Effect of Colonization of Trichoderma harzianum on Growth Development and CBD Content of Hemp (Cannabis sativa L.)

Kakabouki, Ioanna; Tataridas, Alexandros; Mavroeidis, Antonios; Kousta, Angeliki; Karydogianni, Stella; Ζisi, Charikleia; Kouneli, Varvara; Konstantinou, Artemis; Folina, Antigolena; Konstantas, Aristidis; Papastylianou, Panayiota

doi:10.3390/microorganisms9030518

Cited by 24 publications

(10 citation statements)

References 83 publications

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“…Using important processes such as the dissolution of soluble minerals and nitrogen stabilization, PGPMs facilitate the nutrients uptake by plants [ 33 ]. In the case of cannabis, PGPMs such as Trichoderma harzianum has been found to boost the growth of the plants and affect their agronomic characteristics [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rhizophagus irregularis on Growth and Quality of Cannabis sativa Seedlings

Kakabouki

Mavroeidis

Tataridas

et al. 2021

Plants

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Rhizophagus irregularis is an arbuscular mycorrhiza fungus that can enhance plant nutrition and reduce transplant shock on seedlings. The present study aims to evaluate the effects of this fungus on the quality of cannabis (Cannabis sativa L.) seedlings. A greenhouse float system experiment was conducted in a completely randomized design with three treatments. The treatments included the application of 40, 80 and 120 fungus spores per L of nutrient solution (AMF1, AMF2 and AMF3, respectively). The evaluation was performed based on the agronomic characteristics of the seedlings (root and stem length and weight, stem diameter), N and P content, survival rate, and the Dickson’s quality index (DQI). Results indicated that root length and stem dry weight were significantly increased (by 34.14% and 21.4%, respectively) in the AMF3 treatment. The biomass of the seedlings’ roots, the fresh weight and the N content were not affected by the AMF. On the contrary, survival rate, P content and DQI were significantly increased in AMF3 (by 5%, 24.3% and 12.4% respectively). Overall, our findings suggest that the application of high doses of Rhizophagus irregularis (AMF3) on float system-produced cannabis seedlings results in a considerable increment of their quality.

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Section: Introductionmentioning

confidence: 99%

Effect of Rhizophagus irregularis on Growth and Quality of Cannabis sativa Seedlings

Kakabouki

Mavroeidis

Tataridas

et al. 2021

Plants

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“…Our investigation is supported by the work of ( Machado et al, 2012 ) who reported that Trichoderma species promoted plant growth in agriculture by enhancing hormone production and increase of some nutrient absorption by the plant. Currently, Kakabouki et al (2021) reported that Trichoderma species can enhance plant development, nutrient uptake and resistance to biotic and abiotic stresses.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the herbicidal potential of some fungal species against Bidens pilosa, the coffee farming weeds

Daba

Berecha

Tadesse³

et al. 2021

Saudi Journal of Biological Sciences

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Weeds are the most productive limiting factor, especially in organic farming systems where the uses of synthetic herbicides are not allowed due to their negative impacts. Hence, synthetic herbicides need to be replaced with biological herbicides for weed management. Thus, the present study was designed to evaluate the herbicidal activity of conidia suspensions from Aspergillus niger , Trichoderma asperlium , Trichoderma atroviride , Trichoderma hamatum , Trichoderma harzanium , Trichoderma longibrachatum and Trichoderma viride against Bidens pilosa weed via a series of laboratory and lath-house conditions that laid out in a CRD and RCBD, respectively, with three replications for each bioassay. The results revealed that all fungi, except T. longibrachatum , had significantly reduced seed germination as well as early growth of the target weed compared to the untreated control. The inhibitory effects were measured to be varied among the types of conidia suspensions of fungal species and their level of concentration. The highest rate of inhibition was observed for conidia suspension from A. niger which suppressed with the maximum seed germination inhibitory level (65%) over control. Likewise, the plumule and radicle growth length of the target weed also significantly inhibited by the tested fungi (ranging from 10 to 85% and 34 to 97%) compared to the control, respectively. Based on their efficacy in the laboratory bioassay, the herbicidal potential of selected fungi was further evaluated in pot experiments. In contrarily to laboratory observations, the effect of different fungal conidia suspensions on various growth parameters of the targeted weed was insignificant in the lath-house experiments. In conclusion, the application of A. niger displayed some potential green light to be investigated as a biocontrol agent with promising retarding in the germination and early growth of B. pilosa . Hence, we recommend further investigation of those fungi under field conditions on different coffee weed species.

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“…The mechanism through which Trichoderma results in biostimulation involves multilevel communication with the root systems of the host plant [38]. Many Trichoderma strains are endophytic plant opportunistic symbionts that colonize the root, leading to the activation of defense and developmental responses of the host plant [39][40][41]. The secondary metabolites released into the rhizosphere by Trichoderma strains, including auxins, small peptides, and other active metabolites, can promote root branching and nutrient-uptake capacity, thereby boosting plant growth and yield [11].…”

Section: Discussionmentioning

confidence: 99%

Trichoderma atroviride LZ42 Releases Volatile Organic Compounds Promoting Plant Growth and Resisting Fusarium wilt Disease in Tomatoes

Jiang¹,

Rao²,

Zeng³

et al. 2021

Preprint

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The promotion of plant growth and suppression of plant disease using beneficial microorganisms is considered an alternative to the application of chemical fertilizers or pesticides in the field. In this study, a coconut-scented antagonistic Trichoderma strain LZ42, previously isolated from Genoderma lucidum-cultivated soil, was investigated for biostimulatory and biocontrol functions in tomato seedlings. Morphological and phylogenetic analyses suggested that strain LZ42 is closely related to T. atroviride. Tomato plants showed increased aerial and root dry weights in greenhouse trials after treatment with T. atroviride LZ42 formulated in talc, indicating the biostimulatory function of this fungus. T. atroviride LZ42 effectively suppressed Fusarium wilt disease in tomato seedlings, with an 82.69% control efficiency, which is similar to that of fungicide treatment. The volatile organic compounds (VOCs) emitted by T. atroviride LZ42 were found to affect the primary root growth direction and promote the root growth of tomato seedlings in root Y-tube olfactometer assays. The fungal VOCs from T. atroviride LZ42 were observed to significantly inhibit F. oxysporum in a sandwiched Petri dish assay. SPME-GC-MS analysis revealed several VOCs emitted by T. atroviride LZ42; the dominant compound was tentatively identified as 6-pentyl-2H-pyran-2-one (6-PP). 6-PP exhibited a stronger ability to influence the direction of the primary roots of tomato seedlings but not the length of the primary roots. The inhibitory effect of 6-PP on F. oxysporum was the highest among the tested pure VOCs, showing a 50% effective concentration (EC50) of 5.76 μL mL-1 headspace. In conclusion, T. atroviride LZ42, which emits VOCs with multiple functions, is a promising agent for the biostimulation of vegetable plants and integrated management of Fusarium wilt disease.

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Effect of Colonization of Trichoderma harzianum on Growth Development and CBD Content of Hemp (Cannabis sativa L.)

Cited by 24 publications

References 83 publications

Effect of Rhizophagus irregularis on Growth and Quality of Cannabis sativa Seedlings

Effect of Rhizophagus irregularis on Growth and Quality of Cannabis sativa Seedlings

Evaluation of the herbicidal potential of some fungal species against Bidens pilosa, the coffee farming weeds

Trichoderma atroviride LZ42 Releases Volatile Organic Compounds Promoting Plant Growth and Resisting Fusarium wilt Disease in Tomatoes

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