Shandong researchers identify genome ‘Guardian’ for stronger crops

CHINA – Researchers at Shandong Agricultural University have identified a key genome “guardian” that protects plants from DNA damage, a finding that could shape future crop breeding and food security efforts.

A team led by Dr Fang Liu from the State Key Laboratory of Crop Biology studied the Arabidopsis homolog of the mammalian AATF/Che-1 protein, known as AtCHE1. Their findings, published in Communications Biology, reveal that this protein plays a central role in keeping plant genomes stable under stress.

“Understanding how AtCHE1 functions is like finding a guardian of the plant genome,” said Dr Liu. “It helps protect DNA from damage, ensuring proper development.”

The researchers identified a mutant version of AtCHE1 in a chemically treated Arabidopsis population. Plants with this mutation grew short roots and small leaves.

They also showed severe DNA damage, high cell death, and defects at the root tip. These results highlight how AtCHE1 maintains root development and genome stability, which are vital for growth and yield.

Wider agricultural benefits

The discovery goes beyond scientific value. As climate change brings heat, drought, and disease pressure, AtCHE1 could help breeders develop crops that perform better under stress.

Stronger plants not only support farmers with reliable harvests but also reduce the risks that come with food insecurity.

“This kind of research can help us prepare crops that stay healthy even in harsh conditions,” Dr Liu noted. “It creates options for more stable food supplies.”

The work could also play a role in the renewable energy sector. Growing demand for biomass in biofuels and bioplastics requires high-yield crops.

By improving plant resilience and productivity, discoveries like AtCHE1 may support cleaner energy goals while reducing strain on farmlands.

Broader scientific advances

The findings in Shandong come at a time of global progress in plant science. Recently, researchers in Europe reported new insights into how maize adapts to heat stress by reprogramming its metabolic pathways.

Scientists in the United States also advanced genome editing tools that speed up the breeding of disease-resistant rice.

Together, these advances point to a growing toolkit for building crops that can thrive in challenging environments. The AtCHE1 discovery adds to this momentum, offering a foundation for both food production and renewable energy.

As Dr Liu and her team emphasize, genome “guardians” like AtCHE1 represent more than a scientific curiosity. They provide practical steps toward sustainable farming and long-term food security.

“Our work shows how plants protect their own DNA,” said Dr Liu. “If we can use that knowledge in crops, we can make them stronger and more reliable for the future.”

Sign up to receive our email newsletters with the latest news updates and insights from Africa and the World HERE.