细胞因素调节的WUSCHEL促进了Pinus yunnanensis的侧叶芽和血管的发展
Junfei Xu1,2, Chiyu Zhou1,2, Xin Su1,2
1The Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, No. 300 Bailongsi, Kunming, Yunnan Province, 650224, China.
The Plant journal : for cell and molecular biology
|January 31, 2026
概括
细胞因素 (CK) 活动通过激活WUSCHEL (WUS) 来驱动云南松树的侧向芽生长. 在模型植物中,PyWUS增强了生长,分枝和血管发育,揭示了针叶树中保存的功能.
科学领域:
- 植物生物学 植物生物学
- 发展生物学 发展生物学
- 林业林业 林业 林业 林业
背景情况:
- 侧叶芽生长和二次血管发育对于植物结构和木材形成至关重要.
- 控制针叶树 (如Pinus yunnanensis) 中美里斯特姆活动和芽发育的调节机制尚未完全理解.
研究的目的:
- 研究调节Pinus yunnanensis.侧叶芽外生长的分子机制.
- 阐明WUSCHEL (WUS) 在美里系统活动,芽发育和二次血管生长中的作用.
主要方法:
- 松树 (Pinus yunnanensis) 幼苗的表型,生理和分子分析.
- 基因表达分析,包括WUSCHEL (WUS) 和下游目标.
- 在Arabidopsis和树中PyWUS的异质表达.
- 酵母两杂交测试以确定蛋白质相互作用.
主要成果:
- 局部细胞因素 (CK) 活性通过诱导WUSCHEL (WUS) 表达促进侧向芽生长.
- 过度表达PyWUS加速了植物生长,增强了芽的分枝,并促进了模型植物的二次血管发育.
- PyWUS与WOX转录因子相互作用,这表明一个保存的调节网络.
结论:
- 细胞因素-WUSCHEL通路对于Pinus的横向芽生长至关重要.
- 维舍尔在调节侧叶芽外生长方面发挥着保留作用,并且在促进针叶树的二次血管发育方面具有新的功能.
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