Threats

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 26, 2012January 26, 2012

Nibbles: AnGR genomic resources, Agroforestry fund, US climate map, Cassava rules

Big new project on farm animal genomics. Gene-jockeys lick lips.
Big new push to raise money for the Moringa Fund. Agroforesters lick lips.
Big new hardiness zone map unleashed by USDA on unsuspecting world. American GIS people and gardeners lick lips.
Bill Gates mentions cassava. CIAT licks lips.

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 17, 2012January 17, 2012

Starving Striga of essential micronutrients

Interesting, and temporally confusing, news item from Wageningen University. Dated 12 January, it tells us that on 11 January Muhammad Jamil will be defending his doctoral research on the very pretty but also very devastating parasitic weed Striga. ¹ And fascinating research it is too.

Striga seeds germinate in response to strigolactones, which are secreted by the host plant’s roots, and which effectively tell the parasite that there is a host nearby. Strigolactones are made from carotenes, which are the precursors of vitamin A, an essential micronutrient for people. Jamil’s research shows that the less carotene a plant produces, the less likely it is to be parasitised by Striga. Jamil also demonstrated considerable differences among rice varieties in the amount of strigalactones they produce under identical conditions.

Which raises lots of lovely questions. Will crops bred for higher levels of carotene — say to improve human nutrition — be more susceptible to Striga parasitism? Is the solution to breed those self-same crops to block the production of strigalactones? Could this be a job for life for high-tech plant breeders? And what’s wrong with the push-pull approach to controlling Striga? Does it, for example, not work on rice?

I do hope Muhammad is now Dr Jamil.

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 ²
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. ³
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?