Abstract
Abscisic acid (ABA) is critical in drought tolerance and plant growth. Group A protein type 2C phosphatases (PP2Cs) are negative regulators of ABA signaling and plant adaptation to stress. Knowledge about the functions of potato group A PP2Cs is limited. Here, we report that the potato group A PP2C StHAB1 is broadly expressed in potato plants and strongly induced by ABA and drought. Suppression of StHAB1 enhanced potato ABA sensitivity and drought tolerance, whereas overexpression of the dominant mutant StHAB1G276D compromised ABA sensitivity and drought tolerance. StHAB1 interacts with almost all ABA receptors and the Snf1-Related Kinase OST1. Suppressing StHAB1 and overexpressing StHAB1G276D alter potato growth morphology; notably, overexpression of StHAB1G276D causes excessive shoot branching. RNA-sequencing analyses identified that the auxin efflux carrier genes StPIN3, StPIN5, and StPIN8 were up-regulated in StHAB1G276D-overexpressing axillary buds. Correspondingly, the auxin concentration was reduced in StHAB1G276D-overexpressing axillary buds, consistent with the role of auxin in repressing lateral branch outgrowth. The expression of BRANCHED1s (StBRC1a and StBRC1b) was unchanged in StHAB1G276D-overexpressing axillary buds, suggesting that StHAB1G276D overexpression does not cause axillary bud outgrowth via regulation of BRC1 expression. Our findings demonstrate that StHAB1 is vital in potato drought tolerance and shoot branching.
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Claims 13
Claim · model-written summary
Potato StHAB1 is broadly expressed and induced by ABA and drought.
- Taxon
- potato
Solanum tuberosume0 - Gene
- StHAB1e0
- Outcome
- broadly expressed in potato plants and strongly induced by ABA and droughte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the potato group A PP2C StHAB1 is broadly expressed in potato plants and strongly induced by ABA and drought.”
Claim · model-written summary
StHAB1 suppression enhanced potato ABA sensitivity.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Suppression of StHAB1e0
- Gene
- StHAB1e0
- Outcome
- potato ABA sensitivitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppression of StHAB1 enhanced potato ABA sensitivity and drought tolerance”
Claim · model-written summary
StHAB1 suppression enhanced potato drought tolerance.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Suppression of StHAB1e0
- Outcome
- drought tolerancee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppression of StHAB1 enhanced potato ABA sensitivity and drought tolerance”
Claim · model-written summary
Overexpression of StHAB1G276D compromised potato ABA sensitivity.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- overexpression of the dominant mutant StHAB1G276De0
- Outcome
- ABA sensitivitye0
- Direction
- compromisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of the dominant mutant StHAB1G276D compromised ABA sensitivity and drought tolerance.”
t0“potato”
Claim · model-written summary
Overexpression of StHAB1G276D compromised potato drought tolerance.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- overexpression of the dominant mutant StHAB1G276De0
- Outcome
- drought tolerancee0
- Direction
- compromisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of the dominant mutant StHAB1G276D compromised ABA sensitivity and drought tolerance.”
t0“potato”
Claim · model-written summary
StHAB1 interacts with almost all ABA receptors and OST1.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- StHAB1e0
- Outcome
- interacts with almost all ABA receptors and the Snf1-Related Kinase OST1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“StHAB1 interacts with almost all ABA receptors and the Snf1-Related Kinase OST1.”
t0“potato”
Claim · model-written summary
StHAB1 suppression alters potato growth morphology.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Suppressing StHAB1e0
- Outcome
- potato growth morphologye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppressing StHAB1 and overexpressing StHAB1G276D alter potato growth morphology”
Claim · model-written summary
StHAB1G276D overexpression alters potato growth morphology.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- overexpressing StHAB1G276De0
- Outcome
- potato growth morphologye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suppressing StHAB1 and overexpressing StHAB1G276D alter potato growth morphology”
Claim · model-written summary
StHAB1G276D overexpression causes excessive shoot branching.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- overexpression of StHAB1G276De0
- Outcome
- shoot branchinge0
- Direction
- excessivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of StHAB1G276D causes excessive shoot branching.”
t0“potato”
Claim · model-written summary
StPIN3, StPIN5 and StPIN8 were up-regulated in StHAB1G276D-overexpressing axillary buds.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- StPIN3, StPIN5, and StPIN8e0
- Outcome
- up-regulated in StHAB1G276D-overexpressing axillary budse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the auxin efflux carrier genes StPIN3, StPIN5, and StPIN8 were up-regulated in StHAB1G276D-overexpressing axillary buds.”
t0“potato”
Claim · model-written summary
Auxin concentration was reduced in StHAB1G276D-overexpressing axillary buds.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- auxin concentratione0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the auxin concentration was reduced in StHAB1G276D-overexpressing axillary buds”
t0“potato”
Claim · model-written summary
StBRC1a and StBRC1b expression was unchanged in StHAB1G276D-overexpressing axillary buds.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- StBRC1a and StBRC1be0
- Outcome
- expression of BRANCHED1se0
- Direction
- unchangede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of BRANCHED1s (StBRC1a and StBRC1b) was unchanged in StHAB1G276D-overexpressing axillary buds”
t0“potato”
Claim · model-written summary
The authors infer that StHAB1G276D overexpression does not promote axillary bud outgrowth through BRC1 expression regulation.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- BRC1e0
- Outcome
- axillary bud outgrowthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that StHAB1G276D overexpression does not cause axillary bud outgrowth via regulation of BRC1 expression.”
t0“potato”
The same questions in other papers
loss of function · tolerance: abiotic · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
loss of function · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
8 papers in the same direction as this paper · 13 in the opposite direction
- negative
- negative
- negative
18 papers more in this group
See all 22 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.