Abstract
Replicated wheat (Triticum aestivum L.) cultivar trials were performed in commercial fields in moderate to low rainfall zones at Wagga Wagga (572 mm) and Condobolin (449 mm) NSW in 2014 and 2015. At each experimental site, crop and/or weed growth were monitored at selected growth stages including tillering, vegetative, grain filling, harvest and post-harvest to the crop. In addition, shoots, roots, rhizoplane and bulk rhizosphere soil samples were collected. All shoot and root samples were extracted in methanol using an automated Buchi high pressure extractor while soil samples were extracted using a rotary shaking method. Extracts were profiled for unique secondary plant products including benzoxazinoids (BXs) using liquid chromatography coupled to mass spectrometry.
Metabolic profiling of wheat cultivar shoots, roots, and soils resulted in detection of up to 14 BXs including BX glycosides and other metabolites of interest. Both qualitative and quantitative differences in BXs were observed and were cultivar and location dependent. Plant part and rhizosphere location (distance from root) also impacted BX concentration. Additional metabolic profiling is now underway and will provide crucial information regarding crop metabolism and biosynthesis of metabolites associated with weed suppression in commercial wheat cultivars.
Metabolic profiling of wheat cultivar shoots, roots, and soils resulted in detection of up to 14 BXs including BX glycosides and other metabolites of interest. Both qualitative and quantitative differences in BXs were observed and were cultivar and location dependent. Plant part and rhizosphere location (distance from root) also impacted BX concentration. Additional metabolic profiling is now underway and will provide crucial information regarding crop metabolism and biosynthesis of metabolites associated with weed suppression in commercial wheat cultivars.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 20th Australasian weeds conference |
| Editors | Rod Randall, Sandy Lloyd, Catherine Borger |
| Place of Publication | Perth |
| Publisher | Weed Society of Western Australia |
| Pages | 353-357 |
| Number of pages | 5 |
| ISBN (Electronic) | 9780646960319 |
| Publication status | Published - 2016 |
| Event | 20th Australasian Weeds Conference (2016) - Pan Pacific Hotel, Perth, Australia Duration: 11 Sept 2016 → 15 Sept 2016 https://web.archive.org/web/20160316141153/http://www.20awc.org.au/ (Conference website) http://caws.org.nz/old-site/awc_contents.php?yr=2016 (Conference proceedings) |
Conference
| Conference | 20th Australasian Weeds Conference (2016) |
|---|---|
| Abbreviated title | Science, Community and Food Security: the Weed Challenge |
| Country/Territory | Australia |
| City | Perth |
| Period | 11/09/16 → 15/09/16 |
| Other | In 2016, the Council of Australasian Weed Societies (CAWS), along with local hosts the Weeds Society of Western Australia, are celebrating the 20th Australasian Weeds Conference. The biennial conference is being held at the Pan Pacific in Perth, Western Australia which has traditionally been one of the highest attended AWC's, and over 300 delegates are expected from across Australasia. Delegates will come together to meet-up with peers, engage with industry sponsors, and to listen and participate in presentations and field trips on a variety of topics including: Herbicide Resistance Weeds of National Significance Agricultural weeds Environmental weeds Biological control of weeds Modelling and new technologies to manage weeds Legislation, regulation and policy to manage weed |
| Internet address |
|