Genetic diversity

February 2, 2012February 2, 2012

How to react to emergencies

From early 2000, various agencies and individuals involved in livestock relief work began to question the quality and professionalism of their interventions.

Wow, thanks for sharing. Anyway, out of that crisis of self-esteem was LEGS born, the Livestock Emergency Guidelines and Standards. It’s not immediately clear to me after a brief browse of the website to what extent agrobiodiversity considerations come into these standards and guidelines, but I’ll explore some more and get back to you. Anyone out there aware of a similarly formalized initiative for seeds? It’s not as if guidelines for seed interventions are not needed. But they may be there already for all I know, embedded in the WFP and FAO seed relief playbooks.

LATER: And indeed they are. Good to know. Thanks to Tom Osborn from FAO.

January 30, 2012February 8, 2012

Brainfood: Tea, NGS, Grandmothers, Anti-scorbutics, Barley population structure, Climate change below ground, Rice

Genetic structure and diversity of India hybrid tea. It’s complicated. It’s important because the success of tea outside its core are is due to hybridization between Indian and Chinese types in Assam starting in 1875. It’s limited.
NGS technologies for analyzing germplasm diversity in genebanks. That’s Next-Generation Sequencing. Can be used to “identify patterns of genetic diversity, map quantitative traits and mine novel alleles.” Recommendation is for “genotyping by sequencing” to be applied stepwise, starting with a core collection. That’ll be complicated, but the real bottleneck will be the phenotyping.
The role and influence of grandmothers on child nutrition: culturally designated advisors and caregivers. Wise up, nutrition advocates. You are, apparently, ignoring egg-suckers, a primary force for good.
The importance of eating local: slaughter and scurvy in Antarctic cuisine. Who needs oranges when you have fresh penguin at hand?
Islands and streams: clusters and gene flow in wild barley populations from the Levant. There is ecogeographic patterning in the wild material, once you remove the effect of recent admixture with cultivated barley. Geneflow is more N to S than vice versa.
Global change belowground: impacts of elevated CO2, nitrogen, and summer drought on soil food webs and biodiversity. It’s complex, really complex; increased CO2 and N may result in new, simpler belowground assemblages.
Rice and Language Across Asia: Crops, Movement, and Social Change. An entire issue of Rice journal.

January 27, 2012January 27, 2012

Any crops, or crop wild relatives, in the eastern Andes?

Well, of course there are. I mean, there must be. But we can’t be sure, at least not as far as this paper in BMC ecology is concerned. The abstract of Plant and animal endemism in the eastern Andean slope: Challenges to conservation tells us that “The Andes-Amazon basin of Peru and Bolivia is one of the most data-poor, biologically rich, and rapidly changing areas of the world” and goes on to say that the scientists “mapped ecological systems, endemic species concentrations, and irreplaceable areas with respect to national level protected areas”. It concludes:

We found that many endemic species and ecological systems are lacking national-level protection; a third of endemic species have distributions completely outside of national protected areas. Protected areas cover only 20% of areas of high endemism and 20% of irreplaceable areas. Almost 40% of the 91 ecological systems are in serious need of protection (=< 2% of their ranges protected).

Are any of the plants they studied wild relatives of crops? How about actual crops? Anyone able to comment?

January 25, 2012January 25, 2012

Nibbles: Canis then and now, Training roundup, Soybean genome, Top 10 viruses, PNG drought, Food archaeology, Sturgeon Bay, Moringa

Dogs were first domesticated animal. But the love affair is cooling off, at least for some breeds.
Building capacity for animal genetic resources use, and for conservation and sustainable use under the ITPGRFA. And tree domestication. Is someone keeping track?
BGI continues to take over DNA world.
And the Worst Plant Virus Oscar goes to…
How PNG farmers cope with drought. From what is developing into a really useful blog.
I wish I had time to read 200 pages on ancient Athenian food. But maybe you do?
Learn about the USDA potato collection, including lots of wild relatives.
The tree that thinks it’s a supermarket: Moringa in the limelight again.

January 16, 2012January 16, 2012

Brainfood: Conservation policy, Grasspea breeding, Modeling rice diseases, Maize roots, Literature on new oil crops, Native vs non-native trees in Indonesian city parks, Cherimoya maps, Darwin Core, Seed dispersal and conservation, Oxalis variation, Polyploidy and variation, Pollinators, Microsymbionts, Plant migration, Culture and agriculture

As ever, we have added most of these references to our public group on Mendeley, for ease of finding. “Most?” we hear you say. “What gives?” Well, Mendeley and some academic publishers still don’t play nicely. There’s nothing to stop you adding the paper in question by hand, if you’re so inclined, but we don’t really have the time. And if you do, please do it right.

Why are some biodiversity policies implemented and others ignored? Lessons from the uptake of the Global Strategy for Plant Conservation by botanic gardens. Because there are no feedback mechanisms?
Genetic improvement of grass pea (Lathyrus sativus) in Ethiopia: an unfulfilled promise. Conventional breeding for low ODAP hasn’t worked, so forget about solving that problem through conventional breeding, and move on to other problems, or use genetic transformation.
Modeling and mapping potential epidemics of rice diseases globally. It is not particularly well done, but one is surprised to see it done at all. NiM ((Not in Mendeley.))
Morphological and physiological characteristics of corn (Zea mays L.) roots from cultivars with different yield potentials. More roots means more yield. Among some modern varieties anyway. Under some conditions. NiM
Trends in literature on new oilseed crops and related species: Seeking evidence of increasing or waning interest. And finding it, alas. Sort of. NiM
The green colonial heritage: Woody plants in parks of Bandung, Indonesia. Native species used to be used more, and should be used more again. NiM
Mapping Genetic Diversity of Cherimoya (Annona cherimola Mill.): Application of Spatial Analysis for Conservation and Use of Plant Genetic Resources. Cool maps of microsat hotspots.
Darwin Core: An Evolving Community-Developed Biodiversity Data Standard. The way out of Genebank Database Hell? Well, maybe the match that will light the torch that will show the way out.
Seed dispersal in changing landscapes. Fragmentation, harvesting, invasions and climate change affect seed dispersal in ways that need to be understood by conservationists. NiM. And the BBC’s more verbose take on it.
Distribution models and a dated phylogeny for Chilean Oxalis species reveal occupation of new habitats by different lineages, not rapid adaptive radiation. Title says it all, really. It’s not that a single lineage exploded as new habitats became available. Old lineages were pre-adapted to the new habitats. ((Finding the actual paper online could be really, really hard.))
Extensive chromosomal variation in a recently formed natural allopolyploid species, Tragopogon miscellus (Asteraceae). Polyploidy leads to all hell breaking lose in the genome for generations.
Overplaying the role of honey bees as pollinators: A comment on Aebi and Neumann (2011). It’s the wild bees, hoverflies and other native pollinators, stupid! But still.
Arbuscular Mycorrhizas Reduce Nitrogen Loss via Leaching. 40 times less, no less.
Distributional migrations, expansions, and contractions of tropical plant species as revealed in dated herbarium records. Eppur si muovono. And more on the paper. And more on herbarium digitization in general. what can I tell you, I’ve got apophenia.
Ecological and socio-cultural factors influencing in situ conservation of crop diversity by traditional Andean households in Peru. There are influences; and why wouldn’t there be?