Genetic optimization of the source, sink and flow for increasing seed oil content in rapeseed

文献类型： 外文期刊

第一作者： Shen, Wenhao

作者： Shen, Wenhao;Yu, Liangqian;Qu, Qian;Han, Xu;Guo, Liang;Tang, Shan;Qu, Qian;Guo, Liang;Ma, Wei;Zu, Feng

作者机构：

关键词： flow; genetic improvement; rapeseed; seed oil; sink; source

期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：9.3； 五年影响因子：10.8 ）

ISSN： 1672-9072

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Rapeseed (Brassica napus) is one of the most important oilseed crops worldwide, with its seed oil content (SOC) and quality directly determining its economic value. To resolve the challenges of growing demand for vegetable oil and advancements in rapeseed production, substantial progress has been achieved in the genetic improvement of SOC. This review systemizes genetic optimization strategies across three hierarchical processes: source expansion via enhanced photosynthesis, optimized carbon allocation, and metabolic redirection of photoassimilates; sink enhancement through targeted elevation of fatty acid (FA) synthesis, triacylglycerol (TAG) assembly, and seed coat development coupled with suppression of lipolytic pathways; flow optimization by modifying carbon partitioning, sucrose phloem loading and channeling to developing seeds. We synthesize reported genetic determinants of these processes and underscore their potential for enhancing SOC. Furthermore, we postulate that synergistic integration of source-flow-sink coordination with push-pull-package-protect frameworks could maximize oil accumulation, thereby establishing a multi-tiered roadmap for transcending SOC ceilings in rapeseed.

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