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The nitrilase PtNIT1 catabolizes herbivore-induced nitriles in Populus trichocarpa.

Jan Günther | Sandra Irmisch | Nathalie D Lackus | Michael Reichelt | Jonathan Gershenzon | Tobias G Köllner
BMC plant biology | 2018

Nitrilases are nitrile-converting enzymes commonly found within the plant kingdom that play diverse roles in nitrile detoxification, nitrogen recycling, and phytohormone biosynthesis. Although nitrilases are present in all higher plants, little is known about their function in trees. Upon herbivory, poplars produce considerable amounts of toxic nitriles such as benzyl cyanide, 2-methylbutyronitrile, and 3-methylbutyronitrile. In addition, as byproduct of the ethylene biosynthetic pathway upregulated in many plant species after herbivory, toxic β-cyanoalanine may accumulate in damaged poplar leaves. In this work, we studied the nitrilase gene family in Populus trichocarpa and investigated the potential role of the nitrilase PtNIT1 in the catabolism of herbivore-induced nitriles.

Pubmed ID: 30348089

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