Claim · model-written summary
Under all treatments, the values were higher in nonchilled than in previously chilled Azolla caroliniana.
- Taxon
- Azolla caroliniana
Azolla carolinianae0 - Treatment
- previously chilled onese1
- Outcome
- the valuese1
- Direction
- highere1
- Comparator
- nonchilled plantse1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azolla caroliniana”
e1“Under all treatments, the values were higher in nonchilled plants than in those previously chilled ones and were also higher in presence of N than in its absence”
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 Azolla caroliniana chilled for 2 or 3 d and then transferred to normal temperature grew faster than control plants.
- 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 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.