Agriculture

The rare sugar D-tagatose protects plants from downy mildews and is a safe fungicidal agrochemical

S. Mochizuki, T. Fukumoto, et al.

Discover how D-tagatose, a natural sugar, serves as a powerful ally against plant diseases, notably downy mildews. This innovative research by Susumu Mochizuki and colleagues reveals how D-tagatose disrupts pathogen growth by targeting metabolic pathways, showcasing a groundbreaking approach to crop protection.

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Abstract

The rare sugar D-tagatose, a safe natural product used commercially as a food ingredient, effectively controls various plant diseases, particularly downy mildews. It appears to act directly on the pathogen rather than activating plant defenses. D-tagatose inhibits the initial step of mannose metabolism, crucial for fungal and oomycete development, by inhibiting fructokinase and subsequently phosphomannose isomerase. This leads to reduced D-glucose 6-phosphate, D-fructose 6-phosphate, and D-mannose 6-phosphate, disrupting mannan synthesis and consequently hindering infection and pathogen reproduction.

Publisher

Communications Biology

Published On

Aug 05, 2020

Authors

Susumu Mochizuki, Takeshi Fukumoto, Toshiaki Ohara, Kouhei Ohtani, Akihide Yoshihara, Yoshio Shigematsu, Keiji Tanaka, Koichi Ebihara, Shigeyuki Tajima, Kenji Gomi, Kazuya Ichimura, Ken Izumori, Kazuya Akimitsu

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