Details
| Original language | English |
|---|---|
| Pages (from-to) | 497-504 |
| Number of pages | 8 |
| Journal | Proceedings of the National Academy of Sciences India Section B - Biological Sciences |
| Volume | 88 |
| Issue number | 2 |
| Publication status | Published - 1 Jun 2018 |
Abstract
Taxonomic challenges of seagrasses were met by using 18S ribosomal subunit of ribosomal deoxyribonucleic acid (18S rDNA) sequence data of 14 seagrass species from India and two temperate species from Germany. The phylogenetic trees presented are based on the 18S rDNA sequence analysis of 41 nucleotide sequences including sequences obtained in the present study as well as previously published sequences of freshwater and saltmarsh plants, and seagrasses for identifying the evolutionary lineage. The 18S rDNA data indicates independent origin of temperate and tropical seagrasses with the genus Halophila as the intermediate group for both the regions. Based on the complex morphological structures the Halophila group represents the basal form among seagrasses whereas Enhalus is considered to be the most recently originated seagrass species. In that context, the marine Hydrocharitaceae group of Enhalus, Thalassia and Halophila has been proposed to be separated into two groups such as Enhalus/Thalassia and Halophila subfamilies. Hence, the present systematic studies warrant a revised taxonomy for seagrasses, which better reflects the phylogenetic results obtained from molecular and conventional data.
Keywords
- Molecular taxonomy, Phylogenetic relationship, Seagrasses, Species identification
ASJC Scopus subject areas
Sustainable Development Goals
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In: Proceedings of the National Academy of Sciences India Section B - Biological Sciences, Vol. 88, No. 2, 01.06.2018, p. 497-504.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tracking the Phylogeny of Seagrasses
T2 - Inferred from 18S rRNA Gene and Ancestral State Reconstruction of Morphological Data
AU - Dilipan, Elangovan
AU - Lucas, Christina
AU - Papenbrock, Jutta
AU - Thangaradjou, Thirunavukarassu
N1 - Funding information: Acknowledgments The authors thank the Director and Dean, Faculty of Marine Sciences and authorities of Annamalai University, India, and Institute of Botany, Leibniz University Hannover, Germany for providing facilities and support. Mr. E. Dilipan is thankful to the DAAD and the Leibniz University Hannover for financial support through ‘‘A new passage to India’’ program. The contents and views expressed in the manuscript are of individual authors and not reflecting the views and position of the institutions they belong.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Taxonomic challenges of seagrasses were met by using 18S ribosomal subunit of ribosomal deoxyribonucleic acid (18S rDNA) sequence data of 14 seagrass species from India and two temperate species from Germany. The phylogenetic trees presented are based on the 18S rDNA sequence analysis of 41 nucleotide sequences including sequences obtained in the present study as well as previously published sequences of freshwater and saltmarsh plants, and seagrasses for identifying the evolutionary lineage. The 18S rDNA data indicates independent origin of temperate and tropical seagrasses with the genus Halophila as the intermediate group for both the regions. Based on the complex morphological structures the Halophila group represents the basal form among seagrasses whereas Enhalus is considered to be the most recently originated seagrass species. In that context, the marine Hydrocharitaceae group of Enhalus, Thalassia and Halophila has been proposed to be separated into two groups such as Enhalus/Thalassia and Halophila subfamilies. Hence, the present systematic studies warrant a revised taxonomy for seagrasses, which better reflects the phylogenetic results obtained from molecular and conventional data.
AB - Taxonomic challenges of seagrasses were met by using 18S ribosomal subunit of ribosomal deoxyribonucleic acid (18S rDNA) sequence data of 14 seagrass species from India and two temperate species from Germany. The phylogenetic trees presented are based on the 18S rDNA sequence analysis of 41 nucleotide sequences including sequences obtained in the present study as well as previously published sequences of freshwater and saltmarsh plants, and seagrasses for identifying the evolutionary lineage. The 18S rDNA data indicates independent origin of temperate and tropical seagrasses with the genus Halophila as the intermediate group for both the regions. Based on the complex morphological structures the Halophila group represents the basal form among seagrasses whereas Enhalus is considered to be the most recently originated seagrass species. In that context, the marine Hydrocharitaceae group of Enhalus, Thalassia and Halophila has been proposed to be separated into two groups such as Enhalus/Thalassia and Halophila subfamilies. Hence, the present systematic studies warrant a revised taxonomy for seagrasses, which better reflects the phylogenetic results obtained from molecular and conventional data.
KW - Molecular taxonomy
KW - Phylogenetic relationship
KW - Seagrasses
KW - Species identification
UR - http://www.scopus.com/inward/record.url?scp=85046902441&partnerID=8YFLogxK
U2 - 10.1007/s40011-016-0780-5
DO - 10.1007/s40011-016-0780-5
M3 - Article
AN - SCOPUS:85046902441
VL - 88
SP - 497
EP - 504
JO - Proceedings of the National Academy of Sciences India Section B - Biological Sciences
JF - Proceedings of the National Academy of Sciences India Section B - Biological Sciences
SN - 0369-8211
IS - 2
ER -