- Genome sequencing reveals evidence of adaptive variation in the genus Zea. Alleles associated with flowering time were key to adaptation in highland and temperate regions.
- THP9 enhances seed protein content and nitrogen-use efficiency in maize. And it came from wild teosinte.
- Diverged subpopulations in tropical Urochloa (Brachiaria) forage species indicate a role for facultative apomixis and varying ploidy in their population structure and evolution. Polyploidy plus apomixis equals world domination. Maize next?
- Plastid phylogenomics uncovers multiple species in Medicago truncatula (Fabaceae) germplasm accessions. Genebanks need to go beyond conventional taxonomy sometimes.
- Comparative Analysis of the Genetic Diversity of Chilean Cultivated Potato Based on a Molecular Study of Authentic Herbarium Specimens and Present-Day Gene Bank Accessions. Native Chilean potato landraces are being replaced and polluted…
- Diversity of Late Blight Resistance Genes in the VIR Potato Collection. …and will probably continue to be replaced and polluted.
- The United States Potato Genebank Holding of cv. Desiree is a Somatic Mutant of cv. Urgenta. Shit happens, even in well-run genebanks.
- Domestication and selection footprints in Persian walnuts (Juglans regia). Breeding hasn’t had much of an effect on diversity.
- Comparative phylogenetic analysis of oolong tea (Phoenix Dancong tea) using complete chloroplast genome sequences. Oolong teas are a genetic thing.
- Linking breadfruit cultivar names across the globe connects histories after 230 years of separation. Because of genebanks, botanic gardens, herbaria and three generations of women scientists we now know which breadfruit varieties Captain Bligh introduced to the West Indies.
- Lactuca georgica Grossh. is a wild species belonging to the secondary lettuce gene pool: additional evidence, obtained by KASP genotyping. A wild species gets demoted.
- Large genomic introgression blocks of Phaseolus parvifolius Freytag bean into the common bean enhance the crossability between tepary and common beans. A wild species helps with crossing two cultivated species. Figure out which genepool it belongs to after that.
- Genebanking plant genetic resources in the postgenomic era. Yeah, but all the above leads to the question: “what happens when all crop diversity has been sequenced?” Read this to find out.
Brainfood: Breeding edition
- Climate change may outpace current wheat breeding yield improvements in North America. Breeders need to try harder, at least for spring wheat.
- Large-scale genotyping and phenotyping of a worldwide winter wheat genebank for its use in pre-breeding. But winter wheat could do with some help too, and genebanks are there for you, breeders.
- Exotic alleles contribute to heat tolerance in wheat under field conditions. Maybe wild relatives are the answer?
- Agronomic assessment of two populations of intermediate wheatgrass—Kernza® (Thinopyrum intermedium) in temperate South America. Even really, really wild, and perennial, relatives.
- Sustained productivity and agronomic potential of perennial rice. Maybe perennial wheat breeders can learn from perennial rice breeders.
- CGIAR Barley Breeding Toolbox: A diversity panel to facilitate breeding and genomic research in the developing world. Good to see barley is not being left behind. Perennial barley next, anyone?
- Developing drought-smart, ready-to-grow future crops. It’s not like breeders have no idea about what to do and how to do it…
- Molecular evidence for adaptive evolution of drought tolerance in wild cereals. …and there’s diversity out there in the wild relatives to play with. Even without getting into the weird perennial stuff.
- Impact of CGIAR maize germplasm in Sub-Saharan Africa. So let’s be optimistic, there are success stories. Although, cripes, I’d like to see perennial maize.
- Genomic prediction for the Germplasm Enhancement of Maize project. Which is not to say there’s no room for improvement too.
- Maize plants and the brace roots that support them. Yeah, like for example how many of these fancy CGIAR and GEM maize varieties have brace roots?
- Retrospective study in US commercial sorghum breeding: I. Genetic gain in relation to relative maturity. US breeders have been really successful for sorghum too, though maybe not successful enough.
- Evaluation of a Subset of Ethiopia Sorghum Collection Germplasm from the National Genetic Resources Program of the United States Department of Agriculture for Anthracnose Resistance. And that success may be spilling over to Ethiopia. Well I’d like to think so anyway, or the whole conceit of this Brainfood will go up in smoke.
- Genomics-based assembly of a sorghum bicolor (L.) Moench core collection in the Uganda national genebank as a genetic resource for sustainable sorghum breeding. And maybe Uganda too? Yes, I’m doubling down.
- GridScore: a tool for accurate, cross-platform phenotypic data collection and visualization. All these breeders need to store and manage their data, of course, and here’s a way to do that.
- The Impact of N.I. Vavilov on the Conservation and Use of Plant Genetic Resources in Scandinavia: A Review. Arguably all of the above is the result of the sort of international collaboration that Vavilov exemplified, perhaps even pioneered?
Nibbles: CIAT, AGG, Volcani, Restoration, Food diversity, Deforestation, Berries, Diverse systems
- I’ve been told I need to be more explicit in my Nibbling. So here’s a CCTV video on the Future Seeds genebank in Colombia. You know the one.
- The Australian Grains Genebank (AGG) in Horsham is announcing a new online seed catalogue. The genebank is also on Genesys.
- According to this article, the Israel Plant Gene Bank of the Volcani Center Agricultural Research Organization near Tel Aviv has some pretty cool wheats. I wonder if any of them are also in the AGG. The Volcani genebank is not on Genesys, alas. But some of its material is.
- The Director of Science of the Royal Botanic Gardens, Kew and others say that we need lots more genebanks if we are to do all the ecosystem restoration that needs to be done around the world.
- Short & sweet blog post on the importance of food diversity from the policy officer at the Soil Association. Genebanks not mentioned though, alas.
- Vox has an article on a new European law aimed at preventing the sale of some agricultural commodities grown on recently cleared forest land. I guess the next step would be restoring those ecosystems. If only there were more genebanks…
- Some hero mapped the distribution of all the berries of North America, and made cool videos of the results.
- Report from Wageningen AU on “The need to enhance crop, livestock andaquatic genetic diversity in food systems.” Lots and lots on genebanks.
- So, what did you think? Do you prefer telegraphic, impressionistic Nibbles, or these lengthier, more explicit versions? Let me know in the comments.
Nibbles: INIA, WorldVeg, CIMMYT, NACGRAB, USDA, FSF, RSSSAF, Maxted
- New(ish) website for the Peruvian national genebank.
- WorldVeg genebank reaches out to Southeast Asia.
- CIMMYT genebank reaches out at COP15.
- Nigerian national genebank gets advice.
- USDA’s genebank at the University of Georgia makes it into the local paper.
- Shout-out for community seedbanks in Mexico, or Fondos de Semillas Familiares actually. National genebank unavailable for comment.
- All well and good, but genebanks need a Resilient Seed Systems Shared Action Framework.
- And, of course, they are complementary to in situ/on farm conservation. How exactly does that work? Let Dr Nigel Maxted tell you. For an hour.
Mo’ better agrobiodiversity graphics
Wouldn’t want you to miss out on this nice find from Jeremy’s last Eat This Newsletter of 2022, just because we’re in a new year now. But why not subscribe, eh? Incidentally, since we’re talking about the movement of crops around the world, and fancy graphics, you might as well also check out Bloomberg’s cool re-visualizations of the data in the 2014 paper “Increasing homogeneity in global food supplies and the implications for food security.”
In the decades after 1492 “a massive multidirectional transfer of biota, diseases, technology and humans occurred between Afro-Eurasia and the Americas”. But if you look at the standard maps of these movements, collectively known as the Columbian Exchange, you miss almost all the complexity and context of what moved, where, why, and what else was going on.
That’s the conclusion of a new paper: (Re)Mapping the Columbian Exchange. Suggestions for an Updated Cartography. The paper itself is behind a paywall, although one of the authors is a friend of the podcast so I may well invite him on to discuss the story in more detail. Thankfully, the maps themselves are available to download, and even a superficial glance shows that the story is much more interesting than the standard maps imply.
Each of them overcomes the “overly constrained geographic scope, chronological compression, non-depiction of the contemporaneous movement of important cultural, technological and biological elements of each product, ethnocentrism and the obscuring of human consequences” of the standard map, and I look forward to reading the new plant biographies just as soon as I get hold of the paper.