- Genomic variation in tomato, from wild ancestors to contemporary breeding accessions. A first domestication in South America, a second step in Mesoamerica, occasional hybridization in the wild, differentiation through human selection. Some Ecuadorian and Peruvian diversity still unexplored for breeding.
- Characterization of a collection of local varieties of tomato (Solanum lycopersicum L.) using conventional descriptors and the high-throughput phenomics tool Tomato Analyzer. Instant gratification comes to tomato characterization.
- Molecular diversity and genetic structure of 380 sweetpotato accessions as revealed by SSR markers. Also a two-step domestication history? What are the odds?
- Association of SSR markers with contents of fatty acids in olive oil and genetic diversity analysis of an olive core collection. Let the molecular-assisted breeding begin.
- Genetic Evaluation of Nutritional and Fodder Quality of Different Bamboo Species. Remarkably, some species are ok.
- Genetic Diversity Among the Microorganisms in Daqu Used for Beidacang Liquor as Revealed by RAPD Analyses. Well that’s a new one on me, but it’s good to have the data.
- Farm animal genetic and genomic resources from an agroecological perspective. If you’re going to really be ecological in your management of livestock genetic resources, you need to factor in ecosystem services, and figure out how genomic tools are going to help you. Well, that pretty much goes for crops too, surely.
- The labor of agrodiversity in a Moroccan oasis. Not all agrobiodiversity is that old.
- Identification of pearl millet (Pennisetum glaucum (L.) R. Br.) germplasm with unique popping quality in the national genebank collections of India. Amazing what you can find in genebanks.
- Iniadi pearl millet germplasm as a valuable genetic resource for high grain iron. See what I mean?
All sweetpotatoes are transgenic
Tina Kyndta and collaborators ((Kyndt T, Quispe D, Zhai H, Jarret R, Ghislain M, Liu Q, Gheysen G, & Kreuze JF (2015). The genome of cultivated sweet potato contains Agrobacterium T-DNAs with expressed genes: An example of a naturally transgenic food crop. Proceedings of the National Academy of Sciences of the United States of America PMID: 25902487)) have found that all cultivated sweetpotatoes are naturally transgenic because they contain transfer DNA (T-DNA) sequences from Agrobacterium. Gene-transfer via Agrobacterium is a naturally occurring process, that is used to make genetically modified crops in the lab. We did not know that one of our main food crops was once naturally transformed via the same process.
Kyndta et al. did not find any T-DNA in the wild relatives of sweetpotato, suggesting that the transformation(s) provided a beneficial trait that was selected for during domestication. The introduced genes are intact and expressed in different organs of the “Huachano” variety that they studied in detail, but we’ll have to wait for future expression studies to find out about the benefit of these paleo-GMOs.
The authors also suggest that, as people have been eating these swollen roots for millennia, we might now consider all transgenic crops to be “natural”. I don’t know about that. Didn’t most of these people suffer and die young? I predict that sweetpotato consumption will plummet now that the word is out.
Nibbles: CWR gaps, Genebanks vid, Landrace cuisine, Perennial rice, High-tech evaluation, Egyptian cure, Weird tuber, Aroids news, Tibet transition, Worms & development, Hybrid artemisia, Sea potato, Grape microbes, Seed book, Seychelles parks, Brosimum hype, Kenya & bamboo, Tea & CC, Extinction and CC, Nutrition paradox
- CIAT crop wild relatives team announces 3 new papers on gaps in ex situ collections: potato, sweet potato & pigeonpea. Take a break, people, please.
- And CIAT genebank features in nice video on why we need genebanks. So also the IRRI genebank, which is relevant to the next Nibble. We do joined-up nibbling here.
- Fine dining with Filipino rice landraces. Go Manny!
- None of those rice landraces are perennial. Yet. If they ever are, it’ll be due to a wild relative.
- Fusarium head blight resistance in wheat dissected using a synchrotron. Avengers assemble!
- Oxyrhynchus papyrus identifies hangover cure. Or so the Daily Mail says, so, you know…
- Oh wow, the Mail is definitely on a botanical roll, now they’re all over a Kardashian-shaped tuber.
- New Edible Aroids Newsletter. Nothing Kim-shaped about these tubers.
- Wheat and barley replaced millet in E Tibet around 2000 BC after cooling period. This going into reverse now, I wonder?
- Some biodiversity you don’t want, trust me.
- Speaking of unwelcome biodiversity, there’s a new hope in the fight against malaria: hybrid artemisia.
- More on that potato that the Dutch are growing in sea water. Like they have a choice.
- Microbes are part of terroir.
- Q&A with The Triumph of Seeds author.
- The coco-de-mer is a pretty triumphant seed.
- You say ramòn nut, I say Maya nut.
- Kenya needs bamboo. Says the International Network for Bamboo & Rattan. Wow, two active crop networks in today’s Nibbles.
- Yesterday it was arabica that was in trouble, today tea. Damn you, climate change.
- They’re the lucky ones: they may be in trouble, but they’re not going extinct…
- More production does not automatically mean less stunting. Damn you, real world.
Nibbles: Long live genebanks, ART in Ireland, Peruvian cacao, Cacao & CC, Canadian aid & wheat, Coffee trials, Organic redux, American garden survey, Cranberry breeding, Bean breeding, Expo Milano 2015, Olive disease, Insect meal, Save cider, Garum, Asian PGR network, Fig vid, McCouch, Pastoralist Knowledge Hub
- Sexing up genebanks.
- Inventive wheat drought phenotyping. Want more?
- The Irish try out other Andean crops. Because the first one worked out so well.
- Peruvian cocoa goes up-market. Others might not get the chance.
- Latest batch of IDRC food security projects: African veggies, chickpeas, lentils… Meanwhile, back home in Canada…
- Some major coffee producers are probably in trouble. Will the International Multi-location Variety Trials help at all?
- Crop genomic data boffins say crop genomic data should be free. DivSeek unavailable for comment.
- The latest from Rodale on why organic is better. Well, it certainly affects microbial diversity.
- Smithsonian helps to preserve the Great American Garden through citizen science.
- Blimey, it takes 15 years to release a cranberry cultivar. That’s nothing, Kenyan canning bean breeders say.
- Expo Milano 2015 is coming, and Bioversity will be there in force.
- The olive is under threat. Always something.
- If you don’t want to eat insects, you can always feed them to your livestock.
- There’s a campaign to save small cider producers in the UK. which we can all get behind, I’m sure.
- Make your own garum. If you must.
- Asian countries to launch regional PGR network. What, again?
- An ode to figs.
- Gotta love
weedweeds. - FAO gives pastoralists a voice. Or a website, rather.
Brainfood: Spanish sheep, Chicory diversity, Sweetpotato GMO, Wild sweetpotato gaps, Diverse grassland, Sorghum nutrition, Diverse agriculture, Diverse farmland, Medicinal fungus, Colombian olives, Citrus phylogeny
- The biodiversity and genetic structure of Balearic sheep breeds. 5 types, pretty well differentiated among themselves, and very different to the mainland breeds.
- Exploration of genetic diversity within Cichorium endivia and Cichorium intybus with focus on the gene pool of industrial chicory. Species reasonably, though not completely, differentiated. C. intybus division into 3 phenotypic cultivar groups (Witloof, root chicory and leaf chicory) confirmed. Leaf chicory division into 3 phenotypic subgroups confirmed (Radicchio, Sugarloaf and Catalogne cultivars). Modern industrial root cultivars have high phenotypic and genetic variability.
- The genome of cultivated sweet potato contains Agrobacterium T-DNAs with expressed genes: An example of a naturally transgenic food crop. No doubt it will soon be banned in Europe.
- Distributions, ex situ conservation priorities, and genetic resource potential of crop wild relatives of sweetpotato [Ipomoea batatas (L.) Lam., I. series Batatas]. 79% of species identified as high priority for further collecting. None of them GMOs. Yucatan is the place to go to get bang for buck.
- Complementary effects of species and genetic diversity on productivity and stability of sown grasslands. Species diversity increased productivity under drought, regardless of number of genotypes per species present. Genotypic diversity increased temporal stability of production under both drought and non-drought conditions, regardless of number of species.
- Exploiting Nutritional Value of Staple Foods in the World’s Semi-Arid Areas: Risks, Benefits, Challenges and Opportunities of Sorghum. Unbalanced amino acid composition, cyanogenic glycosides and antinutrients are obstacles to increased consumption, but can be overcome by: reduction of worrisome components (or their activity), good practices to minimise contamination and compensation by varied diet.
- Nutritional and Health Implications of Conventional Agriculture — A review. Only agricultural biodiversity can save us.
- Pollination services from field-scale agricultural diversification may be context-dependent. Hedgerows may not always be good for both crop pollination and wild bee conservation.
- Morphological, Physiological and Molecular studies on wildly collected Cordyceps militaris from North West Himalayas, India. You can cultivate it.
- Olive biodiversity in Colombia. A molecular study of local germplasm. 5 of the genotypes could not be identified with known varieties.
- A phylogenetic analysis of 34 chloroplast genomes elucidates the relationships between wild and domestic species within the genus Citrus. 3 main clades: citron/Australian species, pummelo/micrantha and papeda/mandarins. Lots of heteroplasy. 4 genes showing positive selection.