Quantification of Mesophyll Resistance and Apoplastic Ascorbic Acid as an Antioxidant for Tropospheric Ozone in Durum Wheat (Triticum durumDesf. cv. Camacho)

The daily variations in cellular and apoplastic ascorbic acid and dehydroascorbic acid levels in a Mediterranean durum wheat cultivar (Triticum durumDesf. cv. Camacho) were analyzed in order to relate them to ambient ozone exposure and to subsequent stomatally absorbed ozone fluxes. The aim of this study is to prove the effectiveness and accuracy of a computer model (SODA) to calculate the mesophyll resistance (rm) to ozone uptake, the percentage of ozone detoxification by apoplastic ascorbic acid, and the ozone flux to the plasmalemma (Fm) in a Mediterranean durum wheat cultivar. These calculated factors were related to apoplastic ascorbic acid levels and to ambient ozone concentrations. These relationships were obtained with a view to explaining the detoxification of ozone by apoplastic ascorbic acid. Ozone detoxifications of up to 52% were found at midday, when maximum ozone concentrations and maximum apoplastic ascorbic acid are seen. Mesophyll resistance was minimum at this time, and ozone flux to the plasmalemma was reduced because of the reaction of ozone with apoplastic ascorbic acid.

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CDC Desire durum wheat

Canadian Journal of Plant Science ◽

10.4141/cjps2013-214 ◽

2013 ◽

Vol 93 (6) ◽

pp. 1265-1270 ◽

Cited By ~ 1

Author(s):

C. J. Pozniak

Keyword(s):

Disease Resistance ◽

Grain Yield ◽

Durum Wheat ◽

Wheat Cultivar ◽

Yield Potential ◽

Canadian Prairies ◽

Durum Wheat Cultivar ◽

Production Area ◽

Grain Cadmium

Pozniak, C. J. 2013. CDC Desire durum wheat. Can. J. Plant Sci. 93: 1265–1270. CDC Desire durum wheat is adapted to the durum production area of the Canadian prairies. This conventional height durum wheat cultivar combines high grain yield potential with high grain pigment and protein concentrations and low grain cadmium. CDC Desire is strong-strawed and is earlier maturing than all check cultivars. CDC Desire expresses disease resistance similar to the current check cultivars.

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CDC Carbide durum wheat

Canadian Journal of Plant Science ◽

10.4141/cjps-2015-045 ◽

2015 ◽

Vol 95 (5) ◽

pp. 1007-1012 ◽

Cited By ~ 2

Author(s):

C. J. Pozniak ◽

J. M. Clarke

Keyword(s):

Grain Yield ◽

Durum Wheat ◽

Wheat Cultivar ◽

Yield Potential ◽

Common Bunt ◽

Canadian Prairies ◽

Durum Wheat Cultivar ◽

Production Area ◽

End Use ◽

Wheat Blossom Midge

Pozniak, C. J. and Clarke, J. M. 2015. CDC Carbide durum wheat. Can. J. Plant Sci. 95: 1007–1012. CDC Carbide durum wheat is adapted to the durum production area of the Canadian prairies. This conventional-height durum wheat cultivar combines high grain yield potential with high grain pigment and protein concentrations, and low grain cadmium. CDC Carbide carries the Sm1 gene conferring resistance to the Orange Wheat Blossom Midge [Sitodiplosis modellana (Gehin)]. CDC Carbide is resistant to prevalent races of leaf, stem and stripe rust, and common bunt, and expresses end-use quality suitable for the Canada Western Amber Durum class.

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Plenty Durum wheat

Canadian Journal of Plant Science ◽

10.4141/cjps91-069 ◽

1991 ◽

Vol 71 (2) ◽

pp. 501-503 ◽

Cited By ~ 1

Author(s):

D. R. Knott

Keyword(s):

Disease Resistance ◽

Durum Wheat ◽

Key Words ◽

Triticum Turgidum ◽

Wheat Cultivar ◽

Durum Wheat Cultivar ◽

Cultivar Description

Plenty durum wheat (Triticum turgidum L.) is a high-yielding, moderately late durum wheat that is eligible for the top grades of amber durum wheat. It has moderately tall, strong straw and is well-adapted to the drier areas of durum production. It is similar to other durum cultivars in disease resistance. Key words: Triticum turgidum, durum wheat, cultivar description

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Genetic analysis and mapping of adult plant resistance loci to leaf rust in durum wheat cultivar Bairds

Theoretical and Applied Genetics ◽

10.1007/s00122-016-2839-3 ◽

2016 ◽

Vol 130 (3) ◽

pp. 609-619 ◽

Cited By ~ 11

Author(s):

Caixia Lan ◽

Bhoja R. Basnet ◽

Ravi P. Singh ◽

Julio Huerta-Espino ◽

Sybil A. Herrera-Foessel ◽

...

Keyword(s):

Genetic Analysis ◽

Durum Wheat ◽

Leaf Rust ◽

Plant Resistance ◽

Adult Plant Resistance ◽

Wheat Cultivar ◽

Adult Plant ◽

Durum Wheat Cultivar

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BANI SWEEF 4: A NEW DURUM WHEAT CULTIVAR

Journal of Plant Production ◽

10.21608/jpp.2008.170365 ◽

2008 ◽

Vol 33 (8) ◽

pp. 5509-5516

Author(s):

M. Abdel-Aleem et al.

Keyword(s):

Durum Wheat ◽

Wheat Cultivar ◽

Durum Wheat Cultivar

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CDC Credence durum wheat

Canadian Journal of Plant Science ◽

10.1139/cjps-2020-0092 ◽

2020 ◽

Vol 100 (6) ◽

pp. 720-724

Author(s):

C.J. Pozniak ◽

J.M. Clarke ◽

T.A. Haile

Keyword(s):

Grain Yield ◽

Durum Wheat ◽

Wheat Cultivar ◽

Yield Potential ◽

Common Bunt ◽

Canadian Prairies ◽

Durum Wheat Cultivar ◽

Production Area ◽

End Use ◽

Grain Cadmium

CDC Credence durum wheat is adapted to the durum production area of the Canadian prairies. This conventional height durum wheat cultivar combines high grain yield potential with high grain and pasta color and low grain cadmium. CDC Credence is resistant to leaf, stem, and stripe rusts and common bunt and demonstrated end-use quality suitable for the Canada Western Amber Durum class.

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Genetic and transcriptional dissection of resistance to Claviceps purpurea in the durum wheat cultivar Greenshank

Theoretical and Applied Genetics ◽

10.1007/s00122-020-03561-9 ◽

2020 ◽

Vol 133 (6) ◽

pp. 1873-1886 ◽

Cited By ~ 2

Author(s):

Anna Gordon ◽

Curt McCartney ◽

Ron E. Knox ◽

Nelzo Ereful ◽

Colin W. Hiebert ◽

...

Keyword(s):

Durum Wheat ◽

Production Systems ◽

Wheat Cultivar ◽

Major Effect ◽

Hybrid Seed Production ◽

Claviceps Purpurea ◽

Durum Wheat Cultivar ◽

Disproportionate Number ◽

Toxic Alkaloids ◽

The Uk

Abstract Key message Four QTL for ergot resistance (causal pathogen Claviceps purpurea) have been identified in the durum wheat cultivar Greenshank. Abstract Claviceps purpurea is a pathogen of grasses that infects flowers, replacing the seed with an ergot sclerotium. Ergot presents a significant problem to rye, barley and wheat, in particular hybrid seed production systems. In addition, there is evidence that the highly toxic alkaloids that accumulate within sclerotia can cross-contaminate otherwise healthy grain. Host resistance to C. purpurea is rare, few resistance loci having been identified. In this study, four ergot resistance loci are located on chromosomes 1B, 2A, 5A and 5B in the durum wheat cv. Greenshank. Ergot resistance was assessed through analysis of phenotypes associated with C. purpurea infection, namely the number of inoculated flowers that produced sclerotia, or resulted in ovary death but no sclerotia, the levels of honeydew produced, total sclerotia weight and average sclerotia weight and size per spike. Ergot testing was undertaken in Canada and the UK. A major effect QTL, QCp.aafc.DH-2A, was detected in both the Canadian and UK experiments and had a significant effect on honeydew production levels. QCp.aafc.DH-5B had the biggest influence on total sclerotia weight per spike. QCp.aafc.DH-1B was only detected in the Canadian experiments and QCp.aafc.DH-5A in the UK experiment. An RNASeq analysis, undertaken to identify wheat differentially expressed genes associated with different combinations of the four ergot resistance QTL, revealed a disproportionate number of DEGs locating to the QCp.aafc.DH-1B, QCp.aafc.DH-2A and QCp.aafc.DH-5B QTL intervals.

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