scholarly journals GMOs are not a human invention: sweet potato is a naturally transgenic food crop

2015 ◽  
Vol 01 (03) ◽  
Author(s):  
Tina Kyndt
Keyword(s):  
Sweet Potato ◽  
Food Crop ◽  
Transgenic Food

scholarly journals The genome of cultivated sweet potato containsAgrobacteriumT-DNAs with expressed genes: An example of a naturally transgenic food crop

2015 ◽  
Vol 112 (18) ◽  
pp. 5844-5849 ◽  
Author(s):  
Tina Kyndt ◽  
Dora Quispe ◽  
Hong Zhai ◽  
Robert Jarret ◽  
Marc Ghislain ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Dna Sequences ◽  
Ipomoea Batatas ◽  
Pathogenic Bacteria ◽  
Arable Land ◽  
Artificial Chromosome ◽  
Plant Genome ◽  
Small Interfering Rnas ◽  
Food Crop ◽  
Transgenic Food

Agrobacterium rhizogenesandAgrobacterium tumefaciensare plant pathogenic bacteria capable of transferring DNA fragments [transfer DNA (T-DNA)] bearing functional genes into the host plant genome. This naturally occurring mechanism has been adapted by plant biotechnologists to develop genetically modified crops that today are grown on more than 10% of the world’s arable land, although their use can result in considerable controversy. While assembling small interfering RNAs, or siRNAs, of sweet potato plants for metagenomic analysis, sequences homologous to T-DNA sequences fromAgrobacteriumspp. were discovered. Simple and quantitative PCR, Southern blotting, genome walking, and bacterial artificial chromosome library screening and sequencing unambiguously demonstrated that two different T-DNA regions (IbT-DNA1 andIbT-DNA2) are present in the cultivated sweet potato (Ipomoea batatas[L.] Lam.) genome and that these foreign genes are expressed at detectable levels in different tissues of the sweet potato plant.IbT-DNA1 was found to contain four open reading frames (ORFs) homologous to the tryptophan-2-monooxygenase (iaaM), indole-3-acetamide hydrolase (iaaH), C-protein (C-prot), and agrocinopine synthase (Acs) genes ofAgrobacteriumspp.IbT-DNA1 was detected in all 291 cultigens examined, but not in close wild relatives.IbT-DNA2 contained at least five ORFs with significant homology to theORF14,ORF17n, rooting locus (Rol)B/RolC,ORF13, andORF18/ORF17ngenes ofA. rhizogenes.IbT-DNA2 was detected in 45 of 217 genotypes that included both cultivated and wild species. Our finding, that sweet potato is naturally transgenic while being a widely and traditionally consumed food crop, could affect the current consumer distrust of the safety of transgenic food crops.

Analisis Nutrisi Umbi Ubi Jalar (Ipomoea batatas (L.) Lam.) untuk Konsumsi Bayo dan Anak-anak Suku Dani di Distrik Kurulu Kabupaten Jayawijaya

Agrotek ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Andrew B. Pattikawa ◽  
Antonius Suparno ◽  
Saraswati Prabawardani
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Nutritional Value ◽  
Animal Feed ◽  
Ash Content ◽  
Infants And Children ◽  
Chemical Analyses ◽  
Food Crop ◽  
Sweet Potatoes ◽  
Development Center

<em>Sweet potato is an important staple food crop especially for the local people of Central Highlands Jayawijaya. There are many accessions that have always been maintained its existence to enrich their various uses. Traditionally, sweet potato accessions were grouped based on the utilization, such as for animal feed, cultural ceremonies, consumption for adults, as well as for infants and children. This study was aimed to analyze the nutritional value of sweet potatoes consumed by infants and children of the Dani tribe. Chemical analyses were conducted at the Laboratory of Post-Harvest Research and Development Center, Cimanggu, Bogor. The results showed that each of 4 (four) sweet potato accessions which were consumed by infants and children had good nutrient levels. Accession Sabe showed the highest water content (72.56%), vitamin C (72.71 mg/100 g), Fe (11.85 mg/100 g), and K levels (130.41 mg / 100 grams). The highest levels of protein (1.44%), fat (1.00%), energy (154.43 kkal/100 gram), carbohydrate (35.47%), starch (30.26%), reducing sugar (3.44%), riboflavin (0.18 mg/100 g), and vitamin A (574.40 grams IU/100 were produced by accession Manis. On the other hand, accession Saborok produced the highest value for ash content (1.32%), vitamin E (28.30 mg/100 g), and ?-carotene (64.69 ppm). The highest level of crude fiber (1.81 %) and thiamin (0.36 mg/100 g) was produced by accession Yuaiken.</em>

scholarly journals Effect of extrusion-cooking in total carotenoids content in cream and orange flesh sweet potato cultivars

2008 ◽  
Vol 26 (1) ◽  
pp. 112-115 ◽  
Author(s):  
Marcos José de O Fonseca ◽  
Antonio G Soares ◽  
Murillo Freire Junior ◽  
Dejair L de Almeida ◽  
José Luiz R Ascheri
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Potato Cultivars ◽  
Extrusion Cooking ◽  
Potato Flour ◽  
Food Crop ◽  
Total Carotenoids ◽  
Sweet Potato Flour

Sweet potato (Ipomoea batatas) is a food crop that supplies energy, minerals and vitamins C and B. Some cultivars are very rich in carotenoids (pro-vitamin A). In this study were evaluated and compared the total carotenoids content of two cultivars and the losses on the dehydrated extruded sweet potato flour. Samples from organic and conventional crops were analyzed, in the form of fresh and dehydrated extruded samples. Total carotenoids content of the fresh product, expressed on wet basis, was of 437 µg 100 g-1 for the cream cultivar and 10,12 µg 100 g-1 for the orange cultivar. After dehydration, losses of total carotenoids were of 41% and 38%, respectively. The fresh orange cultivar presented high total carotenoids content in comparison to the cream cultivar. The extruded orange sweet potato flour showed the lowest losses in total carotenoids. Therefore, the processed flour of orange sweet potato could be used to obtain pre-gelatinized extruded flour with high total carotenoids content.

scholarly journals PRODUKTIVITAS LAHAN, KOMPETISI, DAN TOLERANSI DARITIGA KLON UBIJALAR PADA SISTEM TUMPANG SARI DENGAN JAGUNG

EUGENIA ◽  
2016 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeanne Martje Paulus
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Research Station ◽  
Food Crop ◽  
Land Productivity ◽  
Land Equivalent Ratio ◽  
Biotechnology Research ◽  
Planting Distance ◽  
Crop Biotechnology ◽  
Experimental Garden

ABSTRACT Paulus, J.M. 2005. Land Productivity, Competition, and Tolerance of Three Sweet Potato Clones Planted as Intercroping with Maize. Eugenia 11 (1): 1-7. A field experiment was conducted in Cikeumeuh Experimental Garden of Food Crop Biotechnology Research Station (BAUTBIO) Bogor to study Land Equivalent Ratio (LER), Competition Ratio (CR), and Stress Tolerance (TOL) of sweet potato and maize. The highest tuber yiled of sweet potato was 16,83 ton ha-[1] gained by CIP-2 at 100 cm planting distance of maize and the highest maize yiled was 4,50 ton ha-1 Cangkuang in intercropping with Cangkung clone. The LER, CR, and TOL, CIP-2 and SQ were suitable for intercrops at all planting distance but Cangkuang was not suitable for intercrops with maize. Keywords: Ipomoea batatas, clon, intercroping [1] Jurusan Budidaya Pertanian, Fakultas Pertanian UNSRAT Manado, 95115

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