Biotechnology Bulletin ›› 2024, Vol. 40 ›› Issue (1): 32-44.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0652

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Research Progresses and Application in the Growth-promoting Effect of Symbiotic and Epiphytic Bacteria on Green Tide-causing Ulva prolifera

BI Fang-ling1(), ZHAO Shuang1,2, LI Bin1, LI Ai-qin1, ZHANG Jian-heng1,3,4, HE Pei-min1,3,4()   

  1. 1. College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306
    2. Ocean College, Fujian Polytechnic Normal University, Fujian 350300
    3. Key Laboratory of Fishery Genetic Resources Development and Utilization, Ministry of Education, Shanghai Ocean University, Shanghai 201306
    4. Water Environment and Ecology Engineering Center of Higher Education, Shanghai 201306
  • Received:2023-07-10 Online:2024-01-26 Published:2024-02-06
  • Contact: HE Pei-min E-mail:2403636092@qq.com;pmhe@shou.edu.cn

Abstract:

The migration and large-scale outbreak of green tides are not only related to the biological characteristics such as the strong stress resistance of algae and the environmental conditions of the sea area, but also inseparable from the participation of algal microorganisms. The microbial community plays an important role in algal growth and extinction. Under different environmental conditions, the community structure of symbiotic and epiphytic microorganisms of Ulva prolifera are diverse. The promotion to algae growth is mainly reflected in the processes of algae morphogenesis, growth, nutrient absorption and photosynthesis. During the occurrence of algal blooms, U. prolifera could help the algae to efficiently absorb nutrients, promote algae proliferation, and thus increase the formation of green tides. Based on previous researching results, we summarized the current research status of symbiotic and epiphytic bacteria of U. prolifera, the dominant species of green tide, described the establishment process of the separation technology of symbiotic and epiphytic bacteria of U. prolifera, and pointed out the importance of molecular biology techniques such as high-throughput sequencing in the analysis of microbial community structure and diversity, analyzed the influence of these bacteria on the physiological characteristics of the growth, reproduction, morphogenesis of U. prolifera and the outbreak of the green tides, and explored the utilization value of symbiotic and epiphytic bacteria in future production and life, aiming to express new ideas for predicting and preventing and controlling the outbreak of green tides and for the algal utilization as a resource.

Key words: green tide, Ulva prolifera, symbiotic and epiphytic bacterium, diversity, morphology, growth and development, propagation, stress resistance