Photosynthetic characteristics and the response of stomata to environmental determinants and ABA in Selaginella bryopteris, a resurrection spike moss species
Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.
| Publié dans: | Plant science : an international journal of experimental plant biology. - 1985. - 191-192(2012) vom: 15. Aug., Seite 43-52 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2012
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| Accès à la collection: | Plant science : an international journal of experimental plant biology |
| Sujets: | Journal Article Research Support, Non-U.S. Gov't Gases Carbon Dioxide 142M471B3J Abscisic Acid 72S9A8J5GW |
| Résumé: | Copyright © 2012 Elsevier Ireland Ltd. All rights reserved. Selaginella bryopteris is a spike-moss lycophyte species with resurrection capability. These plants have small sized stomata that occur in higher density than in other fern species. The diurnal gas-exchange studies under natural conditions showed a bell shaped net photosynthesis curve. The effective quantum yield of PSII (ΔF/F(m')) showed an inverse relationship with light and recovered to its maximum at sunset. This suggests that there was a complete recovery of PSII efficiency during the late evening hours. S. bryopteris displayed broad temperature optima for net photosynthesis from 28 °C to 37 °C. The stomatal sensitivity in response to vapor pressure deficit (VPD), was maximum at 25 °C temperature while at temperatures from 30 to 35 °C it was low. Our study demonstrates that S. bryopteris plants show a very poor mechanism for its stomatal regulation in response to high light, high temperature, high VPD, high CO₂ and to ABA treatment. At the same time they show a high stomatal conductance leading to unrestricted rates of transpiration and a lack of capacity to optimize water use efficiency (WUE) |
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| Description: | Date Completed 11.01.2013 Date Revised 30.09.2020 published: Print-Electronic ErratumIn: Plant Sci. 2013 Jun;207:1 Citation Status MEDLINE |
| ISSN: | 1873-2259 |
| DOI: | 10.1016/j.plantsci.2012.04.011 |