Mutation in maize chloroplastic polypeptide chain release factor (ZmcpRF1) affects chloroplast development and leaf
Hao Chen1, Haixiao Dong1, Xiaohui Shan1
1Jilin Engineering Research Center for Crop Biotechnology Breeding, College of Plant Science, Jilin University, Changchun, 130062, China.
Planta
|July 27, 2025
Summary
The chloroplastic polypeptide chain release factor ZmcpRF1 is crucial for maize chloroplast development and leaf color, impacting plant survival. Mutations in ZmcpRF1 lead to pale green leaves and stunted growth, highlighting its essential role.
Area of Science:
- Plant genetics
- Molecular biology
- Photosynthesis research
Background:
- Leaf color mutations offer insights into plant photosynthesis and development.
- Maize mutants with pale green and stunted phenotypes were studied.
- Understanding chloroplast development is key to plant health.
Purpose of the Study:
- To identify the genetic basis of pale green and stunted phenotypes in maize.
- To elucidate the role of ZmcpRF1 in chloroplast development and plant survival.
- To characterize the effects of ZmcpRF1 mutations on maize plants.
Main Methods:
- Genetic analysis and bulked segregant analysis (BSA).
- Whole-genome sequencing (WGS) to identify candidate genes.
- Allelic validation, chlorophyll content analysis, and chloroplast morphology observation.
Main Results:
- ZmcpRF1 (chloroplastic polypeptide chain release factor 1) was identified as the gene responsible for the pale green trait.
- A missense mutation in ZmcpRF1 caused decreased chlorophyll and abnormal chloroplasts.
- ZmcpRF1 is essential for chloroplast development, leaf color, and plant survival in maize.
Conclusions:
- ZmcpRF1 is a key regulator of chloroplast development and leaf color in maize.
- Mutations in ZmcpRF1 severely affect plant growth and survival.
- This study highlights the functional importance of ZmcpRF1 in maize.
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