New study shows microbes aid plant response to rising temperatures
New research shows that tiny microbes living near plant roots may help crops survive heat stress. This area around the roots is called the rhizosphere, and it is full of beneficial microorganisms.
Scientists usually study how genes and the environment work together to affect plant traits. This is known as Genotype by Environment interactions, or GxE. However, researchers at North Carolina State University have added another important factor, the rhizosphere microbiome. They created a new model called Genotype by Environment by Rhizosphere Microbiome interactions, or GERM.
The study focused on maize and sorghum grown in normal and high-temperature conditions. Researchers found that both plant genetics and temperature influenced how microbes behaved around the roots. These microbial changes were linked to how plants responded to heat.
Nate Korth, the lead author and a postdoctoral fellow at NC State, explained that heat may signal plants to activate certain genes. These genes are usually inactive under normal conditions. The presence of microbes may help switch on these responses.
The study also found that plants and microbes appear to communicate. This connection could be important for helping crops adapt to climate stress. However, scientists still need to understand how this interaction works. They do not yet know if plants change the microbes first or if microbes influence plant gene activity.
Scientists believe this discovery could lead to new farming practices. In the future, it may be possible to manage root microbes to improve crop resilience. This could help farmers grow stronger crops even under rising temperatures.
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