TY - GEN
T1 - Systemic acquired resistance in potato
AU - Navarre, D. J.
AU - Thomas, P.
AU - Brown, C.
AU - Kachroo, P.
PY - 2003
Y1 - 2003
N2 - Systemic acquired resistance (SAR) is a defense mechanism that is increasingly being exploited for crop protection. However, successful utilization of SAR will likely require optimization of defense induction for each crop followed by a determination of the pathogens against which SAR is effective. We are examining the capacity of different potato tissues to mount an SAR response. Both free and bound basal salicylic acid (SA) concentrations were measured in leaves, flowers, stems, roots and tubers. SA levels were the highest in leaves and flowers, with concentrations of up to 15 μg/gram fresh weight. Relative to Arabidopsis or tobacco, high SA levels were also found in stems, roots and tubers. SAR induction by different SAR elicitors, including harpin and BTH was examined. PR-1 was expressed constitutively, in the absence of elicitation. Little or no increase in PR-1 gene expression was seen after treatment with SAR inducers.
AB - Systemic acquired resistance (SAR) is a defense mechanism that is increasingly being exploited for crop protection. However, successful utilization of SAR will likely require optimization of defense induction for each crop followed by a determination of the pathogens against which SAR is effective. We are examining the capacity of different potato tissues to mount an SAR response. Both free and bound basal salicylic acid (SA) concentrations were measured in leaves, flowers, stems, roots and tubers. SA levels were the highest in leaves and flowers, with concentrations of up to 15 μg/gram fresh weight. Relative to Arabidopsis or tobacco, high SA levels were also found in stems, roots and tubers. SAR induction by different SAR elicitors, including harpin and BTH was examined. PR-1 was expressed constitutively, in the absence of elicitation. Little or no increase in PR-1 gene expression was seen after treatment with SAR inducers.
KW - Crop protection
KW - Disease resistance
KW - Pathogen
KW - Plant defense
KW - Salicylic acid
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U2 - 10.17660/ActaHortic.2003.619.19
DO - 10.17660/ActaHortic.2003.619.19
M3 - Conference contribution
AN - SCOPUS:84879628117
SN - 9789066053601
T3 - Acta Horticulturae
SP - 177
EP - 181
BT - XXVI International Horticultural Congress
ER -