Hydrogen sulfide donor sodium hydrosulfide-improved heat tolerance in maize and involvement of proline
Copyright © 2013 Elsevier GmbH. All rights reserved.
| Publié dans: | Journal of plant physiology. - 1979. - 170(2013), 8 vom: 15. Mai, Seite 741-7 |
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| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2013
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| Accès à la collection: | Journal of plant physiology |
| Sujets: | Journal Article Research Support, Non-U.S. Gov't Sulfides Proline 9DLQ4CIU6V Proline Oxidase EC 1.5.3.- Ornithine-Oxo-Acid Transaminase EC 2.6.1.13 sodium bisulfide plus... |
| Résumé: | Copyright © 2013 Elsevier GmbH. All rights reserved. Hydrogen sulfide (H2S) has long been considered as a phytotoxin, but nowadays as a cell signal molecule involved in growth, development, and the acquisition of stress tolerance in higher plants. In the present study, hydrogen sulfide donor, sodium hydrosulfide (NaHS), pretreatment markedly improved germination percentage of seeds and survival percentage of seedlings of maize under heat stress, and alleviated an increase in electrolyte leakage of roots, a decrease in tissue vitality and an accumulation of malondialdehyde (MDA) in coleoptiles of maize seedlings. In addition, pretreatment of NaHS could improve the activity of Δ(1)-pyrroline-5-carboxylate synthetase (P5CS) and lower proline dehydrogenase (ProDH) activity, which in turn induced accumulation of endogenous proline in maize seedlings. Also, application of proline could enhance endogenous proline content, followed by mitigated accumulation of MDA and increased survival percentage of maize seedlings under heat stress. These results suggest that sodium hydrosulfide pretreatment could improve heat tolerance of maize and the acquisition of this heat tolerance may be involved in proline |
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| Description: | Date Completed 13.01.2014 Date Revised 10.03.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1618-1328 |
| DOI: | 10.1016/j.jplph.2012.12.018 |