EXTRACELLULAR ATP INDUCES ADVENTITIOUS ROOT FORMATION IN CUCUMBER EXPLANTS

LANTERI, M.L.; TOSSI, V.E.; TONÓN, C.; CASALONGUÉ, C.; LAMATTINA, L.

Potrero de los Funes, San Luis

Congreso; XLVII Reunión Anual SAIB; 2011

SAIB

In this study, we have investigated the regulation of adventitious root (AR) formation by extracellular ATP (eATP) in cucumber (Cucumis sativus) explants. Cutting seedlings responded in a dosedependent manner to eATP as evidenced by a higher number and length of ARs compared with controls. The eATP-induced AR formation was mimicked by a very low dose (20.0 pM) of the nonhydrolysable ATP analogue, S-ãATP. Adenosine, as other signal molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings manner to eATP as evidenced by a higher number and length of ARs compared with controls. The eATP-induced AR formation was mimicked by a very low dose (20.0 pM) of the nonhydrolysable ATP analogue, S-ãATP. Adenosine, as other signal molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings Cucumis sativus) explants. Cutting seedlings responded in a dosedependent manner to eATP as evidenced by a higher number and length of ARs compared with controls. The eATP-induced AR formation was mimicked by a very low dose (20.0 pM) of the nonhydrolysable ATP analogue, S-ãATP. Adenosine, as other signal molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings ãATP. Adenosine, as other signal molecule, modulated S-ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings concentrations that did not produce a significant response when applied separately to the cutting seedlings ãATP-mediated AR formation at concentrations that did not produce a significant response when applied separately to the cutting seedlings