- Genetic Cryopreservation of Rare Breeds of Domesticated North American Livestock: Smithsonian & SVF Biodiversity Preservation Project. 106,109 “units of germplasm” from 39 breeds.
- Interspecific hybridization facilitates niche adaptation in beer yeast. Chimerization is not a word I thought I would ever see in a beer context. Anyway, thank goodness for feral yeasts and their propensity for miscegenation.
- Predicted climate shifts within terrestrial protected areas worldwide. PAs in temperate and northern high-latitude will have high area proportions of novel climate conditions by the end of the century.
- Crop Genomics Goes Beyond a Single Reference Genome. Looks like we’ll always need another genome.
- Morphometric approaches to promote the use of exotic germplasm for improved food security and resilience to climate change: A kura clover example. Fancy maths used to describe the hell out of a small collection of an underused clover.
- Global distribution of earthworm diversity. Peaks at higher latitudes, but higher overall in the tropics.
- Natural genetic variation in photosynthesis: an untapped resource to increase crop yield potential? Sounds like it.
- Increasing Photosynthesis: Unlikely Solution For World Food Problem. Ok, maybe not.
- What role should randomized control trials play in providing the evidence base for conservation? A bigger role that currently, but watch out.
- Brown Rice, a Diet Rich in Health Promoting Properties. Mill less.
- Loss of diversity and accumulation of genetic load in doubled-haploid lines from European maize landrace. DH not a panacea.
- Maize agro-food systems to ensure food and nutrition security in reference to the Sustainable Development Goals.
- Using phenotypic distribution models to predict livestock performance. Niche models + performance.
Nibbles: Pepper picking, Ancient goats, Ipomoea, Manuka honey, Language conservation, USDA sorghum
- Breeding chillis for mechanization.
- Long, but very engaging, video on zooarchaeology in general and goat bones in particular.
- Delving into the origins of the sweetpotato at CIP.
- Cultivating Leptospermum scoparium for honey.
- Saving languages.
- Jasmonic acid is bad for sorghum yields.
The sweetest things
There’s been a lot of action on the cucurbit domestication front lately. Hot on the heels of a comprehensive Tansley review of all the crops in the family in New Phytologist 1 now come two papers out of the Chinese Academy of Agricultural Sciences focusing on the melon and watermelon:
- Zhao, G., Lian, Q., Zhang, Z. et al. A comprehensive genome variation map of melon identifies multiple domestication events and loci influencing agronomic traits. Nat Genet 51, 1607–1615 (2019) doi:10.1038/s41588-019-0522-8.
- Guo, S., Zhao, S., Sun, H. et al. Resequencing of 414 cultivated and wild watermelon accessions identifies selection for fruit quality traits. Nat Genet 51, 1616–1623 (2019) doi:10.1038/s41588-019-0518-4.
There are press releases on each of these, of course. But the more interesting take is provided by some IPK researchers 2, who mash up the two studies. 3 And provide a nice graphic to summarize the whole thing.
The bottom line(s)? The two different subspecies of melon acquired sweet flesh through different mutations, independently but probably both in India; there was a third domestication event in Africa, but the authors had too little material at hand to say much about this. Melon and watermelon lost their bitterness through convergent evolution, and the latter has benefitted from introgression from two wild relatives, one of which was separately domesticated for its seeds.
Nibbles: Root & tuber breeding, Potato fun, Melon domestication, Maize conservation, Millet diversification, Business as usual
- A backyard breeder evaluates USDA’s potato accessions. Among other things.
- The Onion roasts potatoes.
- How melons got sweet.
- Mexican Senate considers in situ/on farm conservation areas for maize.
- Millets for climate change resilience in India.
- Business for biodiversity. Yeah, right.
Brainfood: Ecosystem services, Farmer Variety protection, Pineapple genome, Almond genome, Date palm genome, Sesame diversity, Frangmentation double, Alternative beans, AI & farmers, De-domestication
- Global modeling of nature’s contributions to people. Declining where the need is greatest. And that’s not even taking CWR into account.
- Farmer’s Varieties in India – Factors affecting their preferential prevalence and the current status of their legal protection. Open-pollinated crops are missing out.
- The bracteatus pineapple genome and domestication of clonally propagated crops. Domestication and early improvement as the result of a single clonal propagation event.
- Transposons played a major role in the diversification between the closely related almond and peach genomes: Results from the almond genome sequence. Including the sweet kernel phenotype.
- Genome-wide association mapping of date palm fruit traits. Fruit color and sugar composition changed in parallel.
- Genetic diversity and population structure of the Mediterranean sesame core collection with use of genome-wide SNPs developed by double digest RAD-Seq. Three genetic groups, but not geographically based.
- Ongoing accumulation of plant diversity through habitat connectivity in an 18-year experiment. You need those corridors.
- Meta‐analysis of the differential effects of habitat fragmentation and degradation on plant genetic diversity. You really do.
- In search of alternative proteins: unlocking the potential of underutilized tropical legumes. Beyond soybeans. I always liked Bambara groundnut.
- A scalable scheme to implement data-driven agriculture for small-scale farmers. Fancy maths put to some good use in Colombia. But what if it tells you to grow more coca?
- The evolution of crops that do not need us anymore. They’re called weeds.