Feeling the heat: developmental and molecular responses of wheat and barley to high ambient temperatures.

Journal of Experimental Botany
Catherine N Jacott, Scott A Boden

Abstract

The increasing demand for global food security in the face of a warming climate is leading researchers to investigate the physiological and molecular responses of cereals to rising ambient temperatures. Wheat and barley are temperate cereals whose yields are adversely affected by high ambient temperatures, with each 1 °C increase above optimum temperatures reducing productivity by 5-6%. Reproductive development is vulnerable to high-temperature stress, which reduces yields by decreasing grain number and/or size and weight. In recent years, analysis of early inflorescence development and genetic pathways that control the vegetative to floral transition have elucidated molecular processes that respond to rising temperatures, including those involved in the vernalization- and photoperiod-dependent control of flowering. In comparison, our understanding of genes that underpin thermal responses during later developmental stages remains poor, thus highlighting a key area for future research. This review outlines the responses of developmental genes to warmer conditions and summarizes our knowledge of the reproductive traits of wheat and barley influenced by high temperatures. We explore ways in which recent advances in wheat and barle...Continue Reading

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Citations

Jun 30, 2021·Nature Plants·Gang LiDabing Zhang
Jul 21, 2021·Journal of Experimental Botany·Myrthe PraatMartijn van Zanten
Aug 28, 2021·International Journal of Molecular Sciences·Tibor JandaÉva Darkó
Oct 5, 2021·Advances in Nutrition·Richard D SembaKlaus Kraemer
Oct 30, 2021·Frontiers in Genome Editing·Tom LawrensonWendy Harwood

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