- Genome-wide comparative diversity uncovers population structure, global distribution, and targets of selection in hexaploid oat. A worldwide survey reveals how oat diversity is structured, spread, and shaped by breeding, helping pinpoint untapped genetic resources for future improvement.
- Genomic diversity and the domestication history of cotton (Gossypium hirsutum). Its genome traces cotton’s journey from its wild origins in Mesoamerica while documenting the genetic narrowing that accompanied domestication.
- Genetic architecture of sugarcane traits in a polyploid genomics framework. New genomic tools finally begin to untangle the diversity of one of agriculture’s most genetically complex crops, exposing the basis of traits breeders have long selected largely in the dark.
- Projected warming will exceed the long-term thermal limits of rice cultivation. Rice has historically thrived within remarkably stable climatic boundaries. Those boundaries are now on course to be crossed across major growing regions, with profound implications for global food security. Diversity to the rescue?
- An inter-specific Amaranthus pangenome captures genetic variation potentially underlying key leafy vegetable traits in this underutilised crop. A rich reservoir of previously hidden diversity emerges from across multiple cultivated amaranths, offering breeders new options for improving a neglected but nutritious vegetable.
- Impact of gardening and nutrition support provided to women in refugee camps in Cox’s Bazar, Bangladesh. Even in one of the world’s most challenging humanitarian settings, greater interspecific crop diversity translated into better diets, improved food security, and enhanced wellbeing.
- Designing perennial crop-based agroforestry systems: specificities, challenges, and opportunities. Diversification does not stop at the field edge: how perennial crops can be combined with trees to deliver productive, resilient, and biodiversity-friendly farming systems.
- Towards Nature Positive supply chains: From biodiversity commitments to organisational action. What would it take to move biodiversity from corporate promises to business practice? Maybe the above examples can help turn aspiration into measurable action.
Humble crop beats superfood
Two articles about the contrasting fortunes of Andean crops came out last week. They describe different sides of the same broad story: Indigenous agricultural systems are highly biodiverse and increasingly positioned as climate adaptation strategies, but they are also under pressure.
In Peru, potato farmers in places like the Parque de la Papa are actively conserving thousands of native potato varieties as a form of insurance. This is climate change adaptation: maintaining agrobiodiversity, preserving traditional knowledge, and using resilient crop varieties and farming practices to buffer against warming temperatures, erratic rainfall, and pest and disease pressure. The message is that crop diversity itself is a survival strategy, both ecological and cultural.
The recent history of quinoa in Bolivia shows the same system under a different kind of stress: global demand drove a commodity boom that incentivized monoculture expansion and mechanization, which in turn contributed to soil degradation, erosion and reduced resilience. Coming back from that is proving difficult.
Together, the two cases show that when Indigenous agroecosystems are treated as living repositories of diversity, they can enhance resilience, including to climate change; and that when they are pulled into boom-driven export specialization, that resilience can be undermined. The shared lesson, at least for me, is that climate adaptation in mountain agriculture depends on maintaining ecological and genetic diversity embedded in Indigenous land management systems.
A point that I suspect is highlighted in the book Andean Potatoes and Quinoa: Origin, Current Status and Recipes of Ancestral Crops, also recently announced.
Brainfood: Spatial data edition
- The ClimSat classification system—a global climate classification map based on long-term satellite-derived data. There’s a new global climate classification system in town, and it’s better ecologically than Köppen’s.
- The first global agricultural field boundary map at 10 m resolution. Combined with the above, we can now characterize the climate of every agricultural field in the world.
- GEM-Forest: A Global satellite EMbedding–based map of forests and tree crops for 2020. Do any of those fields have tree crops? And how far is the forest?
- Global annual cropland dynamics 2015–2024. The next time we map agricultural field boundaries, there will probably be more of them.
- Climate-induced range shifts support local plant diversity but don’t reduce extinction risk. Those new agricultural fields will be bad for wild plants.
- ‘SiteTool’: a ‘Shiny’ application for field site selection and evaluation. Cool new tool helps you select geographical sites based on ecological characteristics. Could be used to help decide where to collect or evaluate germplasm. Lots of opportunities for combining with some of the above, I suspect.
- Current and future potential of cassava (Manihot esculenta) in Southern Africa: a scoping review. An example of what you can do when you combine different types of spatial (and other data). The area suitable for cassava in Africa will increase, and there’s lots of scope for higher yields too. If we can combine datasets, soon we’ll know which specific fields to grow it in, for higher production, to protect wild biodiversity…
- Global and regional climate modes modulate armed conflict risk. …and to mitigate the risk of conflict.
Nibbles: Pearl millet redux, Garden plants, Armenian pics, Seeds galore, Heavenly Book, Pastoralism threats
- Pearl millet is getting the hybrid treatment. And, loving it.
- Want to know what to grow in your garden? Yes, even pearl millet.
- Nice pics of Armenian landscapes, food and foodways. No pearl millet in sight.
- The latest monthly newsletter from The Botanist in the Kitchen does seeds. Pearl millet unavailable for comment.
- China is genotyping and phenotyping (almost) everything. Pearl millet feeling left out.
- If pearl millet fails, there is always pastoralism. No, wait…
Brainfood: Targets, Plant Treaty, Decolonization, Fonio germination, Recalcitrant seeds, Microbiome, Taro seed system
- Status and future of seed conservation of threatened plants in the post-2020 era. 21% of threatened plants are conserved in genebanks across 44 countries in Europe and western Asia. Not bad, but not good enough. I wonder how many of those 21% will be of interest to breeders?
- How the international treaty on plant genetic resources for food and agriculture can support effective germplasm exchange: four Colombian case studies. The Plant Treaty can really help a country’s genebanks and breeders drive agricultural development, given half a chance.
- Reconciliation or re-colonization? Critical perspectives on seed banking and colonialism. Indigenous communities need to be careful in collaborating with genebanks and breeders.
- Impacts of climate change on fonio millet: seed germination ecology and suitability modelling of an indigenous West African cereal. Climate change will screw up the germination of fonio in some places, so genebanks and breeders better get cracking.
- Euterpe edulis seed recalcitrance: difficult, yes, but not impossible to genebank. Tricky seed storage behaviour need not deter genebankers.
- Accelerated aging caused diversity and specificity loss in the bacterial communities of Brassica napus seedlings. Genebanks should be careful with their seed aging experiments, because they might screw up the seed microbiome.
- Understanding Biotic Constraints to Taro (Colocasia esculenta) Production in the Derived Savanna and Humid Forest Agroecosystems of Nigeria. Genebanks need seed systems though.