Marine Group II Euryarchaeota Contribute to the Archaeal Lipid Pool in Northwestern Pacific Ocean Surface Waters

Ma，Cenling1; Coffinet，Sarah2; Lipp，Julius S.2; Hinrichs，Kai Uwe2; Zhang，Chuanlun3,4

2020-06-05

10.3389/fmicb.2020.01034

Frontiers in Microbiology   影响因子和分区

1664-302X

1664-302X

Planktonic archaea include predominantly Marine Group I Thaumarchaeota (MG I) and Marine Group II Euryarchaeota (MG II), which play important roles in the oceanic carbon cycle. MG I produce specific lipids called isoprenoid glycerol dibiphytanyl glycerol tetraethers (GDGTs), which are being used in the sea surface temperature proxy named TEX. Although MG II may be the most abundant planktonic archaeal group in surface water, their lipid composition remains poorly characterized because of the lack of cultured representatives. Circumstantial evidence from previous studies of marine suspended particulate matter suggests that MG II may produce both GDGTs and archaeol-based lipids. In this study, integration of the 16S rRNA gene quantification and sequencing and lipid analysis demonstrated that MG II contributed significantly to the pool of archaeal tetraether lipids in samples collected from MG II-dominated surface waters of the Northwestern Pacific Ocean (NWPO). The archaeal lipid composition in MG II-dominated NWPO waters differed significantly from that of known MG I cultures, containing relatively more 2G-OH-, 2G- and 1G- GDGTs, especially in their acyclic form. Lipid composition in NWPO waters was also markedly different from MG I-dominated surface water samples collected in the East China Sea. GDGTs from MG II-dominated samples seemed to respond to temperature similarly to GDGTs from the MG I-dominated samples, which calls for further study using pure cultures to determine the exact impact of MG II on GDGT-based proxies.

Archaeal lipids East China Sea Marine Group I Thaumarchaeota Marine Group II Euryarchaeota Northwestern Pacific Ocean Ring Index

SCI

英语

通讯

State Key R&D Project of China[2016YFA0601101][2018YFA0605800] ; National Natural Science Foundation of China[91851210][41530105][41673073] ; Key Project of Natural Science Foundation of Guangdong Province[2018B030311016] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[K19313901] ; Deutsche Forschungsgemeinschaft through the Gottfried Wilhelm Leibniz Program[HI 616-14-1]

Microbiology

Microbiology

WOS:000543331100001

FRONTIERS MEDIA SA

2-s2.0-85086777175

Scopus

1.State Key Laboratory of Marine Geology,Tongji University,Shanghai,China
2.Organic Geochemistry Group,MARUM Center for Marine Environmental Sciences and Department of Geosciences,University of Bremen,Bremen,Germany
3.Shenzhen Key Laboratory of Marine Archaea Geo-Omics,Southern University of Science and Technology,Shenzhen,China
4.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),Guangzhou,China

Ma，Cenling,Coffinet，Sarah,Lipp，Julius S.,et al. Marine Group II Euryarchaeota Contribute to the Archaeal Lipid Pool in Northwestern Pacific Ocean Surface Waters[J]. Frontiers in Microbiology,2020,11.

Ma，Cenling,Coffinet，Sarah,Lipp，Julius S.,Hinrichs，Kai Uwe,&Zhang，Chuanlun.(2020).Marine Group II Euryarchaeota Contribute to the Archaeal Lipid Pool in Northwestern Pacific Ocean Surface Waters.Frontiers in Microbiology,11.

Ma，Cenling,et al."Marine Group II Euryarchaeota Contribute to the Archaeal Lipid Pool in Northwestern Pacific Ocean Surface Waters".Frontiers in Microbiology 11(2020).