A balancing act: how plants integrate nitrogen and water signals
| Autor: | Viviana Araus, Gloria M. Coruzzi, José M. Alvarez, Amelia Henry, Joseph Swift |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Crops Agricultural Physiology Nitrogen Systems biology Plant Science drought Biology 01 natural sciences 03 medical and health sciences Molecular level Plant traits Stomatal aperture Review Papers Ecology AcademicSubjects/SCI01210 fungi food and beverages Water systems biology Agriculture Agronomy Droughts 030104 developmental biology climate change Research strategies signaling 010606 plant biology & botany |
| Zdroj: | Journal of Experimental Botany |
| ISSN: | 1460-2431 0022-0957 |
| Popis: | We discuss how both nitrogen and water availability combine to impact plant biological responses at the molecular, transcriptomic, and physiological level. Nitrogen (N) and water (W) are crucial inputs for plant survival as well as costly resources for agriculture. Given their importance, the molecular mechanisms that plants rely on to signal changes in either N or W status have been under intense scrutiny. However, how plants sense and respond to the combination of N and W signals at the molecular level has received scant attention. The purpose of this review is to shed light on what is currently known about how plant responses to N are impacted by W status. We review classic studies which detail how N and W combinations have both synergistic and antagonistic effects on key plant traits, such as root architecture and stomatal aperture. Recent molecular studies of N and W interactions show that mutations in genes involved in N metabolism affect drought responses, and vice versa. Specifically, perturbing key N signaling genes may lead to changes in drought-responsive gene expression programs, which is supported by a meta-analysis we conduct on available transcriptomic data. Additionally, we cite studies that show how combinatorial transcriptional responses to N and W status might drive crop phenotypes. Through these insights, we suggest research strategies that could help to develop crops adapted to marginal soils depleted in both N and W, an important task in the face of climate change. |
| Databáze: | OpenAIRE |
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