Abstract
Floral signals mediate crucial plant-pollinator interactions thus impacting plant reproductive success, yet their responses to water scarcity induced by climate change remain poorly understood. We exposed Sinapis alba plants from populations along an aridity gradient to controlled irrigation treatments, measuring physiological responses, floral traits, volatile organic compounds (VOCs), pollinator behavior, and reproductive outcomes. While arid-origin populations exhibited enhanced drought tolerance, immediate water availability primarily shaped floral signals across all populations. Drought reduced floral display and induced complex shifts in VOC profiles — decreasing in pollinator-attracting benzenoids and terpenoids while increasing stress-related alkanes and green leaf volatiles. Pollinators favored plants with larger displays and higher VOC emissions but avoided physiologically stressed plants. Seed production reflected both plant condition and pollination success, with germination rates highest in seeds from arid origins. These results demonstrate how water limitation significantly alters the plant-pollinator communication system, ultimately affecting plant fitness. Our findings highlight the need for integrative approaches to understand and preserve plant-pollinator interactions under climate change, with direct implications for agricultural productivity in water-limited regions. • Arid-origin plant populations showed enhanced drought tolerance physiologically. • Water limitation altered floral signaling, reducing display and changing VOC profiles. • Drought increased stress VOCs while decreasing pollinator-attracting compounds. • Pollinators avoided stressed plants, preferring larger floral displays and higher VOC emissions. • Seeds from arid-origin populations showed highest germination success under water stress.
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Claims 9
Claim · model-written summary
Arid-origin populations had enhanced drought tolerance.
- Taxon
- Sinapis alba
Sinapis albae1 - Material
- arid-origin populationse0
- Outcome
- drought tolerancee0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While arid-origin populations exhibited enhanced drought tolerance”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Immediate water availability primarily shaped floral signals across populations.
- Taxon
- Sinapis albaSinapis albae1
- Treatment
- immediate water availabilitye0
- Outcome
- floral signalse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“immediate water availability primarily shaped floral signals across all populations”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Drought reduced floral display.
- Taxon
- Sinapis albaSinapis albae1
- Treatment
- Droughte0
- Outcome
- floral displaye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought reduced floral display”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Drought decreased pollinator-attracting benzenoids and terpenoids.
- Taxon
- Sinapis albaSinapis albae1
- Treatment
- Droughte0
- Outcome
- pollinator-attracting benzenoids and terpenoidse0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought reduced floral display and induced complex shifts in VOC profiles — decreasing in pollinator-attracting benzenoids and terpenoids”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Drought increased stress-related alkanes and green leaf volatiles.
- Taxon
- Sinapis albaSinapis albae2
- Treatment
- Droughte1
- Outcome
- stress-related alkanes and green leaf volatilese0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing stress-related alkanes and green leaf volatiles”
e1“Drought reduced floral display and induced complex shifts in VOC profiles”
e2“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Pollinators favored plants with larger floral displays and higher VOC emissions.
- Taxon
- Sinapis albaSinapis albae1
- Organ / stage
- larger displayse0
- Interactor
- Pollinatorse0pollinator
- Outcome
- Pollinators favored plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pollinators favored plants with larger displays and higher VOC emissions”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Pollinators avoided physiologically stressed plants.
- Taxon
- Sinapis albaSinapis albae1
- Interactor
- Pollinatorse0pollinator
- Outcome
- avoided physiologically stressed plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pollinators favored plants with larger displays and higher VOC emissions but avoided physiologically stressed plants”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Seed production reflected plant condition and pollination success.
- Taxon
- Sinapis albaSinapis albae1
- Organ / stage
- plant conditione0
- Outcome
- Seed productione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed production reflected both plant condition and pollination success”
e1“Sinapis alba plants from populations along an aridity gradient”
Claim · model-written summary
Seeds from arid origins had the highest germination rates.
- Taxon
- Sinapis albaSinapis albae1
- Material
- arid originse0
- Outcome
- germination ratese0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination rates highest in seeds from arid origins”
e1“Sinapis alba plants from populations along an aridity gradient”
The same questions in other papers
drought · ecology: diversity · Sinapis alba (white mustard)Results agree
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.