Asset Details

Identifier:
FEM_57_f1

Description:
Phylogenetic trees inferred from natural populations of Trichodesmium spp. 16S rDNA and hetR sequence data. The origin of the sample is indicated as AO for the Atlantic Ocean, CS for the Caribbean Sea and PO for the Pacific Ocean. The scale bars indicate the branch length corresponding to the number of substitutions per sequence position. A: Tree constructed using 16S rDNA sequence data and quartet puzzling maximum likelihood. The sequences obtained from natural populations of Trichodesmium spp. colonies collected in the north Caribbean Sea are denoted with CS. The tree was constructed on the basis of 1394 positions, ignoring positions with gaps and sequence ambiguities and using Leptolyngbya sp. PCC 73110 as an outgroup. The observed value of the transition/transversion ratio was 1.13, and was used in the maximum likelihood analysis. The maximum likelihood index of the tree was ln(L)=−3619.47. The numbers at the branches are relative likelihood scores. B: Phylogenetic tree inferred from hetR gene sequence data using quartet puzzling maximum likelihood analysis. A total of 448 aligned positions were used in the analyses, with the transition/transversion ratio set to the observed 1.74. The maximum likelihood index of the tree was ln(L)=−1775.16. The numbers at the branches are the percentage of 1000 quartet puzzling steps that each subset of sequences were grouped together. C: Phylogenetic tree inferred from translated hetR gene sequence data using maximum parsimony analysis. The total 149 amino acid sites had 25 informative sites that were used in the maximum parsimony. The resulting tree required 80 steps. The numbers at the branches are percentages of the bootstrap values from 500 replicates. The origin of the sample is indicated as AO for the central Atlantic Ocean, CS for the northern Caribbean Sea and PO for the southern Pacific Ocean.

License:
Rights Managed

Rights Holder:
John Wiley & Sons, Inc.

License Rights Holder:

Asset Type:
Image

Asset Subtype:
Illustration

Image Orientation:
Portrait

Image Dimensions:
473 x 793

Image File Size:
53.7 KB

Creator:
Sven Janson, Birgitta Bergman, Edward J. Carpenter, Stephen J. Giovannoni, Kevin Vergin

Credit:
Janson, S., Bergman, B., Carpenter, E. J., Giovannoni, S. J., & Vergin, K. (1999). Genetic analysis of natural populations of the marine diazotrophic cyanobacterium Trichodesmium. FEMS Microbiology Ecology, 30(1), 57-65. https://doi.org/10.1111/j.1574-6941.1999.tb00635.x.