Working Paper Article Version 1 This version is not peer-reviewed

The Trichoderma Atroviride Strains P1 and IMI 206040 Differ in Their Light-Response and VOC Production

Version 1 : Received: 9 December 2019 / Approved: 11 December 2019 / Online: 11 December 2019 (04:55:05 CET)

A peer-reviewed article of this Preprint also exists.

Speckbacher, V.; Ruzsanyi, V.; Wigger, M.; Zeilinger, S. The Trichoderma atroviride Strains P1 and IMI 206040 Differ in Their Light-Response and VOC Production. Molecules 2020, 25, 208. Speckbacher, V.; Ruzsanyi, V.; Wigger, M.; Zeilinger, S. The Trichoderma atroviride Strains P1 and IMI 206040 Differ in Their Light-Response and VOC Production. Molecules 2020, 25, 208.

Journal reference: Molecules 2020, 25, 208
DOI: 10.3390/molecules25010208

Abstract

Trichoderma atroviride is a strong necrotrophic mycoparasite antagonizing and feeding on a broad range of fungal phytopathogens. It further beneficially acts on plants by enhancing growth in root and shoot and inducing systemic resistance. Volatile organic compounds (VOCs) are playing a major role in all those processes. To date, T. atroviride IMI 206040 and T. atroviride P1 are among the most frequently studied T. atroviride strains and hence are used as model organisms to study mycoparasitism and photoconidiation. However, there are no studies available, which systematically and comparatively analyzed putative differences between these strains regarding their light-dependent behavior. We therefore explored the influence of light on conidiation and the mycoparasitic interaction as well as the light-dependent production of VOCs in both strains. Our data show that in contrast to T. atroviride IMI 206040 conidiation in strain P1 is independent of light. Furthermore, significant strain-and light-dependent differences in the production of several VOCs between the two strains became evident, indicating that T. atroviride P1 could be a better candidate for plant protection than IMI 206040.

Subject Areas

trichoderma atroviride; mycoparasitism; secondary metabolites; volatile organic compounds (VOCs); photoconidiation; fungi; 2-octanone; injury response; light response; fusarium oxysporum

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