- Could teff or millets topple wheat, maize and rice? Anyone for unintended consequences?
- Not if superior models lead to bigger wheat harvests. ’Cos that’s all it takes.
- That and a good book: Yield Gains in Major U.S. Field Crops.
- Did somebody mention models? Vorarlberger Bergkäse is a model cheese, and “The rind is the boundary layer between a cheese and its environment”. Welcome to the cheese microbiome.
- What’s the difference between a wine grape and a table grape? Simple: Pectic-{beta}(1,4)-galactan, extensin and arabinogalactan-protein epitopes.
- Bee biodiversity results in mo’ bigger blueberries. Now to make use of that.
- Seed policy wonks – you know who you are – will thrill to IFPRI’s new report: The seed industry in Pakistan.
- So how does that square with the Financial Express of Bangladesh’s discovery that “Agro biodiversity can improve nutrition and health”?
- How to make baobab juice. Time to edit those factsheets.
Nibbles: City farming, Yeast diversity, Fungal taxonomy, Ankole cattle, Fruit breeding, Goat improvement, Private hunger, Vietnam cacao, Sequencing life, Old vegetables, Cola politics, Lugar Center, Wither biofuels, Plant breeder award, Amateur potato breeding
- “Fifteen to twenty percent of the world’s food is produced through urban farming, involving an estimated 800 million people.”
- We shaped yeasts as much as they shaped us. Now to sort out their nomenclature, along with the rest of the benighted fungal kingdom.
- Cheese is just one way yeasts shaped us. What kind of cheese can you make from Ankole milk, I wonder.
- Sean Myles tells us how his lab “makes food better.”
- Tan Sonstegard of USDA tells us how ADAPTMap can make goats better. Skip to 2 mins in, if you want to avoid adorable footage of cute (human) kids. I love a nice bit of goat cheese.
- Can the private sector help combat hunger and malnutrition? Gee, I dunno, do tell me.
- Vietnamese chocolate comes of age. Someone mention the private sector?
- Gene jockeys take over world. World surrenders.
- What did the Elizabethans ever do for us? Well, they grew funky vegetables for one thing.
- Both Colas sign up to FAO guidelines that “protect the rights of poor and vulnerable people to land, livelihoods and food security.” But is it all marketing?
- The Lugar Center has a bunch of bibliographic resources for researchers.
- Biofuels? Bah, humbug.
- Jorge Dubcovsky, a professor of plant sciences at the University of California–Davis, snags another award.
- “Are you all converts to the cause of backyard potato breeding?” Do tell. And so we come full circle.
Nibbles: Rural income sources, Medicinal trees, Saffron, Biofuel trees, Trout genome, Maize & drugs in Mexico, Bee-keeping, Urban ag, Food security, Jackfruit, SDG2015
- Natural areas just as important for rural incomes as crops.
- Because of things like medicinal plants, among others.
- Not if the crop was saffron, though. Or multi-purpose biofuels?
- Trout gets the genome treatment. I prefer it grilled with a little butter and parsley.
- High maize prices good for one thing. Wanna guess?
- Guerrilla bee-keepers in the Rust Belt.
- Maybe they’ll be discussed in tomorrow’s tweetathon: Urban Food Security +SocialGood.
- Brussels sprouts too, maybe: it’s urban agriculture, Jim, but not as we know it.
- Another view on NatGeo’s five steps to food security. (Here’s Luigi’s.)
- The key thing NatGeo left out: jackfruit.
- Well, that, and multi-stakeholder partnerships. Of course.
Nibbles: Tomato colour, INBio demise, Specimens, Plant lore, Ancient chickens, Edible flowers, Urban veg, Trees & nutrition
- Deconstructing the colour of tomatoes. h/t @kctomato
- INBio folds? Or (h/t Jacob) government takes responsibility?
- Discussion on whether natural history specimens are necessary.
- So there’s a place where you can record your plant lore. No word on whether that’s linked to specimens.
- Yellow skin in chickens is a recent trait. Specimens involved. Part of that PNAS special feature on domestication.
- What have bees ever done for us?
- Edible flowers not just for pansies.
- Australia funds World Veg to research urban veg in Africa.
- Remember how we included in Brainfood a few months back a paper linking tree cover with dietary diversity and fruit/veg consumption in Africa? Well, here’s the PowerPoint.
A one-step approach to clarify the origin of crop species
We asked Dr Dan Brock to break down his paper on the domestication of Jerusalem Artichoke. Thanks, Dan. Sandy Knapp has also had her say on this. Who needs the full text of papers these days.
Identifying the wild progenitors of crops is one of the key steps we have to take if we are to effectively harness the diversity maintained in the world’s genebanks. This information can and should be used to fuel efforts to increase the productivity and sustainability of modern agriculture. In the case of allopolyploid crop species, which are formed by a combination of interspecific hybridization and genome duplication, this information is also of technical significance. In these systems, a major obstacle in the way of genome-scale surveys of genetic diversity is the fact that variation occurring between the progenitor-derived sets of chromosomes cannot be discerned from variation occurring within each chromosome set. In a recent publication in the journal New Phytologist ((Bock DG, Kane NC, Ebert DP, & Rieseberg LH (2014). Genome skimming reveals the origin of the Jerusalem Artichoke tuber crop species: neither from Jerusalem nor an artichoke. The New phytologist, 201 (3), 1021-30 PMID: 24245977)) we highlight a one-step approach that can be used to clarify the origins of previously intractable polyploid complexes, using Jerusalem Artichoke as an example.
The Jerusalem Artichoke (Helianthus tuberosus) is a culturally and economically important tuber-producing hexaploid whose origin has long fascinated botanists. Despite prolonged interest, the evolutionary history of this species has, until recently, remained a mystery. Different hypotheses have so far proposed the annual sunflower H. annuus as well as numerous other congeners as its likely progenitors. We tested these competing scenarios using the genome skimming approach. ((Also called “shallow sequencing,” referring to the number of times a nucleotide is read during the process.)) One lane of Illumina sequencing generated sufficient data to reconstruct complete plastid genomes, partial mitochondrial genomes, as well as partial 35S and 5S nuclear-encoded ribosomal DNA for the Jerusalem Artichoke and its candidate progenitors. Analyses performed using these data provided unprecedented resolution for this group, which is notoriously difficult to resolve using phylogenetic inference. Our results showed that the Jerusalem Artichoke originated repeatedly via hybridization between the Hairy Sunflower (H. hirsutus), which likely served as the maternal parent, and the Sawtooth Sunflower (H. grosseserratus), which likely served as the paternal parent.
The advent of new sequencing technologies has made ever-increasing portions of the genome available for investigation, with ever-decreasing investment in researcher time and effort. We are therefore in an ideal position: we can use these breakthroughs to resolve the origins of crops like the Jerusalem Artichoke whose unclear ancestry has, until now, hampered evolutionarily-informed germplasm preservation and genome-enabled progress.