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Abstract
Remobilisation and Fate of Sulphur in Indian Mustard (Brassica juncea. L)
Proceedings, Vol.36(1), 26
The Third International Tropical Agriculture Conference (TROPAG 2019), 3rd (Brisbane, Australia, 11/11/2019–13/11/2019)
12/2019
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Abstract
Understanding the basis of sulphur (S) use efficiency in higher S requiring crops such as brassicas can help develop more cost-effective cultivars. Oleriferous brassicas sequester reduced S in the mature seeds mainly as secondary metabolite-glucosinolate (GSL) and seed storage proteins (SSP). Glucosinolates have a wide range of positive aspects in food production, human nutrition and plant defence, and SSPs are a potential source of high quality vegetable proteins for human and livestock consumption. We carried out a developmental S audit to establish the net fluxes of S in two lines of B. juncea mustard where the level of seed GSL differed. We quantified S pools (sulphate, GSL and total S) in different organs at multiple growth stages until maturity. We have established that leaf S components accumulated as primary S sinks at early developmental stages in condiment type B. juncea become remobilised as a secondary S source to meet the demand of GSL as the dominant seed S sink at maturity. Our evidence for S remobilisation from leaves as primary S sink suggests that up or down regulation of signalling molecules which mediate between secondary S sinks and sources may help modulate economically valuable S compounds in brassica seed.
Details
- Title
- Remobilisation and Fate of Sulphur in Indian Mustard (Brassica juncea. L)
- Creators
- Priyakshee Borpatragohain - Southern Cross UniversityGraham J. King - Southern Cross UniversityTerry Rose - Southern Cross UniversityLei Liu - Southern Cross UniversityTobias Kretzschmar - Southern Cross UniversityBronwyn J. Barkla - Southern Cross UniversityCarolyn Raymond - Southern Cross University
- Publication Details
- Proceedings, Vol.36(1), 26
- Conference
- The Third International Tropical Agriculture Conference (TROPAG 2019), 3rd (Brisbane, Australia, 11/11/2019–13/11/2019)
- Publisher
- MDPI AG
- Grant note
- Australian Research Council, Linkage LP170101062, Australian Mustard Oil Pty. Ltd.
- Identifiers
- 991013329885102368
- Copyright
- © 2019 by the authors.
- Academic Unit
- Office of the Vice Chancellor; Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Abstract