Morphological and physiological changes in Artemisia selengensis under drought and after rehydration recovery
Changes in global climate and precipitation patterns have exacerbated the existing uneven distribution of water, causing many plants to face the alternate situation of drought and water flooding. We studied the growth and physiological response of the wetland plant Artemisia selengensis to drought a...
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Published in | Frontiers in plant science Vol. 13; p. 851942 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
05.08.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Changes in global climate and precipitation patterns have exacerbated the existing uneven distribution of water, causing many plants to face the alternate situation of drought and water flooding. We studied the growth and physiological response of the wetland plant
Artemisia selengensis
to drought and rehydration. In this study,
Artemisia selengensis
seedlings were subjected to 32.89% (SD), 47.36 % (MD), 60.97% (MID), and 87.18 % (CK) field water holding capacity for 70 days, followed by 14 days of rehydration. The results showed that drought inhibited the increase of plant height, basal diameter, and biomass accumulation under SD and MD, but the root shoot ratio (R/S) increased. Drought stress also decreased the content of total chlorophyll (Chl), chlorophyll a (Chl-a), chlorophyll b (Chl-b), and carotenoid (Car). Soluble sugar (SS) and proline (Pro) were accumulated rapidly under drought, and the relative water content (RWC) of leaves was kept at a high level of 80%. After rehydration, the plant height, basal diameter, biomass, and R/S ratio could not be recovered under SD and MD, but these indicators were completely recovered under MID. The RWC, Chl, Chl-a, Chl-b, Car, and osmotic substances were partially or completely recovered. In conclusion,
Artemisia selengensis
not only can improve drought resistance by increasing the R/S ratio and osmotic substances but also adopt the compensatory mechanism during rehydration. It is predictable that
A. selengensis
may benefit from possible future aridification of wetlands and expand population distribution. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by: Urs Feller, University of Bern, Switzerland Reviewed by: Parviz Ehsanzadeh, Isfahan University of Technology, Iran; Hermann Restrepo-Diaz, National University of Colombia, Colombia; Linda Yuya Gorim, University of Alberta, Canada; Maria Celeste Pereira Dias, University of Coimbra, Portugal This article was submitted to Plant Abiotic Stress, a section of the journal Frontiers in Plant Science |
ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2022.851942 |