Rapeseed Overexpressing the Trichoderma Thkel1 Gene Can Be Colonized by Arbuscular Mycorrhizal Fungi With Increases in Seed Yield and Oil Quality
34 Pages Posted: 27 Sep 2021 Publication Status: Review Complete
More...Abstract
The family Brassicaceae includes plants that are non-host for arbuscular mycorrhizal fungi (AMF). These plants are characterized by the production of glucosinolates, a group of allelopathic compounds consisting of anionic thioglucosides, with a role in plant defence. The overexpression of the Thkel1 gene from the beneficial fungus Trichoderma harzianum in rapeseed plants modified glucosinolate metabolism reducing the accumulation of toxic isothiocyanathes due to hydrolysis of these secondary metabolites. As a result, a symbiotic association between rapeseed plants and AMF could be established, accompanied by a significant increase in the seed yield, and improved fatty acid composition of the corresponding oilseed, both under optimal and abiotic stress conditions.
Keywords: Mychorrhyzation, Thkel1, Brassicaceae, Glucosinolates, Trichoderma, productivity, oil quality
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