scholarly journals Effect of Selected Trichoderma Strains and Metabolites on Olive Drupes

2021 ◽  
Vol 11 (18) ◽  
pp. 8710
Author(s):  
Irene Dini ◽  
Marica Pascale ◽  
Alessia Staropoli ◽  
Roberta Marra ◽  
Francesco Vinale
Keyword(s):  
Defense Mechanisms ◽  
Mechanisms Of Action ◽  
Growth Promoters ◽  
Phenolic Metabolites ◽  
Plant Growth Promoters ◽  
Biological Treatments ◽  
Soil Irrigation ◽  
Olive Trees ◽  
And Storage ◽  
Nutraceutical Properties

Beneficial fungal strains of the genus Trichoderma are used as biofungicides and plant growth promoters. Trichoderma strains promote the activation of plant defense mechanisms of action, including the production of phenolic metabolites. In this work, we analyzed the effects of selected Trichoderma strains (T. asperellum KV906, T. virens GV41, and T. harzianum strains TH1, M10, and T22) and their metabolites (harzianic acid and 6-pentyl-α-pyrone) on drupes of young olive trees (4-year-old) cv. Carolea. This study used the untargeted analysis of drupe metabolome, carried out by LC–MS Q-TOF, to evaluate the phenolics profiles and target metabolomics approach to detect oleuropein and luteolin. The untargeted approach showed significant differences in the number and type of phenolic compounds in olive drupes after Trichoderma applications (by root dipping and drench soil irrigation method) compared to control. The levels of oleuropein (secoiridoid) and luteolin (flavonoid) varied according to the strain or metabolite applied, and in some cases, were less abundant in treated plants than in the control. In general, flavonoids’ levels were influenced more than secoiridoid production. The dissimilar aptitudes of the biological treatments could depend on the selective competence to cooperate with the enzymes involved in producing the secondary metabolites to defend plants by environmental stresses. Our results suggest that using selected fungi of the genus Trichoderma and their metabolites could contribute to selecting the nutraceutical properties of the olive drupe. The use of the metabolites would bring further advantages linked to the dosage in culture and storage.

scholarly journals Seaweeds’ carbohydrate polymers as plant growth promoters

2021 ◽  
pp. 100097
Author(s):  
Diana Pacheco ◽  
João Cotas ◽  
Carolina P. Rocha ◽  
Glacio S. Araújo ◽  
Artur Figueirinha ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Promoters ◽  
Carbohydrate Polymers ◽  
Plant Growth Promoters

scholarly journals A Review of the Effects and Production of Spore-Forming Probiotics for Poultry

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1941
Author(s):  
Igor V. Popov ◽  
Ammar Algburi ◽  
Evgeniya V. Prazdnova ◽  
Maria S. Mazanko ◽  
Vladimir Elisashvili ◽  
...  
Keyword(s):  
Health Promotion ◽  
One Health ◽  
Mechanisms Of Action ◽  
Human Medicine ◽  
Poultry Industry ◽  
Growth Promoters ◽  
Wide Range ◽  
Antibiotic Growth Promoters ◽  
Spore Forming Bacteria ◽  
Unique Ability

One of the main problems in the poultry industry is the search for a viable replacement for antibiotic growth promoters. This issue requires a “one health” approach because the uncontrolled use of antibiotics in poultry can lead to the development of antimicrobial resistance, which is a concern not only in animals, but for humans as well. One of the promising ways to overcome this challenge is found in probiotics due to their wide range of features and mechanisms of action for health promotion. Moreover, spore-forming probiotics are suitable for use in the poultry industry because of their unique ability, encapsulation, granting them protection from the harshest conditions and resulting in improved availability for hosts’ organisms. This review summarizes the information on gastrointestinal tract microbiota of poultry and their interaction with commensal and probiotic spore-forming bacteria. One of the most important topics of this review is the absence of uniformity in spore-forming probiotic trials in poultry. In our opinion, this problem can be solved by the creation of standards and checklists for these kinds of trials such as those used for pre-clinical and clinical trials in human medicine. Last but not least, this review covers problems and challenges related to spore-forming probiotic manufacturing.

scholarly journals Trichoderma Strains and Metabolites Selectively Increase the Production of Volatile Organic Compounds (VOCs) in Olive Trees

Metabolites ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 213
Author(s):  
Irene Dini ◽  
Roberta Marra ◽  
Pierpaolo Cavallo ◽  
Angela Pironti ◽  
Immacolata Sepe ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Lipid Signaling ◽  
Plant Interactions ◽  
Growth Promoters ◽  
Volatile Organic ◽  
Trichoderma Fungi ◽  
Olive Trees ◽  
Plant Plant

Plants emit volatile organic compounds (VOCs) that induce metabolomic, transcriptomic, and behavioral reactions in receiver organisms, including insect pollinators and herbivores. VOCs’ composition and concentration may influence plant-insect or plant-plant interactions and affect soil microbes that may interfere in plant-plant communication. Many Trichoderma fungi act as biocontrol agents of phytopathogens and plant growth promoters. Moreover, they can stimulate plant defense mechanisms against insect pests. This study evaluated VOCs’ emission by olive trees (Olea europaea L.) when selected Trichoderma fungi or metabolites were used as soil treatments. Trichoderma harzianum strains M10, T22, and TH1, T. asperellum strain KV906, T. virens strain GV41, and their secondary metabolites harzianic acid (HA), and 6-pentyl-α-pyrone (6PP) were applied to olive trees. Charcoal cartridges were employed to adsorb olive VOCs, and gas chromatography mass spectrometry (GC-MS) analysis allowed their identification and quantification. A total of 45 volatile compounds were detected, and among these, twenty-five represented environmental pollutants and nineteen compounds were related to olive plant emission. Trichoderma strains and metabolites differentially enhanced VOCs production, affecting three biosynthetic pathways: methylerythritol 1-phosphate (MEP), lipid-signaling, and shikimate pathways. Multivariate analysis models showed a characteristic fingerprint of each plant-fungus/metabolite relationship, reflecting a different emission of VOCs by the treated plants. Specifically, strain M10 and the metabolites 6PP and HA enhanced the monoterpene syntheses by controlling the MEP pathway. Strains GV41, KV906, and the metabolite HA stimulated the hydrocarbon aldehyde formation (nonanal) by regulating the lipid-signaling pathway. Finally, Trichoderma strains GV41, M10, T22, TH1, and the metabolites HA and 6PP improve aromatic syntheses at different steps of the shikimate pathway.

Polysaccharides extracted from Moroccan seaweed: a promising source of tomato plant growth promoters

2018 ◽  
Vol 30 (5) ◽  
pp. 2953-2962 ◽  
Author(s):  
A. Mzibra ◽  
A. Aasfar ◽  
H. El Arroussi ◽  
M. Khouloud ◽  
D. Dhiba ◽  
...  
Keyword(s):  
Plant Growth ◽  
Tomato Plant ◽  
Growth Promoters ◽  
Plant Growth Promoters ◽  
Promising Source

Biotechnology and Environmental applications of Trichoderma spp.

2021 ◽  
pp. 149-157
Author(s):  
Waill A. Elkhateeb ◽  
Marwa O. Elnahas ◽  
Ghoson M. Daba ◽  
Abdel-Nasser A. Zohri
Keyword(s):  
Biological Control ◽  
Agricultural Soils ◽  
Hydrolytic Enzymes ◽  
Biological Control Agents ◽  
Growth Promoters ◽  
Trichoderma Spp ◽  
Trichoderma Species ◽  
Plant Growth Promoters ◽  
Different Strains ◽  
Soil Borne Fungi

The genus Trichoderma is multicultural soil-borne fungi found in different ecosystems. They are highly successful colonizers of their habitats. Genus Trichoderma is capable of dealing with various environments such as compost, agricultural soils, rhizosphere, and waste material. Therefore, different strains of Trichoderma have been applied in agriculture, bioremediation, waste management, and biotechnology. Many Trichoderma species act as biological control agents and plant growth promoters. Additionally, the genus Trichoderma is a new fungal source for the production of cyclosporin A as well as various hydrolytic enzymes with industrial importance.

Physiological Response of Dendrobium cv. Earsakul to Plant Growth Promoters and Growing Systems

2020 ◽  
pp. 343-354
Author(s):  
M. Raja Naik ◽  
K. Ajith Kumar ◽  
A. V. Santhoshkumar ◽  
P. K. Sudha Devi ◽  
M. Ramakrishna
Keyword(s):  
Plant Growth ◽  
Physiological Response ◽  
Growth Promoters ◽  
Plant Growth Promoters
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