- The genomic signature of wild-to-crop introgression during the domestication of scarlet runner bean (Phaseolus coccineus L.). The wild Mexican genepool is helping to counteract the effects of the domestication bottleneck.
- Genetic variation in wild and cultivated Arabica coffee (Coffea arabica L.): Evolutionary origin, global distribution, and its effect on fungal disease incidence in Southwest Ethiopia. Domesticated disease-resistant cultivars are threatening the genetic integrity of the wild genepool. You win some, you lose some.
- Uncovering haplotype diversity in cultivated Mexican vanilla species. Plenty of evidence of past hybridization events in cultivated vanilla in Mexico. Maybe it can swap stories with scarlet runner bean.
- Six-rowed wild-growing barleys are hybrids of diverse origins. In the case of barley, the wild-cultivated hybrids even got a separate Latin binomial.
- Portrait of a genus: genome sequencing reveals evidence of adaptive variation in Zea. Lots of variation in interesting adaptive traits in the wild relatives of maize. Did they, or will they, make their way into the crop, I wonder?
- An adaptive teosinte mexicana introgression modulates phosphatidylcholine levels and is associated with maize flowering time. This one did.
- A highly conserved core bacterial microbiota with nitrogen-fixation capacity inhabits the xylem sap in maize plants. Its wild relatives are not the only wild organisms maize benefits from.
- Phenomic data-facilitated rust and senescence prediction in maize using machine learning algorithms. Drones and fancy maths can be used to predict and document southern rust infection in maize. Maybe in wild relatives too one day, who knows.
- A Solanum lycopersicoides reference genome facilitates insights into tomato specialized metabolism and immunity. A tomato wild relative has a gene for resistance to bacterial speck disease, so of course they had to sequence its genome.
- Genetic gains in potato breeding as measured by field testing of cultivars released during the last 200 years in the Nordic Region of Europe. Genetic gains for yield (measured in non-target environments) were not that great and contributed about half of productivity gains. Results for other traits were even worse, mainly because of stringent market demands. So no chance of using wild relatives I suppose.
- Genotypic Response and Selection of Potato Germplasm Under Heat Stress. Not so fast…
- Dataset of historic and modern bread and durum wheat cultivar performance under conventional and reduced tillage with full and reduced irrigation. I wonder to what extent wild relatives contributed to the differences.
- Assessing returns to research investments in rice varietal development: Evidence from the Philippines and Bangladesh. Net returns from collaboration in rice breeding between IRRI and national partners are still strong in the Philippines and Bangladesh, but declining, and faster in the former than the latter. Plenty of genes from wild relatives in IRRI lines of course. Maybe there could be more?
Documenting agricultural biodiversity everywhere
Nice to see a couple of examples of agrobiodiversity catalogues, albeit of very different kinds, available online.
The Catàleg de varietats locals de Catalunya (from that autonomous community of Spain’s Department d’Acció Climàtita, Alimentació i Agenda Rural) can be searched online by either cultivated species (hint: “mongueta” is Phaseolus vulgaris) or the “entitat” that is managing the landrace.
On the other hand, the Field Guide to the Cultivated Plants of the Philippines (Volume 1: Commonly cultivated species) from the Southeast Asian Regional Center for Graduate Study and Research in Agriculture (SEARCA) can be downloaded as a beautifully produced PDF.
And since I’m here, I might as well point to a nice infographic summarizing the cultivated Citrus family tree. I may have shared this (or something similar) before, but I’m hoping that if I keep doing so some of the details will eventually stick in my brain.
Brainfood: Rice domestication, Roman wine, Dog domestication, Earth ovens, Forest orchards, Saffron origins
- The Fits and Starts of Indian Rice Domestication: How the Movement of Rice Across Northwest India Impacted Domestication Pathways and Agricultural Stories. While cultivation of (indica) rice in South Asia began in the Ganges around 6500 BC, its domestication really speeded up 3000 years later in the Indus.
- Archaeobotanical and chemical investigations on wine amphorae from San Felice Circeo (Italy) shed light on grape beverages at the Roman time. In the second century BC the ancient Romans may have traded a medicinal wine made from wild or semi-domesticated grapevines. I wonder how it would have gone with a nice risotto.
- Grey wolf genomic history reveals a dual ancestry of dogs. Either dogs were domesticated independently in E and W Eurasia and then the two lineages merged, or they were domesticated in the E and then there was geneflow from wild dogs. Sounds a bit like rice actually. ((No, really, check it out. Japonica gets domesticated in one place, then taken to another place where it gets into geneflow with indica, which is being domesticated elsewhere. Only difference is that 2 different wild species are involved, rather than just a single wild wolf species. Also maybe echoes of what happened in tomato too?))
- Bulbs and Biographies, Pine Nuts and Palimpsests: Exploring Plant Diversity and Earth Oven Reuse at a Late Period Plateau Site. For 2000 years Native Americans returned to specific food processing sites dug into the soil to cook up a storm. No word on the use of wild grapevines.
- Coupled archaeological and ecological analyses reveal ancient cultivation and land use in Nuchatlaht (Nuu-chah-nulth) territories, Pacific Northwest. Native Americans nurtured forest gardens to enrich them with edible species. Including wild apples though again not wild grapevines apparently.
- Ancient Artworks and Crocus Genetics Both Support Saffron’s Origin in Early Greece. Ok now everything is in place for a nice risotto alla Milanese with a Falanghina at the House of the Tragic Poet.
Brainfood: Red rice beer, Chicken domestication, Perennial rice, Biofortified rice, Ancient wheats, Brassica domestication, Potato domestication, Sunflower domestication, Early agriculture
- The quest for red rice beer: transregional interactions and development of competitive feasting in Neolithic China. In the 4th millennium BCE, in China, people brewed a sacred red beer in vats called dakougang using rice, millet, Job’s tears, wheat and snake gourd root.
- The biocultural origins and dispersal of domestic chickens. The earliest domesticated chickens are found 1650-1250 BCE in central Thailand and were attracted by stored rice and millet. No word on the role of beer.
- Performance, Economics and Potential Impact of Perennial Rice PR23 Relative to Annual Rice Cultivars at Multiple Locations in Yunnan Province of China. But does it make decent beer and attract chickens?
- Genomic prediction of zinc-biofortification potential in rice gene bank accessions. Check out in particular the aus subspecies. No word on whether the resulting beer and chickens are also high in zinc.
- Do ancient wheats contain less gluten than modern bread wheat, in favour of better health? More to the point, do they make better beer?
- Evidence for two domestication lineages supporting a middle-eastern origin for Brassica oleracea crops from diversified kale populations. Chickens not involved at all.
- Genome evolution and diversity of wild and cultivated potatoes. Propagation by tubers had a big effect on the cultivated potato genome compared to propagation by seed. And no, I’m not going to get into the whole chickens-in-South-America controversy right now, but you can google it.
- The genomics of linkage drag in sunflower. Introgression from wild relatives has been good for some things, bad for others, but in general pre-breeders should stick to the primary genepool. And watch out for chickens.
- From horticulture to agriculture: New data on farming practices in Late Chalcolithic western Anatolia. While domestic units were small and agriculture extensive, cooperation was widespread and inequality low. Then those Bronze Age elites got chickens…
Brainfood: First farmers, First dogs, First olives, Food sharing, Seed longevity, Seed germination, Conservation & climate change, Urban gardens, Seed movement, Machine learning, Web crawling, Imaging spectroscopy
- Ancient DNA maps ‘dawn of farming’. Hunter-gatherers from Europe and the Middle East mixed and settled down as farmers in Anatolia, then spread to Europe.
- The Australian dingo is an early offshoot of modern breed dogs. The dingo originated from grey wolves, and found itself isolated, much earlier than all other dog breeds.
- The first use of olives in Africa around 100,000 years ago. Hunter-gatherers used the wild olive long before they domesticated either it or the dog.
- Intestinal parasites in the Neolithic population who built Stonehenge (Durrington Walls, 2500 BCE). Neolithic people and their dogs ate the same things.
- Comparative seed longevity under genebank storage and artificial ageing: a case study in heteromorphic wheat wild relatives. Seeds of the same crop wild relatives species but with different shapes have different seed longevities.
- Stepping up to the thermogradient plate: a data framework for predicting seed germination under climate change. But do heteromorphic seeds have different germination requirements too? Here’s how to find out.
- Conservation interventions can benefit species impacted by climate change. Biodiversity was helped with the effects of climate change in 30% of cases, especially if interventions were targeted on specific species. Genebanks available for comment.
- Urban conservation gardening in the decade of restoration. Speaking of interventions…
- South and/or north: an indigenous seed movement in South Korea and the multiple bases of food sovereignty. Wait, what about the genebank though?
- Perspectives in machine learning for wildlife conservation. Surely if you can use fancy tech and maths to monitor cheetahs, monitoring crop wild relative populations and landraces should be a doddle.
- Quantifying an online wildlife trade using a web crawler. Surely if you can crawl the web for evidence of illicit wildlife trade, crawling it to evidence of genetic erosion of crop diversity should be a doddle.
- Plant beta-diversity across biomes captured by imaging spectroscopy. How about capturing beta-diversity within crop fields, though? A doddle, no? We’ve come a long way since those first Anatolian farmers and their dingoes.