Flavan accumulation in stems of Platanus × acerifolia seedlings inoculated with Ceratocystis fimbriata f.sp. platani, the canker stain disease agent

1996 ◽  
Vol 74 (12) ◽  
pp. 1982-1987 ◽  
Author(s):  
C. El Modafar ◽  
A. Clérivet ◽  
J. J. Macheix
Keyword(s):  
Phenolic Compounds ◽  
Plane Tree ◽  
Ceratocystis Fimbriata ◽  
Platanus Acerifolia ◽  
Vascular Tissues ◽  
Defensive Responses ◽  
Inoculation Site ◽  
Disease Agent

Inoculation of Platanus × acerifolia stems with Ceratocystis fimbriata f.sp. platani, the canker stain disease agent, induced the accumulation of preexisting phenolic compounds such as flavan-3-ols and proanthocyanidins in the infected internode of the stem. These flavan compounds and their polymerized products were most quickly accumulated near the inoculation site, particularly in the medulla, vascular tissues, tyloses, and gels. Thus, these plane tree reactions were considered as defensive responses. Their involvement in the restriction of Ceratocystis fimbriata f.sp. platani development around the inoculation site, associated with other located responses previously described, was discussed. Keywords: Ceratocystis fimbriata, flavan-3-ols, Platanus × acerifolia, proanthocyanidins.

Tyloses and gels associated with cellulose accumulation in vessels are responses of plane tree seedlings (Platanus × acerifolia) to the vascular fungus Ceratocystis fimbriata f. sp platani

Trees ◽  
2000 ◽  
Vol 15 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Alain Clérivet ◽  
Véronique Déon ◽  
Ibtissam Alami ◽  
Fredérique Lopez ◽  
Jean-Paul Geiger ◽  
...  
Keyword(s):  
Tree Seedlings ◽  
Plane Tree ◽  
Ceratocystis Fimbriata ◽  
Platanus Acerifolia ◽  
Vascular Fungus

scholarly journals Recovery of betulinic acid from plane tree (Platanus acerifolia L.)

2014 ◽  
Vol 95 ◽  
pp. 541-545 ◽  
Author(s):  
José María Pinilla ◽  
Alexis López-Padilla ◽  
Gonzalo Vicente ◽  
Tiziana Fornari ◽  
J.C. Quintela ◽  
...  
Keyword(s):  
Betulinic Acid ◽  
Plane Tree ◽  
Platanus Acerifolia

scholarly journals Induction of the Phenylpropanoid Pathway by Acibenzolar-S-Methyl and Potassium Phosphite Increases Mango Resistance to Ceratocystis fimbriata Infection

Plant Disease ◽  
2015 ◽  
Vol 99 (4) ◽  
pp. 447-459 ◽  
Author(s):  
L. Araujo ◽  
W. M. Silva Bispo ◽  
V. S. Rios ◽  
S. A. Fernandes ◽  
F. A. Rodrigues
Keyword(s):  
Phenolic Compounds ◽  
Secondary Metabolites ◽  
High Performance ◽  
Sinapinic Acid ◽  
Defense Responses ◽  
Phenylpropanoid Pathway ◽  
Control Treatment ◽  
Disease Development ◽  
Ceratocystis Fimbriata ◽  
Potassium Phosphite

This study used both microscopic and biochemical analyses to investigate the possible defense responses induced by acibenzolar-S-methyl (ASM) and potassium phosphite (Phi) in mango plants inoculated with Ceratocystis fimbriata. Disease development was evaluated in the stems of inoculated mango plants and these were examined using fluorescence and light microscopy. High-performance liquid chromatography (HPLC) was used to quantify secondary metabolites in the stem sections. Spraying the plants with ASM and Phi reduced internal necrosis and disease development. The ASM and Phi induced many microscopic defense responses in the stem tissues against C. fimbriata infection. HPLC analysis revealed that the concentrations of two alkaloids (theobromine and 7-methylxanthine) and 10 phenolic compounds (catechin, epicatechin, epigallocatechin, gallic acid, myricetin, p-coumaric acid, p-hydroxybenzoic acid, phloridzin, sinapinic acid, and salicylhydroxamic acid) were higher in the stem tissues of plants sprayed with ASM or Phi than in inoculated control treatment. The concentrations of phenolic compounds were higher in the stem tissues of inoculated plants than in noninoculated plants, while the inverse was observed for alkaloids. Higher concentrations of secondary metabolites in the stem tissues were detected in the early stages of fungal infection, especially in plants treated with inducers. Taken together, the results from the present study clearly support the concept that the phenylpropanoid pathway in the stem tissues of mango plants infected by C. fimbriata can be induced by ASM and Phi.

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