Abstract
Background Cuticular waxes cover plant surface and play important roles in protecting plants from abiotic and biotic stresses. The variations of wax deposition and chemical compositions under changing environments have been shown to be related to plant adaptations. However, it is still not clear whether the wax depositions could be adjusted to increase plant adaptations to stressed conditions. Methods In this study, exogenous methyl jasmonate (MeJA), the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) and salicylic acid (SA) were applied to test their effects on cuticular wax deposition in two Brassica napus cultivars, Zhongshuang 9 (ZS9, low wax coverage ) and Yuyou 19 (YY19, high wax coverage). Next, we measured the water loss rate and the transcriptional expression of genes involved in wax biosynthesis as well as genes related to disease defense. Results Seven wax compound classes, including fatty acids, aldehydes, alkanes, secondary alcohols, ketones, and unbranched as well as branched primary alcohols, were identified in B. napus leaf wax mixtures. MeJA, SA and ACC treatments had no significant effect on total wax amounts in YY19, whereas ACC reduced total wax amounts in ZS9. Overall, hormone treatments led to an increase in the amounts of aldehydes and ketones, and a decrease of secondary alcohol in ZS9, whereas they led to a decrease of alkane amounts and an increase of secondary alcohol amounts in YY19. Concomitantly, both cultivars also exhibited different changes in cuticle permeability, with leaf water loss rate per 15 min increased from 1.57% (averaged across treatments) at 1.57% (averaged across treatments) at 15 min to 3.12% at 30 min for ZS9 (except for ACC treated plant) and decreased for YY19. MeJA-treated plants of both cultivars relatively had higher water loss rate per 15 min when compared to other treatments. Conclusion. Our findings that B. napus leaf wax composition and cuticle permeability are altered by exogenous SA, MeJA and ACC suggest that the hormone treatments affect wax composition, and that the changes in wax profiles would cause changes in cuticle permeability.
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 10
Claim · model-written summary
Seven wax compound classes were identified in B. napus leaf wax.
- Taxon
- B. napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Organ / stage
- leafe0
- Outcome
- Seven wax compound classese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Seven wax compound classes, including fatty acids, aldehydes, alkanes, secondary alcohols, ketones, and unbranched as well as branched primary alcohols, were identified in B. napus leaf wax mixtures”
Claim · model-written summary
MeJA, SA and ACC did not significantly change total wax amounts in YY19.
- Taxon
- Brassica napusBrassica napust0
- Material
- YY19e0
- Treatment
- MeJA, SA and ACC treatmentse0
- Outcome
- total wax amountse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA, SA and ACC treatments had no significant effect on total wax amounts in YY19”
t0“Brassica napus”
Claim · model-written summary
ACC reduced total wax amounts in ZS9.
- Taxon
- Brassica napusBrassica napust0
- Material
- ZS9e0
- Treatment
- ACCe0
- Outcome
- total wax amountse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ACC reduced total wax amounts in ZS9”
t0“Brassica napus”
Claim · model-written summary
Hormone treatments increased aldehydes and ketones in ZS9.
- Taxon
- Brassica napusBrassica napust0
- Material
- ZS9e0
- Treatment
- hormone treatmentse0
- Outcome
- amounts of aldehydes and ketonese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hormone treatments led to an increase in the amounts of aldehydes and ketones, and a decrease of secondary alcohol in ZS9”
t0“Brassica napus”
Claim · model-written summary
Hormone treatments decreased secondary alcohol in ZS9.
- Taxon
- Brassica napusBrassica napust0
- Material
- ZS9e0
- Treatment
- hormone treatmentse0
- Outcome
- secondary alcohole0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hormone treatments led to an increase in the amounts of aldehydes and ketones, and a decrease of secondary alcohol in ZS9”
t0“Brassica napus”
Claim · model-written summary
Hormone treatments decreased alkane amounts in YY19.
- Taxon
- Brassica napusBrassica napust0
- Material
- YY19e0
- Treatment
- hormone treatmentse1
- Outcome
- alkane amountse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they led to a decrease of alkane amounts and an increase of secondary alcohol amounts in YY19”
e1“hormone treatments led to an increase in the amounts of aldehydes and ketones, and a decrease of secondary alcohol in ZS9”
t0“Brassica napus”
Claim · model-written summary
Hormone treatments increased secondary alcohol in YY19.
- Taxon
- Brassica napusBrassica napust0
- Material
- YY19e0
- Treatment
- hormone treatmentse1
- Outcome
- secondary alcohol amountse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they led to a decrease of alkane amounts and an increase of secondary alcohol amounts in YY19”
e1“hormone treatments led to an increase in the amounts of aldehydes and ketones, and a decrease of secondary alcohol in ZS9”
t0“Brassica napus”
Claim · model-written summary
Leaf water loss per 15 minutes rose from 1.57% at 15 minutes to 3.12% at 30 minutes in ZS9 except under ACC.
- Taxon
- Brassica napusBrassica napust0
- Material
- ZS9e0
- Outcome
- leaf water loss rate per 15 mine0
- Direction
- increasede0
- Value
- 3.12%e0
- Qualifier
- except for ACC treated plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Abstract repeats the 1.57% phrase.
Verbatim
e0“leaf water loss rate per 15 min increased from 1.57% (averaged across treatments) at 1.57% (averaged across treatments) at 15 min to 3.12% at 30 min for ZS9 (except for ACC treated plant)”
t0“Brassica napus”
Claim · model-written summary
Leaf water loss decreased in YY19.
- Taxon
- Brassica napusBrassica napust0
- Material
- YY19e0
- Outcome
- leaf water loss rate per 15 mine1
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased for YY19”
e1“leaf water loss rate per 15 min increased from 1.57% (averaged across treatments) at 1.57% (averaged across treatments) at 15 min to 3.12% at 30 min for ZS9 (except for ACC treated plant)”
t0“Brassica napus”
Claim · model-written summary
MeJA-treated plants of both cultivars had higher water loss than under other treatments.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- MeJA-treatede0
- Outcome
- water loss rate per 15 mine0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA-treated plants of both cultivars relatively had higher water loss rate per 15 min when compared to other treatments”
t0“Brassica napus”
The same questions in other papers
(-)-methyl jasmonate · molecular: metabolites · Brassica napus (oilseed rape)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →salicylic acid · molecular: metabolites · Brassica napus (oilseed rape)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →1-aminocyclopropanecarboxylic acid · molecular: metabolites · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- no effect
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.