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dc.contributor.authorGupta, V.
dc.contributor.authorKushwaha, H.R.
dc.date.accessioned2018-06-06
dc.date.accessioned2018-10-23T09:24:51Z
dc.date.available2017-11-27
dc.date.available2018-10-23T09:24:51Z
dc.date.issued2017
dc.identifier.citationScientific Reports, vol.7(1); 2017; Article no: 16430
dc.identifier.issn2045-2322
dc.identifier.urihttps://doi.org/10.1038/s41598-017-15994-2
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7762
dc.description.abstractThe survival of wetland plant species largely relies on physiological adaptations essential for submergence and desiccation. Intertidal seaweeds, unlike terrestrial plants, have unique adaptations to submergence and can also sustain desiccation arising from tidal rhythms. This study determined the differential metabolic regulations in the inter-tidal seaweed species Ulva lactuca against the submergence and desiccation. During desiccation, the relative water content of the algal thalli declined with concomitant increase in reactive oxygen species (ROS) and lipid peroxidation. Nevertheless, the trends reversed during recovery on re-submergence and attained homeostasis. Metabolite profiling of U. lactuca revealed desiccation induced balance in energy reserve utilization by adjusting carbohydrate metabolism and switch over to ammonia metabolism. Upon re-submergence, thalli showed an increase in fermentative metabolites, pyruvate-alanine conversion, and the GABA shunt. Prolonged submergence induced substrate level phosphorylation mediated sugar biosynthesis while continuing the alternative carbon flux through fermentative metabolism, an increase in osmoprotectants glycine and betaine, sulfur bearing compounds cysteine and hypotaurine, and phenolic compound coniferaldehyde. The determined metabolic regulations in U. lactuca for submergence tolerance provide insights into potential evolutionarily conserved protective mechanisms across the green lineage and also highlights the possible role of sulfur oxoforms as strong free radical scavengers.
dc.language.isoen
dc.publisherNature Publishing Group
dc.relation.ispartofSci Rep-UK
dc.relation.isreferencedbySCI
dc.titleMetabolic regulatory oscillations in intertidal green seaweed Ulva lactuca against tidal cycles
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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