scholarly journals A 3500-year-old leaf from a Pharaonic tomb reveals that New Kingdom Egyptians were cultivating domesticated watermelon

2019 ◽  
Author(s):  
Susanne S. Renner ◽  
Oscar A. Pérez-Escobar ◽  
Martina V. Silber ◽  
Mark Nesbitt ◽  
Michaela Preick ◽  
...  
Keyword(s):  
South Africa ◽  
West Africa ◽  
Stop Codon ◽  
Citrullus Lanatus ◽  
Geographic Origin ◽  
Central Africa ◽  
Genomic Data ◽  
Nile Valley ◽  
New Kingdom ◽  
Extant Species

AbstractDomestication of the watermelon (Citrullus lanatus) has alternatively been placed in South Africa, the Nile valley, or more recently West Africa, with the oldest archeological evidence coming from Libya and Egypt. The geographic origin and domestication of watermelons has therefore remained unclear. Using extensive nuclear and plastid genomic data from a 3,560-year-oldCitrullusleaf from a mummy’s sarcophagus and skimmed genomes for representatives of the seven extant species ofCitrullus, we show that modern cultivars and the ancient plant uniquely share mutations in a lycopene metabolism gene (LYCB) affecting pulp color and a stop codon in a transcription factor regulating bitter cucurbitacin compounds. This implies that the plant we sequenced had red-fleshed and sweet fruits and that New Kingdom Egyptians were cultivating domesticated watermelons. The genomic data also identify extant Sudanese watermelons with white, sweet pulp as the closest relatives of domesticated watermelons.Significance statementWith some 197.8 million tons in 2017, watermelon,Citrullus lanatus, is among the World’s most important crops, yet its area of origin and domestication have remained unclear, with competing hypotheses favoring South Africa, West Africa, Central Africa, or the Nile valley. We generated extensive nuclear and plastid genomic data from a 3500-year-old leaf from a Pharaonic sarcophagus and performed genome skimming for representatives of all otherCitrullusspecies to compare key genes involved in fruit bitterness and color. White-fleshed, non-bitter melons from southern Sudan are the closest relatives of domesticated watermelon, and the ancient genome shares unique alleles with a red-fleshed, non-bitter domesticated form (but no wild forms), implying that 18thDynasty Egyptians were cultivating domesticated watermelon by 3500 years ago.

Molecular investigation of the Pfmdr1 gene of Plasmodium falciparum isolates in Henan Province imported from Africa

Parasitology ◽  
2018 ◽  
Vol 146 (3) ◽  
pp. 372-379 ◽  
Author(s):  
Chengyun Yang ◽  
Ruimin Zhou ◽  
Ying Liu ◽  
Suhua Li ◽  
Dan Qian ◽  
...  
Keyword(s):  
South Africa ◽  
West Africa ◽  
East Africa ◽  
North Africa ◽  
Migrant Workers ◽  
Central Africa ◽  
Henan Province ◽  
Pfmdr1 Gene ◽  
Antimalarial Resistance ◽  
African Migrant

AbstractEfficacious antimalarial drugs are important for malaria control and elimination, and continuous monitoring of their efficacy is essential. The prevalence and distribution of Pfmdr1 were evaluated in African migrant workers in Henan Province. Among 632 isolates, 13 haplotypes were identified, NYSND (39.87%, 252/632), YYSND (2.85%, 18/632), NFSND (31.01%, 196/632), NYSNY (0.47%, 3/632), YFSND (13.77%, 87/632), NFSNY (0.32%, 2/632), YYSNY (2.06%, 13/632), YFSNY (0.16%, 1/632), N/Y YSND (1.90%, 12/632), N Y/F SND (6.17%, 39/632), N/Y Y/F SND (0.47%, 3/632), YYSN D/Y (0.16%, 1/632) and N/Y FSND (0.79%, 5/632). The highest frequency of NYSND was observed in individuals from North Africa (63.64%, 7/11), followed by South Africa (61.33%, 111/181), Central Africa (33.33%, 56/168), West Africa (28.94%, 68/235) and East Africa (27.03%, 10/37) (χ2 = 54.605, P < 0.05). The highest frequency of NFSND was observed in East Africa (48.65%, 18/37), followed by West Africa (39.14%, 92/235), Central Africa (26.79%, 45/168), South Africa (22.65%, 41/181) and North Africa (9.09%, 1/11) (χ2 = 22.368 P < 0.05). The mutant prevalence of codons 86 and 184 decreased. These data may provide complementary information on antimalarial resistance that may be utilized in the development of a treatment regimen for Henan Province.

scholarly journals The Life-history of the Native Mine Labourer in the Transvaal

1906 ◽  
Vol 6 (2) ◽  
pp. 149-174 ◽  
Author(s):  
L. G. Irvine ◽  
D. Macaulay
Keyword(s):  
South Africa ◽  
Life History ◽  
West Africa ◽  
East Coast ◽  
Central Africa ◽  
Gold Mines ◽  
Mining Areas ◽  
South West ◽  
History Of ◽  
South West Africa

In the month of June, 1905, no fewer than 99,518 natives were employed on mines and works in the labour districts of the Witwatersrand, and the neighbouring mining areas of Klerksdorp, Heidelberg, and Vereeniging. In addition to these there were also working on the gold mines over 45,000 Chinese labourers. This vast industrial army is recruited from many and in great measure from very distant sources. Of the natives employed during the year ending June, 1905, the whole of British South Africa furnished only just over 32%: less than 2% came from British Central Africa: 60% were drawn from the Southern Portuguese East Coast provinces; and 3.6% from the Portuguese provinces north of latitude 22°. German South-West Africa contributed under 1%, but this area has latterly ceased to be a source of supply.

Introduction

2018 ◽  
Author(s):  
Marina Sharpe
Keyword(s):  
West Africa ◽  
Great Lakes ◽  
East Africa ◽  
North Africa ◽  
Southern Africa ◽  
Theoretical Approach ◽  
Central Africa ◽  
Horn Of Africa ◽  
Refugee Protection

This introductory chapter begins by presenting the book’s structure in section A. Section B then delineates the book’s contours, outlining four aspects of refugee protection in Africa that are not addressed. Section C provides context, with a contemporary overview of the state of refugee protection in Africa. It also looks at the major aspects of the refugee situations in each of Africa’s principal geographic sub-regions: East Africa (including the Horn of Africa), Central Africa and the Great Lakes, West Africa, Southern Africa, and North Africa. Section D then concludes with an outline of the theoretical approach to regime relationships employed throughout the book.

scholarly journals Traversing a Tightrope between Ecumenism and Exclusivism: The Intertwined History of South Africa’s Dutch Reformed Church and the Church of Central Africa Presbyterian in Nyasaland (Malawi)

Religions ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 176
Author(s):  
Retief Müller
Keyword(s):  
South Africa ◽  
20Th Century ◽  
Social Relations ◽  
Central Africa ◽  
Church History ◽  
Dutch Reformed ◽  
Reformed Church ◽  
Christian Nationalism ◽  
The Church ◽  
Dutch Reformed Church

During the first few decades of the 20th century, the Nkhoma mission of the Dutch Reformed Church of South Africa became involved in an ecumenical venture that was initiated by the Church of Scotland’s Blantyre mission, and the Free Church of Scotland’s Livingstonia mission in central Africa. Geographically sandwiched between these two Scots missions in Nyasaland (presently Malawi) was Nkhoma in the central region of the country. During a period of history when the DRC in South Africa had begun to regressively disengage from ecumenical entanglements in order to focus on its developing discourse of Afrikaner Christian nationalism, this venture in ecumenism by one of its foreign missions was a remarkable anomaly. Yet, as this article illustrates, the ecumenical project as finalized at a conference in 1924 was characterized by controversy and nearly became derailed as a result of the intransigence of white DRC missionaries on the subject of eating together with black colleagues at a communal table. Negotiations proceeded and somehow ended in church unity despite the DRC’s missionaries’ objection to communal eating. After the merger of the synods of Blantyre, Nkhoma and Livingstonia into the unified CCAP, distinct regional differences remained, long after the colonial missionaries departed. In terms of its theological predisposition, especially on the hierarchy of social relations, the Nkhoma synod remains much more conservative than both of its neighboring synods in the CCAP to the south and north. Race is no longer a matter of division. More recently, it has been gender, and especially the issue of women’s ordination to ministry, which has been affirmed by both Blantyre and Livingstonia, but resisted by the Nkhoma synod. Back in South Africa, these events similarly had an impact on church history and theological debate, but in a completely different direction. As the theology of Afrikaner Christian nationalism and eventually apartheid came into positions of power in the 1940s, the DRC’s Nkhoma mission in Malawi found itself in a position of vulnerability and suspicion. The very fact of its participation in an ecumenical project involving ‘liberal’ Scots in the formation of an indigenous black church was an intolerable digression from the normative separatism that was the hallmark of the DRC under apartheid. Hence, this article focuses on the variegated entanglements of Reformed Church history, mission history, theology and politics in two different 20th-century African contexts, Malawi and South Africa.

scholarly journals State and evolution of the African rainforests between 1990 and 2010

2013 ◽  
Vol 368 (1625) ◽  
pp. 20120300 ◽  
Author(s):  
Philippe Mayaux ◽  
Jean-François Pekel ◽  
Baudouin Desclée ◽  
François Donnay ◽  
Andrea Lupi ◽  
...  
Keyword(s):  
West Africa ◽  
Forest Cover ◽  
Central Africa ◽  
Congo Basin ◽  
Landsat Images ◽  
Deforestation Rate ◽  
Rural And Urban ◽  
Moderate Resolution ◽  
Underlying Causes ◽  
Moderate Resolution Imaging Spectroradiometer

This paper presents a map of Africa's rainforests for 2005. Derived from moderate resolution imaging spectroradiometer data at a spatial resolution of 250 m and with an overall accuracy of 84%, this map provides new levels of spatial and thematic detail. The map is accompanied by measurements of deforestation between 1990, 2000 and 2010 for West Africa, Central Africa and Madagascar derived from a systematic sample of Landsat images—imagery from equivalent platforms is used to fill gaps in the Landsat record. Net deforestation is estimated at 0.28% yr −1 for the period 1990–2000 and 0.14% yr −1 for the period 2000–2010. West Africa and Madagascar exhibit a much higher deforestation rate than the Congo Basin, for example, three times higher for West Africa and nine times higher for Madagascar. Analysis of variance over the Congo Basin is then used to show that expanding agriculture and increasing fuelwood demands are key drivers of deforestation in the region, whereas well-controlled timber exploitation programmes have little or no direct influence on forest-cover reduction at present. Rural and urban population concentrations and fluxes are also identified as strong underlying causes of deforestation in this study.

Systematic revision of the living African Slender-snouted Crocodiles (Mecistops Gray, 1844)

Zootaxa ◽  
2018 ◽  
Vol 4504 (2) ◽  
pp. 151 ◽  
Author(s):  
MATTHEW H. SHIRLEY ◽  
AMANDA N. CARR ◽  
JENNIFER H. NESTLER ◽  
KENT A. VLIET ◽  
CHRISTOPHER A. BROCHU
Keyword(s):  
West Africa ◽  
Central Africa ◽  
West African ◽  
Valid Species ◽  
Morphological Evidence ◽  
Systematic Revision ◽  
Current State ◽  
History Of ◽  
Living Species ◽  
African Form

Molecular and morphological evidence has shown that the African slender-snouted, or sharp-nosed, crocodile Mecistops cataphractus (Cuvier, 1824) is comprised of two superficially cryptic species: one endemic to West Africa and the other endemic to Central Africa. Our ability to characterize the two species is compromised by the complicated taxonomic history of the lineage and overlapping ranges of variation in distinguishing morphological features. The name M. cataphractus was evidently originally based on West African material, but the holotype is now lost. Although types exist for other names based on the West African form, the name M. cataphractus is sufficiently entrenched in the literature, and other names sufficiently obscure, to justify retypification. Here, we designate a neotype for M. cataphractus and restrict it to West Africa. We resurrect M. leptorhynchus as a valid species from Central Africa and identify exemplary referred specimens that, collectively, overcome the obscurity and diagnostic limits of the extant holotype. We additionally indicate suitable neotype material in the event the holotype is lost, destroyed, or otherwise needing replacement, and we rectify the previously erroneous type locality designation. We provide a revised diagnosis for crown Mecistops, and revise and update previous descriptions of the two living species, including providing both more complete descriptions and discussion of diagnostic characters. Finally, we provide considerable discussion of the current state of knowledge of these species’ ecology, natural history, and distribution. 

Marl Clay Pottery Fabrics of the New Kingdom from Memphis, Saqqara and Amarna

1992 ◽  
Vol 78 (1) ◽  
pp. 29-91 ◽  
Author(s):  
J. D. Bourriau ◽  
P. T. Nicholson
Keyword(s):  
Ancient Egypt ◽  
Research Tool ◽  
Raw Material ◽  
Nile Valley ◽  
New Kingdom ◽  
Commodity Exchange ◽  
Thin Sections ◽  
Vienna System ◽  
The Way

This paper attempts to introduce a research tool essential for the study of production and trade and the way they were organized in ancient Egypt by examining marl clay pottery fabrics from the New Kingdom. Marl clay was the preferred raw material for the containers used in the transport of food within the Nile Valley and beyond. Sample sherds from Memphis, Saqqara and Amarna are described and illustrated macroscopically (20 × magnification) and microscopically (from thin sections). The results are used to create a concordance between the fabric classifications used at these sites, and with that used at Qantir and with the Vienna System. The data given will allow other archaeologists to link their own material to that described and so have access to the evidence this pottery provides on chronology and commodity exchange.

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