Readers with a longish memory may remember a somewhat hyperbolic piece about the existential threats to chocolate that we linked to late last year. There was a lot of that sort of talk going around at the time, for some reason. Perhaps a ploy by greedy multinationals to justify price increases? Anyway, there’s a fun video out now, showcasing CATIE’s role in the whole saving chocolate thing.
Dam the genetic resources, full speed ahead
Global Forest Watch now has a dam dataset, covering 50 major river basins. Here’s what it looks like:
You can mash it up online with various forest datasets, but you can also download it as a kml. Which of course means you can mash it up with your own dataset. That’s what I’ve done here with wild rice from Cambodia. The white arrows are dams, most of them either planned or under construction, the yellow dots samples of wild Oryza according to Genesys.
You’ll notice a few dams with few or no nearby specimens. Off the top of my head, those would seem to be places where collecting might be in order, before the disruption goes too far. But what do the rice experts out there think?
LATER: Seems I might be on to something…
@AgroBioDiverse @RiceResearch @BrianFLloyd And not just rice of course. Yes, I would expect a serious consequence.
— Mike Jackson OBE (@mikejackson1948) May 5, 2015
Featured: TR4
Anne Vezina thinks the media is misleading us on TR4:
The general public is being lulled by the media into believing that the disease only affects one variety out of 1,000 or so.
That can’t possibly be true, can it?
Brainfood: Tomato diversity, Tomato characterization, Sweetpotato diversity, Olive characterization, Bamboo as fodder, Chinese liquor, Agroecological livestock, Oasis agrobiodiversity, Pearl millet diversity double
- 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?
Spreading the good genebank news
As I suspected, that “genebanks as morgues” slide that was shown yesterday at the Monogram 2015 meeting at Rothamstead, 1 and was tweeted at the time, was but a rhetorical gambit, a way of framing an argument to the opposite effect. That argument was that thanks to recent advances in genomics and bioinformatics, genebanks are in fact alive and kicking, and more used — and useful — than ever. As indeed is being shown by the subject of the presentation in question, the Seeds of Discovery project at CIMMYT. I’m glad that’s settled.
But it is interesting to ponder the power — and danger — of rhetorical devices, in an era of 140-character textbites. I mean, it’s a perfectly valid strategy in a fifteen-minute presentation to develop the argument that genebanks are being assiduously mined by breeders for all kinds of useful alleles by opening with the admittedly occasionally-voiced accusation that they are nothing but museums — or worse, morgues. I confess I may well have used such a strategy myself, on occasion. It is a potent way of getting the audience’s attention.
But you do need those subsequent fourteen minutes to make the case, and those in your audience who are so inclined may well remember, and repeat, the accusation more readily and forcefully than the clinching counter-argument. Some, indeed, may start to wonder whether genebanks were basically moribund in the past, and have been brought back from the brink by things like high-throughput genotyping and the associated bioinformatics. Gene-jockeys to the rescue! Whereas in fact breeders have been using genebanks since they began, just in different ways, and must have found them useful, or how would they have survivedY No doubt in twenty years’ time, the way we make use of genebanks now will make them look like intensive care wards. And goodness knows how many characters we’ll have at our disposal to talk about it.