Transgenerational adaptation to heavy metal salts in Arabidopsis

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dc.contributor.authorRahavi, Mohammad Reza
dc.contributor.authorMigicovsky, Zoë
dc.contributor.authorTitov, Viktor
dc.contributor.authorKovalchuk, Igor
dc.date.accessioned2016-10-31T22:38:06Z
dc.date.available2016-10-31T22:38:06Z
dc.date.issued2011
dc.descriptionSherpa Romeo green journal: open accessen_US
dc.description.abstractExposure to abiotic and biotic stress results in changes in plant physiology and triggers genomic instability. Recent reports suggest that the progeny of stressed plants also exhibit changes in genome stability, stress tolerance, and methylation. Here we analyzed whether exposure to Ni2+, Cd2+, and Cu2+ salts leads to transgenerational changes in homologous recombination frequency and stress tolerance. We found that the immediate progeny of stressed plants exhibited an increased rate of recombination. However, when the progeny of stressed plants was propagated without stress, recombination reverted to normal levels. Exposure of plants to heavy metals for five consecutive generations (S1–S5) resulted in recombination frequency being maintained at a high level. Skipping stress following two to three generations of propagation with 50mM Ni2+ or Cd2+ did not decrease the recombination frequency, suggesting plant acclimation to upregulated recombination. Analysis of the progeny of plants exposed to Cu2+ and Ni2+ indicated higher stress tolerance to the heavy metal parental plants were exposed to. Tolerance was higher in plants propagated with stress for three to five generations, which resulted in longer roots than plants propagated on heavy metals for only one to two generations.Tolerancewas also more prominent upon exposure to a higher concentration of salts.The progeny of stressed plants were also more tolerant to NaCl and methyl methane sulfonate.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationRahavi, M. R., Migicovsky, Z., Titov, V., & Kovalchuk, I. (2011). Transgenerational adaptation to heavy metal salts in Arabidopsis. Frontiers in Plant Science, 2(91). doi:3389/fpls.2011.00091en_US
dc.identifier.urihttps://hdl.handle.net/10133/4641
dc.language.isoen_CAen_US
dc.publisherFrontiers Mediaen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.subjectHeavy metal saltsen_US
dc.subjectHomologous recombinationen_US
dc.subjectStress toleranceen_US
dc.subjectTransgenerational responseen_US
dc.subjectArabidopsis thalianaen_US
dc.titleTransgenerational adaptation to heavy metal salts in Arabidopsisen_US
dc.typeArticleen_US
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