Formation of 6-n-pentyl-2H-pyran-2-one (6-PAP) and other volatiles by different Trichoderma species

Jeleń, Henryk H.; Błaszczyk, Lidia; Chełkowski, J.; Rogowicz, Katarzyna; Strakowska, Judyta

doi:10.1007/s11557-013-0942-2

Cited by 91 publications

(57 citation statements)

References 59 publications

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“…Previous reports have shown the VOC profile from T. atroviride grown in potato dextrose agar (PDA), malt extract agar (MEA), or biomalt medium (BM) (Keszler et al ., ; Stoppacher et al ., ; Siddiquee et al ., ; Jeleń et al ., ; Lee et al ., ). All this research identified the compound 6‐PP within the corresponding VOC profile.…”

Section: Resultsmentioning

confidence: 97%

The volatile 6‐pentyl‐2H‐pyran‐2‐one from Trichoderma atroviride regulates Arabidopsis thaliana root morphogenesis via auxin signaling and ETHYLENE INSENSITIVE 2 functioning

et al. 2015

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Summary Plants interact with root microbes via chemical signaling, which modulates competence or symbiosis. Although several volatile organic compounds (VOCs) from fungi may affect plant growth and development, the signal transduction pathways mediating VOC sensing are not fully understood. 6‐pentyl‐2H‐pyran‐2‐one (6‐PP) is a major VOC biosynthesized by Trichoderma spp. which is probably involved in plant–fungus cross‐kingdom signaling. Using microscopy and confocal imaging, the effects of 6‐PP on root morphogenesis were found to be correlated with DR5:GFP, DR5:VENUS, H2B::GFP, PIN1::PIN1::GFP, PIN2::PIN2::GFP, PIN3::PIN3::GFP and PIN7::PIN7::GFP gene expression. A genetic screen for primary root growth resistance to 6‐PP in wild‐type seedlings and auxin‐ and ethylene‐related mutants allowed identification of genes controlling root architectural responses to this metabolite. Trichoderma atroviride produced 6‐PP, which promoted plant growth and regulated root architecture, inhibiting primary root growth and inducing lateral root formation. 6‐PP modulated expression of PIN auxin‐transport proteins in a specific and dose‐dependent manner in primary roots. TIR1, AFB2 and AFB3 auxin receptors and ARF7 and ARF19 transcription factors influenced the lateral root response to 6‐PP, whereas EIN2 modulated 6‐PP sensing in primary roots. These results indicate that root responses to 6‐PP involve components of auxin transport and signaling and the ethylene‐response modulator EIN2.

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Section: Resultsmentioning

confidence: 97%

The volatile 6‐pentyl‐2H‐pyran‐2‐one from Trichoderma atroviride regulates Arabidopsis thaliana root morphogenesis via auxin signaling and ETHYLENE INSENSITIVE 2 functioning

et al. 2015

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“…For Trichoderma spp., a bouquet of over 40 fungal VCs (Jelen et al . ) were shown to be capable of triggering growth promotion, adjustments in root architecture and enhanced immunity in Arabidopsis (Hung et al . ; Garnica‐Vergara et al ; Kottb et al .…”

Section: Introductionmentioning

confidence: 99%

“…Whereas the effects of bacterial VCs on plant growth and immunity are relatively well documented, studies on the impact of VCs from root-associated fungi are much scarcer. For Trichoderma spp., a bouquet of over 40 fungal VCs (Jelen et al 2014) were shown to be capable of triggering growth promotion, adjustments in root architecture and enhanced immunity in Arabidopsis (Hung et al 2013;Garnica-Vergara et al 2015;Kottb et al 2015). In this study, we investigated the role of VCs released by the ISR-inducing Trichoderma strains T. asperellum T-34 (T-34) and Trichoderma harzianum T-78 (T-78) in the induction of MYB72, Fe deficiency responses and ISR in Arabidopsis.…”

Section: Introductionmentioning

confidence: 99%

Airborne signals from Trichoderma fungi stimulate iron uptake responses in roots resulting in priming of jasmonic acid‐dependent defences in shoots of Arabidopsis thaliana and Solanum lycopersicum

Martínez‐Medina

Wees

Pieterse

2017

Plant Cell & Environment

128

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Root colonization by Trichoderma fungi can trigger induced systemic resistance (ISR). In Arabidopsis, Trichoderma-ISR relies on the transcription factor MYB72, which plays a dual role in the onset of ISR and the activation of Fe uptake responses. Volatile compounds (VCs) from rhizobacteria are important elicitors of MYB72 in Arabidopsis roots. Here, we investigated the mode of action of VCs from Trichoderma fungi in the onset of ISR and Fe uptake responses. VCs from Trichoderma asperellum and Trichoderma harzianum were applied in an in vitro split-plate system with Arabidopsis or tomato seedlings. Locally, Trichoderma-VCs triggered MYB72 expression and molecular, physiological and morphological Fe uptake mechanisms in Arabidopsis roots. In leaves, Trichoderma-VCs primed jasmonic acid-dependent defences, leading to an enhanced resistance against Botrytis cinerea. By using Arabidopsis micrografts of VCs-exposed rootstocks and non-exposed scions, we demonstrated that perception of Trichoderma-VCs by the roots leads to a systemic signal that primes shoots for enhanced defences. Trichoderma-VCs also elicited Fe deficiency responses and shoot immunity in tomato, suggesting that this phenomenon is expressed in different plant species. Our results indicate that Trichoderma-VCs trigger locally a readjustment of Fe homeostasis in roots, which links to systemic elicitation of ISR by priming of jasmonic acid-dependent defences.

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“…Trichoderma atroviride with high inhibitory activity against various Fusarium species was isolated from maize ears from the 2005 harvest and with high frequency in 2014. Isolates of these species were able to significantly reduce growth and mycotoxin production of highly pathogenic Fusarium species (Gromadzka et al 2009;Jeleń et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Fumonisins and related Fusarium species in pre-harvest maize ear rot in Poland

Gromadzka

Wit

Górna

et al. 2017

Cereal Research Communications

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Formation of 6-n-pentyl-2H-pyran-2-one (6-PAP) and other volatiles by different Trichoderma species

Abstract: Seventy-seven headspaceTrichoderma isolates belonging to eight species-

Cited by 91 publications

References 59 publications

The volatile 6‐pentyl‐2H‐pyran‐2‐one from Trichoderma atroviride regulates Arabidopsis thaliana root morphogenesis via auxin signaling and ETHYLENE INSENSITIVE 2 functioning

The volatile 6‐pentyl‐2H‐pyran‐2‐one from Trichoderma atroviride regulates Arabidopsis thaliana root morphogenesis via auxin signaling and ETHYLENE INSENSITIVE 2 functioning

Airborne signals from Trichoderma fungi stimulate iron uptake responses in roots resulting in priming of jasmonic acid‐dependent defences in shoots of Arabidopsis thaliana and Solanum lycopersicum

Fumonisins and related Fusarium species in pre-harvest maize ear rot in Poland

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