Ryan, Annette C and Hewitt, C Nicholas and Possell, Malcolm and Vickers, Claudia E and Purnell, Anna and Mullineaux, Philip M and Davies, William J and Dodd, Ian C (2014) Isoprene emission protects photosynthesis but reduces plant productivity during drought in transgenic tobacco ( <i>Nicotiana tabacum</i> ) plants. New Phytologist, 201 (1). pp. 205-216. DOI https://doi.org/10.1111/nph.12477
Ryan, Annette C and Hewitt, C Nicholas and Possell, Malcolm and Vickers, Claudia E and Purnell, Anna and Mullineaux, Philip M and Davies, William J and Dodd, Ian C (2014) Isoprene emission protects photosynthesis but reduces plant productivity during drought in transgenic tobacco ( <i>Nicotiana tabacum</i> ) plants. New Phytologist, 201 (1). pp. 205-216. DOI https://doi.org/10.1111/nph.12477
Ryan, Annette C and Hewitt, C Nicholas and Possell, Malcolm and Vickers, Claudia E and Purnell, Anna and Mullineaux, Philip M and Davies, William J and Dodd, Ian C (2014) Isoprene emission protects photosynthesis but reduces plant productivity during drought in transgenic tobacco ( <i>Nicotiana tabacum</i> ) plants. New Phytologist, 201 (1). pp. 205-216. DOI https://doi.org/10.1111/nph.12477
Abstract
Summary: Isoprene protects the photosynthetic apparatus of isoprene-emitting plants from oxidative stress. The role of isoprene in the response of plants to drought is less clear. Water was withheld from transgenic isoprene-emitting and non-emitting tobacco (Nicotiana tabacum) plants, to examine: the response of isoprene emission to plant water deficit; a possible relationship between concentrations of the drought-induced phytohormone abscisic acid (ABA) and isoprene; and whether isoprene affected foliar reactive oxygen species (ROS) and lipid peroxidation levels. Isoprene emission did not affect whole-plant water use, foliar ABA concentration or leaf water potential under water deficit. Compared with well-watered controls, droughted non-emitting plants significantly increased ROS content (31-46%) and lipid peroxidation (30-47%), concomitant with decreased operating and maximum efficiencies of photosystem II photochemistry and lower leaf and whole-plant water use efficiency (WUE). Droughted isoprene-emitting plants showed no increase in ROS content or lipid peroxidation relative to well-watered controls, despite isoprene emission decreasing before leaf wilting. Although isoprene emission protected the photosynthetic apparatus and enhanced leaf and whole-plant WUE, non-emitting plants had 8-24% more biomass under drought, implying that isoprene emission incurred a yield penalty. © 2013 New Phytologist Trust.
Item Type: | Article |
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Uncontrolled Keywords: | abscisic acid (ABA); drought; hydrogen peroxide; isoprene; lipid peroxidation; Nicotiana tabacum (tobacco); oxidative stress; water use efficiency |
Subjects: | Q Science > QK Botany Q Science > QP Physiology S Agriculture > SB Plant culture |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 08 Nov 2013 14:52 |
Last Modified: | 18 Aug 2022 11:04 |
URI: | http://repository.essex.ac.uk/id/eprint/8213 |
Available files
Filename: Ryan et al New Phytol isoprene.pdf