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231225s2004 xx |||||o 00| ||eng c |
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|a 10.1046/j.1469-8137.2003.00983.x
|2 doi
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|a pubmed24n1080.xml
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|a (NLM)33873730
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|a DE-627
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|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Gárriz, Andrés
|e verfasserin
|4 aut
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| 245 |
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|a Polyamine metabolism during the germination of Sclerotinia sclerotiorum ascospores and its relation with host infection
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| 264 |
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|c 2004
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Revised 20.04.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a • Polyamine biosynthesis inhibitors were used to study polyamine metabolism during the germination of Sclerotinia sclerotiorum ascospores, and to evaluate the potential of polyamine biosynthesis inhibition for the control of ascospore-borne diseases in plants. • The effects of inhibitors on ascospore germination, free polyamine levels, ornithine decarboxylase activity and development of disease symptoms on tobacco (Nicotiana tabacum) leaf discs inoculated with ascospores were determined. • α-Difluoromethylornithine inhibited ornithine decarboxylase and decreased free spermidine levels, but had no effect on ascospore germination. Both, the spermidine synthase inhibitor cyclohexylamine and the S-adenosyl-methionine decarboxylase inhibitor methylglyoxal bis-[guanyl hydrazone] decreased free spermidine levels, but only the latter inhibited ascospore germination, at concentrations of 5 mm or higher. Lesion development on leaf discs was reduced by cyclohexylamine and methylglyoxal bis-[guanyl hydrazone], but not by α-difluoromethylornithine. In the absence of inhibitors, dormant ascospores contained higher polyamine levels than mycelium. • Ascospore germination did not depend on ornithine decarboxylase activity and inhibitors of this enzyme will probably have a limited potential for the control of ascospore-borne plant diseases. On the contrary, spermidine synthase and S-adenosyl-methionine decarboxylase could be more suitable targets for fungicidal action. The relative insensitivity of ascospore germination to polyamine biosynthesis inhibitors may be caused by their high polyamine content
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|a Journal Article
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|a S-adenosyl-methionine decarboxylase
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| 650 |
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4 |
|a Sclerotinia sclerotiorum
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| 650 |
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4 |
|a cyclohexylamine
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| 650 |
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4 |
|a methylglyoxal bis-[guanyl hydrazone]
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| 650 |
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4 |
|a ornithine decarboxylase
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| 650 |
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4 |
|a polyamines
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| 650 |
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4 |
|a spermidine synthase
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| 650 |
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4 |
|a α-difluoromethylornithine
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| 700 |
1 |
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|a Dalmasso, María C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Marina, María
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rivas, Elisa I
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ruiz, Oscar A
|e verfasserin
|4 aut
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| 700 |
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|a Pieckenstain, Fernando L
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 161(2004), 3 vom: 20. März, Seite 847-854
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:161
|g year:2004
|g number:3
|g day:20
|g month:03
|g pages:847-854
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|u http://dx.doi.org/10.1046/j.1469-8137.2003.00983.x
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