菜 (Spinacia oleracea) 具有表皮膀细胞,并表现出 fakultative 类植物的特征
Clarissa Buarque Vieira1,2, Jorge F S Ferreira3, Devinder Sandhu4
1Federal Rural University of Pernambuco (UFRPE), Dois Irmãos, Recife, Brazil.
Communications biology
|November 29, 2025
概括
菜具有皮肤膀细胞 (EBCs),可以积累盐,这表明它可能是一个可选的类植物,而不是糖类植物. 这些发现为菜解剖学和盐耐受机制提供了新的见解.
科学领域:
- 植物解剖学和生理学
- 植物中的盐度应激反应
- 哈洛菲特的研究研究.
背景情况:
- 皮肤膀细胞 (EBC) 在菜中已知,但在菜中以前没有报告.
- 菜传统上被归类为糖核植物,但有证据表明它可以容忍盐度.
- 了解菜中的EBC可以揭示新的盐耐受机制.
研究的目的:
- 在盐度压力下调查菜中EBC的存在和特征.
- 为了比较积和基因表达在菜EBCs与菜EBCs.
- 与菜相比,评估菜的生理反应和盐耐受性.
主要方法:
- 扫描电子显微镜与能量分散式X射线光谱学 (SEM-EDS) 相结合,用于分析EBC.
- 在低盐度 (2 dS m-1) 和高盐度 (25 dS m-1) 下,比较两种菜和两种菜品种.
- 在EBC和EBC无叶组织中分析Na-和Cl-载体基因表达.
主要成果:
- 菜具有具有多细胞茎的EBCs,这些茎积累了Cl,K和Na.
- 昆EBC具有单细胞茎,没有可检测的Na信号.
- 菜在EBC中表现出盐转运基因的更高表达,尽管存在显著的离子积累,但没有显示出可见的盐毒性.
- 在盐度下,菜和菜都显示出生物质和植物高度的可比减少.
结论:
- 菜拥有EBCs,挑战其传统的糖核生物分类.
- 存在EBCs和明显的盐耐受性表明菜可能是一个可选的类植物.
- 这些发现为菜在盐分压力下的解剖适应和离子分离提供了新的见解.
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