Responses to salt stress in the halophyte Plantago crassifolia (Plantaginaceae) |
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| Authors: | Oscar Vicente Monica Boscaiu Miguel ngel Naranjo Elena Estrelles Jos María Bells Pilar Soriano |
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| Institution: | a Instituto de Biología Molecular y Celular de Plantas, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022, Valencia, Spain;b Departamento de Ecosistemas Agroforestales, Escuela Politécnica Superior de Gandia, Universidad Politécnica de Valencia, Carretera Nazaret-Oliva s/n, 46730 Gandía, Valencia, Spain;c Jardín Botánico, Universidad de Valencia, Calle Quart 80, 46008, Valencia, Spain |
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| Abstract: | General responses to salt stress have been investigated in the halophyte Plantago crassifolia. Seed germination was strongly inhibited by NaCl, although seed viability and germination capacity were not affected by salt pre-treatments. A concentration-dependent inhibition of plant growth was observed in the presence of NaCl, which was accompanied by the accumulation of Na+ ions in the leaves, as determined by cation exchange HPLC. A 20-fold increase of proline content in leaves was observed when plants were treated with 500 m
NaCl, suggesting a protective role against high salinity stress for this amino acid, whose possible mechanism of action is discussed. |
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| Keywords: | Plantago crassifolia Halophytes Seed germination Plant growth Osmolytes Proline Sorbitol Ion exchange HPLC |
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