Abstract
Drought stress severely impairs crop growth and agricultural productivity. Stomata, specialized structures in the leaf epidermis, play a critical role in gas exchange and transpiration. Therefore, reducing stomatal density to minimize water loss is an effective strategy for enhancing crop drought tolerance. The SDD1 gene was characterized as a negative regulator of stomatal density, and its function has been well characterized in model plants. However, its role in potato remains largely unknown. In this study, we identified a potato SDD1-like gene, StSDD1, which is predominantly expressed in young leaves and induced by drought stress and various hormones. Subcellular localization revealed that the StSDD1 fusion protein localizes to the plasma membrane and cytoplasm. Overexpression of StSDD1 decreased stomatal density and improved water use efficiency, leading to enhanced drought tolerance, whereas knockdown transgenic lines exhibited the opposite phenotype. Additionally, altering StSDD1 expression affected the expression of key stomatal development genes and several physiological and photosynthetic drought-related parameters. Taken together, our results suggest that StSDD1 enhances drought tolerance, potentially by reducing stomatal density. These findings indicate a role for StSDD1 in this process and provide a valuable genetic resource for molecular breeding of drought-resistant crops.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
we identified a potato SDD1-like gene, StSDD1
- Taxon
- potato
Solanum tuberosume0 - Gene
- StSDD1e0
- Outcome
- potato SDD1-like genee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we identified a potato SDD1-like gene, StSDD1”
Claim · model-written summary
StSDD1, which is predominantly expressed in young leaves
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Organ / stage
- young leavese0
- Gene
- StSDD1e0
- Outcome
- predominantly expressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“StSDD1, which is predominantly expressed in young leaves”
t0“Solanum tuberosum L.”
Claim · model-written summary
induced by drought stress and various hormones
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- drought stresse0
- Gene
- StSDD1t1
- Outcome
- inducede0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induced by drought stress and various hormones”
t0“Solanum tuberosum L.”
t1“StSDD1”
e1“Overexpression of StSDD1 decreased stomatal density”
Claim · model-written summary
the StSDD1 fusion protein localizes to the plasma membrane and cytoplasm
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Gene
- StSDD1 fusion proteine0
- Outcome
- localizes to the plasma membrane and cytoplasme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the StSDD1 fusion protein localizes to the plasma membrane and cytoplasm”
t0“Solanum tuberosum L.”
Claim · model-written summary
Overexpression of StSDD1 decreased stomatal density
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- Overexpression of StSDD1e0
- Gene
- StSDD1e0
- Outcome
- stomatal densitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of StSDD1 decreased stomatal density”
t0“Solanum tuberosum L.”
Claim · model-written summary
Overexpression of StSDD1 decreased stomatal density and improved water use efficiency
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- Overexpression of StSDD1e0
- Gene
- StSDD1e0
- Outcome
- water use efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of StSDD1 decreased stomatal density and improved water use efficiency”
t0“Solanum tuberosum L.”
Claim · model-written summary
leading to enhanced drought tolerance
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- Overexpression of StSDD1e1
- Gene
- StSDD1t1
- Outcome
- drought tolerancee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to enhanced drought tolerance”
t0“Solanum tuberosum L.”
t1“StSDD1”
e1“Overexpression of StSDD1 decreased stomatal density”
Claim · model-written summary
knockdown transgenic lines exhibited the opposite phenotype
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- knockdown transgenic linese0
- Outcome
- opposite phenotypee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“knockdown transgenic lines exhibited the opposite phenotype”
t0“Solanum tuberosum L.”
Claim · model-written summary
altering StSDD1 expression affected the expression of key stomatal development genes
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- altering StSDD1 expressione0
- Gene
- StSDD1e0
- Outcome
- expression of key stomatal development genese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“altering StSDD1 expression affected the expression of key stomatal development genes”
t0“Solanum tuberosum L.”
Claim · model-written summary
altering StSDD1 expression affected the expression of key stomatal development genes and several physiological and photosynthetic drought-related parameters
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- altering StSDD1 expressione0
- Gene
- StSDD1e0
- Outcome
- physiological and photosynthetic drought-related parameterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“altering StSDD1 expression affected the expression of key stomatal development genes and several physiological and photosynthetic drought-related parameters”
t0“Solanum tuberosum L.”
Claim · model-written summary
StSDD1 enhances drought tolerance, potentially by reducing stomatal density
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Gene
- StSDD1e0
- Outcome
- drought tolerancee0
- Qualifier
- potentially by reducing stomatal densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“StSDD1 enhances drought tolerance, potentially by reducing stomatal density”
t0“Solanum tuberosum L.”