Abstract
Indian lotus (Nelumbo nucifera) is one of the dominant aquatic plants cultivated in Dal Lake, situated at 1586 m above mean sea level (MSL) in the northeast of Srinagar, Kashmir. Despite their economic and ecological role, the microbial communities associated with the lotus plant are still unexplored. In this study, we investigated the prokaryotic communities on surfaces of different lotus microhabitats (roots, rhizome, leaves, flowers, and fruits), lake water, and sediments using 16S rRNA gene amplicon sequencing. Overall, prokaryotic diversity decreased significantly on the surface of lotus microhabitats in comparison to the lake water and sediments. Among the microhabitats of lotus, roots and leaves harbored more diverse communities in comparison to rhizomes, fruits, and flowers. A total of 98 genera were shared by lotus and the Dal Lake sediments and water. However, significant differences were found in their relative abundance; for example, Pseudomonas was the most dominant genus on the majority of lotus microhabitats. On the other hand, Flavobacterium was highly abundant in the lake water, while a higher abundance of Acinetobacter was recorded in sediments. Additionally, we also noted the presence of potential human pathogenic genera including Escherichia-Shigella, Enterobacter, Pantoea, Raoultella, Serratia, and Sphingomonas on the lotus microhabitats. Predicted functions of prokaryotic communities revealed a higher abundance of genes associated with nutrient uptake in the microhabitats of the lotus. This study offered first-hand information on the prokaryotic communities harbored by lotus plants and water and sediments of the Dal Lake and demonstrated the adaptation of diverse communities to microhabitats of lotus.
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Data availability
The sequence data is available at NCBI SRA submission with SRA no. SRP335402.
Abbreviations
- PCoA :
-
Principal co-ordinate analysis
- NMDS :
-
Non-metric multidimensional scaling
- OTUs :
-
Operational taxonomic unit
- ANOVA :
-
Analysis of variance
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Acknowledgements
The authors acknowledge the Director, NCCS, Pune.
Funding
This work was supported by funding from the Department of Biotechnology (BT/Coord. II/01/03/2016), Government of India. B.A.M. also acknowledges the funding under Energy Bioscience Overseas Fellowship.
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Chaudhari, D., Kiran, S., Choudhary, A. et al. Prokaryotic communities adapted to microhabitats on the Indian lotus (Nelumbo nucifera) growing in the high-altitude urban Dal Lake. Int Microbiol 26, 257–267 (2023). https://doi.org/10.1007/s10123-022-00297-y
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DOI: https://doi.org/10.1007/s10123-022-00297-y