Abstract
Stomata are microscopic pores in leaf epidermis that regulate gas exchange between plants and the environment. Being natural openings on the leaf surface, stomata also serve as ports for the invasion of foliar pathogenic bacteria. Each stomatal pore is enclosed by a pair of guard cells that are able to sense a wide spectrum of biotic and abiotic stresses and respond by precisely adjusting the pore width. However, it is not clear whether stomatal responses to simultaneously imposed biotic and abiotic signals are mutually dependent on each other. Here we show that a genetically engineered Escherichia coli strain DH5α could trigger stomatal closure in Vicia faba, an innate immune response that might depend on NADPH oxidase-mediated ROS burst. DH5α-induced stomatal closure could be abolished or disguised under certain environmental conditions like low [CO2], darkness, and drought, etc. Foliar spraying of high concentrations of ABA could reduce stomatal aperture in high humidity-treated faba bean plants. Consistently, the aggressive multiplication of DH5α bacteria in Vicia faba leaves under high humidity could be alleviated by exogenous application of ABA. Our data suggest that a successful colonization of bacteria on the leaf surface is correlated with stomatal aperture regulation by a specific set of environmental factors.
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Claims 5
Claim · model-written summary
A genetically engineered Escherichia coli strain DH5α could trigger stomatal closure in Vicia faba.
- Taxon
- Vicia faba
Vicia fabae1 - Treatment
- genetically engineered Escherichia coli strain DH5αe1
- Interactor
- Escherichia coli strain DH5α
.jpg?width=60)
Escherichia colie1other - Outcome
- stomatal closuree1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“a genetically engineered Escherichia coli strain DH5α could trigger stomatal closure in Vicia faba”
Claim · model-written summary
DH5α-induced stomatal closure could be abolished or disguised under certain conditions such as low CO2, darkness and drought.
- Taxon
- Vicia fabaVicia fabae1
- Treatment
- low [CO2], darkness, and droughte2
- Outcome
- DH5α-induced stomatal closuree2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a genetically engineered Escherichia coli strain DH5α could trigger stomatal closure in Vicia faba”
e2“DH5α-induced stomatal closure could be abolished or disguised under certain environmental conditions like low [CO2], darkness, and drought”
Claim · model-written summary
Foliar spraying of high concentrations of ABA could reduce stomatal aperture in high humidity-treated faba bean plants.
- Taxon
- faba beanVicia fabae3
- Treatment
- Foliar spraying of high concentrations of ABAe3
- Outcome
- stomatal aperturee3
- Direction
- reducee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Foliar spraying of high concentrations of ABA could reduce stomatal aperture in high humidity-treated faba bean plants”
Claim · model-written summary
Exogenous ABA application could alleviate the aggressive multiplication of DH5α bacteria in Vicia faba leaves under high humidity.
- Taxon
- Vicia fabaVicia fabae4
- Organ / stage
- leavese4
- Treatment
- exogenous application of ABAe4
- Interactor
- DH5α bacteriae4other
- Outcome
- aggressive multiplication of DH5α bacteriae4
- Direction
- alleviatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the aggressive multiplication of DH5α bacteria in Vicia faba leaves under high humidity could be alleviated by exogenous application of ABA”
Claim · model-written summary
Successful colonization of bacteria on the leaf surface is correlated with stomatal aperture regulation by a specific set of environmental factors.
- Taxon
- Vicia fabaVicia fabae1
- Treatment
- a specific set of environmental factorse5
- Outcome
- successful colonization of bacteria on the leaf surfacee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a genetically engineered Escherichia coli strain DH5α could trigger stomatal closure in Vicia faba”
e5“a successful colonization of bacteria on the leaf surface is correlated with stomatal aperture regulation by a specific set of environmental factors”
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