Abstract
The pungency of chili peppers is conferred by compounds called capsaicinoids that are produced only in the fruits of the Capsicum genus. Accumulation of capsaicinoids in these fruits may be affected by environmental conditions such as water and nutrient stresses, although these effects may vary even among genotypes within a species. The Habanero pepper ( Capsicum chinense Jacq.), grown in the Yucatán, is in especially high demand as a result of its unique flavor, aroma, and pungency and is the second most important commercial crop in the state after the tomato. Although the Habanero pepper is a significant economic resource for the region, few studies have investigated the effects of abiotic stresses on capsaicinoid production. In this study, the effects of water stress on plant growth, capsaicinoid accumulation, and capsaicin synthase activity were evaluated. Habanero pepper plants under water stress had a lower height, root dry weight, and root/shoot relation than control plants, which were irrigated daily. However, fruit growth and production were unaffected by water stress. Capsaicin and dihydrocapsaicin concentrations increased in fruits of stressed plants compared with control plants, and this effect was correlated with fruit age. However, capsaicin synthase activity was reduced in response to water stress, and this effect depended on both stress severity and fruit age. These results provide new information on the regulation of capsaicinoid metabolism in response to abiotic stress from the fruit of a highly pungent chili pepper.
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Claims 5
Claim · model-written summary
Water stress lowered plant height, root dry weight and root/shoot relation relative to daily irrigation.
Verbatim
e0“Habanero pepper plants under water stress had a lower height, root dry weight, and root/shoot relation than control plants, which were irrigated daily”
Claim · model-written summary
Water stress did not change fruit growth or production.
- Taxon
- Capsicum chinense Jacq.
.jpg?width=60)
Capsicum chinenset0 - Treatment
- water stresse0
- Outcome
- fruit growth and productione0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“fruit growth and production were unaffected by water stress”
t0“Capsicum chinense Jacq.”
Claim · model-written summary
Water stress increased fruit capsaicin concentration relative to controls, with an effect correlated with fruit age.
- Taxon
- Capsicum chinense Jacq.Capsicum chinenset0
- Organ / stage
- fruitse0
- Treatment
- stressed plantse0
- Outcome
- Capsaicine0
- Direction
- increasede0
- Qualifier
- correlated with fruit agee0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Capsaicin and dihydrocapsaicin concentrations increased in fruits of stressed plants compared with control plants, and this effect was correlated with fruit age”
t0“Capsicum chinense Jacq.”
Claim · model-written summary
Water stress increased fruit dihydrocapsaicin concentration relative to controls, with an effect correlated with fruit age.
- Taxon
- Capsicum chinense Jacq.Capsicum chinenset0
- Organ / stage
- fruitse0
- Treatment
- stressed plantse0
- Outcome
- dihydrocapsaicin concentrationse0
- Direction
- increasede0
- Qualifier
- correlated with fruit agee0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Capsaicin and dihydrocapsaicin concentrations increased in fruits of stressed plants compared with control plants, and this effect was correlated with fruit age”
t0“Capsicum chinense Jacq.”
Claim · model-written summary
Water stress reduced capsaicin synthase activity, depending on stress severity and fruit age.
- Taxon
- Capsicum chinense Jacq.Capsicum chinenset0
- Treatment
- water stresse0
- Gene
- capsaicin synthasee0
- Outcome
- capsaicin synthase activitye0
- Direction
- reducede0
- Qualifier
- stress severity and fruit agee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capsaicin synthase activity was reduced in response to water stress, and this effect depended on both stress severity and fruit age”
t0“Capsicum chinense Jacq.”
The same questions in other papers
drought · yield · Capsicum chinense (habanero)Results differ
1 paper in the same direction as this paper
- negative
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.