Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues

Mathias Wiegmann, Andreas Maurer, Anh Pham, Timothy J. March, Ayed Al-Abdallat, William T. B. Thomas, Hazel J. Bull, Mohammed Shahid, Jason Eglinton, Michael Baum, Andrew J. Flavell, Mark Tester, Klaus Pillen (Lead / Corresponding author)

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Abstract

Since the dawn of agriculture, crop yield has always been impaired through abiotic stresses. In a field trial across five locations worldwide, we tested three abiotic stresses, nitrogen deficiency, drought and salinity, using HEB-YIELD, a selected subset of the wild barley nested association mapping population HEB-25. We show that barley flowering time genes Ppd-H1, Sdw1, Vrn-H1 and Vrn-H3 exert pleiotropic effects on plant development and grain yield. Under field conditions, these effects are strongly influenced by environmental cues like day length and temperature. For example, in Al-Karak, Jordan, the day length-sensitive wild barley allele of Ppd-H1 was associated with an increase of grain yield by up to 30% compared to the insensitive elite barley allele. The observed yield increase is accompanied by pleiotropic effects of Ppd-H1 resulting in shorter life cycle, extended grain filling period and increased grain size. Our study indicates that the adequate timing of plant development is crucial to maximize yield formation under harsh environmental conditions. We provide evidence that wild barley alleles, introgressed into elite barley cultivars, can be utilized to support grain yield formation. The presented knowledge may be transferred to related crop species like wheat and rice securing the rising global food demand for cereals.

Original languageEnglish
Article number6397
Pages (from-to)1-16
Number of pages16
JournalScientific Reports
Volume9
DOIs
Publication statusPublished - 25 Apr 2019

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Hordeum
Cues
Genes
Plant Development
Alleles
Jordan
Droughts
Salinity
Life Cycle Stages
Agriculture
Triticum
Nitrogen
Food
Temperature
Population

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Wiegmann, M., Maurer, A., Pham, A., March, T. J., Al-Abdallat, A., Thomas, W. T. B., ... Pillen, K. (2019). Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues. Scientific Reports, 9, 1-16. [6397]. https://doi.org/10.1038/s41598-019-42673-1
Wiegmann, Mathias ; Maurer, Andreas ; Pham, Anh ; March, Timothy J. ; Al-Abdallat, Ayed ; Thomas, William T. B. ; Bull, Hazel J. ; Shahid, Mohammed ; Eglinton, Jason ; Baum, Michael ; Flavell, Andrew J. ; Tester, Mark ; Pillen, Klaus. / Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues. In: Scientific Reports. 2019 ; Vol. 9. pp. 1-16.
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title = "Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues",
abstract = "Since the dawn of agriculture, crop yield has always been impaired through abiotic stresses. In a field trial across five locations worldwide, we tested three abiotic stresses, nitrogen deficiency, drought and salinity, using HEB-YIELD, a selected subset of the wild barley nested association mapping population HEB-25. We show that barley flowering time genes Ppd-H1, Sdw1, Vrn-H1 and Vrn-H3 exert pleiotropic effects on plant development and grain yield. Under field conditions, these effects are strongly influenced by environmental cues like day length and temperature. For example, in Al-Karak, Jordan, the day length-sensitive wild barley allele of Ppd-H1 was associated with an increase of grain yield by up to 30{\%} compared to the insensitive elite barley allele. The observed yield increase is accompanied by pleiotropic effects of Ppd-H1 resulting in shorter life cycle, extended grain filling period and increased grain size. Our study indicates that the adequate timing of plant development is crucial to maximize yield formation under harsh environmental conditions. We provide evidence that wild barley alleles, introgressed into elite barley cultivars, can be utilized to support grain yield formation. The presented knowledge may be transferred to related crop species like wheat and rice securing the rising global food demand for cereals.",
author = "Mathias Wiegmann and Andreas Maurer and Anh Pham and March, {Timothy J.} and Ayed Al-Abdallat and Thomas, {William T. B.} and Bull, {Hazel J.} and Mohammed Shahid and Jason Eglinton and Michael Baum and Flavell, {Andrew J.} and Mark Tester and Klaus Pillen",
note = "Tis work was fnancially supported by the German Research Foundation (DFG) via the priority program 1530: ‘Flowering time control - from natural variation to crop improvement’ with grants Pi339/7-1 and Pi339/7-2) and via ERA-NET for Coordinating Action in Plant Sciences (ERA-CAPS) grant Pi339/8-1. Funding from King Abdullah University of Science and Technology (KAUST) is also gratefully acknowledged.",
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Wiegmann, M, Maurer, A, Pham, A, March, TJ, Al-Abdallat, A, Thomas, WTB, Bull, HJ, Shahid, M, Eglinton, J, Baum, M, Flavell, AJ, Tester, M & Pillen, K 2019, 'Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues', Scientific Reports, vol. 9, 6397, pp. 1-16. https://doi.org/10.1038/s41598-019-42673-1

Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues. / Wiegmann, Mathias; Maurer, Andreas; Pham, Anh; March, Timothy J.; Al-Abdallat, Ayed; Thomas, William T. B.; Bull, Hazel J.; Shahid, Mohammed; Eglinton, Jason; Baum, Michael; Flavell, Andrew J.; Tester, Mark; Pillen, Klaus (Lead / Corresponding author).

In: Scientific Reports, Vol. 9, 6397, 25.04.2019, p. 1-16.

Research output: Contribution to journalArticle

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AU - Thomas, William T. B.

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AU - Shahid, Mohammed

AU - Eglinton, Jason

AU - Baum, Michael

AU - Flavell, Andrew J.

AU - Tester, Mark

AU - Pillen, Klaus

N1 - Tis work was fnancially supported by the German Research Foundation (DFG) via the priority program 1530: ‘Flowering time control - from natural variation to crop improvement’ with grants Pi339/7-1 and Pi339/7-2) and via ERA-NET for Coordinating Action in Plant Sciences (ERA-CAPS) grant Pi339/8-1. Funding from King Abdullah University of Science and Technology (KAUST) is also gratefully acknowledged.

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