TY - JOUR
T1 - Citrus limon seedlings without functional chloroplasts are unable to induce phenylalanine ammonia-lyase in response to inoculation with Alternaria alternata
AU - Prieto, H.
AU - Chiong, M.
AU - Seelenfreund, D.
AU - Garrido, J.
AU - Quaas, A.
AU - Perez, L. M.
PY - 1997
Y1 - 1997
N2 - A light-dependent bleaching of plastids was induced in lemon seedlings through cultivation in the presence of the herbicide Norfluorazon (NFZ). Also, etiolated seedlings were obtained by cultivation under continuous dark conditions. When both types of seedlings were challenged with Alternaria alternata conidia, they were unable to induce phenylalanine ammonia-lyase, PAL (E.C. 4.3.1.5.). Cell ultrastructure of control seedlings showed the presence of chloroplasts, while NFZ-treated lemon seedlings showed altered chloroplasts and in etiolated seedlings only proplastids were observed. In addition, CO2 assimilation was not detected in NFZ-treated and etiolated seedlings, as compared to controls.
AB - A light-dependent bleaching of plastids was induced in lemon seedlings through cultivation in the presence of the herbicide Norfluorazon (NFZ). Also, etiolated seedlings were obtained by cultivation under continuous dark conditions. When both types of seedlings were challenged with Alternaria alternata conidia, they were unable to induce phenylalanine ammonia-lyase, PAL (E.C. 4.3.1.5.). Cell ultrastructure of control seedlings showed the presence of chloroplasts, while NFZ-treated lemon seedlings showed altered chloroplasts and in etiolated seedlings only proplastids were observed. In addition, CO2 assimilation was not detected in NFZ-treated and etiolated seedlings, as compared to controls.
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U2 - 10.1016/S0176-1617(97)80278-7
DO - 10.1016/S0176-1617(97)80278-7
M3 - Article
AN - SCOPUS:0030838356
SN - 0176-1617
VL - 150
SP - 645
EP - 651
JO - Journal of Plant Physiology
JF - Journal of Plant Physiology
IS - 6
ER -