Chemotactic Preferences and Strain Variation in the Response of Phytophthora sojae Zoospores to Host Isoflavones.

Applied and Environmental Microbiology
B M TylerP F Morris

Abstract

The zoospores of Phytophthora sojae are chemotactically attracted to the isoflavones genistein and daidzein that are released by soybean roots. In this study we have examined the response of P. sojae zoospores to a wide range of compounds having some structural similarity to genistein and daidzein, including isoflavones, flavones, chalcones, stilbenes, benzoins, benzoates, benzophenones, acetophenones, and coumarins. Of 59 compounds examined, 43 elicited some response. A comparison of the chemotactic responses elicited by the various compounds revealed a primary role for the phenolic 4(prm1)- and 7-hydroxyl groups on the isoflavone structure. A few compounds acted as repellents, notably methylated flavones with a hydrophobic B ring. The chemotactic response to many of the analogs was markedly different among different strains of P. sojae.

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Citations

Jul 31, 2002·Annual Review of Phytopathology·Brett M Tyler
Oct 24, 2008·Phytopathology·Kosala RanathungeMark A Bernards
Oct 3, 2007·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Siegrid SteinkellnerHorst Vierheilig
Jan 1, 2007·Molecular Plant Pathology·Brett M Tyler
Mar 26, 2016·Frontiers in Plant Science·Stephanie R BollmannNiklaus J Grünwald
Jul 10, 2010·Molecular Plant-microbe Interactions : MPMI·Aining LiYuanchao Wang
Nov 29, 2001·Proceedings of the National Academy of Sciences of the United States of America·J ChamnanpuntB M Tyler
Jul 1, 2002·Mycologia·K W FanE B G Jones
Dec 10, 2020·International Journal of Molecular Sciences·Yee-Shan KuHon-Ming Lam
Oct 8, 1999·Fungal Genetics and Biology : FG & B·M S ConnollyP F Morris
Dec 6, 2014·Molecular Plant Pathology·Quentin GascuelLaurence Godiard

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