Claim · model-written summary
During recovery, N2-fixation rate increased in both chilled and nonchilled Azolla caroliniana up to 12 d, after which both rates were similar.
- Taxon
- Azolla caroliniana
Azolla carolinianae0 - Outcome
- rate of N2-fixatione6
- Direction
- increasede6
- Qualifier
- up to 12 de6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azolla caroliniana”
e6“During the recovery the rate of N2-fixation increased in both chilled and nonchilled plants up to 12 d after which both rates were similar”
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.
- 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.