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释放糖可以使番茄变得更甜,而不会影响产量

Jinzhe Zhang¹, Hongjun Lyu^2,3, Jie Chen²

¹State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.

|November 13, 2024

概括

研究人员发现两种调节水果糖含量的番茄基因SlCDPK27和SlCDPK26. 这些基因的基因编辑增加了30%的甜度,而没有影响果实大小或产量,为甜的西红提供了途径.

科学领域:

植物生物学
遗传学
农业科学

背景情况:

消费者对番茄的偏好与较高的糖分密切相关.
由于糖和果实大小之间的反向关系,商用番茄品种通常含糖量较低.
种植者通常优先考虑水果产量而不是品质.

研究的目的:

确定控制番茄果糖含量的基因.
调查SlCDPK27和SlCDPK26在调节糖累积中的作用.
在不影响产量或大小的情况下, 探索提高番茄甜度的方法.

主要方法:

鉴定和描述两种番茄依赖的蛋白激酶基因:SlCDPK27和SlCDPK26.
在番茄植物中对SlCDPK27和SlCDPK26进行基因编辑 (淘汰).
对基因编辑和野生番茄的糖分 (葡萄糖和果糖) 的分析.
在突变系中评估水果重量,产量,种子特征和发芽.

主要成果:

确定SlCDPK27和SlCDPK26是番茄果糖含量的关键调节剂.
这些基因通过酸化和促进糖合成酶的降解起到"糖制动器"的作用.
基因编辑的SlCDPK27和SlCDPK26导致葡萄糖和果糖增加了多达30%.
增加了甜度,但没有对水果重量或整体产量产生任何负面影响.
突变系显示种子数量减少和种子较轻,但保持正常发芽.

结论:

在番茄果糖积累的调控机制中,SlCDPK27和SlCDPK26起着至关重要的作用.
针对这些基因提供了一个可行的策略来增加大果番茄品种的糖分.
这项研究提供了一条改善番茄口味质量的途径,

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