Abstract
Introduction: Passiflora tripartita var. mollissima (banana passionfruit) is one of the most promising exotic tropical fruits from the diversity of the Passifloraceae family in South America, because of its organoleptic properties and antioxidant activity. Objective: To evaluate the physiological and anatomical responses of banana passionfruit plants under water deficit to better understand the mechanisms that mitigate this stress and affect the production of crops subject to climate change and global warming. Methods: Three-month-old seedlings of banana passionfruit were subjected to a soil water deficit through an irrigation reduction at 70 % for 49 days under greenhouse conditions. Morphology (leaf area, height, and number of leaves) and physiological (stomatal conductance, Fv/Fm, total chlorophyll content) measurements were made through time, and after the irrigation treatments were measured biomass parameters and anatomical foliar traits. Results: The plants experienced a decrease in height, leaf area, number of leaves, leaf area index, and relative water content, that are common responses in plants subjected to reduced irrigation. Additionally, the plants exhibited certain mechanisms that can be attributed to water deficit tolerance such as higher root: shoot ratio, stomatal closing, an increase in stomatal density, a reduction in mesophyll tissue thickness, and a decrease in the number of vessels and its diameter as they enable the banana passionfruit to reduce water loss and decrease the probability of cavitation in xylem vessels. Conclusions: banana passionfruit plants could implement strategies against water scarcity, allowing them to survive and endure challenging environmental conditions
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Claims 8
Claim · model-written summary
Water deficit decreased height, leaf area and leaf number.
- Taxon
- Passiflora tripartita var. mollissima
Passiflora tripartita var. mollissimat0 - Treatment
- water deficite1
- Outcome
- height, leaf area, number of leavese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants experienced a decrease in height, leaf area, number of leaves, leaf area index, and relative water content”
t0“Passiflora tripartita var. mollissima”
e1“water deficit tolerance”
Claim · model-written summary
Water deficit decreased leaf area index and relative water content.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Treatment
- reduced irrigatione1
- Outcome
- leaf area index, and relative water contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants experienced a decrease in height, leaf area, number of leaves, leaf area index, and relative water content”
t0“Passiflora tripartita var. mollissima”
e1“reduced irrigation”
Claim · model-written summary
Water deficit increased the root to shoot ratio.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Treatment
- water deficite1
- Outcome
- root: shoot ratioe0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher root: shoot ratio”
t0“Passiflora tripartita var. mollissima”
e1“water deficit tolerance”
Claim · model-written summary
Water deficit caused stomatal closing.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Outcome
- stomatal closinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal closing”
t0“Passiflora tripartita var. mollissima”
Claim · model-written summary
Water deficit increased stomatal density.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Treatment
- water deficite1
- Outcome
- stomatal densitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in stomatal density”
t0“Passiflora tripartita var. mollissima”
e1“water deficit tolerance”
Claim · model-written summary
Water deficit reduced mesophyll tissue thickness.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Treatment
- water deficite1
- Outcome
- mesophyll tissue thicknesse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a reduction in mesophyll tissue thickness”
t0“Passiflora tripartita var. mollissima”
e1“water deficit tolerance”
Claim · model-written summary
Water deficit reduced vessel number and diameter.
- Taxon
- Passiflora tripartita var. mollissimaPassiflora tripartita var. mollissimat0
- Treatment
- water deficite1
- Outcome
- number of vessels and its diametere0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease in the number of vessels and its diameter”
t0“Passiflora tripartita var. mollissima”
e1“water deficit tolerance”
Claim · model-written summary
The anatomical responses were interpreted as reducing water loss and cavitation probability.
Verbatim
e0“they enable the banana passionfruit to reduce water loss and decrease the probability of cavitation in xylem vessels”