Salinity adaptation and the contribution of parental environmental effects in medicago truncatula

Ken S. Moriuchi, Maren L. Friesen, Matilde A. Cordeiro, Mounawer Badri, Wendy T. Vu, Bradley Main, Mohamed Elarbi Aouani, Sergey V. Nuzhdin, Sharon Y. Strauss, Eric J.B. Von Wettberg

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

High soil salinity negatively influences plant growth and yield. Some taxa have evolved mechanisms for avoiding or tolerating elevated soil salinity, which can be modulated by the environment experienced by parents or offspring. We tested the contribution of the parental and offspring environments on salinity adaptation and their potential underlying mechanisms. In a two-generation greenhouse experiment, we factorially manipulated salinity concentrations for genotypes of Medicago truncatula that were originally collected from natural populations that differed in soil salinity. To compare population level adaptation to soil salinity and to test the potential mechanisms involved we measured two aspects of plant performance, reproduction and vegetative biomass, and phenological and physiological traits associated with salinity avoidance and tolerance. Saline-origin populations had greater biomass and reproduction under saline conditions than non-saline populations, consistent with local adaptation to saline soils. Additionally, parental environmental exposure to salt increased this difference in performance. In terms of environmental effects on mechanisms of salinity adaptation, parental exposure to salt spurred phenological differences that facilitated salt avoidance, while offspring exposure to salt resulted in traits associated with greater salt tolerance. Non-saline origin populations expressed traits associated with greater growth in the absence of salt while, for saline adapted populations, the ability to maintain greater performance in saline environments was also associated with lower growth potential in the absence of salt. Plastic responses induced by parental and offspring environments in phenology, leaf traits, and gas exchange contribute to salinity adaptation in M. truncatula. The ability of plants to tolerate environmental stress, such as high soil salinity, is PLOS ONE likely modulated by a combination of parental effects and within-generation phenotypic plasticity, which are likely to vary in populations from contrasting environments.

Original languageEnglish (US)
Article numbere0150350
JournalPLoS One
Volume11
Issue number3
DOIs
StatePublished - Mar 1 2016
Externally publishedYes

Fingerprint

Medicago truncatula
Salinity
Environmental impact
Salts
soil salinity
salinity
salts
Soils
Soil
Population
Biomass
Reproduction
saline soils
biomass
Greenhouses
Growth
phenotypic plasticity
salt tolerance
greenhouse experimentation
Salt-Tolerance

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Moriuchi, K. S., Friesen, M. L., Cordeiro, M. A., Badri, M., Vu, W. T., Main, B., ... Von Wettberg, E. J. B. (2016). Salinity adaptation and the contribution of parental environmental effects in medicago truncatula. PLoS One, 11(3), [e0150350]. https://doi.org/10.1371/journal.pone.0150350

Salinity adaptation and the contribution of parental environmental effects in medicago truncatula. / Moriuchi, Ken S.; Friesen, Maren L.; Cordeiro, Matilde A.; Badri, Mounawer; Vu, Wendy T.; Main, Bradley; Aouani, Mohamed Elarbi; Nuzhdin, Sergey V.; Strauss, Sharon Y.; Von Wettberg, Eric J.B.

In: PLoS One, Vol. 11, No. 3, e0150350, 01.03.2016.

Research output: Contribution to journalArticle

Moriuchi, KS, Friesen, ML, Cordeiro, MA, Badri, M, Vu, WT, Main, B, Aouani, ME, Nuzhdin, SV, Strauss, SY & Von Wettberg, EJB 2016, 'Salinity adaptation and the contribution of parental environmental effects in medicago truncatula', PLoS One, vol. 11, no. 3, e0150350. https://doi.org/10.1371/journal.pone.0150350
Moriuchi, Ken S. ; Friesen, Maren L. ; Cordeiro, Matilde A. ; Badri, Mounawer ; Vu, Wendy T. ; Main, Bradley ; Aouani, Mohamed Elarbi ; Nuzhdin, Sergey V. ; Strauss, Sharon Y. ; Von Wettberg, Eric J.B. / Salinity adaptation and the contribution of parental environmental effects in medicago truncatula. In: PLoS One. 2016 ; Vol. 11, No. 3.
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