Role of dehydrodiferulates in maize resistance to pests and diseases.
Phenolic esters have attracted considerable interest due to the potential they offer for peroxidase catalysed cross-linking of cell wall polysaccharides. Particularly, feruloyl residues undergo radical coupling reactions that result in cross-linking (intra-/intermolecular) between polysaccharides, between polysaccharides and lignin and, between polysaccharides and proteins. This review addresses for the first time different studies in which it is established that cross-linking by dehydrodiferulates contributes to maize's defences to pests and diseases. Dehydrodiferulate cross-links are involved in maize defence mechanisms against insects such as the European, Mediterranean, and tropical corn borers and, storage pest as the maize weevil. In addition, cross-links are also discussed to be involved in genetic resistance of maize to fungus diseases as Gibberella ear and stalk rot. Resistance against insects and fungus attending dehydrodiferulates could go hand in hand. Quantitative trait loci mapping for these cell wall components could be a useful tool for enhancing resistance to pest and diseases in future breeding programs.
Santiago
Rogelio
R
Misión Biológica de Galicia (CSIC), Apartado 28, E-36080, Pontevedra (PC 36143), Spain.
Malvar
Rosa A
RA
Misión Biológica de Galicia (CSIC), Apartado 28, E-36080, Pontevedra (PC 36143), Spain.
D000818:Animals; D002473:Cell Wall / Q000737:chemistry / Q000378:metabolism; D003373:Coumaric Acids / Q000737:chemistry* / Q000378:metabolism* / Q000494:pharmacology; D060467:Disease Resistance / Q000502:physiology*; D005874:Gibberella / Q000502:physiology; D007313:Insecta / Q000502:physiology; D010935:Plant Diseases; D011134:Polysaccharides / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry* / Q000378:metabolism
D003373:Coumaric Acids; D011134:Polysaccharides; C004999:ferulic acid
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