Journal article
Water deficits in wheat: Fructan exohydrolase (1-FEH) mRNA expression and relationship to soluble carbohydrate concentrations in two varieties
New Phytologist, Vol.181(4), pp.843-850
2009
Abstract
Terminal drought is a risk for wheat production in many parts of the world. Robust physiological traits for resilience would enhance the preselection of breeding lines in drought-prone areas. • Three pot experiments were undertaken to characterize stem water-soluble carbohydrate (WSC), fructan exohydrolase expression, grain filling and leaf gas exchange in wheat (Triticum aestivum) varieties, Kauz and Westonia, which are considered to be drought-tolerant. • Water deficit accelerated the remobilization of stem WSC in Westonia but not in Kauz. The profile of WSC accumulation and loss was negatively correlated with the mRNA concentration of 1-FEH, especially 1-FEH w3 (1-FEH-6B). Under water deficit, Westonia showed lower concentrations of WSC than Kauz but did not show a corresponding drop in grain yield. • The results from pot experiments suggest that stem WSC concentration is not, on its own, a reliable criterion to identify potential grain yield in wheat exposed to water deficits during grain filling. The expression of 1-FEH w3 may provide a better indicator when linked to osmotic potential and green leaf retention, and this requires validation in field-grown plants.
Details
- Title
- Water deficits in wheat: Fructan exohydrolase (1-FEH) mRNA expression and relationship to soluble carbohydrate concentrations in two varieties
- Authors/Creators
- J. Zhang (Author/Creator)B. Dell (Author/Creator)E. Conocono (Author/Creator)I. Waters (Author/Creator)T. Setter (Author/Creator)R. Appels (Author/Creator)
- Publication Details
- New Phytologist, Vol.181(4), pp.843-850
- Publisher
- Blackwell Publishing
- Identifiers
- 991005544603607891
- Copyright
- © The Authors (2008)
- Murdoch Affiliation
- Centre for Comparative Genomics; School of Biological Sciences and Biotechnology
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.424 Crop Yield Optimization
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science