Abstract
Proteomics was employed to investigate the molecular mechanisms of apoplastic response to potassium(K)-deficiency in cotton. Low K (LK) treatment significantly decreased the K and protein contents of xylem sap. Totally, 258 peptides were qualitatively identified in the xylem sap of cotton seedlings, of which, 90.31% were secreted proteins. Compared to the normal K (NK), LK significantly decreased the expression of most environmental-stress-related proteins and resulted in a lack of protein isoforms in the characterized proteins. For example, the contents of 21 Class Ш peroxidase isoforms under the LK were 6 to 44% of those under the NK and 11 its isoforms were lacking under the LK treatment; the contents of 3 chitinase isoforms under LK were 11-27% of those under the NK and 2 its isoforms were absent under LK. In addition, stress signaling and recognizing proteins were significantly down-regulated or disappeared under the LK. In contrast, the LK resulted in at least 2-fold increases of only one peroxidase, one protease inhibitor, one non-specific lipid-transfer protein and histone H4 and in the appearance of H2A. Therefore, K deficiency decreased plant tolerance to environmental stresses, probably due to the significant and pronounced decrease or disappearance of a myriad of stress-related proteins.
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Claims 17
Claim · model-written summary
Low potassium significantly decreased potassium content in cotton xylem sap.
- Taxon
- cotton
Gossypium hirsutumt0 - Organ / stage
- xylem sape0
- Treatment
- Low K (LK) treatmente0
- Outcome
- Ke0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low K (LK) treatment significantly decreased the K and protein contents of xylem sap.”
t0“cotton”
Claim · model-written summary
Low potassium significantly decreased protein content in cotton xylem sap.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Low K (LK) treatmente0
- Outcome
- protein contents of xylem sape0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low K (LK) treatment significantly decreased the K and protein contents of xylem sap.”
t0“cotton”
Claim · model-written summary
The cotton seedling xylem sap proteome contained 258 identified peptides.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- xylem sape0
- Outcome
- peptides were qualitatively identifiede0
- Value
- 258 peptidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Totally, 258 peptides were qualitatively identified in the xylem sap of cotton seedlings”
Claim · model-written summary
Secreted proteins accounted for 90.31% of identified cotton xylem sap peptides.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- secreted proteinse0
- Value
- 90.31%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of which, 90.31% were secreted proteins.”
t0“cotton”
Claim · model-written summary
Low potassium significantly decreased most environmental-stress-related proteins versus normal potassium.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Outcome
- expression of most environmental-stress-related proteinse0
- Direction
- decreasede0
- Comparator
- normal K (NK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the normal K (NK), LK significantly decreased the expression of most environmental-stress-related proteins”
t0“cotton”
Claim · model-written summary
Low potassium caused a lack of protein isoforms in characterized cotton proteins.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Outcome
- lack of protein isoformse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LK significantly decreased the expression of most environmental-stress-related proteins and resulted in a lack of protein isoforms in the characterized proteins.”
t0“cotton”
Claim · model-written summary
Under low potassium, 21 Class Ш peroxidase isoforms had 6 to 44% of their normal-potassium contents.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Gene
- Class Ш peroxidasee0
- Outcome
- contents of 21 Class Ш peroxidase isoformse0
- Value
- 6 to 44%e0
- Comparator
- NKe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of 21 Class Ш peroxidase isoforms under the LK were 6 to 44% of those under the NK”
t0“cotton”
Claim · model-written summary
Eleven Class Ш peroxidase isoforms were lacking under low potassium.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LK treatmente0
- Gene
- Class Ш peroxidasee1
- Outcome
- isoforms were lackinge0
- Direction
- lackinge0
- Value
- 11e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“11 its isoforms were lacking under the LK treatment”
e1“21 Class Ш peroxidase isoforms”
t0“cotton”
Claim · model-written summary
Three chitinase isoforms under low potassium had 11-27% of their normal-potassium contents.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Gene
- chitinasee0
- Outcome
- contents of 3 chitinase isoformse0
- Value
- 11-27%e0
- Comparator
- NKe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of 3 chitinase isoforms under LK were 11-27% of those under the NK”
t0“cotton”
Claim · model-written summary
Two chitinase isoforms were absent under low potassium.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Gene
- chitinasee1
- Outcome
- isoforms were absente0
- Direction
- absente0
- Value
- 2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2 its isoforms were absent under LK”
e1“chitinase isoforms”
t0“cotton”
Claim · model-written summary
Stress signaling and recognizing proteins were significantly down-regulated or disappeared under low potassium.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Outcome
- stress signaling and recognizing proteinse0
- Direction
- down-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stress signaling and recognizing proteins were significantly down-regulated or disappeared under the LK.”
t0“cotton”
Claim · model-written summary
Low potassium increased one peroxidase by at least twofold.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe0
- Outcome
- one peroxidasee0
- Direction
- increasese0
- Value
- at least 2-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the LK resulted in at least 2-fold increases of only one peroxidase”
t0“cotton”
Claim · model-written summary
Low potassium increased one protease inhibitor by at least twofold.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe1
- Outcome
- one protease inhibitore0
- Direction
- increasese0
- Value
- at least 2-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at least 2-fold increases of only one peroxidase, one protease inhibitor”
e1“the LK resulted in at least 2-fold increases”
t0“cotton”
Claim · model-written summary
Low potassium increased one non-specific lipid-transfer protein by at least twofold.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe1
- Outcome
- one non-specific lipid-transfer proteine0
- Direction
- increasese0
- Value
- at least 2-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at least 2-fold increases of only one peroxidase, one protease inhibitor, one non-specific lipid-transfer protein”
e1“the LK resulted in at least 2-fold increases”
t0“cotton”
Claim · model-written summary
Low potassium increased histone H4 by at least twofold.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe1
- Gene
- histone H4e0
- Outcome
- histone H4e0
- Direction
- increasese0
- Value
- at least 2-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at least 2-fold increases of only one peroxidase, one protease inhibitor, one non-specific lipid-transfer protein and histone H4”
e1“the LK resulted in at least 2-fold increases”
t0“cotton”
Claim · model-written summary
Histone H2A appeared under low potassium.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- LKe1
- Gene
- H2Ae0
- Outcome
- appearance of H2Ae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the appearance of H2A.”
e1“the LK resulted in at least 2-fold increases of only one peroxidase, one protease inhibitor, one non-specific lipid-transfer protein and histone H4 and in the appearance of H2A.”
t0“cotton”
Claim · model-written summary
The authors infer that potassium deficiency decreased cotton environmental stress tolerance, probably through loss of stress-related proteins.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- K deficiencye0
- Outcome
- plant tolerance to environmental stressese0
- Direction
- decreasede0
- Qualifier
- probably due to the significant and pronounced decrease or disappearance of a myriad of stress-related proteinse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K deficiency decreased plant tolerance to environmental stresses, probably due to the significant and pronounced decrease or disappearance of a myriad of stress-related proteins.”
t0“cotton”
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See all 24 papers →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.