Caine, R.S. orcid.org/0000-0002-6480-218X, Yin, X., Sloan, J. orcid.org/0000-0003-0334-3722 et al. (12 more authors) (2019) Rice with reduced stomatal density conserves water and has improved drought tolerance under future climate conditions. New Phytologist, 221 (1). pp. 371-384. ISSN 0028-646X
Abstract
Much of humanity relies on rice (Oryza sativa) as a food source, but cultivation is water intensive and the crop is vulnerable to drought and high temperatures. Under climate change, periods of reduced water availability and high temperature are expected to become more frequent, leading to detrimental effects on rice yields.
We engineered the high-yielding rice cultivar ‘IR64’ to produce fewer stomata by manipulating the level of a developmental signal. We overexpressed the rice epidermal patterning factor OsEPF1, creating plants with substantially reduced stomatal density and correspondingly low stomatal conductance.
Low stomatal density rice lines were more able to conserve water, using c. 60% of the normal amount between weeks 4 and 5 post germination. When grown at elevated atmospheric CO2, rice plants with low stomatal density were able maintain their stomatal conductance and survive drought and high temperature (40°C) for longer than control plants. Low stomatal density rice gave equivalent or even improved yields, despite a reduced rate of photosynthesis in some conditions.
Rice plants with fewer stomata are drought tolerant and more conservative in their water use, and they should perform better in the future when climate change is expected to threaten food security.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | climate change; drought; epidermal pattering factor; heat stress; rice; stomata; water conservation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Molecular Biology and Biotechnology (Sheffield) |
Funding Information: | Funder Grant number H2020 Marie Sklodowska-Curie 700867 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Sep 2018 13:32 |
Last Modified: | 18 Apr 2024 14:00 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1111/nph.15344 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135359 |