{"title":"The Effect in vitro of Flavonoid Aglycones Extracts from Roots of Date Palm Cultivars on Fusarium oxysporum F. Sp. albedinis","authors":"T. Azouaoui \u2013 Ait Kettout, R. Gaceb \u2013 Terrak, F. Rahmania","volume":81,"journal":"International Journal of Agricultural and Biosystems Engineering","pagesStart":906,"pagesEnd":909,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/16733","abstract":"
Date production in North Africa is facing a worrying slowdown and a decline because of Fusarium<\/em> wilt or bayoud date palm (Phoenix dactylifera<\/em> L., caused by Fusarium oxysporum<\/em> f. sp. albedinis<\/em> (F. o. a<\/em>). The objective of this work is to study the in vitro<\/em> effect of flavonoid aglycones extracted from the roots of two cultivars of date palm (one sensitive to bayoud (Deglet Nour) and the other resistant (Takerboucht)) on the growth and production fusaric acid of the pathogen. Results show that during the first week of development of F. o. a<\/em> on potato dextrose liquid medium, the flavonoid aglycones extracts of the susceptible cultivar roots stimulates mycelial growth as well as conidiogenesis of F.o.a<\/em>, nevertheless it has no effect on the synthesis of fusaric acid. However, the flavonoid aglycones extract of resistant cultivar roots stimulates mycelial growth and decreases both the number of conidia production and fusaric acid. It therefore appears possible that the resistant cultivar aglycones have two types of action: they either inhibit the synthesis of fusaric acid, or they metabolize this toxin into hydrosoluble product, this is called detoxification.<\/p>\r\n","references":"[1] W.F.O. Marasas, \u201cToxigenic Fusarium species\u201d in The Pennsylvania \r\nState University Press. University Park, PA, 1984, p. 328. \r\n[2] S. K. Ohno, S. Tomita-Yokotani, M. Kosemura, Node, T. Suzuki, M. \r\nAmano, K. Yasui, T. Goto, S. Yamamura and K. A. Hasegawa, \r\n\u201cSpecies-selective allelopathic substance from germinating sunflower \r\n(Helianthus annuus L.) seeds\u201d. Phytochem., vol 56, pp. 577-581, 2001. \r\n[3] .G. Lee, B.Y. Lee and H.J. Lee, \u201cAccumulation of phytotoxic organic \r\nacids in reused nutrient solution during hydroponic cultivation of lettuce \r\n(Lactuca sativa L.)\u201d. Sci. Horticul., vol 110, pp. 119-128, 2006. \r\n[4] Z.P. Hao, Q. Wang, P. Christiea and X.L. Li, \u201cAllelopathic potential of \r\nwatermelon tissues and root exudates\u201d. Sci. Horti. DOI: 10.1016\/ \r\nJ.scientia, 2006. \r\n[5] C. El Modafar, E. El Boustani,\u201d Cell wall-bound phenolic acid and \r\nlignin contents in date palm as related to its resistance to Fusarium \r\noxysporum\u201d. Biol. Plant., vol 44, pp. 125-130, 2001. \r\n[6] P. Munier, \u2018Le palmier dattier. Techniques agricoles et productions \r\ntropicales. \u00c9d. Maisonneuve et Larose, Paris, 1973, 221 p. \r\n[7] E.C. Bate-Smith,\u201d Leuco-anthocyanins: 1- Detection and identification \r\nof anthocyanidins formed from leuco-anthocyanins in plant tissues\u201d, \r\nBiochem. J.,vol 58, pp. 122-125,1954. \r\n[8] Ph. Lebreton, M. Jay, B. Voirin, M.P. Bouchez, \u00ab Sur l\u2019analyse \r\nqualitative et quantitative des flavono\u00efdes \u00bb, Chim. Anal., vol 49 n\u00b07, \r\npp. 375-383, 1967. \r\n[9] R. Gaceb Terrak, Contribution \u00e0 la connaissance des interactions \r\npalmier dattier (Phoenix dactylifera L.) - agent causal du bayoud \r\n(Fusarium oxysporum f. sp. albedinis) par analyses phytochimiques des \r\nlipides et des ph\u00e9nylpropano\u00efdes. Th\u00e8se de Doctorat d\u2019Etat 2010, \r\nUSTHB 198p. \r\n[10] A. Ziouti, C. El-Modafar, A. Fleuriet, S. El-Boustani , J.J. Macheix, \r\n\u201cPhenolic compounds in date palm cultivars sensitive and resistant to \r\nFusarium oxysporum\u201d. Biol. Plant.,vol 38, n\u00b0 3, 451-457, 1996. \r\n[11] H.S. Wu, S.H.Shen, J.M. Han, Y.D. Liu, S.D. Liu, \u201cThe effect in vitro\r\nof exogenously applied p-hydroxybenzoic acid on Fusarium oxysporum\r\nf. sp. niveum\u201d. Phytopathol. Mediterr., vol 48, pp. 439\u2013446, 2009. \r\n[12] H.S. Wu, Y. Wang,W. Bao, D. Y. Liu, W. Raza, Q.W. Huang, Z.S. \r\nMao, Q.R. Shen,\u201d Responses of Fusarium oxysporum f. sp. niveum to \r\nexogenously added sinapic acid in vitro. Biol Fertil Soils . vol 45, pp. \r\n443\u2013447, 2009. \r\n[13] W.Y. Hao, L.X. Ren, W. Ran, Q.R. Shen, \u201c Allelopathic effects of root \r\nexudates from watermelon and rice plants on Fusarium oxysporum f. sp. \r\nniveum\u201d. Plant Soil., vol 336, pp. 485\u2013497, 2010. ","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 81, 2013"}