Phytoalexins and phytoanticipins from the wild crucifers Thellungiella halophila and Arabidopsis thaliana: Rapalexin A, wasalexins and camalexin

• Published in: Phytochemistry (Oxford) Vol. 69; no. 4; pp. 889 - 893
• Main Authors: Pedras, M. Soledade C., Adio, Adewale M.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.02.2008; Elsevier
• Subjects: Arabidopsis - genetics; Arabidopsis - metabolism; Arabidopsis thaliana; biochemical pathways; Biological and medical sciences; biosynthesis; Brassica; Brassicaceae; Brassicaceae - genetics; Brassicaceae - metabolism; Camalexin; Chemical constitution; Crucifer; Fundamental and applied biological sciences. Psychology; Fungal plant pathogens; Genome, Plant - genetics; Genome, Plant - physiology; Indoles - chemistry; Indoles - metabolism; Isothiocyanates - chemistry; Isothiocyanates - metabolism; methoxybrassenin; Molecular Structure; Pathology, epidemiology, host-fungus relationships. Damages, economic importance; Phytoalexin; phytoalexins; phytoanticipins; Phytopathology. Animal pests. Plant and forest protection; Plant physiology and development; Rapalexin; Sesquiterpenes; Sulfides - chemistry; Sulfides - metabolism; Terpenes - chemistry; Terpenes - metabolism; Thellungiella halophila; Thiazoles - chemistry; Thiazoles - metabolism; Wasalexin; Brassica; Wasalexin; Phytoalexin; Crucifer; Camalexin; Rapalexin; Brassicaceae; Arabidopsis thaliana; Gene; Cruciferae; Dicotyledones; Angiospermae; Production; Isolation; Spermatophyta; Elicitation
• ISSN: 0031-9422; 1873-3700
• DOI: 10.1016/j.phytochem.2007.10.032

Investigation of phytoalexin production using abiotic elicitation showed that the phytoalexin rapalexin A was produced by both Thellungiella halophila and Arabidopsis thaliana, but while A. thaliana produced camalexin, T. halophila produced wasalexins A and B and methoxybrassenin B. Investigation of phytoalexin production using abiotic elicitation showed that the phytoalexin rapalexin A was produced by both Thellungiella halophila and Arabidopsis thaliana, but while A. thaliana produced camalexin, T. halophila produced wasalexins A and B and methoxybrassenin B. Considering that the genome of T. halophila is being sequenced currently and that the wasalexin pathway present in T. halophila is expected to involve a number of genes also present in Brassica species, our discovery should facilitate the isolation of genes involved in biosynthetic pathways of phytoalexins of the most economically important crucifer species.