The Fence Post (Issue 1)
Welcome to the very first edition of The Fence Post. Each week we’ll round up and recap the latest science news from the world of soil, plants, and agriculture.
This week: a hormone trick that could improve how we grow food, advances in biofortified corn in sub-Saharan Africa and a recap on the history of plants.
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1 | New research on plant hormones to reduce stress and promote growth of crops
Plants have a problem any overworked person might recognise: when dealing with something stressful, everything else slips. When a crop plant detects disease or pests, its immune system activates and growth gets suppressed in the process. For a farmer depending on that plant for yield, that’s a real problem.
Researchers at Colorado State University think they’ve found a way around it. The key is a group of hormones called cytokinins (hormones responsible for cell division). When plants are under stress from disease, cytokinin levels drop as the plant redirects energy toward defence instead of growth.
By restoring those hormone levels in plants with overactive immune systems, the scientists were able to restart growth without weakening the plant’s defences. In fact, the modified plants showed even stronger resistance to disease.
The team is now exploring collaborations with breeding programs worldwide to test the approach in wheat, corn, and soybeans.
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2 | Advances in corn biofortification: nutrition and cultural acceptance
A 22-year collaboration between Purdue University scientists and international colleagues has this week produced a milestone report on advances in biofortified corn in sub-Saharan Africa.
The project focuses on orange-coloured corn varieties high in provitamin A carotenoids, compounds the body converts into vitamin A. White corn, which has almost no carotenoids, is the dominant staple across much of sub-Saharan Africa, and vitamin A deficiency remains a leading cause of blindness in young children in the region.
The orange variety is more nutritious and, over time, more culturally accepted. More than anything, this story is a reminder that agricultural science isn’t always about drastic breakthroughs. Sometimes it’s two decades of careful crop breeding, carried out in close collaboration and partnership with the communities it’s meant to serve.
Read more: https://ag.purdue.edu/news/2026/03/global-collaboration-on-provitamin-a-reaps-reward.html
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3 | How plants conquered the land
Plants changed the atmosphere, built soil, and created ecosystems that allowed animals like us to thrive. But first, they had to make their way from the water to the land.
It’s a fitting reminder that the story of farming begins in deep geological time. The soil under our feet is itself the product of hundreds of millions of years of plant life doing its quiet and essential work.
Read more: https://theconversation.com/what-was-the-very-first-plant-in-the-world-271828
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For any enquires and feedback, email us at smartfertiliser-hub@unimelb.edu.au
