Isolation and Identification of Lathycarpin, a New Pterocarpan Phytoalexin from Lathyrus sativus
نویسندگان
چکیده
Earlier studies [1, 2] have demonstrated that a number of isoflavonoid (pterocarpan) phytoalexins [3] accumulate in excised, fungus-inoculated leaflets of species belonging to the genus Lathyrus (Leguminosae-Papilionoideae; tribe Vicieae). Apart from pisatin (3-methoxy-6a-hydroxy-8,9-methylenedioxypterocarpan, 1), the most commonly en countered Lathyrus phytoalexin, small quantities of three other fungitoxic pterocarpans (medicarpin, maackiain and variabilin) are variously produced by several Lathyrus spp. [2]. In addition, nissolin and its 9-O-methyl ether (methylnissolin) are formed, to-
منابع مشابه
The Phytoalexin Response o f Lathyrus sativus ( Grass Pea )
Leguminosae, Lathyrus sativus, Phytoalexin, 6a-Hydroxypterocarpan, Pisatin Lathyrus sativus was investigated for the nature of its phytoalexin response with the result that leaflets, im mature pods, and seeds were induced to produce 6a-hydroxy-3-methoxy-8,9-methylenedioxypterocarpan (pisatin). Evidence is presented for the metabolism of pisatin, by the wound pathogen Botrytis cinerea, to a phe...
متن کاملIsolation and Identification of Flavonol Glycosides from Lathyrus Armenus (Boiss. & Huet)
In the last five decades study on plant secondary metabolites have been increasing. Higher plants with a wide range of secondary metabolites have been very important in the search of new therapeutic agents. Flavonoids are most widely distributed secondary natural metabolites that found in plants which occuring in free forms or as glycosides with polyphenolic structure. In this study secondary m...
متن کاملIsolation and Identification of Flavonol Glycosides from Lathyrus Armenus (Boiss. & Huet)
In the last five decades study on plant secondary metabolites have been increasing. Higher plants with a wide range of secondary metabolites have been very important in the search of new therapeutic agents. Flavonoids are most widely distributed secondary natural metabolites that found in plants which occuring in free forms or as glycosides with polyphenolic structure. In this study secondary m...
متن کاملIsoneorautenol and Other Pterocarpan Phytoalexins from Calopogonium mucunoides
Following inoculation with the fungus Helm inthosporium carbonum, excised leaflets of the tropical papilionate legume C alopogonium mucunoides have been found to produce isoneorautenol, a new dimethylpyrano-substituted isoflavonoid (pterocarpan) phytoalexin. This compound accumulates together with demethylmedicarpin, neodunol, tuberosin, sophorapterocarpan A , and a sixth highly antifungal isof...
متن کاملAccumulation of Phenolic Compounds and Phytoalexins in Sliced and Elicitor-Treated Cotyledons of Cicer arietinum L
Cicer arietinum, Ascochyta rabiei, Elicitor. Isoflavones, Phytoalexins Upon slicing cotyledons of chickpea, Cicer arietinum L ., accumulate the pterocarpan phyto alexins medicarpin and maackiain. Treatment of this tissue with an elicitor from the phytopathogenic deuteromycete Ascochyta rabiei (Pass.) Lab. greatly enhances accumulation of the pterocarpans and of other isoflavones and flavonoids...
متن کامل