Despite our advances in understanding nature, many mysteries still linger. One of the most intriguing is rice, a staple food for billions around the globe.
Researchers from the Nara Institute of Science and Technology (NAIST) are investigating why rice can flourish in some regions without fertilizers while needing them in others. Their study, published in Plant and Cell Physiology, sheds light on a critical question in sustainable agriculture.
The team focused on plant root microbes. These tiny helpers can significantly improve plant health, especially in poor soils. They compared two nearby rice fields: one had been cultivated for 70 years without fertilizers or pesticides, while the other was fertilized conventionally. Surprisingly, the unfertilized field produced about 60-70% of the yields of the fertilized one.
During their research, the scientists collected samples over several seasons from the roots of Japanese rice plants. They examined the microbial DNA and made several significant discoveries.
First, they found that as the rice plants grew, the diversity of microbes increased. In the unfertilized field, nitrogen-fixing bacteria thrived, converting atmospheric nitrogen into a form that the rice could utilize. This process mimics the action of fertilizers.
Moreover, the genes responsible for nitrogen fixation were more prevalent in the unfertilized rice roots. Different types of bacteria also played unique roles at various growth stages. Early on, anaerobic bacteria were more prominent, but as the plants matured, aerobic and microaerophilic bacteria became more involved. This shift correlates with the soil’s oxygen levels, which can change based on farming techniques.
“These results give us meaningful insights into rice’s root microbiome in nutrient-poor environments,” the researchers noted.
Interestingly, this research coincides with rising challenges in rice production. Climate change is heavily impacting yields worldwide. For instance, Malaysia is facing rice shortages due to extreme weather, while India grapples with plant diseases.
In response, innovative strategies are being explored. Some researchers are using zinc oxide nanoparticles to help rice endure heat stress. Others are examining rice genomes to improve resilience against cold. The NAIST team hopes their work will lead to more sustainable rice farming.
“By isolating these beneficial bacteria and creating customized microbial blends, we can create a more sustainable future for rice farming,” said study leader Yusuke Saijo.
With millions relying on rice, understanding its growth and resilience is more vital than ever. Each step towards sustainable practices can significantly impact food security worldwide.
Source link
Business,Food,Food/Agriculture Showcase,Garden,Hacks,Home,Outdoors,Tech Showcase,Waste Less,Yahoo Tech

















