Claim · model-written summary
Azolla caroliniana chilled for 2 or 3 d and then transferred to normal temperature grew faster than control plants.
- Taxon
- Azolla caroliniana
Azolla carolinianae0 - Treatment
- previously chilled for 2 or 3 de1
- Outcome
- growth ratese1
- Direction
- highere1
- Qualifier
- when transferred to normal temperaturee1
- Comparator
- control plantse1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azolla caroliniana”
e1“Plants previously chilled for 2 or 3 d exhibited higher growth rates when transferred to normal temperature than either the control plants or those previously chilled for 5 or 7 d”
Title
Effect of chilling on growth and nitrogen assimilation in Azolla caroliniana
E. M. Mostafa; A. M. A. Hassan Biologia Plantarum 2006. doi:10.1007/s10535-006-0100-7
Other claims from this paper (12)
- Intervention effect Previous chilling decreased the growth rate of Azolla caroliniana.
- Intervention effect Nitrogen supplementation increased the growth rate of chilled and nonchilled Azolla caroliniana relative to N-free medium.
- Association In the first 4 d of recovery, the N2-fixation rate of nonchilled Azolla caroliniana was about 4-fold that of previously chilled plants.
- Observation During recovery, N2-fixation rate increased in both chilled and nonchilled Azolla caroliniana up to 12 d, after which both rates were similar.
- Intervention effect Nitrate reductase and nitrite reductase activities in control Azolla caroliniana were higher than in plants chilled for 7 d.
- Observation Nitrate reductase and nitrite reductase activities increased up to 12 d in chilled and nonchilled Azolla caroliniana, then decreased.
- Observation Total protein content of chilled and nonchilled Azolla caroliniana increased up to 12 d, then decreased.
- Intervention effect Under all treatments, the values were higher in nonchilled than in previously chilled Azolla caroliniana.
- Intervention effect Under all treatments, the values were higher with N-source than without it in Azolla caroliniana.
- Association The N-source in the medium counteracts the effect of chilling injury on Azolla caroliniana, particularly during prolonged recovery.
- Mechanism Increased plant growth in Azolla caroliniana may be related to increased chlorophyll, sucrose and reducing sugar contents from increased photosynthetic capacity.
- Mechanism The decrease in growth rate of chilled Azolla caroliniana may be related to disturbance of Anabaena azollae cells.