Changes in environmental factors and genetic diversity of bacterioplankton communities using 454 pyrosequencing in a semi-closed bay in South Korea

Title
Changes in environmental factors and genetic diversity of bacterioplankton communities using 454 pyrosequencing in a semi-closed bay in South Korea
Author(s)
정승원; 기장서; 이진환
KIOST Author(s)
Jung, Seung Won(정승원)
Publication Year
2015-09-09
Abstract
Bacterioplankton serve a critical function in marine ecosystems (nutrients, dissolved inorganic nitrogen, as well as facilitating interactions among other biota) and can also serve as indicators of the marine environment. Bacterioplankton communities in the surface seawater of a semi-closed bay (Jangmok Bay of South Korea) were analysed using a 16S rDNA multiplex 454 pyrosequencing approach. The following conclusions were drawn: 1) Diversity and abundance are the highest in cold water seasons and lowest in warm water seasons 2) During cold water seasons, alpha-proteobacteria respond rapidly to the pulse of inorganic phosphorus enrichment 3) During warm water seasons, gamma-proteobacteria are the most active type of bacterioplankton present in high dissolved organic carbon, rainfall, chemical oxygen demand, and primary production, but low nutrient concentration 4) Cyanobacteria, a minor group that occupied 4.58% of the total bacterioplankton, was higher in abundance in low temperatures 5) The Cytophaga-Flavobacter group was higher in abundance in nutrient rich conditions including high concentrations of dissolved organic carbon and inorganic nutrients this group also demonstrated a time-lag of declined in abundance following summer phytoplankton blooms 6) Community-level changes in 16S-based diversity and metagenomic profiles are best explained by seasonal patterns. In the absence of predator pressure, the pronoommunities in the surface seawater of a semi-closed bay (Jangmok Bay of South Korea) were analysed using a 16S rDNA multiplex 454 pyrosequencing approach. The following conclusions were drawn: 1) Diversity and abundance are the highest in cold water seasons and lowest in warm water seasons 2) During cold water seasons, alpha-proteobacteria respond rapidly to the pulse of inorganic phosphorus enrichment 3) During warm water seasons, gamma-proteobacteria are the most active type of bacterioplankton present in high dissolved organic carbon, rainfall, chemical oxygen demand, and primary production, but low nutrient concentration 4) Cyanobacteria, a minor group that occupied 4.58% of the total bacterioplankton, was higher in abundance in low temperatures 5) The Cytophaga-Flavobacter group was higher in abundance in nutrient rich conditions including high concentrations of dissolved organic carbon and inorganic nutrients this group also demonstrated a time-lag of declined in abundance following summer phytoplankton blooms 6) Community-level changes in 16S-based diversity and metagenomic profiles are best explained by seasonal patterns. In the absence of predator pressure, the prono
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25314
Bibliographic Citation
Estuarine Coastal and Shelf Science, pp.19, 2015
Publisher
Elsevier
Type
Conference
Language
English
Publisher
Elsevier
Related Researcher
Research Interests

Phytoplatnkon taxonomy,Phytoplatnkon physiology,Phycosphere,식물플랑크톤 분류,식물플랑크톤 생리,식물플랑크톤, 바이러스, 박테리아 관계

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse