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Interactions of tagatose with the sugar metabolism are responsible for Phytophthora infestans growth inhibition. | LitMetric

Interactions of tagatose with the sugar metabolism are responsible for Phytophthora infestans growth inhibition.

Microbiol Res

Center Agriculture Food Environment (C3A), University of Trento, via E. Mach 1, 38089 San Michele all'Adige, Italy; Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38089 San Michele all'Adige, Italy. Electronic address:

Published: June 2021

AI Article Synopsis

Article Abstract

Tagatose is a rare sugar metabolised by a limited number of microorganisms that inhibits a large spectrum of phytopathogens. In particular, tagatose inhibited Phytophthora infestans growth and negatively affected mitochondrial processes. However, the possible effects of tagatose on P. infestans metabolism have not yet been investigated. The aim of this study was to analyse the impact of this rare sugar on the sugar metabolism in P. infestans, in order to better understand its mode of action. Tagatose inhibited the growth of P. infestans with a precise reprogramming of the carbohydrate metabolism that involved a decrease of glucose, glucose-1-phosphate and mannose content and β-glucosidase activity. The combination of tagatose with common sugars led to three different responses and highlighted antagonistic interactions. In particular, glucose partially attenuated the inhibitory effects of tagatose, while fructose fully impaired tagatose-mediated growth inhibition and metabolite changes. Moreover, sucrose did not attenuate tagatose effects, suggesting that the inhibition of sucrose catabolism and the alteration of glucose-related pathways contributed to the growth inhibition caused by tagatose to P. infestans. The interactions of tagatose with the common sugar metabolism were found to be a key mode of action against P. infestans growth, which may represent the basis for the further development of tagatose as an eco-friendly fungicide.

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Source
http://dx.doi.org/10.1016/j.micres.2021.126724DOI Listing

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