Abstract
One of the major environmental stress factors that affect root growth is salinity. Arabidopsis thaliana, a glycophyte, shows halotropism, whereby it alters the direction of root growth in a non-gravitropic pattern to evade high soil salinity. Asymmetric auxin distribution regulated by the relocation of auxin-efflux carrier proteins is a key cellular event in the halotropic response. However, there are no reports of halotropism in halophytes. Here, we investigated root growth traits in Mesembryanthemum crystallinum, ice plant, under high salinity conditions. We hypothesized that ice plant roots would show halotropic responses different from those of Arabidopsis. Notably, similar to halotropism observed in Arabidopsis, ice plant roots showed continuous root bending under salinity stress. However, the root elongation rate did not change in ice plants. Expression analyses of several genes revealed that auxin transport might be partially involved in ice plant halotropism. This study enhances our understanding of halophyte root adaptation to high salinity stress.
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Claims 3
Claim · model-written summary
Ice plant roots showed continuous root bending under salinity stress, similar to halotropism in Arabidopsis.
- Taxon
- Mesembryanthemum crystallinum
Mesembryanthemum crystallinume0 - Treatment
- salinity stresse3
- Outcome
- root bendinge3
- Qualifier
- continuouse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Here, we investigated root growth traits in Mesembryanthemum crystallinum, ice plant, under high salinity conditions”
e3“ice plant roots showed continuous root bending under salinity stress”
Claim · model-written summary
Root elongation rate of ice plants did not change under high salinity.
- Taxon
- Mesembryanthemum crystallinumMesembryanthemum crystallinume0
- Treatment
- high salinitye0
- Outcome
- root elongation ratee1
- Direction
- did not changee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Here, we investigated root growth traits in Mesembryanthemum crystallinum, ice plant, under high salinity conditions”
e1“However, the root elongation rate did not change in ice plants”
Claim · model-written summary
Auxin transport might be partially involved in ice plant halotropism.
Verbatim
e2“Expression analyses of several genes revealed that auxin transport might be partially involved in ice plant halotropism”
The same questions in other papers
salinity · growth · Mesembryanthemum crystallinum (common iceplant)Results agree
2 papers in the same direction as this paper
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.