Global analysis of seed transcriptomes reveals a novel PLATZ regulator for seed size and weight control in soybean

Summary Seed size and weight are important factors that influence soybean yield. Combining the weighted gene co‐expression network analysis (WGCNA) of 45 soybean accessions and gene dynamic changes in seeds at seven developmental stages, we identified candidate genes that may control the seed size/w...

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Published in:The New phytologist 2023-12, Vol.240 (6), p.2436-2454
Main Authors: Hu, Yang, Liu, Yue, Lu, Long, Tao, Jian‐Jun, Cheng, Tong, Jin, Meng, Wang, Zhou‐Ya, Wei, Jun‐Jie, Jiang, Zhi‐Hao, Sun, Wan‐Cai, Liu, Cheng‐Lan, Gao, Feng, Zhang, Yong, Li, Wei, Bi, Ying‐Dong, Lai, Yong‐Cai, Zhou, Bin, Yu, De‐Yue, Yin, Cui‐Cui, Wei, Wei, Zhang, Wan‐Ke, Chen, Shou‐Yi, Zhang, Jin‐Song
Format: Article
Language:English
Subjects:
Agronomic crops
Binding
Breeding
cell cycle
Cell proliferation
Crop yield
Developmental stages
Gene expression
Genes
gibberellin
Glycine max - genetics
Haplotypes
Network analysis
Plant Breeding
PLATZ
Proliferation
Quantitative Trait Loci
seed size
seed weight
Seeds
Seeds - genetics
Sequences
soybean
Soybeans
Transcriptome - genetics
Transcriptomes
Weight
Zinc
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Summary:Summary Seed size and weight are important factors that influence soybean yield. Combining the weighted gene co‐expression network analysis (WGCNA) of 45 soybean accessions and gene dynamic changes in seeds at seven developmental stages, we identified candidate genes that may control the seed size/weight. Among these, a PLATZ‐type regulator overlapping with 10 seed weight QTLs was further investigated. This zinc‐finger transcriptional regulator, named as GmPLATZ, is required for the promotion of seed size and weight in soybean. The GmPLATZ may exert its functions through direct binding to the promoters and activation of the expression of cyclin genes and GmGA20OX for cell proliferation. Overexpression of the GmGA20OX enhanced seed size/weight in soybean. We further found that the GmPLATZ binds to a 32‐bp sequence containing a core palindromic element AATGCGCATT. Spacing of the flanking sequences beyond the core element facilitated GmPLATZ binding. An elite haplotype Hap3 was also identified to have higher promoter activity and correlated with higher gene expression and higher seed weight. Orthologues of the GmPLATZ from rice and Arabidopsis play similar roles in seeds. Our study reveals a novel module of GmPLATZ‐GmGA20OX/cyclins in regulating seed size and weight and provides valuable targets for breeding of crops with desirable agronomic traits.
ISSN:0028-646X
1469-8137
DOI:10.1111/nph.19316