2012 Fiscal Year Final Research Report
Studies on the heavy-metal tolerance and interactions between several metal-binding ligands in plants exposed to complex pollution conditions.
| Project/Area Number |
22580377
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Boundary agriculture
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| Research Institution | Ehime University |
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Principal Investigator |
INOUHE Masahiro 愛媛大学, 大学院・理工学研究科, 教授 (80203256)
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| Co-Investigator(Renkei-kenkyūsha) |
SAKUMA Yoh 愛媛大学, 大学院・理工学研究科, 准教授 (70452688)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 環境浄化 |
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| Research Abstract |
In the present studies, we examined the possible mechanisms for the heavy-metal tolerance and interactions with metal-binding ligands in plants exposed to complex conditions. We found
(1) In tomato cells, phytochelatin (PC) formation and accumulation are involved in the expression of the heavy-metal tolerance characteristics. For the detoxification mechanism, required formation of the PC-complex can be strongly facilitated with Cd but inhibited by other elements such as Cu,As and B, which are not incorporated in the former PC-Cd complex.
(2) Transports of Cd and As have been associated with the thiol peptides such as PCs and GSH in literatures. However, their transports can be significantly affected by organic acids and some inorganic such as borate. Under conditions where different metals and anions are mixed in medium, their transport rates from roots to shoots are very different (e.g. Cd and Zn are much faster than Cu or As, but in a manner which is correlated with some organic ligands).Here, borate facilitates the Cd transport but inhibits As transport to shoot.
(3) Other major mono- and/or divalent metal ions reveal other unique mechanisms for transport and redistribution with ligands in plants, which taken together present new prospects in futurestudy.
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Research Products
(39 results)
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[Presentation] 植物の抗重力解明2012
Author(s)
保尊隆享, 神阪盛一郎, 高橋秀幸, 山下雅道, 北宅善昭, 飯田秀利, 村中俊哉, 橋本隆, 園部誠司, 谷本英一, 西谷和彦, 井上雅裕, 唐原一郎, 小竹敬久, 榊剛, 久米篤, 若林和幸, 曽我康一
Organizer
第28回宇宙利用シンポジウム
Place of Presentation
日本学術会議講堂会議室 L29
Year and Date
20120123-24
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