A Critical Review of Aflatoxin Contamination of Peanuts in Malawi and Zambia: The Past, Present, and Future

Peanut (Arachis hypogaea L.) is an important crop in Malawi and Zambia. The crop is valued for soil improvement in cereal-based cropping systems, for improving the livelihoods of farming households who consume it and also sell it for cash, and for earning foreign exchange when exported. Research and development efforts have resulted in an increase in both peanut production area and productivity. However, a key challenge that still needs to be solved in these countries is how to produce peanuts with acceptable levels of aflatoxin contamination. Data continues to show that aflatoxin continues to be a problem in both formal and informal trade. As a result, unlike 30 years ago, most of the peanut trade has now shifted to domestic and regional markets that do not restrict the sale of aflatoxin-contaminated peanuts. Impacts of aflatoxin contamination on health and also on the full cost burden of control are not well documented. Technologies are available for mitigating against aflatoxin contamination. The advantages, disadvantages, and gaps associated with these technologies are discussed. Considerable money and effort continues to be invested in Malawi and Zambia into mitigating aflatoxin contamination, but evidence of long-term success is limited. Based on past and current initiatives, the prospects of eliminating aflatoxin in the near future at the household level and in trade are not promising.

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Potential Long-Term Benefits of No-Tillage and Organic Cropping Systems for Grain Production and Soil Improvement

Agronomy Journal ◽

10.2134/agronj2006.0362 ◽

2007 ◽

Vol 99 (5) ◽

pp. 1297-1305 ◽

Cited By ~ 135

Author(s):

John R. Teasdale ◽

Charles B. Coffman ◽

Ruth W. Mangum

Keyword(s):

Cropping Systems ◽

Soil Improvement ◽

No Tillage ◽

Grain Production

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Transgressive Segregation and Long-Term Consistency for High TSWV Field Resistance in the ‘Georgia-06G’ Peanut Cultivar

Plant Health Progress ◽

10.1094/php-04-18-0018-rs ◽

2018 ◽

Vol 19 (3) ◽

pp. 201-206 ◽

Cited By ~ 1

Author(s):

W. D. Branch ◽

A. K. Culbreath

Keyword(s):

Disease Incidence ◽

The United States ◽

Transgressive Segregation ◽

Field Resistance ◽

Breeding Lines ◽

Tomato Spotted Wilt ◽

Arachis Hypogaea L ◽

Production Area ◽

Wilt Virus

Tomato spotted wilt disease caused by tomato spotted wilt virus (TSWV) is a major peanut (Arachis hypogaea L.) production problem in the United States. TSWV has become endemic since the mid-1980s in the southeastern U.S. peanut production area. ‘Georgia-06G’ is a large-seeded, TSWV-resistant, runner-type peanut cultivar, whereas ‘Georgia Greener’ is a sister line with a smaller seed size than Georgia-06G. Both Georgia-06G and Georgia Greener have greater TSWV general field resistance with higher yields, total sound mature kernels grade, and dollar values than the parents (‘Georgia Green’ and ‘C-99R’), which shows transgressive segregation for these desirable quantitative traits. Therefore, the objective of this 12-year study was to evaluate the higher TSWV host-plant resistance found in the Georgia-06G over time compared with many other runner- and virginia-type peanut cultivars and advanced breeding lines. Despite yearly variability in TSWV and total disease incidence, the data indicate that Georgia-06G exhibited long-term high TSWV and total disease field resistance at midseason and late season, respectively. Georgia-06G was also found to have among the highest pod yield and dollar value every year. The higher general TSWV field resistance of Georgia-06G appears to be consistent across many years and locations, similar to the moderate TSWV resistance in Georgia Green.

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Demographic gaps between Syrian and the European populations: What do they suggest?

BORDER CROSSING ◽

10.33182/bc.v7i2.462 ◽

2017 ◽

Vol 7 (2) ◽

pp. 207-230 ◽

Cited By ~ 2

Author(s):

Mustafa Murat Yucesahin ◽

Ibrahim Sirkeci

Keyword(s):

Transition Theory ◽

World Population ◽

Demographic Analysis ◽

Demographic Differences ◽

Syrian Crisis ◽

The United Kingdom ◽

Syrian Population ◽

Displaced People ◽

Near Future

Syrian crisis resulted in at least 6.1 million externally displaced people 983,876 of whom are in Europe while the rest are in neighbouring countries in the region. Turkey, due to its geographical proximity and substantial land borders with the country, has been the most popular destination for those fleeing Syria since April 2011. Especially after 2012, a sharp increase in the number of Syrian refugees arriving in Turkey was witnessed. This has triggered an exponential growth in academic and public interest in Syrian population. Numerous reports mostly based on non-representative sample surveys have been disseminated whilst authoritative robust analyses remained absent. This study aims to fill this gap by offering a comprehensive demographic analysis of the Syrian population. We focus on the demographic differences (from 1950s to 2015) and demographic trends (from 2015 to 2100) in medium to long term, based on data from World Population Prospects (WPP). We offer a comparative picture to underline potential changes and convergences between populations in Syria, Turkey, Germany, and the United Kingdom. We frame our discussion here with reference to the demographic transition theory to help understanding the implications for movers and non-movers in receiving countries in the near future.

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Influence of Long-term Cropping Systems on Soil Physical Properties Related to Soil Erodibility

Soil Science Society of America Journal ◽

10.2136/sssaj2003.0637 ◽

2003 ◽

Vol 67 (2) ◽

pp. 637 ◽

Cited By ~ 14

Author(s):

Achmad Rachman ◽

S. H. Anderson ◽

C. J. Gantzer ◽

A. L. Thompson

Keyword(s):

Physical Properties ◽

Cropping Systems ◽

Soil Physical Properties ◽

Soil Erodibility

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Changes in Bacterial and Fungal Soil Communities in Long-Term Organic Cropping Systems

Agriculture ◽

10.3390/agriculture11050445 ◽

2021 ◽

Vol 11 (5) ◽

pp. 445

Author(s):

Jessica Cuartero ◽

Onurcan Özbolat ◽

Virginia Sánchez-Navarro ◽

Marcos Egea-Cortines ◽

Raúl Zornoza ◽

...

Keyword(s):

Microbial Community ◽

Crop Yield ◽

Soil Microbial Community ◽

Cropping Systems ◽

Sequencing Analysis ◽

Soil Microbial Community Structure ◽

Soil Microbial ◽

Network Analyses ◽

Organic Cultivation

Long-term organic farming aims to reduce synthetic fertilizer and pesticide use in order to sustainably produce and improve soil quality. To do this, there is a need for more information about the soil microbial community, which plays a key role in a sustainable agriculture. In this paper, we assessed the long-term effects of two organic and one conventional cropping systems on the soil microbial community structure using high-throughput sequencing analysis, as well as the link between these communities and the changes in the soil properties and crop yield. The results showed that the crop yield was similar among the three cropping systems. The microbial community changed according to cropping system. Organic cultivation with manure compost and compost tea (Org_C) showed a change in the bacterial community associated with an improved soil carbon and nutrient content. A linear discriminant analysis effect size showed different bacteria and fungi as key microorganisms for each of the three different cropping systems, for conventional systems (Conv), different microorganisms such as Nesterenkonia, Galbibacter, Gramella, Limnobacter, Pseudoalteromonas, Pantoe, and Sporobolomyces were associated with pesticides, while for Org_C and organic cultivation with manure (Org_M), other types of microorganisms were associated with organic amendments with different functions, which, in some cases, reduce soil borne pathogens. However, further investigations such as functional approaches or network analyses are need to better understand the mechanisms behind this behavior.

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Correctable biliary atresia and cholangiocarcinoma: a case report of a 63-year-old patient

Surgical Case Reports ◽

10.1186/s40792-019-0748-9 ◽

2019 ◽

Vol 5 (1) ◽

Cited By ~ 1

Author(s):

Masaki Nio ◽

Motoshi Wada ◽

Hideyuki Sasaki ◽

Hiromu Tanaka ◽

Masatoshi Hashimoto ◽

...

Keyword(s):

Biliary Atresia ◽

Liver Tumors ◽

Malignant Tumors ◽

Porta Hepatis ◽

Case Presentation ◽

Cancer Occurrence ◽

Long Term Survivors ◽

Near Future

Abstract Background Although cancer occurrence following surgery for biliary atresia has gradually increased, the development of cholangiocarcinoma in a native liver survivor of biliary atresia is extremely rare. Case presentation A 3-month-old female patient with the correctable type of biliary atresia underwent a cystoduodenostomy. At 16 years of age, she underwent multiple surgeries including lysis of intestinal adhesions, ileostomy, and gastrojejunostomy at another hospital. At 54 years of age, she underwent lithotomy at the porta hepatis, resection of the residual cystic bile duct with gallbladder, and hepaticojejunostomy in Roux-en-Y fashion. As she approached the age of 63, her computed tomography scan showed no liver tumors. In the following year, she developed cholangiocarcinoma at the porta hepatis and underwent chemotherapy. However, the cancer progressed, and she died before she reached the age of 64 years. Conclusions Cholangiocarcinoma is extremely rare in patients with biliary atresia. However, physicians should follow up patients with biliary atresia as closely as possible, as malignant tumors secondary to biliary atresia may increase in number in the near future because of the growing number of long-term survivors with biliary atresia.

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Management problems in the pregnant diabetic

Fetal and Maternal Medicine Review ◽

10.1017/s096553950000070x ◽

1993 ◽

Vol 5 (1) ◽

pp. 29-38 ◽

Cited By ~ 2

Author(s):

FA Van Assche

Keyword(s):

Gestational Diabetes ◽

Pathological Condition ◽

Metabolic Adaptation ◽

Medical Complication ◽

Mother And Child ◽

Insulin Dependent ◽

Underlying Mechanisms ◽

Near Future ◽

Pregnant Diabetic

Major progress has been made in the knowledge and management of diabetes and pregnancy. However diabetes in pregnancy remains an important medical complication, with implications for mother and child in both the short and the long term. There are still controversies concerning the diagnostic criteria of gestational diabetes and concerning the best strategry for the treatment of this disorder. There is even less agreement about whether gestational diabetes is a pathological condition. The perinatal mortality in gestational diabetes has recently become as low as that in the general population. This has led to the conclusion that gestational diabetes is no more than a variant of metabolic adaptation during pregnancy. However, fetal hyperinsulinism is present in gestational diabetes, resulting in macrosomia, neonatal complications and most probably long term consequences. Improvements in the care of the preexisting insulin-dependent pregnant diabetic have been achieved but further progress in understanding the underlying mechanisms and in preventing and treating the disease are important goals for the near future.

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Diversity of Root Bacteria from Peanut Cropping Systems

Peanut Science ◽

10.3146/pnut.31.2.0005 ◽

2004 ◽

Vol 31 (2) ◽

pp. 86-91 ◽

Cited By ~ 2

Author(s):

D. T. Gooden ◽

H. D. Skipper ◽

J. H. Kim ◽

K. Xiong

Keyword(s):

Fatty Acids ◽

Biological Control ◽

Gas Chromatography ◽

Cropping Systems ◽

Cropping System ◽

Critical Research ◽

Chromatography Analysis ◽

Rotation System ◽

Gas Chromatography Analysis ◽

Peanut Production

Abstract Rhizobacteria play an important role in sustainable agriculture via plant growth and biological control of pests in a number of ecosystems. Understanding the interactions of crop rotation and rhizobacteria on peanut production is a critical research need. Development of a database on the rhizobacteria obtained from continuous and rotational fields of peanut was initiated in 1997 and terminated in 2000. Peanut was planted in monoculture for 4 yr. In rotational plots, peanut, cotton, corn, and peanut were planted in sequence. Rhizobacteria were isolated from the roots of crop plants grown in a Norfolk soil near Florence, SC. These isolates were identified by composition of fatty acids from gas chromatography analysis (GC/FAME). Arthrobacter and Bacillus were the major genera from non-rhizosphere soils. At initiation of this study in July 1997, the plots selected for continuous peanut had more diversity in rhizobacteria than those plots selected for rotation. In July 2000, rhizobacteria diversity was greater from peanut roots in the rotation cropping system than continuous peanut. Even though rhizobacteria diversity was greater in the rotation system, higher peanut yields were recorded in the continuous peanut system in 2000. Burkholderia spp. were always isolated from the peanut and other crop rhizospheres at each sampling date.

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Biological Control and Mitigation of Aflatoxin Contamination in Commodities

Toxins ◽

10.3390/toxins13020104 ◽

2021 ◽

Vol 13 (2) ◽

pp. 104

Author(s):

Ferenc Peles ◽

Péter Sipos ◽

Szilvia Kovács ◽

Zoltán Győri ◽

István Pócsi ◽

...

Keyword(s):

Biological Control ◽

Secondary Metabolites ◽

Competitive Exclusion ◽

Aflatoxin Contamination ◽

Post Harvest ◽

Physical Chemical ◽

Synthetic Chemicals ◽

Ruminal Degradation

Aflatoxins (AFs) are toxic secondary metabolites produced mostly by Aspergillus species. AF contamination entering the feed and food chain has been a crucial long-term issue for veterinarians, medicals, agroindustry experts, and researchers working in this field. Although different (physical, chemical, and biological) technologies have been developed, tested, and employed to mitigate the detrimental effects of mycotoxins, including AFs, universal methods are still not available to reduce AF levels in feed and food in the last decades. Possible biological control by bacteria, yeasts, and fungi, their excretes, the role of the ruminal degradation, pre-harvest biocontrol by competitive exclusion or biofungicides, and post-harvest technologies and practices based on biological agents currently used to alleviate the toxic effects of AFs are collected in this review. Pre-harvest biocontrol technologies can give us the greatest opportunity to reduce AF production on the spot. Together with post-harvest applications of bacteria or fungal cultures, these technologies can help us strictly reduce AF contamination without synthetic chemicals.

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