Defense-growth balance orchestrates bud germination fate in field established sugarcane from a transcriptomic and metabolomic perspective
文献类型： 外文期刊
作者： Yang, Shaolin 1 ; Wang, Yutong 1 ; Ai, Jing 1 ; Wu, Qibin 2 ; Zang, Shoujian 2 ; Deng, Jun 1 ; Li, Rudan 1 ; Dao, Jingmei 1 ; Zhang, Zhongfu 1 ; Zhao, Yong 1 ; Guo, Jiawen 1 ; Zhang, Yuebin 1 ; Que, Youxiong 1 ;
作者机构： 1.Sugarcane Res Inst, Yunnan Acad Agr Sci, State Key Lab Trop Crop Breeding, Kaiyuan 661699, Peoples R China
2.Fujian Agr & Forestry Univ, Natl Engn Res Ctr Sugarcane, Key Lab Sugarcane Biol & Genet Breeding, Coll Agr,Minist Agr & Rural Affairs, Fuzhou 350002, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Sanya Res Inst, State Key Lab Trop Crop Breeding, Sanya, Hainan, Peoples R China
4.Yunnan Acad Agr Sci, Sugarcane Res Inst, Key Lab Sugarcane Genet Improvement, Kaiyuan 661699, Peoples R China
关键词： Sugarcane; Germination and dormancy; Glycometabolism; Phytohormone; Transcriptomics and metabolomics; WGCNA
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）
ISSN： 0926-6690
年卷期： 2025 年 235 卷
页码：
收录情况： SCI
摘要： Bud germination rate and emergence uniformity are critical agronomic traits for sugarcane production, as they directly influence raw cane consumption during planting and the formation of ratooning ability. In this study, we employed integrated transcriptomic and metabolomic analyses to explore the molecular factors that distinguish successful from failed bud germination in field-grown cultivar YZ08-1609 across key developmental stages. Our multi-omics profiling and functional enrichment analysis highlighted critical pathway networks, including carbohydrate metabolism, phytohormone biosynthesis and signaling, plant-pathogen interactions and MAPK cascades (MEKK1, WRKY24/35), and ROS-hormonal crosstalk (RBOHB, ERF094, ACS6). Notably, weighted gene coexpression network analysis (WGCNA) identified two germination-promoting modules enriched with proline-rich protein genes (TPRP-F1, PRP4), cell wall remodeling factor (WAT1), ethylene biosynthesis genes (MAO1Bs), and histone modifiers (Histone H2B.5, etc.), as well as two germination-inhibiting modules dominated by methylation regulator (OMT3), defence-related genes (Barwin, Zlp) and flavonoid biosynthetic factors (CHS1, ANR). Further mechanism studies showed that these modules coordinate the growth-defence balance through four interconnected mechanisms: (i) metabolic balance between the production and consumption of ROS, (ii) epigenetic chromatin reorganization via histone modifications, (iii) methylation-driven transcriptional regulation, and (iv) phytoalexin-dependent pathogen resistance. Overall, this study provides the first detailed map of the molecular networks governing sugarcane bud germination.
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