Maoni Fu: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Yunke Zheng: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Jing Zhang: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Chengju Deng: Honghe Tropical Agriculture Institute of Yunnan, 661300 Hekou, China.
Jianbin Zhang: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Caihong Jia: Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
HongXia Miao: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Jingyi Wang: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Sijun Zheng: Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Bioversity International, 2238 Beijing Road, 650205 Kunming, China.
Zhiqiang Jin: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Xinguo Li: School of Tropical Agriculture and Forestry, Hainan University, 58 Renmin Road, 570228 Haikou, China.
Jianghui Xie: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China.
Juhua Liu: Banana Genetic Improvement Department, National Key Laboratory of Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology & Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, 571101 Haikou, China. ORCID
The present research examined the regulatory function of MaEIL4 in the ripening process of banana. The findings demonstrated that MaEIL4 is a transcription factor with activity in the nucleus. The transient modulation of MaEIL4 expression in banana fruit slices has been found to exert a significant impact on maturation, either enhancing or inhibiting its progression, as shown by phenotype and endogenous gene expression, and were coexpressed in bananas. MaEIL4 interacted with both the MaMADS36 protein and the TGAA box of the promoter to activate its expression. Moreover, MaMADS36 bound to the C(A/T)rG box of the promoter to regulate fruit ripening. The results have characterized the mechanism of MaMADS36's response to upstream ethylene signals and established a new module, MaEIL4-MaMADS36-MaACS7, which transcriptionally regulates banana fruit ripening. This research has enhanced our comprehension of the pivotal function of MaMADS36 in controlling fruit maturation and thus suggests new strategies for fruit shelf life improvement and postharvest loss reduction.
