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Article Addendum

Growing in darkness: The etiolated lupin hypocotyl

José Sánchez-Bravo, M. Rocío Oliveros-Valenzuela, Carlos Nicolás and Manuel Acosta

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Epigeal germination of a dicot, like lupin (Lupinus albus L.), produces a seedling with a characteristic hypocotyl, which grows in darkness showing a steep growth gradient with an elongation zone just below the apex. The role of phytohormones, such as auxin and ethylene, in etiolated hypocotyl growth has been the object of our research for some time. The recent cloning and expression of three genes of influx and efflux carriers for polar auxin transport (LaAUX1, LaPIN1 and LaPIN3) reinforces a previous model proposed to explain the accumulation of auxin in the upper growth zone of the hypocotyl.

Authors

José Sánchez-Bravo

Departamento de Biología Vegetal (Fisiología Vegetal); Universidad de Murcia; Murcia, Spain

M. Rocío Oliveros-Valenzuela

Departamento de Biología Vegetal (Fisiología Vegetal); Universidad de Murcia; Murcia, Spain

Carlos Nicolás

Departamento de Fisiología Vegetal; Centro Hispano-Luso de Investigaciones Agrarias; Universidad de Salamanca; Salamanca, Spain

Manuel Acosta

Departamento de Biología Vegetal (Fisiología Vegetal); Universidad de Murcia; Murcia, Spain

Purchase article for $19

Subscribe to this journal for $79/year