Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/393
Title: | Organic acid exudation associated with aluminium stress tolerance in triticale and wheat | Contributor(s): | Zhang, XG (author); Jessop, RS (author); Alter, D (author) | Publication Date: | 2003 | DOI: | 10.1071/AR03013 | Handle Link: | https://hdl.handle.net/1959.11/393 | Abstract: | Three triticale cultivars differing in aluminium (Al) stress response, together with 1 Al-tolerant wheat cultivar (Carazinho) and 1 Al-tolerant wheat line (ET3), were used to investigate the root exudation of organic acids during Al stress. The likely relationship of organic acid exudation with Al tolerance, as assessed by root regrowth in nutrient solutions, was also examined. An enzymatic assay was used to detect malate release from both root tips and the whole root system; high performance liquid chromatography (HPLC) was also used to measure the exudation of organic acids from Al-stressed root tips. The enzymatic assay revealed some associations between Al tolerance and malate efflux from Al-stressed wheat or triticale roots, although Al-tolerant triticale cvv. Tahara and 19th ITSN 70-4 released less malate than the Al-tolerant wheat. HPLC analysis indicated that malate and citrate were not the main exudates related to the different levels of Al tolerance in these triticale cultivars. A yet to be identified organic acid in 19th ITSN 70-4 showed significant concentration differences from 2 other cultivars tested. This study highlighted the importance and necessity of elucidating the biochemical mechanisms involved in Al stress tolerance in triticale and other crops. | Publication Type: | Journal Article | Source of Publication: | Australian Journal of Agricultural Research, 54(10), p. 979-985 | Publisher: | CSIRO Publishing | Place of Publication: | Australia | ISSN: | 1444-9838 0004-9409 1836-5795 1836-0947 |
Fields of Research (FoR) 2008: | 070306 Crop and Pasture Nutrition | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
---|---|
Appears in Collections: | Journal Article School of Environmental and Rural Science |
Files in This Item:
File | Description | Size | Format |
---|
SCOPUSTM
Citations
4
checked on Oct 5, 2024
Page view(s)
1,272
checked on Aug 3, 2024
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.