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Effects of Aluminum (Al) on Organic Acid Accumulation in Soybean Roots(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年02期
Page:
256-262
Research Field:
Publishing date:

Info

Title:
Effects of Aluminum (Al) on Organic Acid Accumulation in Soybean Roots
Author(s):
TIAN Cong;  ZHANG Shuo;  SU Chang;  GUO Anjing;  BAI Zhenlong;  LIANG Cuiyue
（State Key Laboratory for Conservation and Utilization of Subtropical Agrobioresources / Root Biology Center, South China Agricultural University, Guangzhou 510642, China）
Keywords:
Aluminum;  Soybean;  Malate;  Citrate;  Oxalate
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.02.0256
Abstract:
The objective of this study was to evaluate the effects of aluminum (Al) on the response of organic acids accumulation in soybean roots One soybean genotype YC03 3 was treated with or without Al The relative root growth rate and Al accumulation in different root segments were investigated Furthermore, the concentration of three types of organic acid including malate, citrate and oxalate were measured Results showed that the soybean root growth was significantly inhibited by Al treatment The Al content decreased in the 0-2 cm root segment, while increased in the 2-4 cm root segment with the Al treatment period increased Furthermore, the organic acid concentrations in different root segments were divergently affected by Al treatment Short period of Al treatment (6 h) didn’t affect the citrate and oxalate concentration in soybean roots, but significantly increased the malate concentration in roots After 12 hours of Al treatment, the concentration of three organic acids in 0-2 cm root segments were not significantly altered However, the malate concentration and the oxalate concentration in the 2-4 cm root segments were significantly higher than that in control Therefore, malate and oxalate accumulation might affect internal Al tolerance of soybean roots

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Last Update: 2017-05-14