Sustained cereal bowl amidst global warming

Area of Science:

• Plant science
• Genetics
• Agricultural science

Background:

• High day and night temperatures negatively impact grain yield and quality in essential cereal crops like rice, maize, and wheat.
• Global warming exacerbates the challenge of heat stress on crop production.

Purpose of the Study:

• To review recent advances in understanding the genetic and molecular mechanisms governing cereal crop responses to heat stress.
• To identify strategies for improving grain yield and quality under elevated temperatures.

Main Methods:

• Literature review of studies on clock genes, inflorescence architecture, and grain filling.
• Analysis of genetic regulatory mechanisms affected by heat stress.

Main Results:

• Advances in understanding clock gene regulation of flowering under heat stress.
• Identification of key genetic factors influencing inflorescence architecture and grain filling efficiency.
• Insights into maintaining starch-to-protein accumulation under high temperatures.

Conclusions:

• Unraveled knowledge provides a basis for developing heat-resilient cereal varieties.
• Opportunities exist to improve grain number and filling efficiency without compromising nutritional quality.
• Targeted genetic improvements can mitigate the negative effects of high temperatures on crop production.