Potential roles for microbial endophytes in herbicide tolerance in plants.

Pest Management Science
Catherine Tétard-Jones, Robert Edwards

Abstract

Herbicide tolerance in crops and weeds is considered to be monotrophic, i.e. determined by the relative susceptibility of the physiological process targeted and the plant's ability to metabolise and detoxify the agrochemical. A growing body of evidence now suggests that endophytes, microbes that inhabit plant tissues and provide a range of growth, health and defence enhancements, can contribute to other types of abiotic and biotic stress tolerance. The current evidence for herbicide tolerance being bitrophic, with both free-living and plant-associated endophytes contributing to tolerance in the host plant, has been reviewed. We propose that endophytes can directly contribute to herbicide detoxification through their ability to metabolise xenobiotics. In addition, we explore the paradigm that microbes can 'prime' resistance mechanisms in plants such that they enhance herbicide tolerance by inducing the host's stress responses to withstand the downstream toxicity caused by herbicides. This latter mechanism has the potential to contribute to the growth of non-target-site-based herbicide resistance in weeds. Microbial endophytes already contribute to herbicide detoxification in planta, and there is now significant scope to extend t...Continue Reading

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Citations

Jul 9, 2016·FEMS Microbiology Ecology·Friederike TrognitzAngela Sessitsch
Dec 3, 2016·Pest Management Science·Stephen O Duke
Feb 7, 2017·Scientific Reports·Federico SabbadinRobert Edwards
Apr 25, 2018·Pest Management Science·William Edward Dyer
Oct 27, 2017·Pest Management Science·Jonathan Gressel
Apr 20, 2018·Frontiers in Microbiology·Ihsanullah DaurHeribert Hirt
Jan 5, 2021·Heliyon·Marcos PileggiMichael J Sadowsky

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Methods Mentioned

BETA
environmental stresses
transgenic
genetic modification

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