Ana Karen Zaldívar-Ortega

Dr. Ana Karen Zaldívar-Ortega

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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ACAntonio de Jesus Cenobio-Galindo
Antonio de Jesus Cenobio-Galindo
AHAlma Delia Hernández-Fuentes
Alma Delia Hernández-Fuentes
UGUriel González-Lemus
Uriel González-Lemus
AZAna Karen Zaldívar-Ortega
Ana Karen Zaldívar-Ortega
LGLucio Gonzalez
Lucio Gonzalez
ISIridiam Hernández Soto
Iridiam Hernández Soto
Phytopathogenic fungi are responsible for diseases in commercially important crops and cause major supply problems in the global food chain. Plants were able to protect themselves from disease before humans played an active role in protecting plants. They are known to synthesize a variety of secondary metabolites (SMs), such as terpenes, alkaloids, and phenolic compounds, which can be extracted using conventional and unconventional techniques to formulate biofungicides; plant extracts have antifungal activity and various mechanisms of action against these organisms. In addition, they are considered non-phytotoxic and potentially effective in disease control. They are a sustainable and economically viable alternative for use in agriculture, which is why biofungicides are increasingly recognized as an attractive option to solve the problems caused by synthetic fungicides. Currently, organic farming continues to grow, highlighting the importance of developing environmentally friendly alternatives for crop production. This review provides a compilation of the literature on biosynthesis, mechanisms of action of secondary metabolites against phytopathogens, extraction techniques and formulation of biofungicides, biological activity of plant extracts on phytopathogenic fungi, regulation, advantages, disadvantages and an overview of the current use of biofungicides in agriculture.

16 December 2024 in Antioxidants
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AZAna Karen Zaldívar-Ortega
Ana Karen Zaldívar-Ortega
ACAntonio de Jesus Cenobio-Galindo
Antonio de Jesus Cenobio-Galindo
Nuria MorfinNuria Morfin
Nuria Morfin
Gabriel Aguirre-ÁlvarezGabriel Aguirre-Álvarez
Gabriel Aguirre-Álvarez
RCR.G. Campos-Montiel
R.G. Campos-Montiel
JHJUAN CARLOS HERNANDEZ
JUAN CARLOS HERNANDEZ
The most common bee species used for honey production is Apis mellifera (A. mellifera), followed by stingless bees. This study included scientific articles using the PRISMA approach. A random effect model was implemented and the effect size (ES) was calculated and reported as the standardized mean difference (SMD) and raw mean difference (RMD). The mean phenolic content in A. mellifera honey was 61.21 ± 28.3 mg GAE/100 g and stingless bee honey +33.69 mg GAE/100 g; p = 0.01. The antioxidant activity, discovered by the Ferric Reducing Antioxidant Power (FRAP) method, showed a mean of 97.34 ± 7.84 μmol Fe(II)/100 g in A. mellifera and stingless bee honey +63.39 μmol Fe(II)/100 g; p = 0.009. The physicochemical properties showed significant differences in moisture (A. mellifera honey 19.54 ± 3.65%; stingless bee honey +8.02%; p = 0.0001), hydroxymethylfurfural (HMF) (A. mellifera honey 20.14 ± 16.27 mg/kg; stingless bee honey −11.25 mg/kg; p = 0.001), and free acidity (A. mellifera honey 31.32 ± 16.67 meq/kg; stingless bee honey +34.76 meq/kg; p = 0.01). The variability in the trials was explained by the heterogeneity, and a meta-regression analysis incorporated four covariates: (1) stingless bee species; (2) floral source; (3) country, and (4) latitude. This study highlights the importance of conducting further studies on stingless bee honey.

5 March 2025 in Revista de Gestão Social e Ambiental
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AZAna Karen Zaldívar-Ortega
Ana Karen Zaldívar-Ortega
BFBenito Flores-Chávez
Benito Flores-Chávez
AHAlma Delia Hernández-Fuentes
Alma Delia Hernández-Fuentes
Uriel González-LemusUriel González-Lemus
Uriel González-Lemus
APAracely Hernández Pérez
Aracely Hernández Pérez
ISIridiam Hernández Soto
Iridiam Hernández Soto
Objective: To evaluate the effect of a tomato residue biostimulant on the growth and development of rasidsh (Raphanus sativus L) by comparing foliar and irrigation applications with a chemical treatment and a control. Theoretical Framework: The use of natural biostimulants from plant residues is a sustainable alternative to improve agricultural yields. Tomato residues contain phenolic compounds and flavonoids that promote the production of this crop. Method: The biostimulant was applied in three concentrations (25, 50 and 75 mL) by irrigation and foliar spraying. Aagronomic parameters such as plant height, leaf number, chlorophyll content and root biomass were evaluated. Results and Discussion: The 50 mL treatment applied by irrigation showed the greatest increases in growth and biomass, even outperforming the chemical treatment. The effectiveness of the biostimulant is attributed to its hight content of antioxidant compounds an its antioxidant capacity. Research Implications: These results suggest that tomato waste can be reused as agricultural biostimulants to promote more sustainable production. Originality/Value: This study demonstrates the potential of plant waste as an environmentally friendly agricultural input.

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NSNayla Tamara Sánchez-Granados
Nayla Tamara Sánchez-Granados
SPSergio Pérez-Ríos
Sergio Pérez-Ríos
YGYolanda Gonzalez-García
Yolanda Gonzalez-García
Fabián Fernández-LuqueñoFabián Fernández-Luqueño
Fabián Fernández-Luqueño
EAEliazar Aquino-Torres
Eliazar Aquino-Torres
ISIridiam Hernández Soto
Iridiam Hernández Soto
Lilium species produce some of the most commercially valuable ornamental flowers in the world, characterized by their attractiveness and high demand in cut flower markets. However, it is necessary to strengthen the competitiveness of this sector in the global market. Due to strong competition from international producers and an increasingly demanding market regarding quality, shelf life, and sustainability, alternatives are being sought to counteract the use of conventional agrochemicals. The use of nanoparticles has emerged as a promising strategy in ornamental horticulture due to their ability to enhance plant growth, improve stress tolerance, and stimulate physiological processes, ultimately contributing to higher quality and productivity. The hypothesis of this research is that the foliar application of selenium and titanium dioxide nanoparticles during the vegetative growth and flowering stages significantly enhances the growth, development, and flowering of Lilium plants when compared with untreated plants. Therefore, the physiological effects of SeNPs and TiO2NPs applied via foliar application in two concentrations (SeNPsD1, SeNPsD2, TiNPsD1, and TiNPsD2) were evaluated against absolute control. The treatments were applied in two phenological stages (vegetative and reproductive development), and their effects on vegetative and reproductive variables in Lilium plants were evaluated from 120 to 270 days after sowing. The surface of seeds obtained from SeNPsD1-treated plants was further analyzed via scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS). The results demonstrate that the application of SeNPs generated variable effects depending on the phenological stage. In the vegetative stage (46 DAS), SeNPsD2 increased the number of leaves by 118%, while SeNPsD1 increased the fresh weight of leaves by 110%. Regarding ovaries, the application of SeNPsD2 resulted in a 276% increase in fresh weight and a 230% increase in dry weight, while SeNPsD1 achieved an increase of 164% in fresh weight. Furthermore, at this stage, SeNPsD2 promoted a 223% increase in the number of bulbils, a 240% increase in fresh weight, and a 199% increase in dry weight. In the reproductive stage (69 DAS), SeNPsD1 increased the leaf fresh weight by 1% and yielded a 107% increase in the number of ovaries, in addition to 307% and 328% increases in their fresh and dry weights, respectively. In the same stage, SeNPsD2 increased the fresh ovary weight by 153%, compared with the control. Finally, capsule formation was observed only under the SeNPsD1 treatment. Meanwhile, TiO2NPs had an effect on the number of buds and the number of open buds: the number of buds increased by 115% with TiNPsD1 (69 DAS) and the number of open buds increased by 104% (46 DAS) with TiNPsD1; in the reproductive stage, the number increased by 115% with TiNPsD1 compared with the control. In the seed capsules of plants treated with selenium nanoparticles (SeNPsD1), although no surface selenium was detected via EDS, elements that had possibly been physiologically redistributed were identified, including iron (Fe), silicon (Si), and aluminum (Al). These findings confirm the hypothesis of this research, demonstrating that the foliar application of SeNPs and TiO2NPs to Lilium plants during the vegetative and reproductive stages significantly improves their vegetative growth, reproductive development, and floral quality under controlled conditions. This work presents the first comparative evidence regarding the effects of SeNPs and TiO2NPs on the vegetative and reproductive characteristics of Lilium Sunny Oriental, providing unprecedented information for the use of nanotechnology in ornamental horticulture. The findings confirm the potential use of nanoparticles as agents to optimize the productivity and commercial quality of ornamental flowers in highly competitive markets.

19 March 2025 in Horticulturae
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Uriel González-LemusUriel González-Lemus
Uriel González-Lemus
FTFélix Antonio Tapia-Zayago
Félix Antonio Tapia-Zayago
SPSergio Pérez-Ríos
Sergio Pérez-Ríos
AZAna Karen Zaldívar-Ortega
Ana Karen Zaldívar-Ortega
Edgar Omar Rueda-PuenteEdgar Omar Rueda-Puente
Edgar Omar Rueda-Puente
ISIridiam Hernández Soto
Iridiam Hernández Soto
Zucchini (Cucurbita pepo L.) is a crop of global economic importance. Therefore, there has been a continuous search for alternative cultivation methods that contribute to improving its growth and development. In the context of sustainable agriculture, plant protection techniques involve the use of substances of natural origin (e.g., biorooters), which have a positive impact on the production cycle of plants. In this study, the effects of a lentil biorooter on the growth and development of Italian zucchini were investigated. Five treatments were analyzed in the study: 25 (T1), 50 (T2) and 75 (T3) mL of the biorooter; a chemical rooting agent (“Raixen PLUS ©”; T4); and a control (T0). The results showed that the application of the lentil biorooter (T3) increased the plant height by 166%, the number of leaves by 113%, the aerial fresh weight by 169%, the root length by 165%, the fresh and dry root weights by 102% and 116%, and the number of flowers and female flowers by 89% and 177%, respectively, compared to the control (T0). In the case of the conventional rooting agent “Raixen PLUS ©” T4, compared to (T3), the following agro-nomic variables were reduced: plant height by 13%; the number of leaves by 124%; fresh and dry aerial weight by 103% and 107%, respectively; fresh and dry root weight by 9% and 117%, respectively; and the number of total and female flowers by 112% and 160%, respectively. Pearson correlation coefficients were calculated to compare the heights of the plant between the five treatments, as well as to compare the number of leaves to the fresh aerial weight and the length of the root to its fresh weight. Furthermore, the principal component analysis (PCA) results indicated that the differences between components 1 and 2 appeared to be positively influenced by the root length. These results suggest that lentil biorooters could be an ecological alternative to conventional rooters, thus mitigating the adverse effects of their use in zucchini crop production. This is the first study to report on the induction of growth and development using a lentil biorooter in zucchini.

5 July 2023 in Boletín de Ciencias Agropecuarias del ICAP
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AZAna Karen Zaldívar-Ortega
Ana Karen Zaldívar-Ortega
JBJuan Antonio Barrera-Jiménez
Juan Antonio Barrera-Jiménez
ACAntonio de Jesus Cenobio-Galindo
Antonio de Jesus Cenobio-Galindo
Elizabeth Perez SotoElizabeth Perez Soto
Elizabeth Perez Soto
MFMelitón Jesús Franco-Fernández
Melitón Jesús Franco-Fernández
RCR.G. Campos-Montiel
R.G. Campos-Montiel
El aguacate es un fruto tropical considerado nativo de América Tropical, Centroamérica y México. A diferencia de otros frutos, es bajo en azúcar y presenta una alta calidad nutricional debido a su contenido de vitaminas, minerales, proteínas, fibra y ácidos grasos insaturados. Además, se caracteriza por la presencia de diversos fitoquímicos, como la luteína, glutatión, β-sitosterol, antioxidantes fenólicos y fitoesteroles. Aunque la cáscara y la semilla del aguacate son consideradas productos de desecho y fuente potencial de contaminación, se ha demostrado que contienen una gran cantidad de fitoquímicos, incluyendo ácidos fenólicos, taninos condensados y flavonoides como procianidinas, flavonoles, ácidos hidroxibenzoico e hidroxicinámico. Se ha evidenciado que la cáscara y la semilla de aguacate poseen propiedades nutracéuticas y funcionales, mostrando potencial como agentes antimicrobianos, antiinflamatorios, anticancerígenos, antidiabéticos, antihipertensivos e inhibidores de reacciones oxidativas. Por lo tanto, el aguacate se considera un alimento funcional debido a los múltiples beneficios que aporta a la salud. La utilización de estos productos de desecho del aguacate no solo aprovecha su potencial nutracéutico, sino que también promueve prácticas en línea con el desarrollo sustentable, contribuyendo así al cuidado del medio ambiente.