Inhibition of Tomato Early Blight Disease by Culture Extracts of a Streptomyces puniceus Isolate from Mangrove Soil

Phytopathology
Lingyun HaoYing Xu

Abstract

This study investigates the potential of natural products derived from a mangrove rhizosphere bacterium in tomato early blight management. A Streptomyces puniceus strain L75 was isolated from the rhizosphere of Acanthus ilicifolius Linn in the Mai Po Reserve, Hong Kong. The crude ethyl acetate (EA) extract of L75 fermentation cultures has broad-spectrum antifungal bioactivities. L75 EA extract was significantly more effective in Alternaria solani growth inhibition at 25 μg/ml or lower compared with Mancozeb, with no observable negative impacts on tomato leaves or root development. Furthermore, L75 EA extract had significantly lower aquatic toxicity than Mancozeb at the same concentrations. L75 EA extract targets germ tube elongation of A. solani conidia, with a fungistatic mode of action. Liquid chromatography-quadrupole time-of-flight mass spectrometry analysis identified two possible antifungal compounds, Alteramide A and the Heat-Stable Antifungal Factor, which together contribute partially to the bioactivity of L75 EA extract. On detached tomato leaves, coinoculation of A. solani with L75 EA extract of 50, 25, or 5 μg/ml reduced diseased areas by ∼98, ∼90, and ∼48%, respectively, relative to the control after 5 days. This s...Continue Reading

References

Mar 25, 1998·The Journal of Antibiotics·P R GraupnerC E Snipes
Dec 29, 2012·Journal of the American Chemical Society·Avena C RossBradley S Moore
Jul 9, 2013·Current Genetics·Fernanda Luiza de Souza SebastianesAline Aparecida Pizzirani-Kleiner
May 7, 2014·Marine Drugs·Dong-Bo XuKui Hong
Mar 17, 2015·Proceedings of the National Academy of Sciences of the United States of America·Jeff S PiotrowskiYoshikazu Ohya
Sep 9, 2015·Frontiers in Microbiology·Adzzie-Shazleen AzmanLearn-Han Lee
Oct 7, 2015·Frontiers in Plant Science·Yuanyuan SongRensen Zeng
Nov 14, 2015·Critical Reviews in Toxicology·Zachery R StaleyJason R Rohr
Aug 30, 2017·Frontiers in Microbiology·Mukesh MeenaRam S Upadhyay
Sep 22, 2017·International Journal of Molecular Sciences·Pragya AdhikariDilip R Panthee
Sep 13, 2018·Marine Drugs·Elena AncheevaPeter Proksch
Jul 1, 2013·Plant Disease·N C GudmestadJ S Pasche
Sep 1, 2010·Plant Disease·Maria Lodovica GullinoBrian Sheppard

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