Salinity Tolerance of Two Potato Cultivars (Solanum tuberosum) Correlates With Differences in Vacuolar Transport Activity.

ABSTRACT: Potato is an important cultivated crop species and since it is moderately salt sensitive there is a need to develop more salt tolerant cultivars. A high activity of Na⁺ transport across the tonoplast in exchange for H⁺ is essential to reduce Na⁺ toxicity. The proton motive force (PMF) generated by the V-H⁺-ATPase and the V-H⁺-PPase energizes the Na⁺(K⁺)/H⁺ antiport. We compared the activity, gene expression, and protein levels of the vacuolar proton pumps and the Na⁺/H⁺ antiporters in two potato cultivars (Solanum tuberosum) contrasting in their salt tolerance (cv. Desiree; tolerant and Mozart; sensitive) grown at 0 and 60 mM NaCl. Tonoplast-enriched vesicles were used to st

SUBMITTER: Jaarsma R 

PROVIDER: S-EPMC5996281 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature