Potassium deficiency in sunflower (Helianthus annus) is associated with changes in protein profiles: An approach to diagnosis of mineral status Academic Article uri icon


  • Abstract Limited availability of K+ by hydroponically-grown sunflower plants was associated with increased abundance of two polypeptides of molecular mass of 60 and 62 KDa detected mainly in young subapical region of the stem. The increased abundance could be detected at least as early as three days after the transfer of plants from complete growth medium (5mM K+) to media containing suboptimal concentrations (I m MK+ or less). It is proposed that these polypeptides could be the basis for early diagnosis of K+ deficiency.

publication date

  • January 1, 1990