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相关概念视频

Responses to Salt Stress02:02

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Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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缓解铜损伤和保持根功能之间的平衡在过度铜的根修剪期间根功能.

Yumei Zhou1, Shiyun Wu1, Jingjing Jia1

  • 1College of Ecological Technology and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China.

Tree physiology
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概括
此摘要是机器生成的。

容器上的氧化铜 (Cu(OH) 2) 涂层可以防止幼苗的根纠. 最佳度平衡了根的修剪,防御和营养吸收,T4显示了Duranta erecta L.苗木的最佳结果.

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铜的分配铜的分配.铜压力压力 铜压力压力红色的线性蛋白质 (lignin) 是一种营养物质的恒常性是营养的恒常性.根部活动 根部活动

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科学领域:

  • 植物生理学 植物生理学
  • 园艺科学 园艺科学
  • 环境毒理学环境毒理学

背景情况:

  • 根纠是容器种植苗木的一个主要问题.
  • 铜 (Cu) 涂层可以抑制根纠,但它们对根健康和功能的影响尚未完全理解.

研究的目的:

  • 研究不同度的氧化铜 (Cu(OH) 2) 对Duranta erecta L.幼苗的根结构,防御机制和营养吸收的影响.
  • 为了确定控制根纠的最佳Cu(OH) 2度,同时保持幼苗的生长和功能.

主要方法:

  • Duranta erecta L. 的幼苗是在涂上不同度的Cu(OH) 2 (40-160克L-1) 的容器中种植的.
  • 分析了根结构,生长参数 (高度,生物量),根活动,素度和矿物营养成分.

主要成果:

  • 高度的Cu (OH) 2 (T5,T6) 有效地抑制了根的纠,但损害了根的解剖结构.
  • 较低度 (T1,T2) 是无效的,增长迟缓.
  • (((OH) 2处理增加了根性红素度,在T3和T4.4处达到峰值.
  • 在T4的苗木表现出平衡的生长,没有根纠,并增强了K和Mn的吸收,表明了防御反应.
  • 过多的Cu改变了营养平衡,减少了Ca,增加了Mg,Mn,Fe和K.

结论:

  • 对于容器种植的苗木,存在一个特定的铜值,以有效控制根纠,支持防御机制,并保持营养吸收.
  • 120克L-1Cu(OH) 2 (T4) 的度似乎是Duranta erecta L.幼苗的最佳度,平衡了这些关键因素.