The Rhizosphere of Coffea Arabica in Its Native Highland Forests of Ethiopia Provides a Niche for a Distinguished Diversity of Trichoderma

Mulaw, Temesgen Belayneh; Kubicek, Christian P.; Druzhinina, Irina S.

doi:10.3390/d2040527

Cited by 51 publications

(15 citation statements)

References 44 publications

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“…This could explain, at least partially, the abundance of Trichoderma species in rhizosphere of coffee plants. 17 Caffeine-producing plants directly benefit from Trichoderma species to cope with pathogens. In addition, host plants also indirectly benefit from Trichoderma species through activation of plant growth potential, priming for defense reaction and antibiotic production.…”

Section: Discussionmentioning

confidence: 99%

“…16 The idea was partially substantiated by a finding that rhizosphere of Coffea arabica in Ethiopian highlands was rich in species of filamentous fungus, Trichoderma. 17 Diverse Trichoderma species were also found among coffee endophytic fungi that colonize healthy tissues. 18,19 Trichoderma population was enriched in coffee waste containing caffeine »0.1% in wet weight.…”

Section: Introductionmentioning

confidence: 99%

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Caffeine fostering of mycoparasitic fungi against phytopathogens

Sugiyama

Sano

Yazaki

et al. 2016

Plant Signaling & Behavior

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Abbreviation: PDA, potato dextrose agar Caffeine (1,3,7-trimethixanthine) is a typical purine alkaloid produced in more than 80 plant species. Its biological role is considered to strengthen plant's defense capabilities, directly as a toxicant to biotic attackers (allelopathy) and indirectly as an activator of defense system (priming). Caffeine is actively secreted into rhizosphere through primary root, and possibly affects the structure of microbe community nearby. The fungal community in coffee plant rhizosphere is enriched with particular species, including Trichoderma family, a mycoparasite that attacks and kills phytopathogens by coiling and destroying their hyphae. In the present study, the caffeine response of 8 filamentous fungi, 4 mycoparasitic Trichoderma, and 4 prey phytopathogens, was examined. Results showed that allelopathic effect of caffeine on fungal growth and development was differential, being stronger on pathogens than on Trichoderma species. Upon confronting, the prey immediately ceased the growth, whereas the predator continued to grow, indicating active mycoparasitism to have occurred. Caffeine enhanced mycoparasitism up to 1.7-fold. Caffeine thus functions in a double-track manner against fungal pathogens: first by direct suppression of growth and development, and second by assisting their natural enemy. These observations suggest that caffeine is a powerful weapon in the arms race between plants and pathogens by fostering enemy's enemy, and we propose the idea of "caffeine fostering" as the third role of caffeine.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Caffeine fostering of mycoparasitic fungi against phytopathogens

Sugiyama

Sano

Yazaki

et al. 2016

Plant Signaling & Behavior

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“…Donc, le milieu naturel à base de pomme de terre (PDA) se révèle être le milieu le plus adéquat pour la culture de Trichoderma vus les composés complexes qui le constituent par rapport aux milieux synthétiques (MEA, SB, DOX) qui sont moins favorables à la croissance des souches. Ces résultats sont en accord avec ceux obtenus par Ubalua et OtiE (2007), Verma (2007, Moussaoui (2010), Jahan et al (2013), Srivastava et al (2014) (Kubicek et al, 2003 ;Zhang et al, 2005 ;Mulaw et al, 2010 ;Skoneczny et al, 2015).…”

Section: Effet De La Salinitéunclassified

Influence <i>in vitro</i> de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de <i>Trichoderma</i> sp.

Gueye¹,

Ndiaye²,

Sarr³

et al. 2016

Int. J. Bio. Chem. Sci

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Influence in vitro de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de Trichoderma sp. RESUMELes Trichoderma sont des champignons imparfaits saprophytes que l'on retrouve dans divers milieux comme le sol, le bois mort, les débris des végétaux et les organes aériens des plantes. Ils ont un rôle phytoprotecteur et stimulateur du développement des plantes associées. L'effet de différents facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de Trichoderma a été évalué. Ces souches ont été isolées à partir de la rhizosphère de la tomate. Une étude préliminaire a été effectuée sur quatre milieux de culture (PDA, MEA, SB et DOX) pour la sélection du milieu d'étude. Les résultats obtenus montrent que le milieu PDA permet une meilleure croissance des souches de Trichoderma. La température optimale de croissance des différentes souches est de 29 °C et le pH 5 se révèle être le plus adéquat pour la culture des Trichoderma. Cette étude montre également que les souches de Trichoderma résistent à des concentrations de sel (NaCl) allant jusqu'à 3%. © 2016 International Formulae Group. All rights reserved. Mots clés:Trichoderma, facteurs limitant, température, pH, salinité, milieu de culture.In vitro influence of various abiotic factors (température, pH, salinity) on mycelium growth of three local strains of Trichoderma sp. ABSTRACTTrichoderma are saprophytic imperfect fungi that are found in various environments such as soil, dead wood, vegetable fragments and plant aerial organs. They protect and stimulate development of related plants. Effects of various abiotic factors (temperature, pH, salinity) on mycelium growth of three local Trichoderma strains were investigated. These strains were isolated from tomato rhizosphere. A preliminary study was performed on four culture media (PDA, MEA, SB and DOX) for the selection of the best media. The results N. GUEYE et al. / Int. J. Biol. Chem. Sci. 10(2): 769-778, 2016 770 showed that PDA medium was highly growth of Trichoderma strains. The optimum temperature for growth of different strains is 29 °C and pH 5 was found to be most suitable for Trichoderma culture. Indeed, Trichoderma strains resistant to salt concentrations (NaCl) up to 3%.

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“…So far, approximately 40 soil-inhabiting Trichoderma species have been recorded around the world in many publications (e.g. Kubicek et al 2003;Wuczkowski et al 2003;Yu et al 2007;Hoyos-Carvajal et al 2009;Migheli et al 2009;Mulaw et al 2010;Kredics et al 2012;Sun et al 2012;Li et al 2013;L opezQuintero et al 2013;Al-Sadi et al 2015), which accounts for a small fraction of the more than 260 known species of the genus (Chaverri and Samuels 2003;Zhu and Zhuang 2014b;Bissett et al 2015).…”

Section: Introductionmentioning

confidence: 97%

“…Among the 482 isolations in soil from the Island of Sardinia, Migheli et al (2009) identified 14 species. Mulaw et al (2010) reported eight species from the 134 strains in rhizosphere soils of Coffea arabica in Native Highland Forests of Ethiopia. Kredics et al (2012) discovered 11 species among the 116 strains from chopped roots of winter wheat of five agricultural fields in the Great Hungarian Plain.…”

Section: Introductionmentioning

confidence: 98%

Trichoderma shennongjianum and Trichoderma tibetense, two new soil-inhabiting species in the Strictipile clade

Chen

Zhuang

2016

Mycoscience

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Morphology rpb2 Sequence analyses tef1 a b s t r a c t Two new species of Trichoderma are described based on soil samples from the Hubei and Tibet regions of China, and named as Trichoderma shennongjianum and Trichoderma tibetense.The combined analyses of morphology and sequence data, including culture characteristics, features of asexual states, and phylogeny inferred from partial sequences of translation elongation factor 1-a and the second largest RNA polymerase subunit encoding genes were carried out. Both species belong to the Strictipile clade, which previously contained only three species. Distinctions between the new species and their relatives are discussed. Trichoderma shennongjianum is related to T. longipile, and is characterized by variability in the sizes of its phialides and conidia and sequence data. Trichoderma tibetense appeared as a separate terminal branch related to T. strictipile, and is distinctive by its high growth rate and conidiophore branching pattern.

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The Rhizosphere of Coffea Arabica in Its Native Highland Forests of Ethiopia Provides a Niche for a Distinguished Diversity of Trichoderma

Cited by 51 publications

References 44 publications

Caffeine fostering of mycoparasitic fungi against phytopathogens

Caffeine fostering of mycoparasitic fungi against phytopathogens

Influence <i>in vitro</i> de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de <i>Trichoderma</i> sp.

Trichoderma shennongjianum and Trichoderma tibetense, two new soil-inhabiting species in the Strictipile clade

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