Modulating TPP riboswitch activity simultaneously enhances crop yield, nutritional quality and stress tolerance.

Area of Science:

• Agricultural Science
• Biotechnology
• Plant Biology

Background:

• Crop yield improvements often reduce nutritional quality and stress tolerance.
• Sustainable food security requires crops with high yield, nutrition, and resilience.
• Thiamine pyrophosphate (TPP), vitamin B1's active form, is crucial for plant metabolism and stress response.

Purpose of the Study:

• To investigate the effects of editing the rice TPP riboswitch on crop productivity and quality.
• To determine if TPP modulation can enhance micronutrient levels, yield, and stress tolerance simultaneously.
• To assess the generalizability of this approach in other crops like tomato.

Main Methods:

• Utilized gene editing techniques to modify the TPP riboswitch in rice.
• Analyzed changes in micronutrient content, grain yield, and stress tolerance (cold, blast).
• Performed transcriptomic and metabolic analyses to understand underlying mechanisms.
• Applied similar editing strategies to tomato plants.

Main Results:

• Editing the rice TPP riboswitch significantly increased multiple micronutrients.
• Simultaneously observed were enhanced grain yield, cold tolerance, and blast resistance.
• Mechanisms involved improved photosynthesis, nitrogen use efficiency, and metabolic reprogramming.
• Similar positive outcomes were achieved in tomato, demonstrating broad applicability.

Conclusions:

• Modulating TPP levels via riboswitch editing is a viable strategy for crop improvement.
• This approach synergistically enhances crop productivity, nutritional quality, and stress tolerance.
• Offers a trade-off-free solution to achieve sustainable food security.