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Phytohormone synthesis pathways in sweet briar rose (Rosa rubiginosa L.) seedlings with high adaptation potential to soil drought
- Source :
- Plant Physiology and Biochemistry. 154:745-750
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The study aimed to determine the phytohormone profile of sweet briar rose (Rosa rubiginosa L.) seedlings and privileged synthesis pathways of individual hormones including gibberellins, cytokinins and auxins in response to long-term soil drought. We detected eight gibberellins, nine auxins and fifteen cytokinins. Abscisic acid (ABA) was also detected as a sensitive indicator of water stress. Thirty days of soil drought induced significant increase of ABA content and species-specific quantitative changes of other phytohormones. We established preferred synthesis pathways for three gibberellins, six auxins and eight cytokinins. Both an increase and decrease in gibberellin and cytokinin levels may modulate sweet briar's response to soil water shortage. In the case of auxins, induction of effective adaptation mechanisms to extremely dry environments is mostly triggered by their rising levels. Under drought stress, sweet briar seedlings increased their gibberellin pool at the expense of reducing the pool of cytokinins and auxins. This may indicate a specific role of gibberellins in adaptation mechanisms to long-term soil water deficit developed by sweet briar.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Cytokinins
Physiology
Plant Science
Biology
Rosa
01 natural sciences
Soil
03 medical and health sciences
chemistry.chemical_compound
Plant Growth Regulators
Auxin
Genetics
heterocyclic compounds
Abscisic acid
chemistry.chemical_classification
Indoleacetic Acids
fungi
Water stress
food and beverages
biology.organism_classification
Gibberellins
Droughts
Horticulture
030104 developmental biology
chemistry
Seedlings
Soil water
Cytokinin
Gibberellin
Adaptation
Rosa rubiginosa
Abscisic Acid
010606 plant biology & botany
Subjects
Details
- ISSN :
- 09819428
- Volume :
- 154
- Database :
- OpenAIRE
- Journal :
- Plant Physiology and Biochemistry
- Accession number :
- edsair.doi.dedup.....00e4e82340e6d21648c5e6c64e1c1a8e
- Full Text :
- https://doi.org/10.1016/j.plaphy.2020.06.018