Cloning and sequencing of the cDNAs induced by aluminium treatment and Pi starvation in cultured tobacco cells [nutrient deficiency]

adn aluminio aluminium amino acids cell culture culture de cellule culture techniques disponibilidad de nutrientes dna enzimas enzyme enzymes enzymic activity fitotoxicidad fosfatos gene expression heavy metals metales pesados molecular cloning nicotiana tabacum nucleotide sequence nutrient availability phosphate phosphates phytotoxicity secuencia nucleica technique de culture