Nifedipine influence on calcium and aluminum absorption in roots of three sorghum cultivars
Titel:
Nifedipine influence on calcium and aluminum absorption in roots of three sorghum cultivars
Auteur:
Wilkinson, R. E. Duncan, R. R. Berry, C. Deram, I.
Verschenen in:
Journal of plant nutrition
Paginering:
Jaargang 15 (1992) nr. 2 pagina's 191-198
Jaar:
1992-02
Inhoud:
A 1,4-dihydroxypyridine type of ion channel blocker, nifedipine [1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylate dimethyl ester], was tested on the root absorption of Al3+ and Ca2+ by sorghum [Sorghum bicolor (L.) Moench] cultivars with varying acid stress tolerance. In an acid stress sensitive cultivar, Funk G522DR, nifedipine (1 μM) influenced Ca2+ but not Al3+ absorption. In one acid stress tolerant cultivar, SC574, nifedipine (1 μM) influenced both Ca2+ and Al3+ absorption. In a second acid stress tolerant cultivar, SC283, nifedipine (1 μM) did not influence Ca2+ but did influence Al3+ absorption. Considerable genetic diversity is present in Ca2+ and Al3+ absorption between sorghum cultivars.