TY - JOUR
T1 - Induced inaccessibility and accessibility in the oat powdery mildew system: insights gained from use of metabolic inhibitors and silicon nutrition
AU - Prats, Elena
AU - Carver, Timothy L. W.
AU - Lyngkjaer, Michael F.
AU - Roberts, Pete C.
AU - Zeyen, R. J.
N1 - Sponsorship: EU Marie Curie / DEFRA
PY - 2006/1/1
Y1 - 2006/1/1
N2 - Fungal-induced inaccessibility in oat to Blumeria graminis requires active cell processes. These are reiterative de novo cell processes involved in inherent penetration resistance. Therefore, induced inaccessibility may well involve cellular memory of the initial attack. Phenylpropanoid biosynthesis inhibitors (AOPP and OH-PAS) and phosphate scavengers (DDG and d-mannose) strongly suppressed induced inaccessibility, but silicon nutrition had no effect. Induced accessibility was modulated by the presence of fungal haustoria inside cells. Haustoria actively suppress or reprogram infected plant cells toward a constant state of penetration susceptibility. Neither inhibitor treatments nor silicon nutrition affected fungal-induced accessibility.
AB - Fungal-induced inaccessibility in oat to Blumeria graminis requires active cell processes. These are reiterative de novo cell processes involved in inherent penetration resistance. Therefore, induced inaccessibility may well involve cellular memory of the initial attack. Phenylpropanoid biosynthesis inhibitors (AOPP and OH-PAS) and phosphate scavengers (DDG and d-mannose) strongly suppressed induced inaccessibility, but silicon nutrition had no effect. Induced accessibility was modulated by the presence of fungal haustoria inside cells. Haustoria actively suppress or reprogram infected plant cells toward a constant state of penetration susceptibility. Neither inhibitor treatments nor silicon nutrition affected fungal-induced accessibility.
U2 - 10.1111/j.1364-3703.2005.00315.x
DO - 10.1111/j.1364-3703.2005.00315.x
M3 - Article
C2 - 20507427
SN - 1464-6722
VL - 7
SP - 47
EP - 59
JO - Molecular Plant Pathology
JF - Molecular Plant Pathology
IS - 1
ER -