteins, lipids and bioactive substances. Feeding on a variety of decomposing organic substrates which are typically inhabited by a range of different microorganisms like bacteria and fungi, H. illucens larvae is expected to be able to strongly produce antimicrobial peptides (AMPs) and other substances possessing antibiotic activity. It has been shown that H. illucens larvae extract exhibits antimicrobial activity against some microorganisms, such as Escherichia coli and Staphylococcus aureus, and antimicrobial effect on bacterial biofilm. Numbers of AMPs produced by H. illucens larvae have also been identified so far. Moreover, H. illucens larvae extract was recently observed with significant induction of cell envelop stress response (CESR) in B. subtilis, indicative of potential production of antimicrobial compounds. B. subtilis as a well-established Gram‑positive model strain is widely used in scientific research and an arguably robust platform to investigate antimicrobial compounds at the respect of, such as the mode of reaction of and the stress response elicited by corresponding compounds. In this study, we aimed to characterize the stress responses in B. subtilis induced by H. illucens larvae extract by employing transcriptomic study via RNA sequencing technique. With transcriptional profiling, we are expecting to be able to give some hints of potential antimicrobial compounds produced by H. illucens larvae by referring to the transcriptomic researches on well-studied antimicrobial substances.