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Physiological adjustment to salt stress in Jatropha curcas is associated with accumulation of salt ions, transport and selectivity of K+, osmotic adjustment and K+/Na+ homeostasis.
Plant Biol (Stuttg). 2015 Sep; 17(5):1023-9.PB

Abstract

This study assessed the capacity of Jatropha curcas to physiologically adjust to salinity. Seedlings were exposed to increasing NaCl concentrations (25, 50, 75 and 100 mm) for 15 days. Treatment without NaCl was adopted as control. Shoot dry weight was strongly reduced by NaCl, reaching values of 35% to 65% with 25 to 100 mm NaCl. The shoot/root ratio was only affected with 100 mm NaCl. Relative water content (RWC) increased only with 100 mm NaCl, while electrolyte leakage (EL) was much enhanced with 50 mm NaCl. The Na(+) transport rate to the shoot was more affected with 50 and 100 mm NaCl. In parallel, Cl(-) transport rate increased with 75 and 100 mm NaCl, while K(+) transport rate fell from 50 mm to 100 mm NaCl. In roots, Na(+) and Cl(-) transport rates fell slightly only in 50 mm (to Na(+)) and 50 and 100 mm (to Cl(-)) NaCl, while K(+) transport rate fell significantly with increasing NaCl. In general, our data demonstrate that J. curcas seedlings present changes in key physiological processes that allow this species to adjust to salinity. These responses are related to accumulation of Na(+) and Cl(-) in leaves and roots, K(+)/Na(+) homeostasis, transport of K(+) and selectivity (K-Na) in roots, and accumulation of organic solutes contributing to osmotic adjustment of the species.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Silva EN
Faculdade de Educação, Ciências e Letras do Sertão, Central, Universidade Estadual do Ceará, Quixadá, Ceará, Brazil.
Silveira JA
Departamento de Bioquímica e Biologia Molecular/Instituto Nacional de Ciência e Tecnologia em Salinidade (INCTsal/CNPq), Universidade Federal do Ceará, Fortaleza, Ceará, Brazil.
Rodrigues CR
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil. Faculdade Leão Sampaio, Juazeiro do Norte, CE, Brazil.
Viégas RA
Departamento de Engenharia Florestal da UFPB, Universidade Federal de Campina Grande, Patos, Paraíba, Brazil.

MeSH

Biological TransportBiomassChloridesChlorophyllHomeostasisJatrophaOsmotic PressurePlant LeavesPlant RootsPlant ShootsPotassiumSalinitySalt ToleranceSeedlingsSodium ChlorideStress, PhysiologicalWater

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25865670

Citation

Silva, E N., et al. "Physiological Adjustment to Salt Stress in Jatropha Curcas Is Associated With Accumulation of Salt Ions, Transport and Selectivity of K+, Osmotic Adjustment and K+/Na+ Homeostasis." Plant Biology (Stuttgart, Germany), vol. 17, no. 5, 2015, pp. 1023-9.
Silva EN, Silveira JA, Rodrigues CR, et al. Physiological adjustment to salt stress in Jatropha curcas is associated with accumulation of salt ions, transport and selectivity of K+, osmotic adjustment and K+/Na+ homeostasis. Plant Biol (Stuttg). 2015;17(5):1023-9.
Silva, E. N., Silveira, J. A., Rodrigues, C. R., & Viégas, R. A. (2015). Physiological adjustment to salt stress in Jatropha curcas is associated with accumulation of salt ions, transport and selectivity of K+, osmotic adjustment and K+/Na+ homeostasis. Plant Biology (Stuttgart, Germany), 17(5), 1023-9. https://doi.org/10.1111/plb.12337
Silva EN, et al. Physiological Adjustment to Salt Stress in Jatropha Curcas Is Associated With Accumulation of Salt Ions, Transport and Selectivity of K+, Osmotic Adjustment and K+/Na+ Homeostasis. Plant Biol (Stuttg). 2015;17(5):1023-9. PubMed PMID: 25865670.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physiological adjustment to salt stress in Jatropha curcas is associated with accumulation of salt ions, transport and selectivity of K+, osmotic adjustment and K+/Na+ homeostasis. AU - Silva,E N, AU - Silveira,J A G, AU - Rodrigues,C R F, AU - Viégas,R A, Y1 - 2015/05/20/ PY - 2014/10/14/received PY - 2015/04/08/accepted PY - 2015/4/14/entrez PY - 2015/4/14/pubmed PY - 2016/7/9/medline KW - Ion accumulation KW - Jatropha curcas KW - organic solutes KW - osmotic adjustment KW - salinity SP - 1023 EP - 9 JF - Plant biology (Stuttgart, Germany) JO - Plant Biol (Stuttg) VL - 17 IS - 5 N2 - This study assessed the capacity of Jatropha curcas to physiologically adjust to salinity. Seedlings were exposed to increasing NaCl concentrations (25, 50, 75 and 100 mm) for 15 days. Treatment without NaCl was adopted as control. Shoot dry weight was strongly reduced by NaCl, reaching values of 35% to 65% with 25 to 100 mm NaCl. The shoot/root ratio was only affected with 100 mm NaCl. Relative water content (RWC) increased only with 100 mm NaCl, while electrolyte leakage (EL) was much enhanced with 50 mm NaCl. The Na(+) transport rate to the shoot was more affected with 50 and 100 mm NaCl. In parallel, Cl(-) transport rate increased with 75 and 100 mm NaCl, while K(+) transport rate fell from 50 mm to 100 mm NaCl. In roots, Na(+) and Cl(-) transport rates fell slightly only in 50 mm (to Na(+)) and 50 and 100 mm (to Cl(-)) NaCl, while K(+) transport rate fell significantly with increasing NaCl. In general, our data demonstrate that J. curcas seedlings present changes in key physiological processes that allow this species to adjust to salinity. These responses are related to accumulation of Na(+) and Cl(-) in leaves and roots, K(+)/Na(+) homeostasis, transport of K(+) and selectivity (K-Na) in roots, and accumulation of organic solutes contributing to osmotic adjustment of the species. SN - 1438-8677 UR - https://www.unboundmedicine.com/medline/citation/25865670/Physiological_adjustment_to_salt_stress_in_Jatropha_curcas_is_associated_with_accumulation_of_salt_ions_transport_and_selectivity_of_K+_osmotic_adjustment_and_K+/Na+_homeostasis_ DB - PRIME DP - Unbound Medicine ER -