TY  - JOUR
AU  - Heine, G.
AU  - Max, J.F.J.
AU  - Führs, H.
AU  - Moran-Puente, D.W.
AU  - Heintz, D.
AU  - Horst, W.J.
TI  - Effect of manganese of the resistance of tomato to Pseudocercospora fuligena
JO  - Journal of plant nutrition and soil science
VL  - 174
SN  - 1436-8730
CY  - Weinheim
PB  - Wiley-VCH
M1  - PreJuSER-12956
SP  - 827 - 836
PY  - 2011
N1  - Record converted from VDB: 12.11.2012
AB  - Black leaf mold caused by Pseudocercospora fuligena is an important fungal disease of tomato in Southeast Asia. The objective of this study was to evaluate the control of this disease using high manganese (Mn) applied to the root substrate and to evaluate the role of the leaf apoplast in plant response to fungal infection. In a nethouse experiment in Thailand, Mn above the optimum for plant growth but below toxicity increased resistance of tomato plants to black leaf mold. Enhanced resistance caused by Mn was also obtained when tomato plants were grown under controlled conditions in a mist chamber and artificially inoculated with the fungus. Manganese significantly increased plant peroxidases in the leaf apoplast. The highest peroxidase activity was measured when plants were inoculated with Pseudocercospora fuligena. Defense-related proteins in the leaf apoplast increased when plants were inoculated with Pseudocercospora fuligena but not when treated with high Mn. It is concluded that Mn above the optimum level for plant growth can contribute to the control of Pseudocercospora fuligena in tomato. The Mn effect on disease resistance is associated with the activation of plant peroxidases in the leaf apoplast. A systemic response, possibly mediated by NADH peroxidase activity, also seems to trigger disease resistance in leaves with low Mn concentrations.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000297217300015
DO  - DOI:10.1002/jpln.201000440
UR  - https://juser.fz-juelich.de/record/12956
ER  -