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Genotypic performance of Australian durum under single and combined water-deficit and heat stress during reproduction.
Sci Rep 2019; 9(1):14986SR

Abstract

In Mediterranean environments, water deficiency and heat during reproduction severely limit cereal crop production. Our research investigated the effects of single and combined pre-anthesis water-deficit stress and post-anthesis heat stress in ten Australian durum genotypes, providing a systematic evaluation of stress response at the molecular, physiological, grain quality and yield level. We studied leaf physiological traits at different reproductive stages, evaluated the grain yield and quality, and the associations among them. We profiled the expression dynamics of two durum microRNAs and their protein-coding targets (auxin response factors and heat shock proteins) involved in stress adaptation. Chlorophyll content, stomatal conductance and leaf relative water content were mostly reduced under stress, however, subject to the time-point and genotype. The influence of stress on grain traits (e.g., protein content) also varied considerably among the genotypes. Significant positive correlations between the physiological traits and the yield components could be used to develop screening strategies for stress improvement in breeding. Different expression patterns of stress-responsive microRNAs and their targets in the most stress-tolerant and most stress-sensitive genotype provided some insight into the complex defense molecular networks in durum. Overall, genotypic performance observed indicates that different stress-coping strategies are deployed by varieties under various stresses.

Authors+Show Affiliations

School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA, Australia. haipei.liu@adelaide.edu.au.School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA, Australia.School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA, Australia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31628402

Citation

Liu, Haipei, et al. "Genotypic Performance of Australian Durum Under Single and Combined Water-deficit and Heat Stress During Reproduction." Scientific Reports, vol. 9, no. 1, 2019, p. 14986.
Liu H, Able AJ, Able JA. Genotypic performance of Australian durum under single and combined water-deficit and heat stress during reproduction. Sci Rep. 2019;9(1):14986.
Liu, H., Able, A. J., & Able, J. A. (2019). Genotypic performance of Australian durum under single and combined water-deficit and heat stress during reproduction. Scientific Reports, 9(1), p. 14986. doi:10.1038/s41598-019-49871-x.
Liu H, Able AJ, Able JA. Genotypic Performance of Australian Durum Under Single and Combined Water-deficit and Heat Stress During Reproduction. Sci Rep. 2019 Oct 18;9(1):14986. PubMed PMID: 31628402.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Genotypic performance of Australian durum under single and combined water-deficit and heat stress during reproduction. AU - Liu,Haipei, AU - Able,Amanda J, AU - Able,Jason A, Y1 - 2019/10/18/ PY - 2019/07/03/received PY - 2019/08/29/accepted PY - 2019/10/20/entrez PY - 2019/10/20/pubmed PY - 2019/10/20/medline SP - 14986 EP - 14986 JF - Scientific reports JO - Sci Rep VL - 9 IS - 1 N2 - In Mediterranean environments, water deficiency and heat during reproduction severely limit cereal crop production. Our research investigated the effects of single and combined pre-anthesis water-deficit stress and post-anthesis heat stress in ten Australian durum genotypes, providing a systematic evaluation of stress response at the molecular, physiological, grain quality and yield level. We studied leaf physiological traits at different reproductive stages, evaluated the grain yield and quality, and the associations among them. We profiled the expression dynamics of two durum microRNAs and their protein-coding targets (auxin response factors and heat shock proteins) involved in stress adaptation. Chlorophyll content, stomatal conductance and leaf relative water content were mostly reduced under stress, however, subject to the time-point and genotype. The influence of stress on grain traits (e.g., protein content) also varied considerably among the genotypes. Significant positive correlations between the physiological traits and the yield components could be used to develop screening strategies for stress improvement in breeding. Different expression patterns of stress-responsive microRNAs and their targets in the most stress-tolerant and most stress-sensitive genotype provided some insight into the complex defense molecular networks in durum. Overall, genotypic performance observed indicates that different stress-coping strategies are deployed by varieties under various stresses. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/31628402/Genotypic_performance_of_Australian_durum_under_single_and_combined_water-deficit_and_heat_stress_during_reproduction L2 - http://dx.doi.org/10.1038/s41598-019-49871-x DB - PRIME DP - Unbound Medicine ER -
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