Effect of Phosphorus on Speciation and Distribution of Aluminum in the Roots of Buckwheat Under Aluminum Toxicity

WANG Ning; ZHENG Yi; WANG Fang-mei; WU Kun; LIU Jian-feng; CAI Miao-zhen

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Effect of Phosphorus on Speciation and Distribution of Aluminum in the Roots of Buckwheat Under Aluminum Toxicity

更新时间：2024-11-07

- Effect of Phosphorus on Speciation and Distribution of Aluminum in the Roots of Buckwheat Under Aluminum Toxicity
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 浙江师范大学化学与生命科学学院
  2. 浙江师范大学地理与环境科学学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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WANG Ning, ZHENG Yi, WANG Fang-mei, et al. Effect of Phosphorus on Speciation and Distribution of Aluminum in the Roots of Buckwheat Under Aluminum Toxicity[J]. 2011, 25(5).
DOI：

WANG Ning, ZHENG Yi, WANG Fang-mei, et al. Effect of Phosphorus on Speciation and Distribution of Aluminum in the Roots of Buckwheat Under Aluminum Toxicity[J]. 2011, 25(5). DOI：

摘要

以2个荞麦(Fagopyrum esculentum Moench)品种江西荞麦(铝耐性)和内蒙荞麦(铝敏感)为材料

采用水培法

研究铝毒胁迫下磷对荞麦根系总铝和单核2种形态以及Al在根尖和细胞壁中的分布情况的影响。结果表明

与200μmol/L Al处理相比

1.0mmol/L磷预处理分别使江西荞麦和内蒙荞麦的相对根长增加了24.4%和35.9%

根系总Al含量分别降低了18.2%和22.5%

根系单核Al含量分别降低了95%和63.2%。根尖细胞壁荧光检测结果为在单Al胁迫下细胞壁的荧光强度最大

1.0mmol/L磷预处理大幅度减弱细胞壁的荧光强度。表明外源磷供应可降低根系总Al和单核Al含量

使毒性形态的铝转化为无毒形态

以及减少Al在根尖以及细胞壁的积累

以缓解Al对根伸长的抑制

提高荞麦根系的抗铝毒害能力。

Abstract

To verify the effect of phosphorus on the speciation and distribution of aluminum in the roots

two buckwheat cultivars(Jiangxi buckwheat

Al resistant cultivar;and Neimeng buckwheat

Al sensitive cultivar) differing in Al resistance were used to compare Al tolerance between cultivars.Additionally

the total Al content

monomeric Al content in roots and Al distribution in root tips were measured as indicators of the effect of phosphorus on Al.Compared to a single Al treatment

phosphorus pretreatment increased re...

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