Plant growth-promoting bacteria (PGPB) have great potential to provide economical and sustainable solutions to current agricultural challenges. The Methylobacteria which are frequently present in the ...phyllosphere can promote plant growth and development. The Methylobacterium genus is composed mostly of pink-pigmented facultative methylotrophic bacteria, utilizing organic one-carbon compounds as the sole carbon and energy source for growth. Methylobacterium spp. have been isolated from diverse environments, especially from the surface of plants, because they can oxidize and assimilate methanol released by plant leaves as a byproduct of pectin formation during cell wall synthesis. Members of the Methylobacterium genus are good candidates as PGPB due to their positive impact on plant health and growth; they provide nutrients to plants, modulate phytohormone levels, and protect plants against pathogens. In this paper, interactions between Methylobacterium spp. and plants and how the bacteria promote crop growth is reviewed. Moreover, the following examples of how to engineer microbiomes of plants using plant-growth-promoting Methylobacterium are discussed in the present review: introducing external Methylobacterium spp. to plants, introducing functional genes or clusters to resident Methylobacterium spp. of crops, and enhancing the abilities of Methylobacterium spp. to promote plant growth by random mutation, acclimation, and engineering.
Melatonin is a well-known animal hormone with relevant and multiple cellular and hormonal roles. Its discovery in plants in 1995 has led to a great diversity of molecular and physiological studies ...that have been showing its multiple actions also in plants. Its roles as a biostimulator and modulator agent of responses to abiotic and biotic stresses have been widely studied. This review raises the possible use of melatonin as a natural safener in herbicide treatments. Existing studies have shown excellent co-acting qualities between both the following agents: herbicide and melatonin. The presence of melatonin reduces the damage caused by the herbicide in the crop and enhances the stress antioxidant response of plants. In this area, a similar role is suggested in the co-action between fungicides and melatonin, where a synergistic response has been demonstrated in some cases. The possible reduction in the fungicide doses is proposed as an eco-friendly advance in the use of these pesticides in certain crops. Finally, future research and applied actions of melatonin on these pest control agents are suggested.
Body Harmonization: The Definition of a New Concept Barbosa, Antony de Paula; Espasandin, Isabela; Pinheiro de Lima, Lucas ...
Clinical, cosmetic and investigational dermatology,
01/2023, Letnik:
16
Journal Article
Recenzirano
Odprti dostop
Body Harmonization (BHA) is an innovative concept in aesthetics area based on a set of advanced injectable techniques that have shown promising results for body shaping. This is based on procedure ...combinations indicated to treat body aesthetic dysfunctions, such as localized fat, stretch marks, blemishes, flaccidity, buttocks remodeling, lean mass gain and muscle definition. This study aims to define the clinical concept of BHA, its applications and the main protocols used based on injectable pharmacotherapy. For this purpose, we performed a retrospective review of proven efficient injectable procedures with advanced results for the treatment of body aesthetic disorders, in addition to relying on data obtained from previous clinical experiences. Based on these data, we describe how different compounds can act for treatment of the main body aesthetic dysfunctions, such as lipolytic compounds and collagen biostimulators. In addition, the main application techniques and treatment protocols for each of these dysfunctions were defined. Minimally invasive injectable procedures offer an effective therapeutic option for patients who do not intend to undergo surgical interventions.
The research was developed with the objective of evaluating the effect of QuitoMax® on the yield of garlic cultivation under organoponic conditions, clone “Chileno”, for this, four treatments were ...studied: T1 (control treatment, without the application of the product); T2 (100 mg ha-1); T3 (150 mg ha-1) and T4 (200 mg ha-1). The experiment was developed in the organoponic belonging to the Urban Farm, located at the University of Matanzas, a substrate made up of 80 % soil (red Ferralitic) and 20 % organic matter was used, arranged in a completely randomized design. Samples were carried out at 30 and 60 days after planting the crop to determine the agromorphological variables: number of leaves, height of the plants and diameter of the base of the bulb and at the time of harvest, the yield variables were measured: the weight of the bulb, its equatorial and polar width and the number of teeth. The behavior of the morphological and performance indicators did not allow to define in a significant way a stimulating effect of QuitoMax®, in the doses evaluated on the biological performance of garlic with respect to the control treatment, under the established study conditions. In the variables height of the plants and number of leaves, a positive response of the crop was evidenced in the period of greatest growth with the best response in the dose of 150 mg ha-1.
Sugar sorghum is mainly used for green fodder, haylage and silage. The accumulation of sugars occurs throughout the growing season. The relevance of the study is to identify a high-yielding variety ...or hybrid of sugar sorghum containing a large amount of sugars, which are later used for the manufacture of feed. The purpose of the study: to assess the impact of agrotechnical techniques on the feed evaluation of sugar sorghum. Tasks: to consider the dynamics of the accumulation of sugars in the stems of sugar sorghum; to calculate the yield of sugar from the stems of sugar sorghum; to determine the biochemical composition and gross energy of the green mass of sugar sorghum. The experience is three-factor in four-fold repetition. The experimental fi were located in the LLC “Kuznetsovskaya” Agricultural Complex of the Ilovlinsky district. The research period is 2009...2015. The research provided for the study of the nutritional value of sugar sorghum (crude protein, fat, protein, sugar, BEV). When determining the dynamics of the accumulation of sugar sorghum, the best indicator was on the variant of the joint use of the biostimulator of growth Lignohumate and mineral fertilizer on the hybrid Slavyansk homestead. For dump tillage, the average accumulation of sugars on this hybrid varied from 5.5 to 18.4% of dry matter, for zero tillage – 6.1 to 18.65%. The amount of sugar yield was influenced by the yield and concentration of sugars in the stems. The largest content was on the hybrid Slavic household. For dump and zero tillage, the best option was against the background of the combined use of a growth biostimulator and mineral fertilizer, amounting to 11.3 and 13.3 t/ha, respectively. When further determining the biochemical composition of sorghum, the best indicators for the content of crude protein, fat, fi and ash were on the Debut variety. On the Slavic fi VS variety and the Slavic homestead hybrid, these indicators had average values. The amount of nitrogen-free extractive substances contained more on the Slavic homestead hybrid, averaging 64.9%.
The functional silica-based materials functionalized with a strong nitrogen base TBD (SiO2-TBD) deposited via a linker or with a basic poly(amidoamine) dendrimer containing multiple terminal amine ...groups -NH2 (SiO2-EDA) and functional polymers containing a strong phosphazene base (Polymer-Phosphazene) or another basic poly(amidoamine) dendrimer (PMVEAMA-PAMAM) were tested as sorbents dedicated to a mixture of nitrophenols (p-nitrophenol and 2-methoxy-5-nitrophenol), which are analogs of nitrophenols used in plant growth biostimulants. The adsorptive potential of the studied materials reached 0.102, 0.089, 0.140, and 0.074 g of the nitrophenols g−1, for SiO2-TBD, SiO2-EDA, polymer-phosphazene, and PMVEAMA-PAMAM, respectively. The sorptive efficiency of the analytes, i.e., their adsorption on the functional materials, the desorption from the obtained (sorbent)H+ − nitrophenolates– complexes, and interactions with the used soil, were monitored using mass spectrometry (MS) technique with electrospray (ESI) and flowing atmosphere-pressure afterglow (FAPA) ionizations, for the analysis of the aqueous solutions and the solids, respectively. The results showed that the adsorption/desorption progress is determined by the structures of the terminal basic domains anchored to the materials, which are connected with the strength of the proton exchange between the sorbents and nitrophenols. Moreover, the conducted comprehensive MS analyses, performed for both solid and aqueous samples, gave a broad insight into the interactions of the biostimulants and the presented functional materials.
Auxins have been widely used to stimulate rhizogenesis in stem woody cuttings. Recently, more environmentally friendly biostimulators are reported to enhance rhizogenesis. Also, stock plants shading ...appears to be an easy and effective method to increase rooting of cuttings. The aim of the study was to examine the effect of shading and exogenous application of auxin or biostimulator AlgaminoPlant on rooting potential of two cultivars of dogwood (Cornus alba L.) and to detect anatomical modifications induced by shading that may be related to rooting ability. Stock plants were shaded with a nursery net reducing 50% of light for 6weeks prior to cuttings' harvest while the control stock plants were grown under ambient light. Cuttings from shaded and non-shaded plants were treated with a commercial rooting powder (1% IBA), sprayed with water solution of IBA (200mg·l−1) or with biostimulator AlgaminoPlant (0.2% v/v), whereas the control cuttings were sprayed with water. The effects of treatments were evaluated after 8weeks of rooting in a plastic tunnel. The two cultivars tested differed in natural as well as induced rooting potential, both in cuttings harvested from shaded stock plants and those grown under ambient light. Shading of stock plants significantly improved rooting abilities in comparison to control cuttings from plants grown under ambient light. Shading reduced diameters of stem and pith, with thinner layers of cortex, epidermis and collenchyma; vascular bundles and diameters of xylem vessels were also smaller. The thickness of leaf blades collected from shaded stock plants was lower due to thinner epidermal as well as spongy and palisade mesophyll layers. The best effects in rooting were obtained when shading was followed by the application of rooting inducers. The effects of synthetic auxin IBA and biostimulator AlgaminoPlant were similar; therefore, the latter is a viable option to reduce widespread use of rooting inducing chemicals based on synthetic auxins.
•Dogwood cultivars differ in natural rooting potential, cv. ‘Aurea’ has a higher rooting potential than ‘Elegantissima’.•Stock plants shading is the easiest and the most effective method to increase the rooting of woody dogwood cuttings.•The best effects in cuttings’ rooting are obtained when shading is followed by the application of rooting inducers.•The effect of synthetic auxin IBA and natural biostimulator AlgaminoPlant on cuttings’ rooting potential is comparable.•Shading induces anatomical changes that increase development of roots and make uptake of auxin or biostimulant easier.
Biostimulators with chemical protection are a challenge in sustainable agriculture to obtain high yield, healthy, and pesticide-free wheat. The aim of this four-year spring wheat field experiment was ...to assess the effectivity of using herbicide, mixed fungicides protection, and a humic biostimulator. The following treatments were tested: biostimulator (S), sulfosulfuron (H), H + S, H + propiconazole + cyproconazole/spiroxamin + tebuconazole + triadimenol (H + F1 + F2), and H + F1 + F2 + S. Evaluations of wheat yield and fungal diseases (Septoria tritici blotch, eyespot, sharp eyespot, Fusarium spp.) were performed using visual and qPCR methods. Thirteen mycotoxins were analyzed by LC–MS/MS. Infestations of six weeds were examined visually. Temperatures and precipitation data of the vegetative seasons were monitored. Precipitation most affected the occurrence of leaf diseases despite the same chemical/biostimulator treatments (up to 48% Septoria tritici blotch severity for the S treatment). The highest mean yield was obtained for H + F1 + F2 + S (5.27 t ha−1), while the lowest level of mycotoxins was obtained for H + F1 + F2 (221.68 µg kg−1). For H + S, a greater reduction of mycotoxins was determined compared to the H treatment (27.18%), as well as a higher severity of eyespot (18%) and sharp eyespot (24%). In 2017–2020, the most effective reduction of weed infestation and Fusarium spp. DNA on ears was indicated for H + F1 + F2 (16 g and 0.88 pg g−1 DNA, respectively). The greatest saved production value (196.15€) was determined for H + F1 + F2 + S.
Zbog čestih pojava stresnih uvjeta u poljoprivrednoj proizvodnji primjena biostimulatora postala je redovna tehnološka mjera. Pravilnom primjenom biostimulatora smanjuje se negativan učinak brojnih ...stresnih uvjeta, poput niske ili visoke temperature, nedostatka vlage i ostalih stresnih uvjeta. Danas se najviše upotrebljavaju biostimulatori na bazi aminokiselina jer oni imaju dokazani učinak na biljku, male doze primjene te prihvatljivu cijenu za poljoprivrednog proizvođača. Kod izbora biostimulatora potrebno je voditi računa o količini i sastavu aminokiselina u proizvodu kako bi primjenom bio ostvaren očekivani učinak. Na tržištu danas postoji veliki broj preparata te se izbor može prilagoditi svim vrstama poljoprivredne proizvodnje; od proizvodnje na otvorenim poljima ratarskih kultura do intenzivne proizvodnje povrća i cvijeća u zaštićenim prostorima.
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