Trichoderma harzianum elicits defence response genes in roots of potato plantlets challenged by Rhizoctonia solani

Gallou, Adrien; Cranenbrouck, Sylvie; Declerck, Stéphane

doi:10.1007/s10658-008-9407-x

Cited by 65 publications

(40 citation statements)

References 40 publications

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“…Root colonization by Trichoderma triggers a systemic response signaled by JA/ET in a way similar to that described for rhizobacteria (47). Systemic defenses induced by Trichoderma are also signaled by SA (48,49), though they vary depending on the plant genetic background, the interaction time, and the strain and inoculum size (5,50). In the present study, the in vitro assay showed that T. parareesei triggers defense responses against pathogens and salt stress in tomato seedlings.…”

Section: Discussionsupporting

confidence: 69%

Identifying Beneficial Qualities of Trichoderma parareesei for Plants

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et al. 2014

Appl Environ Microbiol

105

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Trichoderma parareesei and Trichoderma reesei (teleomorph Hypocrea jecorina) produce cellulases and xylanases of industrial interest. Here, the anamorphic strain T6 (formerly T. reesei) has been identified as T. parareesei, showing biocontrol potential against fungal and oomycete phytopathogens and enhanced hyphal growth in the presence of tomato exudates or plant cell wall polymers in in vitro assays. A Trichoderma microarray was used to examine the transcriptomic changes in T6 at 20 h of interaction with tomato plants. Out of a total 34,138 Trichoderma probe sets deposited on the microarray, 250 showed a significant change of at least 2-fold in expression in the presence of tomato plants, with most of them being downregulated. T. parareesei T6 exerted beneficial effects on tomato plants in terms of seedling lateral root development, and in adult plants it improved defense against Botrytis cinerea and growth promotion under salt stress. Time course expression patterns (0 to 6 days) observed for defense-related genes suggest that T6 was able to prime defense responses in the tomato plants against biotic and abiotic stresses. Such responses undulated, with a maximum upregulation of the jasmonic acid (JA)/ethylene (ET)-related LOX1 and EIN2 genes and the salt tolerance SOS1 gene at 24 h and that of the salicylic acid (SA)-related PR-1 gene at 48 h after T6 inoculation. Our study demonstrates that the T. parareesei T6-tomato interaction is beneficial to both partners.

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Section: Discussionsupporting

confidence: 69%

Identifying Beneficial Qualities of Trichoderma parareesei for Plants

Rubio

Quijada

Pérez

et al. 2014

Appl Environ Microbiol

105

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“…In fact, a systemic increase in SA and JA levels was observed after inoculation of high densities of Trichoderma (Segarra et al, 2007). Gallou et al (2009) also observed that the defence response of T. harzianumchallenged potato to Rhizoctonia solani was dependent on JA/ET and SA.…”

Section: Defence Signalling Pathways Induced By Trichodermamentioning

confidence: 81%

Plant-beneficial effects of Trichoderma and of its genes

et al. 2012

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Trichoderma (teleomorph Hypocrea) is a fungal genus found in many ecosystems. Trichoderma spp. can reduce the severity of plant diseases by inhibiting plant pathogens in the soil through their highly potent antagonistic and mycoparasitic activity. Moreover, as revealed by research in recent decades, some Trichoderma strains can interact directly with roots, increasing plant growth potential, resistance to disease and tolerance to abiotic stresses. This mini-review summarizes the main findings concerning the Trichoderma-plant interaction, the molecular dialogue between the two organisms, and the dramatic changes induced by the beneficial fungus in the plant. Efforts to enhance plant resistance and tolerance to a broad range of stresses by expressing Trichoderma genes in the plant genome are also addressed.

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“…It is also possible that induction of GST1, PR3, Lox, and PR1b was not detected in this study because different plants use different signaling pathways or defense genes in response to various pathogens. 26,27,[31][32][33][34][35] Alternatively, since the time course of defense response gene expression was not studied and defense gene expression may be time-dependent, this protocol may not have detected differences in gene expression related to JA/SA pathway activation. This finding also suggests that, apart from ISR, other indirect mechanisms (e.g.…”

Section: Resultsmentioning

confidence: 99%