Abstract
In low pH condition of soils (pH<5), Al is solubilized into a phytotoxic form Al(H2O)63+ and inhibits the plant root growth and development. Precisely, during low pH stress (e.g., pH 4.75), aluminum compound converts into its ionic form and becomes higher in level which is a limiting factor for plant root growth and seedling formation. Under aluminum (Al) toxic conditions, the organic acid transporters for example citrate and malate transporters in plasma membrane are involved in organic acid release and form non phytotoxic stable complexes with Al3+ in the rhizosphere. The study showed that, the cotton seedlings exhibited very sensitive phenotypes to low pH stress conditions due to high accumulation of ionic Al stress, the seedlings displayed retarded primary, secondary root growth and small cotyledons. These results indicated that cotton plants are susceptible to low pH condition.. As a whole without fine divisions the root system becomes corraloid in structure which will be having squat secondary roots. Plant has developed a natural defense mechanism in order to combat this unfavorable environment. Expression profile and Al complexation with organic acid exudates studies clearly revealed that both GhALMT1 and GhALS3 genes are involved in Al3+detoxification mechanisms. The remarkable expression was detected for GhALS3 under both low pH and aluminum stress condition in comparison to wild type untreated control whereas GhALMT1 expression was only activated under Al3+ stress condition. Our study, displayed enhanced citrate and malate excretion values in the wild type plants which are treated with Al and H+ stress. Thus, it can be clearly mentioned that GhALMT1 and GhALS3 is playing a significant role in low pHstress tolerance of cotton plant.
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Claims 8
Claim · model-written summary
Cotton seedlings under low pH stress showed retarded primary and secondary root growth.
- Taxon
- Cotton plants
Gossypium hirsutumt0 - Organ / stage
- roote0
- Treatment
- low pH stress conditionse0
- Outcome
- primary, secondary root growthe0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“cotton seedlings exhibited very sensitive phenotypes to low pH stress conditions due to high accumulation of ionic Al stress, the seedlings displayed retarded primary, secondary root growth and small cotyledons”
Claim · model-written summary
Cotton seedlings under low pH stress had small cotyledons.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Organ / stage
- cotyledonse0
- Treatment
- low pH stress conditionse0
- Outcome
- small cotyledonse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“cotton seedlings exhibited very sensitive phenotypes to low pH stress conditions due to high accumulation of ionic Al stress, the seedlings displayed retarded primary, secondary root growth and small cotyledons”
Claim · model-written summary
Cotton roots under low pH stress developed a corraloid structure with squat secondary roots.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Organ / stage
- root systeme0
- Outcome
- root system becomes corraloid in structure which will be having squat secondary rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“the root system becomes corraloid in structure which will be having squat secondary roots”
Claim · model-written summary
GhALMT1 was implicated in aluminum detoxification in cotton.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Gene
- GhALMT1e0
- Outcome
- Al3+detoxification mechanismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“both GhALMT1 and GhALS3 genes are involved in Al3+detoxification mechanisms”
Claim · model-written summary
GhALS3 was implicated in aluminum detoxification in cotton.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Gene
- GhALS3e0
- Outcome
- Al3+detoxification mechanismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“both GhALMT1 and GhALS3 genes are involved in Al3+detoxification mechanisms”
Claim · model-written summary
GhALS3 expression in cotton was elevated under both low pH and aluminum stress compared with untreated wild type control.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Treatment
- both low pH and aluminum stress conditione0
- Gene
- GhALS3e0
- Outcome
- expressione0
- Comparator
- wild type untreated controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“The remarkable expression was detected for GhALS3 under both low pH and aluminum stress condition in comparison to wild type untreated control”
Claim · model-written summary
GhALMT1 expression in cotton was activated only under aluminum stress.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Treatment
- Al3+ stress conditione0
- Gene
- GhALMT1e0
- Outcome
- GhALMT1 expressione0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“GhALMT1 expression was only activated under Al3+ stress condition”
Claim · model-written summary
Aluminum and proton stress increased citrate and malate excretion in wild type cotton.
- Taxon
- Cotton plantsGossypium hirsutumt0
- Material
- wild type plantse0
- Treatment
- Al and H+ stresse0
- Outcome
- citrate and malate excretion valuese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton plants”
e0“enhanced citrate and malate excretion values in the wild type plants which are treated with Al and H+ stress”
The same questions in other papers
ph · growth · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.