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Publication Type J
Authors Benjamin, J. J., L. Lucini, S. Jothiramshekar and A. Parida
Title Metabolomic insights into the mechanisms underlying tolerance to salinity in different halophytes
Source Plant Physiology and Biochemistry
Language English
Author Keywords Salicornia Suaeda Sesuvium Plant abiotic stress Osmolytes Oxidative stress sesuvium-portulacastrum stress tolerance plasma-membrane abiotic stress salt tolerance plants accumulation flavonoids spermidine responses Plant Sciences
Abstract Salinity is among the most detrimental and diffuse environmental stresses. Halophytes are plants that developed the ability to complete their life cycle under high salinity. In this work, a mass spectrometric metabolomic approach was applied to comparatively investigate the secondary metabolism processes involved in tolerance to salinity in three halophytes, namely S. brachiata, S. maritima and S. portulacastrum. Regarding osmolytes, the level of proline was increased with NaCl concentration in S. portulacastrum and roots of S. maritima, whereas glycine betaine and polyols were accumulated in S. maritima and S. brachiata. Important differences between species were also found regarding oxidative stress balance. In S. brachiata, the amount of flavonoids and other phenolic compounds increased in presence of NaCl, whereas these metabolites were down regulated in S. portulacastrum, who accumulated carotenoids. Furthermore, distinct impairment of membrane lipids, hormones, alkaloids and terpenes was observed in our species under salinity. Finally, several other nitrogen containing compounds were involved in response to salinity, including amino acids, serotonin and polyamine conjugates. In conclusion, metabolomics highlighted that the specific mechanism each species adopted to achieve acclimation to salinity differed in the three halophytes considered, although response osmotic stress and oxidative imbalance have been confirmed as the key processes underlying NaCl tolerance.
Author Address [Benjamin, Jenifer Joseph; Jothiramshekar, Saranya; Parida, Ajay] MS Swaminathan Res Fdn, Dept Plant Mol Biol, Taramani Inst Area, 3 Cross St, Chennai 600113, India. [Lucini, Luigi] Univ Cattolica Sacro Cuore, Res Ctr Nutrigen & Prote, Dept Sustainable Food Proc, Piacenza, Italy. [Parida, Ajay] Govt India, Dept Biotechnol, Inst Life Sci, Bhubaneswar 751023, Odisha, India. Lucini, L (reprint author), Via Emilia Parmense 84, I-29122 Piacenza, Italy. luigi.lucini@unicatt.it
ISSN 0981-9428
ISBN 0981-9428
29-Character Source Abbreviation Plant Physiol. Biochem.
Publication Date Feb
Year Published 2019
Volume 135
Beginning Page 528-545
Digital Object Identifier (DOI) 10.1016/j.plaphy.2018.11.006
Unique Article Identifier WOS:000457659900057
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