Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education/College of Environmental Science and Engineering, Nankai University, Tianjin, China.
Arch Environ Contam Toxicol. 2010 Nov;59(4):564-73. doi: 10.1007/s00244-010-9522-5. Epub 2010 Apr 16.
The single and joint toxicological effects of AHTN and cadmium (Cd) on early developmental stages of wheat, including AHTN and Cd uptake, chlorophyll (CHL), malondialdehyde (MDA), superoxide dismutase (SOD), and peroxidase (POD) contents in the seedlings, were investigated. Uptake of AHTN or Cd by seedlings increased with an increase in the concentrations of AHTN and Cd in soil. The presence of Cd inhibited the uptake of AHTN in wheat seedlings, while the low concentration of AHTN could induce the uptake of Cd. The biosynthesis of CHL was significantly inhibited by single AHTN and joint stress with AHTN and Cd. The MDA contents in wheat leaves and roots were significantly affected by single and joint stress with AHTN and Cd. SOD and POD activities in leaves was significantly induced by AHTN and Cd. However, the effect of AHTN and Cd on SOD and POD activities in roots was insignificant. This might indicate that wheat leaves were more sensitive to the binary mixture than wheat roots.
研究了 AHTN 和镉（Cd）单一及联合毒性对小麦早期发育阶段的影响，包括幼苗对 AHTN 和 Cd 的吸收、叶绿素（CHL）、丙二醛（MDA）、超氧化物歧化酶（SOD）和过氧化物酶（POD）的含量。幼苗对 AHTN 或 Cd 的吸收随土壤中 AHTN 和 Cd 浓度的增加而增加。Cd 的存在抑制了小麦幼苗对 AHTN 的吸收，而低浓度的 AHTN 可以诱导 Cd 的吸收。单一 AHTN 和 AHTN 与 Cd 的联合胁迫显著抑制 CHL 的生物合成。小麦叶片和根中 MDA 的含量受 AHTN 和 Cd 的单一及联合胁迫显著影响。SOD 和 POD 活性在叶片中被 AHTN 和 Cd 显著诱导，但 AHTN 和 Cd 对根中 SOD 和 POD 活性的影响不显著。这可能表明，与小麦根相比，小麦叶片对二元混合物更敏感。
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