- Perennial Glycine: A new source of genetic diversity for soybean improvement. The perennial wild species are genetically and geographically distant from the crop, but at least one can be crossed, with some difficulty, and some potentially useful genes have been enticed to make their way into the cultivated genome. To no great effect, but it’s early days yet.
- Genetic resources collections of leafy vegetables (lettuce, spinach, chicory, artichoke, asparagus, lamb’s lettuce, rhubarb and rocket salad): composition and gaps. You can just read the collecting priorities for each genepool, or analyze the data yourself.
- Screening the banana biodiversity for drought tolerance: can an in vitro growth model and proteomics be used as a tool to discover tolerant varieties and understand homeostasis? Maybe.
- Development of yield and some photosynthetic characteristics during 82 years of genetic improvement of soybean genotypes in northeast China. Yield doubled, but at the cost of water use efficiency. Maybe those perennials could help?
- An assessment of the genetic integrity of ex situ germplasm collections of three endangered species of Coffea from Madagascar: implications for the management of field germplasm collections. For 3 wild species, there’s lots of genetic diversity in field genebanks, but also lots of crossing with other species.
- Diversity of culturable bacteria and occurrence of phytopathogenic species in bean seeds (Phaseolus vulgaris L.) preserved in a germplasm bank. “…the fact that potentially phytopathogenic bacteria have been preserved in a genebank should emphasize the importance of rigorous sanitary controls for plant genetic resources.” You think?
Urban agriculture gets its 15 minutes
The World Urban Forum is taking place down in my home town this week. That I suppose was what provided at least part of the impetus for the United Nations Standing Committee on Nutrition (UNSCN) to issue a statement on the Nutrition Security of Urban Populations. Not to be outdone, FAO has a publication out too, Growing Greener Cities in Africa, touted as the “first status report on urban and peri-urban horticulture in Africa.” A cursory glance doesn’t reveal much on diversity in these documents, but this is an issue that’s always intrigued me. Could cities act as magnets for crop inter- and intraspecific diversity? After all, they have lots of micro-niches, and have been attracting people from all over for decades, who could have come with their seeds. Is it possible that varieties could still be grown in cities after they’ve disappeared in their native areas? Or at any rate that crop diversity in a city is higher than in the surrounding countryside? Sometime ago we did a small survey of sweet potato diversity in Nairobi roadside verges that seemed to suggest that the menu of varieties was at least somewhat different from what was available in nearby rural areas. Should write that up one day. Anybody know of similar studies?
What I read on my summer holidays
Yeah, summer is over and I’m back at work. Maybe you noticed I haven’t contributed much here in the past month or so. Or maybe you didn’t. Jeremy kept up a steady stream of agrobiodiversity nuggets pretty much all through August. But my lack of activity on the blog doesn’t mean I haven’t tried to keep up, as you would know if you followed us on Facebook, Twitter or Scoop.it. Anyway, for those that don’t, and would like to catch up on my summer reading, here is, in nibble form, what caught my eye during the past month or so:
- “The potato is a religious commodity in America.” Explaining the governance crisis in the US using the humble spud.
- Wait a minute though: “The sizzle seems to be gone from America’s long-term relationship with the potato.” Which apparently means it needs an extreme makeover, colour-wise. For which you’ll need a genebank.
- A tree’s leaves can be genetically different from its roots. Does that mean we have to re-think all molecular phylogenies?
- And speaking of a tree’s leaves, these ones are a thousand years old and give you a buzz.
- A toff with a passion for pigs. P.G. Wodehouse had something to say about this, didn’t he?
- Turns out WFP has a podcast. And ICIMOD has an RSS feed.
- A mathematician factchecks Michael Pollan.
- Pear with me please, while I tell you about another USDA fruit collection.
- 15 Africa-changing innovations include orange-fleshed sweet potatoes. As if they weren’t there before. Anyway, they were THE story for a couple of weeks in August.
- 12 food security innovations include increasing crop diversity. With orange-fleshed sweet potatoes?
- How to put that banana genome to some use.
- Getting the most out of your enumerators.
- IUCN’s Conservation Campus. Any ag? And on a similar topic, training materials in anthropology.
- Automating conservation assessment of plants. You’ll need provenance data from herbaria such as this one at CIP, of course. Oh, and speaking of CIP, they need a phylogeneticist.
- A market opportunity for the mother-in-law?
- Measuring the health of the oceans. Hey, but it’s not all bad for fish.
- Ten species which rely on ex situ conservation. And why that number will go up. How to pay for it all, though?
- Book on the recent history of agricultural research reviewed. I wonder if they looked at the private sector. Because it seems there may be a case to answer.
- Another big grant for taxonomic databases. Ah but this is all going to be community-driven.
- Looks like this Australian genebank could have done with a decent database, community-driven or not.
Brainfood: Lathyrus sativus, Leafy green porridge, iDArTs, Pungency, Earth ovens, Domestication, Recovery, Maize genomics
- Exploring the genetic diversity of Ethiopian grass pea (Lathyrus sativus L.) using EST-SSR markers. They’re variable, especially in Gonder, and future collecting missions need to give “due attention to underrepresented regions”.
- Green leafy porridges: how good are they in controlling glycaemic response?. Pretty good, but the leafy greens may not be what you’re expecting.
- iDArTs: increasing the value of genomic resources at no cost. No cost for genotyping, that is; the analysis probably does cost.
- A versatile PCR marker for pungency in Capsicum spp. Beats having to taste each progeny plant, I suppose.
- Earth Ovens (Píib) in the Maya Lowlands: Ethnobotanical Data Supporting Early Use. The food preparation method is as old as the food itself; 3400-3000 bce.
- Patterns and processes in crop domestication: an historical review and quantitative analysis of 203 global food crops. Terrific, broad survey, worth more of a write-up.
- Changes in Avian and Plant Communities of Aspen Woodlands over 12 Years after Livestock Removal in the Northwestern Great Basin. Removing livestock leads to “recovery of biological integrity”. Because livestock are not integral to anything.
- Historical genomics of North American maize. Fascinating analysis indicates selection based on a limited set of ancestor lines, and “decreased diversity in the ancestry of individual lines”.
Mexican maize biodiversity documented
Via El Cuexcomate, news that CONABIO now has information on the maize races of Mexico on its website, including photos and distribution maps. It’s all part of a huge project to document native maize diversity (including the wild relatives) which was stimulated by fears 1 about the influx of GM maize. And since we’re on the subject of maize, today also saw an informative post on pellagra, complete with very dramatic illustrations.