在阿斯特拉加卢斯,海王星 (Fabaceae) 和斯坦利亚 (Brassicaceae) 过度积累物中的生物通路的差异和相似之处
Antony van der Ent1,2,3, Mirko Salinitro4, Dennis Brueckner5
1Laboratory of Genetics, Wageningen University and Research, Wageningen, The Netherlands.
Annals of botany
|August 21, 2023
概括
过度积累在不同植物物种之间有所不同. 这项研究揭示了Astragalus,Stanleya和Neptunia中独特的分布和储存机制,这表明这种特征的多种进化起源.
科学领域:
- 植物生物学 植物生物学
- 生物地质化学生物地质化学
- 进化生物学 进化生物学
背景情况:
- 过度积累器植物对于理解的进化作用和生物强化至关重要,因为它在人类营养中至关重要.
- 在关键的过度积累的种群中 (Astragalus bisulcatus,Stanleya pinnata,Neptunia amplexicaulis) 调查的分布可以阐明潜在的生理机制.
研究的目的:
- 为了比较和对比三种最受研究的过度积累植物物种中的分布模式.
- 在这些种群中推断出负责转移和储存的独特生理机制.
主要方法:
- 使用基于同步子的微型X射线光 (μXRF) 显微镜.
- 视觉化了和其他元素在新鲜,水合植物组织中的空间分布 Astragalus racemosus,Stanleya pinnata,和海王星 amplexicaulis.
主要成果:
- 特定物种的分布:集中在叶子中 (A. racemosus,N. amplexicaulis) 或叶子边缘 (S. pinnata).
- 在所有物种的根和干细胞中都不存在.
- 鲜明的根和干积累:光线 (S. pinnata) 和花皮细胞 (A. racemosus,N. amplexicaulis).
结论:
- 阿斯特拉加勒斯,斯坦利亚和海王星表现出不同的生理学,包括独特的转移和储存策略.
- 显著的差异表明,在美国和澳大利亚的类似环境压力下,过度积累的独立演变.
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