Domestication

June 26, 2019September 12, 2019

The past and future of the Silk Road

An interview with Robert N. Spengler III, author of Fruit from the Sands: The Silk Road Origins of the Foods We Eat ¹ reminds me that there have been a couple of interesting papers about that part of the world recently that I was meaning to blog about.

The domesticated apple originated half way along the Silk Road, and spread in both directions, changing most drastically in Europe due to intensive introgression from the crabapple. And more.
In contrast, citrus fruits originated in SE Asia, and spread westward, Citrus medica (citron) reaching the Mediterranean first, and C. limon (lemon) second, both in antiquity.
There were northern and southern routes of crop movement through central Asia, plus a maritime route.

Given the importance of the Silk Road in the domestication and the spread of crops, it is perhaps worth asking if the Belt and Road Initiative could be an opportunity for significant conservation actions. WWF has done a preliminary environmental impact assessment, but not focusing particularly on agricultural biodiversity.

June 25, 2019June 25, 2019

Nibbles: Organic Greek, Mexican maize heirloom, Community seedbank, Arizona chilli, African maize, Chinese trifecta, Sex-changing solanum, Breeding oddities, Breeding costing tool, Chicken project, WFP, Cattle book, Agroforestry database, Minor cereals, Reviewing genebanks, Wheat breeding, Rice seeds

Greek organic farm resists.
Communities getting into seed banking all over.
Saving zapalote chico.
Would you like chiltepines with that?
No zapalote chico in South Africa, but lots of other maize.
Conserving agricultural biodiversity in China.
Including in Hainan.
At the same time, China restricts foreign access to human genome data.
Sexually plastic Australian wild tomato named at long last.
Breeding flavour crops.
And figuring out how much it will cost.
Interesting project on human-chicken interactions.
Veggie breeder wins World Food Prize.
New coffee table book on cattle in Africa.
Flagship agroforestry database gets new version. Anyone wanna test it for us?
Minor cereals in Europe are anything but minor.
And lots are conserved in Europe’s increasingly scrutinized genebanks.
Meanwhile, a major cereals keeps getting the attention it also needs.
“The candidate markers could be used by any rice genebank to potentially identify varieties with seeds that are particularly short- or long-lived in storage. Viability monitoring intervals could then be customized by variety.” And wheat?

June 24, 2019November 15, 2021

The pink banana of Peru

From the latest issue of Jeremy’s newsletter:

The standard story of the banana’s domestication and spread is that it started in southeast Asia, popped across to Africa and then went to the Caribbean and the tropical zones of the Americas. Peru’s best kept banana secret looks into a very special group of bananas called Iholena cultivars. That’s their Hawaiian name, and a clue to the reverse journey they made, east across the Pacific. The taste of these varieties reflects “a rich and lingering semi-sweetness piqued with a lemony tang”. That may be one reason people in Peru like them. Another is that they are very nutritious; the pink-orange pulp is high in vitamin A precursors. ProMusa advises waiting until the skin is black before eating one of these bananas, should you be so lucky, because the peel turns yellow before the fruit is ripe.

There’s more where that came from.

June 24, 2019June 24, 2019

Brainfood: Macadamia domestication, Middle Eastern wheat, ART virus, Open science, Red Queen, Food system change, Chinese Neolithic booze, Dough rings, Making maps, Biofortification, Endophytes, African maize, Switchgrass diversity, Ancestral legume

Wild Origins of Macadamia Domestication Identified Through Intraspecific Chloroplast Genome Sequencing. One tree is the basis of the industry.
The Israeli Palestinian wheat landraces collection: restoration and characterization of lost genetic diversity. Bringing it all back home.
Using high‐throughput sequencing in support of a plant health outbreak reveals novel viruses in Ullucus tuberosus (Basellaceae). There’s always something…
Plant health emergencies demand open science: Tackling a cereal killer on the run. …but openness will get us through it.
Rapid evolution in plant–microbe interactions – a molecular genomics perspective. Until the next one.
Understanding food systems drivers: A critical review of the literature. Spoiler alert: urbanization, raise in consumer income, population growth, attention paid to diet & health issues, technological innovations, intensification and homogenization of the agricultural sector, increase in frequency and intensity of extreme events, general degradation in soils and agro-ecological conditions, improved access to infrastructure and information, trade policies and other processes influencing trade expansion, internationalization of private investments, concerns for food safety. I guess diversity is in there somewhere.
The origins of specialized pottery and diverse alcohol fermentation techniques in Early Neolithic China. So good, they invented fermentation twice.
The Hoard of the Rings. “Odd” annular bread-like objects as a case study for cereal-product diversity at the Late Bronze Age hillfort site of Stillfried (Lower Austria). Unbaked, tarallini-like dried wheat/barley dough rings may have been used ritualistically. No, not like that.
EviAtlas: a tool for visualising evidence synthesis databases. Everybody likes a map.
Editorial: Improving the Nutritional Content and Quality of Crops: Promises, Achievements, and Future Challenges. A review of reviews of biofortification, and more.
Fungal endophyte diversity from tropical forage grass Brachiaria. 38 fungi isolated from 9 Brachiaria species, but unclear if any are beneficial.
Characteristics of maize cultivars in Africa: How modern are they and how many do smallholder farmers grow? Out of 500 samples in 13 countries, about half were in some way improved, covering about half of the surveyed planted area.
QTL × environment interactions underlie adaptive divergence in switchgrass across a large latitudinal gradient. You can combine alleles which are locally advantageous in different places to get a
super-biofuel.
Reconstruction of ancestral genome reveals chromosome evolution history for selected legume species. The wild ancestor of peanut, pigeonpea, soybean, beans, mungbean, chickpea, lotus and medics was closest to wild peanuts. Maybe they can synthesize it?

June 17, 2019June 25, 2019

Brainfood: Seed viability double, Forest reserves, Biodiversity value, Hunter-gatherers, Seed concentration, Past CC, Hot lablab, Mungbean adoption, Climate smart impacts, Tree threats, Chicken domestication, Top sorghum, Ancient wines, Plant extinctions

Variation in seed longevity among diverse Indica rice varieties. 8 major loci associated with seed longevity.
Seeds and the Art of Genome Maintenance. Viability is about the DNA repair response. Snap.
Are Mayan community forest reserves effective in fulfilling people’s needs and preserving tree species? Sure they are.
The power of argument. People don’t respond to utilitarian arguments when it comes to biodiversity. In the Netherlands.
Do modern hunter-gatherers live in marginal habitats? Nope. What can I tell ya?
New evidence on concentration in seed markets. Not as bad as some people think.
Climate change has likely already affected global food production. From 2003 to 2008, there’s been a ~1% average reduction in consumable food calories in barley, cassava, maize, oil palm, rapeseed, rice, sorghum, soybean, sugarcane and wheat.
Selection of Heat Tolerant Lablab. 6 out of 44 accessions from the WorldVeg genebank are heat tolerant. Seems a lot.
Counting the beans: quantifying the adoption of improved mungbean varieties in South Asia and Myanmar. 1.2 million farmers reached by WorldVeg varieties. Lablab next?
Climate smart agricultural practices and gender differentiated nutrition outcome: An empirical evidence from Ethiopia. They work, but they’re better in combination.
Pests and diseases of trees in Africa: A growing continental emergency. Into Africa…
Genetics of adaptation in modern chicken. Not much of a domestication bottleneck; that came later.
Multi-Trait Diverse Germplasm Sources from Mini Core Collection for Sorghum Improvement. From 40,000 in the genebank, to 242 in the mini-core, to 6 really cool ones (from Yemen, USA, China, Mozambique, and India x2 if you must know).
Palaeogenomic insights into the origins of French grapevine diversity. Ancient DNA from 28 pips dating back to the Iron Age provides pretty good matches to grapes grown today.
Global dataset shows geography and life form predict modern plant extinction and rediscovery. Almost 600 plants went extinct in modern times, at least, and I count about 20 crop wild relatives among them.