Abstract
Drought stress limits wheat growth and productivity. The response of wheat (Triticum aestivum L.) to different water supply conditions (well-watered and drought-stressed) and exogenous methyl jasmonate (MeJA; 0 and 0.25 μM) was studied. The application of MeJA enhanced wheat adaptability to drought stress by physiological and metabolic adjustments. Drought stress reduced net photosynthetic rate (P N), stomatal conductance (g s), transpiration rate (E), and water-use efficiency (WUE) in wheat. The application of exogenous MeJA decreased also g s and E, but stimulated WUE. Meanwhile, MeJA mitigated the decline of P N, g s, and WUE induced by drought stress and midday depression by 6-183%. Both drought stress and exogenous MeJA induced stomatal closure, which improved water status and delayed plant senescence. MeJA enhanced the activities of superoxide dismutase, peroxidase, catalase, and reduced malondialdehyde content. P N-PAR response curves showed that MeJA mitigated the decline of maximum P N, apparent quantum yield, and saturation irradiance, and the increase of compensation irradiance. Drought stress and exogenous MeJA increased dark respiration rate and showed an additive effect. These results indicated that 0.25 μM MeJA enhanced the photosynthesis under drought stress mainly by improving the water status and antioxidant capacity of wheat.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 15
Claim · model-written summary
Drought reduced photosynthetic rate, stomatal conductance and transpiration.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Drought stresse0
- Outcome
- net photosynthetic rate (P N), stomatal conductance (g s), transpiration rate (E)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress reduced net photosynthetic rate (P N), stomatal conductance (g s), transpiration rate (E), and water-use efficiency (WUE) in wheat.”
Claim · model-written summary
Drought reduced water-use efficiency.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Drought stresse0
- Outcome
- water-use efficiency (WUE)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress reduced net photosynthetic rate (P N), stomatal conductance (g s), transpiration rate (E), and water-use efficiency (WUE) in wheat.”
Claim · model-written summary
Exogenous MeJA decreased stomatal conductance and transpiration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- exogenous MeJAe0
- Outcome
- g s and Ee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of exogenous MeJA decreased also g s and E”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Exogenous MeJA stimulated water-use efficiency.
- Taxon
- wheatTriticum aestivume1
- Treatment
- MeJAe0
- Outcome
- WUEe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA decreased also g s and E, but stimulated WUE”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
MeJA mitigated drought-induced declines in photosynthetic rate, stomatal conductance and WUE by 6–183%.
- Taxon
- wheatTriticum aestivume1
- Treatment
- MeJAe0
- Outcome
- P N, g s, and WUEe0
- Direction
- mitigatede0
- Value
- 6-183%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA mitigated the decline of P N, g s, and WUE induced by drought stress and midday depression by 6-183%”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Drought and MeJA induced stomatal closure.
- Taxon
- wheatTriticum aestivume1
- Treatment
- drought stress and exogenous MeJAe0
- Outcome
- stomatal closuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both drought stress and exogenous MeJA induced stomatal closure”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Stomatal closure improved water status and delayed senescence.
- Taxon
- wheatTriticum aestivume1
- Outcome
- water status and delayed plant senescencee0
- Qualifier
- stomatal closuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal closure, which improved water status and delayed plant senescence”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
MeJA enhanced superoxide dismutase, peroxidase and catalase activities.
- Taxon
- wheatTriticum aestivume1
- Treatment
- MeJAe0
- Outcome
- activities of superoxide dismutase, peroxidase, catalasee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA enhanced the activities of superoxide dismutase, peroxidase, catalase”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
MeJA reduced malondialdehyde content.
- Taxon
- wheatTriticum aestivume2
- Treatment
- MeJAe1
- Outcome
- malondialdehyde contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced malondialdehyde content”
e1“MeJA enhanced the activities”
e2“wheat (Triticum aestivum L.)”
Claim · model-written summary
MeJA mitigated declines of maximum photosynthetic rate, apparent quantum yield and saturation irradiance.
- Taxon
- wheatTriticum aestivume1
- Treatment
- MeJAe0
- Outcome
- maximum P N, apparent quantum yield, and saturation irradiancee0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA mitigated the decline of maximum P N, apparent quantum yield, and saturation irradiance”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
MeJA mitigated an increase in compensation irradiance.
- Taxon
- wheatTriticum aestivume1
- Treatment
- MeJAe0
- Outcome
- compensation irradiancee0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA mitigated the decline of maximum P N, apparent quantum yield, and saturation irradiance, and the increase of compensation irradiance”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Drought stress increased dark respiration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Drought stresse0
- Outcome
- dark respiration ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress and exogenous MeJA increased dark respiration rate”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Exogenous MeJA increased dark respiration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- exogenous MeJAe0
- Outcome
- dark respiration ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress and exogenous MeJA increased dark respiration rate”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Drought and MeJA had additive effects on dark respiration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Drought stress and exogenous MeJAe0
- Outcome
- dark respiration ratee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress and exogenous MeJA increased dark respiration rate and showed an additive effect.”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Authors conclude MeJA enhanced drought-stressed wheat photosynthesis through improved water status and antioxidant capacity.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 0.25 μM MeJAe0
- Outcome
- photosynthesise0
- Qualifier
- improving the water status and antioxidant capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.25 μM MeJA enhanced the photosynthesis under drought stress mainly by improving the water status and antioxidant capacity of wheat”
The same questions in other papers
(-)-methyl jasmonate · physiology: water · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
(-)-methyl jasmonate · physiology: oxidative · Triticum aestivum (wheat)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →(-)-methyl jasmonate · physiology: photosynthesis · Triticum aestivum (wheat)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →(-)-methyl jasmonate · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →drought · physiology: water · Triticum aestivum (wheat)Positive and negative results
145 papers in the same direction as this paper · 60 in the opposite direction
- positive
- positive
- positive
202 papers more in this group
See all 206 papers →drought · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
204 papers in the same direction as this paper · 41 in the opposite direction
- negative
- positive
- positive
242 papers more in this group
See all 246 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.