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Publication Type J
Authors Bueno, M., M. L. Lendinez, C. Aparicio and M. P. Cordovilla
Title Germination and growth of Atriplex prostrata and Plantago coronopus: Two strategies to survive in saline habitats
Source Flora
Author Keywords Proline Putrescine Salt stress Seedlings Spermidine Spermine salt stress seed-germination arabidopsis-thaliana osmotic adjustment cakile-maritima sodium-chloride ion relations tolerance polyamines halophyte
Abstract We investigated the effects of NaC1 on germination, germination rate, growth, proline content, polyamine levels (putrescine, spermidine and spermine) and total polyamines in Atriplex prostrata and Plantago coronopus. The seeds collected from Brujuelo (salt marshes, Jaen, southern Spain) were germinated under control (water) and saline conditions (50, 100, and 200 mM NaCl) for 20 days at 25 degrees C. Salinity decreased germination percentage and the germination rate in A. prostrata, and P. coronopus with increasing salt concentrations. In seedlings at day 6 and 10 of the experiment, both the length and fresh mass increased in A. prostrata for all saline treatments with respect to control, whereas in P. coronopus, only fresh mass increased with 50 and 100 mM NaC1, indicating its lower salinity tolerance. With respect to proline, the maximum increase occurred with 200 mM NaC1 in A. prostrata; however in P. coronopus the values were low and without significant differences between treatments. The polyamine levels changed, in P. coronopus spermidine and spermine increased with salt, while in A. prostrata putrescine and spermidine decreased. These results indicate that the increase of proline was accompanied by a decrease of total polyamines (putrescine + spermidine + spermine) in A. prostrata while P. coronopus had high total polyamine levels with low values of proline, demonstrating that these plants use different strategies to adapt to saline environments. (C) 2016 Elsevier GmbH. All rights reserved.
Author Address [Bueno, Milagros; Lendinez, Maria L.; Aparicio, Carolina; Cordovilla, Maria P.] UJA, Fac Expt Sci, Dept Anim Biol, Lab Bot & Plant Physiol, Jaen, Spain. Bueno, M (reprint author), UJA, Fac Expt Sci, Dept Anim Biol, Lab Bot & Plant Physiol, Jaen, Spain. mbueno@ujaen.es; lulendi@ujaen.es; caro.aparicio@telefonica.net; mpilar@ujaen.es
ISSN 0367-2530
ISBN 0367-2530
29-Character Source Abbreviation Flora
Publication Date Feb
Year Published 2017
Volume 227
Beginning Page 56-63
Digital Object Identifier (DOI) 10.1016/j.flora.2016.11.019
Unique Article Identifier WOS:000397180000007

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