| Title: | "Identification and feeding characteristics of the mixotrophic flagellate Poterioochromonas malhamensis, a microalgal predator isolated from planting water of Pontederia cordata" |
| Author(s): | Yan H; Li Q; Chen B; Shi M; Zhang T; |
| Address: | "College of Life Sciences, Anhui Normal University, 241000, Wuhu, China. Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, Anhui Normal University, Wuhu, 241000, China. College of Life Sciences, Anhui Normal University, 241000, Wuhu, China. zttahnu@163.com" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-022-18614-3 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "The microorganisms and allelochemicals in Pontederia cordata planting water may have a synergistic inhibitory effect on algae. To study this synergy, an algae-inhibiting organism was isolated and identified, and its growth and feeding characteristics were studied. The organism was identified as Poterioochromonas malhamensis yzs924 based on both its morphology and molecular barcoding employing 18S rDNA gene sequences.The growth and feeding of P. malhamensis were affected by environmental factors and the state of its prey. (1) P. malhamensis is a mixotrophic flagellate. Its heterotrophic growth was the fastest in a wheat grain medium, and its growth rate in this study reached 2.5 day(-1). (2) Within a short period of time (2 days), P. malhamensis growth was slower under continuous dark conditions than under alternating light and dark conditions, but it fed on Microcystis aeruginosa more rapidly under dark conditions. (3) High pH was disadvantageous to the growth and grazing of P. malhamensis. When the pH was kept stable at 9, P. malhamensis could not grow continuously. (4) When the initial density of M. aeruginosa was 5 x 10(7) cells/mL or is in a period of decline, P. malhamensis could not remove all M. aeruginosa. The combined use of P. malhamensis and allelochemicals may represent a method of M. aeruginosa control, but this approach requires further research" |
| Keywords: | *Microalgae *Microcystis Pheromones *Pontederiaceae/chemistry *Stramenopiles Water Algae inhibition Allelochemicals Microcystis aeruginosa Pontederia cordata Poterioochromonas malhamensis; |
| Notes: | "MedlineYan, Hao Li, Qin Chen, Bo Shi, Mei Zhang, Tingting eng 31170443/Innovative Research Group Project of the National Natural Science Foundation of China/ Germany 2022/01/28 Environ Sci Pollut Res Int. 2022 Jun; 29(27):40599-40611. doi: 10.1007/s11356-022-18614-3. Epub 2022 Jan 27" |
