Ecological effects of Ulva prolifera green tide on bacterial community structure in Qingdao offshore environment

Qu, Tongfei; Zhao, Xinyu; Hao, Ya; Zhong, Yi; Chen, Guan; Hou, Chen; Tang, Xuexi; Wang, Ying

doi:10.1016/j.chemosphere.2019.125477

Cited by 28 publications

(11 citation statements)

References 33 publications

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“…The development of high-throughput sequencing technology makes it possible to characterize the composition of Ulva epiphytic microbiota. To our knowledge, the current research on the epiphytic microbiota of Ulva mainly focuses on the functional characteristics of microorganisms that responsible for Ulva morphogenesis and the different species composition that responsible for Ulva surface morphogenesis during the green tide (Nakanishi et al, 1996;Dobretsov and Qian, 2002;Spoerner et al, 2012;Ghaderiardakani et al, 2017Ghaderiardakani et al, , 2019Weiss et al, 2017;Alsufyani et al, 2020;Chen et al, 2020;Gianmaria et al, 2020;Inaba et al, 2020;Juhmani et al, 2020;Liu et al, 2020;Qu et al, 2020). However, the biodiversity and functional relationship of epiphytic microbiota harbored by Ulva have not been fully explored.…”

Section: Introductionmentioning

confidence: 99%

Hyunsoonleella sp. HU1-3 Increased the Biomass of Ulva fasciata

et al. 2022

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Green algae are photosynthetic organisms and play an important role in coastal environment. The microbial community on the surface of green algae has an effect on the health and nutrition of the host. However, few species of epiphytic microbiota have been reported to play a role in promoting the growth of algae. In this study, 16S rDNA sequencing was used to study the changes of microbial composition on the surface of Ulva fasciata at different growth stages. Some growth promoting bacteria were identified. The possible growth-promoting behavior of the strains were verified by co-culture of pure bacteria obtained from the surface of U. fasciata with its sterile host. Among the identified species, a new bacterial species, Hyunsoonleella sp. HU1-3 (belonging to the family Flavobacteriaceae) significantly promoted the growth of U. fasciata. The results also showed that there were many genes involved in the synthesis of growth hormone and cytokinin in the genome of Hyunsoonleella sp. HU1-3. This study identified the bacterium Hyunsoonleella sp. HU1-3 for the first time, in which this bacterium has strong growth-promoting effects on U. fasciata. Our findings not only provide insights on the establishment of the surface microbiota of U. fasciata, but also indicate that Hyunsoonleella sp. HU1-3 is one of the important species to promote the growth of U. fasciata.

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Section: Introductionmentioning

confidence: 99%

Hyunsoonleella sp. HU1-3 Increased the Biomass of Ulva fasciata

et al. 2022

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“…U. prolifera generally floats on the surface of seawater, posing a serious threat to coastal tourism, fishery and environment [3,4]. The outbreak of U. prolifera green tide affects not only the nutrient contents of seawater but also the interactions among marine organisms, and further influences the marine biogeochemical cycles [5][6][7][8]. During the decomposing process of U. prolifera, it can consume dissolved oxygen resulting in water hypoxia or even anoxia, and also release hydrogen sulfide into seawater, which is hazardous to marine organisms [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…It is reported that U. prolifera may settle in seawater southeast of the Shandong Peninsula, particularly along the coastal Qingdao areas [20]. Variations in bacterial community during the U. prolifera green tide have been reported successively [8,[21][22][23][24][25]. For example, Zhang et al [21] found that the bacterial community varied during an U. prolifera green tide, and the abundance of nitrogen-fixing bacteria dramatically increased during the outbreak phase.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Zhang et al [21] found that the bacterial community varied during an U. prolifera green tide, and the abundance of nitrogen-fixing bacteria dramatically increased during the outbreak phase. U. prolifera green tide in coastal Qingdao areas led to a reduction in bacterial diversity and abundance, and some functional groups, such as sulfate-reducing bacteria and Cytophaga-Flavobacter-Bacteroides, were also affected by the U. prolifera green tide [8]. In recent years, microbial interactions have been considered to be vital drivers in determining the algal blooms [26].…”

Section: Introductionmentioning

confidence: 99%

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Variations in Marine Bacterial and Archaeal Communities during an Ulva prolifera Green Tide in Coastal Qingdao Areas

Zhao

Wang

et al. 2022

Microorganisms

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Green tides caused by Ulva prolifera occur annually in the Yellow Sea, potentially influencing the marine microorganisms. Here, we focused on the variations in marine bacterial and archaeal communities during an U. prolifera green tide in coastal Qingdao areas with Illumina high-throughput sequencing analysis. Our results revealed that the diversity and structure of bacterial and archaeal communities, as well as the organization and structure of microbial co-occurrence networks, varied during the green tide. The decline phase may be favorable to the bacterial and archaeal diversity and richness. The bacterial community, as well as the archaeal community, showed clear variations between the outbreak and decline phases. A simpler and less connected microbial co-occurrence network was observed during the outbreak phase compared with the decline phase. Flavobacteriales and Rhodobacterales separately dominated the bacterial community during the outbreak and decline phase, and Marine Group II (MGII) dominated the archaeal community during the green tide. Combined with microbial co-occurrence network analysis, Flavobacteriales, Rhodobacterales and MGII may be important organisms during the green tide. Temperature, chlorophyll a content and salinity may have an important impact on the variations in bacterial and archaeal communities during the green tide.

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“…During U. prolifera decomposition, large amounts of nutrients were released into the sea, which altered the physico-chemical environment of the sea water. Some toxic substances such as H2S were also released, affecting the growth of shellfish and other organisms, threatening the sustainable development of aquaculture, and endangering the marine ecological security in coastal areas [34,35]. In addition, the landing of U. prolifera leads to serious impacts on the landscape, ecological environment, and human activities, causing serious socioeconomic losses [22,36].…”

Section: Introductionmentioning

confidence: 99%

Monitoring the Dissipation of the Floating Green Macroalgae Blooms in the Yellow Sea (2007–2020) on the Basis of Satellite Remote Sensing

Zheng

et al. 2021

Remote Sensing

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Large scale green macroalgae blooms (MABs) caused by Ulva prolifera have occurred regularly in the Yellow Sea since 2007. In the MAB dissipation phase, the landing or sinking and decomposition of U. prolifera would alter the physical-chemical environment of seawater and cause ecological, environmental, and economic problems. To understand MAB dissipation features, we used multiple sensors to analyze the spatiotemporal variation of the MAB dissipation phase in the southern Yellow Sea. The results show the variation in the daily dissipation rate (DR) was inconsistent from year to year. Based on the DR variation, a simple method of estimating MAB dissipation days was proposed for the first time. Verification results of the method, from 2018 to 2020, showed the estimated dissipation days were relatively consistent with the results obtained by remote sensing imagery. From 2007 to 2020, the order in which macroalgae landed in the coastal cities of Shandong Peninsula can be roughly divided into two types. In one type, the macroalgae landed first in Rizhao, followed by Qingdao, Rushan, and Haiyang. In the other type, they landed in the reverse order. The MABs annual distribution density showed significant differences in the southern Yellow Sea. These results provided a basis for evaluating the MABs’ impact on marine ecology and formulating the green-tide prevention and control strategies.

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Ecological effects of Ulva prolifera green tide on bacterial community structure in Qingdao offshore environment

Cited by 28 publications

References 33 publications

Hyunsoonleella sp. HU1-3 Increased the Biomass of Ulva fasciata

Hyunsoonleella sp. HU1-3 Increased the Biomass of Ulva fasciata

Variations in Marine Bacterial and Archaeal Communities during an Ulva prolifera Green Tide in Coastal Qingdao Areas

Monitoring the Dissipation of the Floating Green Macroalgae Blooms in the Yellow Sea (2007–2020) on the Basis of Satellite Remote Sensing

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