asparagus officinalis
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2021 ◽  
Vol 49 (4) ◽  
pp. 12559
Author(s):  
Roman ANDRZEJAK ◽  
Beata JANOWSKA

The aim of the study was to determine the species composition of fungi of the Fusarium genus found on white Asparagus officinalis spears, depending on the presence or absence of disease symptoms, age of the plantation, date of harvest and the place from which samples were collected for mycological analysis. Additionally, the pathogenicity of selected Fusarium spp. isolates was determined. A. officinalis L. was cultivated for white spears. The research was conducted on the German dioecious cultivar ‘Eposs’. Samples of A. officinalis spears for tests were collected from two plantations. Six species of fungi of the Fusarium genus were identified in the asparagus spears: F. culmorum, F. equiseti, F. oxysporum, F. proliferatum, F. solani, and F. fujikuroi. Among the Fusarium species colonizing Asparagus officinalis the greatest threat is F. oxysporum. Always there are more isolates in the spears with the symptoms, in epidermis. The late harvest date favors the development of fusariosis. This means that the spears harvested at the latest date (late June) are the most heavily colonised by fungi. The isolates of fungi of the Fusarium genus collected from the spears exhibit pathogenicity against A. officinalis plants.


2021 ◽  
Vol 14 (12) ◽  
pp. 1325
Author(s):  
Francesca Paganelli ◽  
Francesca Chiarini ◽  
Annalisa Palmieri ◽  
Marcella Martinelli ◽  
Paola Sena ◽  
...  

The AHCC standardized extract of cultured Lentinula edodes mycelia, and the standardized extract of Asparagus officinalis stem, trademarked as ETAS, are well known supplements with immunomodulatory and anticancer potential. Several reports have described their therapeutic effects, including antioxidant and anticancer activity and improvement of immune response. In this study we aimed at investigating the effects of a combination of AHCC and ETAS on colorectal cancer cells and biopsies from healthy donors to assess the possible use in patients with colorectal cancer. Our results showed that the combination of AHCC and ETAS was synergistic in inducing a significant decrease in cancer cell growth, compared with single agents. Moreover, the combined treatment induced a significant increase in apoptosis, sparing colonocytes from healthy donors, and was able to induce a strong reduction in migration potential, accompanied by a significant modulation of proteins involved in invasiveness. Finally, combined treatment was able to significantly downregulate LGR5 and Notch1 in SW620 cancer stem cell (CSC) colonospheres. Overall, these findings support the potential therapeutic benefits of the AHCC and ETAS combinatorial treatment for patients with colorectal cancer.


Author(s):  
Bernardino Cruces-Pedraza

<p>My name is Bernardino Cruces Pedraza, I am 85 years old, and I am a producer of asparagus (<em>Asparagus officinalis</em>; editor’s note) in the ejido of Acuescomac, municipality of Atenco, State of Mexico. Many important things have happened in the country throughout my life, but nothing like the pandemic we are going through. At first, I thought it was fake news, I thought it was only meant to scare the people. I remembered the news about the ‘chupacabra’ in 1994. Or maybe it was something similar to the flu, which in my opinion was just a fleeting, harmless cold.To tell you the truth, I have never believed everything the news says, but as the months went by, I realized that this disease was really dangerous. I began to understand its importance when they closed the Iztapalapa supply center since that is where I sell my asparagus. The buyer told me that the government had made the decision to close the center due to a damn virus and that, as a consequence, the price of my product would go down, which would obviously affect me economically, me and my workers. In talks with friends, we made fun of and joked about the disease. It was rumored that it was just a government ploy to weed out the senior population as it couldn’t keep paying so much support. That made me angry, made me want to curse because people from the countryside do not live off the government. We work hard and our work is the most honest and the most worthy… We are not a burden to the government. By then it was the Spring-Summer season, and I was sowing asparagus, corn, and cabbage, in order to take advantage of the good rain and temperature of May, the month of my birthday. I felt safe in the field since I knew that the air there was good and that is why I would not be infected with anything; indeed, my lungs would be cleaned. That is why I did not wear a face mask, especially when I was working on my crops. Being in the field reassures me. When I’m weeding the field, my mind fills with memories of my childhood...memories from my entire life...memories of when we were not aware of anything else in the world, not like today...memories of my father, Mr. Narciso Cruces. He dedicated his life to working in the fields and raising cattle. Ever since I had use of reason, I helped him with that work, until I was 14 years old. It was then that American household appliance companies arrived, and I started working in the General Electric factory as a welder. Through hard work, I became a floor supervisor. I worked for that company for 40 years. Despite the hard work I did in the factory, I never left my father alone with the farm and livestock activities. It was only when I retired that I returned to work full-time to crop production. I changed from corn to vegetables due to a desire to relive my childhood. I know that working in the fields does not reward sentimentality. Working in the field requires hard work, commitment, and effort. It is true that the government provides some to agricultural producers in the form of livestock feed, fertilizer, tools, and agrochemicals, but I don’t like to depend on anyone. That is why I strive not to depend on external help but to be self-sufficient, with my own work.</p>


2021 ◽  
Author(s):  
Alexandra Wichura ◽  
Quentin Schorpp ◽  
Vera Kühlmann ◽  
Martin Hommes

AbstractAsparagus fly (Plioreocepta poeciloptera (Schrank, 1776)) is a serious pest in German asparagus (Asparagus officinalis L.) production. To evaluate the effects of different routine on-farm soil tillage measures on the number of flies emerging the following spring, asparagus fields in Lower Saxony, Germany, were investigated. Soil samples were taken before and after tillage in autumn 2017 and autumn 2018. Investigations were also conducted in both years on the effect that the soil depth at which asparagus fly pupae were buried had on the emergence of adult flies.This study revealed that the number of emerging flies was not reduced by mulching, but was significantly reduced by subsequent tillage and/or tillage and dam formation. The emergence rate of adult flies was significantly reduced the deeper the pupae had been buried the previous autumn. The effects also depended on the year. The highest mean emergence rate observed was 68% and 45% for pupae buried at a depth of 10 cm and 20 cm, respectively. In conclusion, the key mechanism causing a decrease in asparagus fly population the following spring through routine on-farm tillage could be the burial of pupae when forming dams. Routine on-farm soil tillage can be regarded as a physical measure for controlling asparagus fly and is therefore an essential tool in the integrated pest management of asparagus production.


Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 507
Author(s):  
Nikolaos Xekarfotakis ◽  
Theocharis Chatzistathis ◽  
Magkdi Mola ◽  
Triantafyllia Demirtzoglou ◽  
Nikolaos Monokrousos

The present study examined the effects of different nitrogen (NH4NO3) and potassium (KNO3) fertilization levels in combination with a nitrogen-fixing, plant growth-promoting rhizobacteria (PGPR) inoculation on the carbohydrate (CHO), amino acid content, and nutrient concentrations (N, P, K) in the spears and the root system of asparagus plants. No significant differences were indicated between the different fertilization treatments regarding N, P, and K in the leaves and roots of asparagus. The inoculation of the asparagus fields with PGPR, no matter the type of the inorganic fertilizer, resulted in increased CHO and amino acid content of the foliage and roots of asparagus. The highest CHO content and amino acid content were recorded in the treatment that combined PGPR inoculation along with KNO3 fertilizer, indicating that higher K applications acted synergistically with the added PGPR.


Revista Vitae ◽  
2021 ◽  
Vol 28 (3) ◽  
Author(s):  
Carla Pretell ◽  
Luis Márquez-Villacorta ◽  
Raúl Siche ◽  
María Hayayumi-Valdivia

Background: Asparagus (Asparagus officinalis L.) green is a vegetable with a great demand worldwide, and likewise, it is highly perishable due to its high respiration rate that accelerates its senescence. Disinfection of vegetables after their harvest is an obligatory practice that can reduce losses by decomposition due to the attack of microorganisms. Therefore, it is vital to preserving its microbiological and sensory characteristics to reach the final consumer. Objective: To evaluate the effect of gaseous ozone (0 to 10 ppm) and storage time (0 to 30 days) on phenol content, overall appearance, count of molds, psychrophilic bacteria, and viable mesophilic aerobes. Methods: the response surface methodology was used, applying a rotatable central composite design. Results: The results indicated that there was a significant influence (p <0.05) of the independent variables on the characteristics studied, as well as an adequate lack of fit of the quadratic regression model (p> 0.05). By means of the contour superposition technique, it was determined that the optimal conditions for the highest retention of phenol content (16.99 mg/g) and overall appearance (7.61 points) and lower counts of viable aerobic mesophilic bacteria (5.3 x 103 CFU/g) they corresponded to 10 ppm of gaseous ozone up to 25.91 days of storage, with adequate quality characteristics in the shoots. Conclusion: the region of interest was determined for optimal retention of phenol content and overall appearance, and a lower count of viable aerobic mesophilic bacteria in green asparagus during postharvest, suggesting to use the initial application of ozone gas at 10 ppm allowing 25.9 days storage at 1 °C. The results indicate that this technology is a good alternative in the conservation of fresh vegetables.


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