Phosphite (Phi), a reduced form of phosphate (Pi), is emerging as novel biostimulator in horticulture. Though there still no consensus on its physiological function P-source for plant nutrition, experimental evidence has shown that Phi can act biocide and affect production productivity. Positive effects metabolism are more evident when applied to the roots hydroponic systems or leaves foliar sprays presence sufficient Pi. Published research conclusively indicates functions an effective...

Zn is an indispensable nutrient for crops that usually presents low bioavailability. Different techniques have been proposed to improve the bioavailability of Zn, including use nanofertilizers. The objective study was evaluate applications drench (D) and foliar (F) ZnO nanoparticles (NZnO) compared those ionic Zn2+ (ZnSO4) in lettuce. plants cv. Great Lakes 407 produced pots 4 L with perlite-peat moss (1:1) under greenhouse conditions. treatments consisted NZnO replaced total provided a...

Vanadium (V) can be absorbed by plants and regulate their growth development, although contrasting effects have been reported among species handling conditions. The objective of this work was to evaluate the beneficial effect V on pepper (Capsicum annuum L.). were grown in a hydroponic system with application four concentrations (0, 5, 10, 15 μM NH₄VO₃). Four weeks after beginning treatments, growth, flowering, biomass, chlorophyll concentration, total amino acids, soluble sugars, nutrients...

Cerium (Ce) belongs to the rare earth elements (REEs), and although it is not essential for plants, can stimulate growth other physiological processes. The objective of this research was evaluate effect Ce on seed germination, initial seedling growth, vegetative in rice (Oryza sativa L.) cv. Morelos A-98. During germination process, seeds were treated with concentrations 0, 4, 8, 12 μM; after 5 d, percentage recorded 10 d measured. For a hydroponic system established where 14-d-old plants...

Silver nanoparticles (AgNPs) display unique biological activities and may serve as novel biostimulators. Nonetheless, their biostimulant effects on germination, early growth, major nutrient concentrations (N, P, K) in tomato (Solanum lycopersicum) have been little explored.Tomato seeds of the Vengador Rio Grande cultivars were germinated filter paper inside plastic containers presence 0, 5, 10, 20 mg/L AgNPs. Germination parameters recorded daily, while growth traits seedlings determined...

Salt stress affects crop growth and productivity. In this study, we determined the growth, yield of photosystem II (PSII), K+ Na+ concentration in root, stem, old leaves, young leaves two Mexican varieties rice, Tres Ríos Cotaxtla. addition, K+/Na+ ratio stem root both was determined. The experiment conducted a chamber under controlled conditions, completely randomized distribution, with 2 x (Variety Salinity) factorial arrangement 12 replications. Plants were grown hydroponic solution for...

Aluminum (Al) is a beneficial element for some plant species, especially when used at low concentrations. Though transcription factors are induced by exposure to this element, no data indicate that Al regulates the expression of NAC genes in rice. In study we tested effect applying 200 μM on growth, chlorophyll, amino acids, sugars, macronutrient concentration and regulation gene 24-day-old plants four rice (Oryza sativa ssp. indica) cultivars: Cotaxtla, Tres Ríos, Huimanguillo Temporalero,...

The efficiency of nanoparticles covered with type A gel and loaded KH 2 PO 4 , as a source P, was evaluated on growth, phosphorus concentration accumulation, photosynthesis-related parameters in rice plants ( Oryza sativa L. ssp. indica ) cv. Morelos A-2010, under greenhouse conditions. Plants were treated for 14 days P concentrations equivalent to 50 100% those established the Yoshida nutrient solution. Sources nano-KH trypsin; control treatments distilled water gel. solutions renewed every...

Lanthanum (La) is considered a beneficial element, capable of inducing hormesis. Hormesis dose-response relationship phenomenon characterized by low-dose stimulation and high-dose inhibition. Herein we tested the effect 0 10 µM La on growth biomolecule concentrations seedlings four sweet bell pepper (Capsicum annuum L.) varieties, namely Sven, Sympathy, Yolo Wonder Zidenka. Seedling evaluations were performed 15 30 days after treatment applications (dat) under hydroponic greenhouse...

Silicon (Si) is a beneficial element that has been proven to influence plant responses including growth, development and metabolism in hormetic manner.In the present study, we evaluated effect of Si on growth concentrations chlorophylls, total amino acids, sugars pepper plants (Capsicum annuum L.) during early developmental stage hydroponic system under conventional (unstressed) conditions. We tested four (applied as calcium silicate): 0, 60, 125 250 mg L-1, variables were measured 7, 14, 21...

We evaluated the effects of phosphate (Pi-deficiency: 0.1 mM; Pi-sufficiency: 0.5 mM), phosphite (low-Phi: medium-Phi: and high-Phi: 2.5 two mean daily photosynthetically active radiations (lower PAR: 22.2 mol·m-2·d-1; higher 29.7 mol·m-2·d-1), as well their interactions, on flavonoid, nitrate glucosinolate (GL) concentrations growth characteristics in hydroponically grown Brassica campestris cv. Mibuna Early juncea Red Giant. As expected, PAR increased dry matter contrariwise decreased...

Diacylglycerol kinase (DGK) regulates the level of second messenger diacylglycerol and produces phosphatidic acid (PA), another signaling molecule. The Arabidopsis thaliana genome encodes seven putative isozymes (named AtDGK1 to -7), structurally falling into three major clusters. So far, enzymatic activity has not been reported for any plant Cluster II DGK. Here, we demonstrate that a representative this cluster, AtDGK7, is biochemically active when expressed as recombinant protein in...

El cachichín (Oecopetalum mexicanum Greenm. & C.H. Thomps.) es un árbol silvestre nativo de la Sierra Misantla, Veracruz, México, que produce fruto con semilla comestible, a se le atribuyen importantes propiedades nutricionales y nutracéuticas gracias su contenido componentes proteicos, antioxidantes e hipoglucémicos. Para consumo, forma tradicional sometida diferentes tratamientos térmicos pueden afectar composición nutrimental. A fecha, no cuenta estudio detallado concentración...

Cachichín (Oecopetalum mexicanum) is a tree from Sierra de Misantla, Veracruz, Mexico, whose fruit produces seed traditionally consumed raw, boiled, or toasted. This study evaluated the effects of three thermal treatments (boiling, commercial toasting, and controlled toasting) on seed's physicochemical properties, including color, water activity (αw), fatty acid profile, using raw (unprocessed) seeds as reference. Results showed that significantly altered αw, lipid composition. Controlled...

Objective: To review the history of rare earths and their practical applications, as well to identify effects some on crops. Design/methodology/approach: We performed an exhaustive scientific literature related earth elements (REE), chemical characteristics, composition in Earth’s crust, uses industry, light (LREE) higher plants. The most relevant articles aforementioned topics interest were then selected, analyzed, discussed. Results: In recent years, industrial technological use REE has...

Phosphite (H 2 PO 3 -; Phi) has been shown to increase fruit quality and activate plant defense mechanisms in plants when provided a nutrient state with sufficient phosphorous.In this study, five solutions containing different percentages of Phi (0, 20, 30, 40 50%) Steiner's solution were evaluated during the flowering fructification stages; Steiner' s was kept al 50% stage at 75% from beginning on.The objective determine effects phosphite on total P concentration leaves, yield, pH,...

Diacylglycerol kinases (DGKs) are pivotal signaling enzymes that phosphorylate diacylglycerol (DAG) to yield phosphatidic acid (PA). The biosynthesis of PA from phospholipase D (PLD) and the coupled C (PLC)/DGK route is a crucial process in eukaryotic cells. Next PLD, PLC/DGK pathway second most important generator response biotic abiotic stresses. In cells, DGK, DAG, implicated vital processes such as growth, development, responses environmental cues. A plethora DGK isoforms have been...

Abstract We evaluated the effect of separately adding two sources lanthanum (La), LaCl 3 and La(NO ) × 6H 2 O at a concentration 40 µM each, to preservative solution 15 cut tulip flower varieties. Ascorbic acid (AsA; 0.2 g/L) was used as reference solution, while distilled water control. The variety Laura Fygi recorded longest vase life with 13 days. highest consumption per gram stem fresh biomass weight (FBW) (2.5 mL) observed in Violet Beauty, whereas lowest (1.098 Pink Impression. At end...

ABSTRACT The amount of water and fertilizers used in the production vegetables, specifically tomatoes, is high. This study was carried out to determine use efficiency closed open hydroponic systems for tomato under greenhouse conditions. Two treatments with eight replications were assessed; each replication consisted 67 pots two plants each. One treatment a system (with nutrient solution recirculation), other an non-recirculating solution). We quantified amounts applied, as well losses...

The rare earth element (REE) cerium (Ce) can act as a biostimulant in diverse crop plants. effects of 0, 5, 10, and 15 µM Ce (supplied CeCl3 7H2O) on seed germination the initial growth tomato (Solanum lycopersicum L.) cv. Vengador were evaluated. After 12 h imbibition, weight seeds treated with was 37.5% greater than that observed control. index 5 100% (101.93%), though when applying 10 this 17.53% lower control seeds. Nevertheless, treatments did not significantly affect coefficient...

Biosynthesis of silver nanoparticles (AgNPs) was achieved using extract Chenopodium ambrosioides as a reducer and coating agent at room temperature (25°C). Two molar solutions AgNO 3 (1 mM 10 mM) five volumes (0.5, 1, 2, 3, 5 mL) were used to assess quantity, shape, size the particles. The UV‐Vis spectra gave surface plasmon resonance 434–436 nm NPs synthesized with all tested, showing direct relationship between quantity particles formed. In contrast, concentration ions related negatively...


 El lulo (Solanum quitoense [Lamarck.]) es una solanácea que produce un fruto de exquisito sabor y propiedades nutracéuticas novedosas le convierten en especie gran potencial para su establecimiento aprovechamiento México. Esta originaria la región andina Colombia, Ecuador Perú, países donde se concentra producción aprovechamiento. Debido a diversas limitantes tanto orden técnico como comercial organizacional, este cultivo no abastece el mercado regional los sudamericanos, vez,...

The chilhuacle chili ( Capsicum annuum L.) is a Mexican native variety whose production has been highly valuable because it the main ingredient of Oaxacan black mole, typical dish. It basically grown in Cañada Region State Oaxaca, Mexico, within Tehuacán-Cuicatlán Biosphere Reserve. Importantly, cultivated under traditional agricultural systems, where range agronomic constraints associated with process and incidence severity pests diseases represent significant impediments that hinder yield...