Aluminum targets elongating cells by reducing cell wall extensibility in wheat roots
文献类型：期刊论文
| 作者 | Ma, JF; Shen, RF; Nagao, S; Tanimoto, E |
| 刊名 | PLANT AND CELL PHYSIOLOGY
 |
| 出版日期 | 2004 |
| 卷号 | 45期号:5页码:583-589 |
| 关键词 | aluminum toxicity cell wall extensibility root elongation Triticum aestivum L. |
| ISSN号 | 0032-0781 |
| 通讯作者 | Ma, JF(maj@ag.kagawa-u.ac.jp) |
| 英文摘要 | Phytotoxicity of aluminum is characterized by a rapid inhibition of root elongation at micromolar concentrations, however, the mechanisms primarily responsible for this response are not well understood. We investigated the effect of Al on the viscosity and elasticity parameters of root cell wall by a creep-extension analysis in two cultivars of wheat (Triticum aestivum L.) differing in Al resistance. The root elongation and both viscous and elastic extensibility of cell wall of the root apices were hardly affected by the exposure to 10 muM Al in an Al-resistant cultivar, Atlas 66. However, similar exposure rapidly inhibited root elongation in an Al-sensitive cultivar, Scout 66 and this was associated with a time-dependent accumulation of Al in the root tissues with more than 77% residing in the cell wall. Al caused a significant decrease in both the viscous and elastic extensibility of cell wall of the root apices of Scout 66. The "break load" of the root apex of Scout 66 was also decreased by Al. However, neither the viscosity nor elasticity of the cell wall was affected by in vitro Al treatment. Furthermore, pre-treatment of seedlings with Al in conditions where root elongation was slow (i.e. low temperature) did not affect the subsequent elongation of roots in a 0 Al treatment at room temperature. These results suggest that the Al-dependent changes in the cell wall viscosity and elasticity are involved in the inhibition of root growth. Furthermore, for Al to reduce cell wall extensibility it must interact with the cell walls of actively elongating cells. |
| 收录类别 | SCI |
| WOS关键词 | VISCOELASTIC PROPERTIES ; SENSITIVE WHEAT ; HIGHER-PLANTS ; TOXICITY ; INHIBITION ; AL ; ACCUMULATION ; RESISTANCE ; TOLERANT ; GROWTH |
| WOS研究方向 | Plant Sciences ; Cell Biology |
| WOS类目 | Plant Sciences ; Cell Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000221761200010 |
| 出版者 | OXFORD UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558405 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Ma, JF |
| 作者单位 | 1.Kagawa Univ, Fac Agr, Miki, Kagawa 7610795, Japan 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Nagoya City Univ, Grad Sch Nat Sci, Mizuho Ku, Nagoya, Aichi 4678501, Japan |
| 推荐引用方式 GB/T 7714 | Ma, JF,Shen, RF,Nagao, S,et al. Aluminum targets elongating cells by reducing cell wall extensibility in wheat roots[J]. PLANT AND CELL PHYSIOLOGY,2004,45(5):583-589. |
| APA | Ma, JF,Shen, RF,Nagao, S,&Tanimoto, E.(2004).Aluminum targets elongating cells by reducing cell wall extensibility in wheat roots.PLANT AND CELL PHYSIOLOGY,45(5),583-589. |
| MLA | Ma, JF,et al."Aluminum targets elongating cells by reducing cell wall extensibility in wheat roots".PLANT AND CELL PHYSIOLOGY 45.5(2004):583-589. |
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来源：南京土壤研究所
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