Abstract
The effects of n-propyl dihydrojasmonate (PDJ) application, which is a synthetic analog of jasmonic acid (JA) against sodium chloride (NaCl) stress in apple seedlings, were examined.The malondialdehyde (MDA) and proline concentrations, endogenous JA and abscisic acid (ABA) concentrations, antioxidant activities, Na + and K + concentrations, along with 9-cis-epoxycarotenoid deoxygenase 1 (MdNCED1), ABA 8'-hydroxylase 1 (MdCYP707A1), allene oxide synthase 1 (MdAOS1), jasmonate resistant (MdJAR), jasmonate ZIM-domain 2 (MdJAZ2), synthetase ( ), ornithine aminotransferase 1 (MdOAT1), proline dehydrogenase (MdPDH), salt overly sensitive 1 (MdSOS1) and Na + /H + exchanger 1 (MdNHX1) gene expressions in the leaves were analyzed.NaCl treatment without PDJ application (PDJ - NaCl + tions and superoxide (SOD), peroxidase (POD) and catalase (CAT) activities, but increased the ion leakage, MDA, proline, and Na + concentrations, as well as the hydrogen peroxide (H 2 O 2 ) and endogenous JA and ABA concentrations in the leaves.Foliar application of PDJ before NaCl treatment (PDJ + NaCl + ) decreased Na + concentrations, ion leakage, MDA, proline accumulation and H 2 O 2 generation, but increased K + concentrations, antioxidant capacity, and chlorophyll concentrations in the leaves.In the PDJ + NaCl -group, although the JA and ABA concentrations and MdAOS1, MdJAR, and MdNCED1 gene expressions were increased, the MdJAZ2 and MdCYP707A1 gene expressions were decreased.In addition, the PDJ + NaCl + group showed higher MdPDH, MdSOS1, and MdNHX1 gene expressions and lower gene expressions than the PDJ -NaCl + group at 7 and 10 days after treatment.The present data suggested that PDJ application could induce rapidly endogenous JA and ABA, enhance SOD, POD, and CAT activities, decrease the Na + uptake, and mitigate NaCl stress.
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Claims 7
Claim · model-written summary
NaCl without PDJ increased leaf ion leakage, MDA, proline, Na+, hydrogen peroxide, JA and ABA.
- Taxon
- apple seedlings
Malus domesticat0 - Treatment
- NaCl treatment without PDJ applicationt1
- Outcome
- ion leakage, MDA, proline, and Na + concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but increased the ion leakage, MDA, proline, and Na + concentrations, as well as the hydrogen peroxide (H 2 O 2 ) and endogenous JA and ABA concentrations in the leaves”
t0“apple seedlings”
t1“NaCl treatment without PDJ application”
Claim · model-written summary
Foliar PDJ before NaCl lowered leaf sodium, ion leakage, MDA, proline and hydrogen peroxide.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- Foliar application of PDJ before NaCl treatmente0
- Outcome
- Na + concentrations, ion leakage, MDA, proline accumulation and H 2 O 2 generatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of PDJ before NaCl treatment (PDJ + NaCl + ) decreased Na + concentrations, ion leakage, MDA, proline accumulation and H 2 O 2 generation”
t0“apple seedlings”
Claim · model-written summary
Foliar PDJ before NaCl raised leaf potassium, antioxidant capacity and chlorophyll.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- Foliar application of PDJ before NaCl treatmentt1
- Outcome
- K + concentrations, antioxidant capacity, and chlorophyll concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but increased K + concentrations, antioxidant capacity, and chlorophyll concentrations in the leaves”
t0“apple seedlings”
t1“Foliar application of PDJ before NaCl treatment”
Claim · model-written summary
In the PDJ plus NaCl group, JA and ABA concentrations increased.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- PDJ + NaCle0
- Outcome
- JA and ABA concentrationse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the PDJ + NaCl -group, although the JA and ABA concentrations and MdAOS1, MdJAR, and MdNCED1 gene expressions were increased”
t0“apple seedlings”
Claim · model-written summary
In the PDJ plus NaCl group, MdAOS1, MdJAR and MdNCED1 expression increased.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- PDJ + NaCle0
- Outcome
- MdAOS1, MdJAR, and MdNCED1 gene expressionse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the PDJ + NaCl -group, although the JA and ABA concentrations and MdAOS1, MdJAR, and MdNCED1 gene expressions were increased”
t0“apple seedlings”
Claim · model-written summary
In the PDJ plus NaCl group, MdJAZ2 and MdCYP707A1 expression decreased.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- PDJ + NaClt1
- Outcome
- MdJAZ2 and MdCYP707A1 gene expressionse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the MdJAZ2 and MdCYP707A1 gene expressions were decreased”
t0“apple seedlings”
t1“In the PDJ + NaCl -group”
Claim · model-written summary
The PDJ plus NaCl group had higher MdPDH, MdSOS1 and MdNHX1 expression than the no-PDJ salt group at 7 and 10 days.
- Taxon
- apple seedlingsMalus domesticat0
- Outcome
- MdPDH, MdSOS1, and MdNHX1 gene expressionse0
- Direction
- highere0
- Qualifier
- 7 and 10 days after treatmente0
- Comparator
- PDJ -NaCl + groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the PDJ + NaCl + group showed higher MdPDH, MdSOS1, and MdNHX1 gene expressions and lower gene expressions than the PDJ -NaCl + group at 7 and 10 days after treatment”
t0“apple seedlings”
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