Abstract
Heat stress caused a stagnation in the growth and development of Passiflora edulis Sims. To investigate the effects of high-temperature stress, this study subjected P. edulis to 40 °C treatment for different durations; the changes in chlorophyll content, chlorophyll fluorescence parameters, photosynthetic parameters, transcriptome profiles, and photosynthesis-related genes of P. edulis under high-temperature stress were analyzed. The results showed that after 5 h of heat stress, the chlorophyll content of the leaves decreased by 31%, variable fluorescence/maximum fluorescence (Fv/Fm) decreased by 26.91%, photochemical performance index (PIabs) by 99.28%, comprehensive performance index (PItotal) by 94.20%, light energy absorbed per unit area (ABS/CSm) by 13.56%, light energy captured per unit area (TRo/CSm) by 17.90% and quantum yield of electron transfer per unit area (ETo/CSm) by 92.61%. The net photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) decreased by 47%, 41% and 38%, respectively, while intercellular CO2 concentration (Ci) increased by 1.34 times. Transcriptome sequencing results of P. edulis under heat stress identified 2336 differentially expressed genes (DEGs), which were significantly enriched in pathways including chloroplast function and plant hormone signal transduction. GO enrichment analysis demonstrated that DEGs were significantly enriched in terms related to catalytic activity and chloroplast components. Concurrently, KEGG pathway analysis revealed that carbon fixation in photosynthetic organisms was among the key pathways showing significant enrichment of these DEGs. The expression levels of photosynthesis-related genes, including PePSAE, PeMADs, PebHLH, PeFAR1, PePSBS, PePnsB4, PebZIP and PeC2H2, exhibited a significant increase after 3 h of high-temperature stress and rapidly declined following 5 h. These findings lay a foundation for further research on the high-temperature stress response mechanism and photosynthetic regulation of heat tolerance in P. edulis.
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Claims 16
Claim · model-written summary
Heat stress stagnated growth and development.
- Taxon
- Passiflora edulis Sims.
Passiflora edulise0 - Treatment
- Heat stresse0
- Outcome
- growth and developmente0
- Direction
- stagnatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat stress caused a stagnation in the growth and development of Passiflora edulis Sims.”
Claim · model-written summary
After 5 h heat stress, leaf chlorophyll content fell 31%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Organ / stage
- leavese0
- Treatment
- heat stresse0
- Outcome
- chlorophyll contente0
- Direction
- decreasede0
- Value
- 31%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after 5 h of heat stress, the chlorophyll content of the leaves decreased by 31%”
t0“Passiflora edulis”
Claim · model-written summary
After 5 h heat stress, Fv/Fm fell 26.91%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- variable fluorescence/maximum fluorescence (Fv/Fm)e0
- Direction
- decreasede0
- Value
- 26.91%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variable fluorescence/maximum fluorescence (Fv/Fm) decreased by 26.91%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
PIabs fell 99.28%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- photochemical performance index (PIabs)e0
- Direction
- decreaseinferrede0
- Value
- 99.28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photochemical performance index (PIabs) by 99.28%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
PItotal fell 94.20%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- comprehensive performance index (PItotal)e0
- Direction
- decreaseinferrede0
- Value
- 94.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“comprehensive performance index (PItotal) by 94.20%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
ABS/CSm fell 13.56%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- light energy absorbed per unit area (ABS/CSm)e0
- Direction
- decreaseinferrede0
- Value
- 13.56%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light energy absorbed per unit area (ABS/CSm) by 13.56%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
TRo/CSm fell 17.90%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- light energy captured per unit area (TRo/CSm)e0
- Direction
- decreaseinferrede0
- Value
- 17.90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light energy captured per unit area (TRo/CSm) by 17.90%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
ETo/CSm fell 92.61%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- quantum yield of electron transfer per unit area (ETo/CSm)e0
- Direction
- decreaseinferrede0
- Value
- 92.61%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quantum yield of electron transfer per unit area (ETo/CSm) by 92.61%”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
Net photosynthetic rate fell 47%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- net photosynthetic rate (Pn)e0
- Direction
- decreasede0
- Value
- 47%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) decreased by 47%, 41% and 38%, respectively”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
Transpiration rate fell 41%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- transpiration rate (Tr)e0
- Direction
- decreasede0
- Value
- 41%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transpiration rate (Tr) and stomatal conductance (Gs) decreased by 47%, 41% and 38%, respectively”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
Stomatal conductance fell 38%.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- stomatal conductance (Gs)e0
- Direction
- decreasede0
- Value
- 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal conductance (Gs) decreased by 47%, 41% and 38%, respectively”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
Intercellular CO2 concentration increased 1.34 times.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- Heat Stresst0
- Outcome
- intercellular CO2 concentration (Ci)e0
- Direction
- increasede0
- Value
- 1.34 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercellular CO2 concentration (Ci) increased by 1.34 times.”
t0“Passiflora edulis Under Heat Stress”
Claim · model-written summary
Heat-stressed plants had 2336 differentially expressed genes with enrichment in chloroplast and hormone pathways.
- Taxon
- P. edulisPassiflora edulise0
- Treatment
- heat stresse0
- Outcome
- differentially expressed genes (DEGs)e0
- Value
- 2336e0
- Qualifier
- chloroplast function and plant hormone signal transductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcriptome sequencing results of P. edulis under heat stress identified 2336 differentially expressed genes (DEGs), which were significantly enriched in pathways including chloroplast function and plant hormone signal transduction.”
Claim · model-written summary
DEGs were enriched in catalytic activity and chloroplast component terms.
- Taxon
- Passiflora edulisPassiflora edulist0
- Outcome
- DEGse0
- Qualifier
- catalytic activity and chloroplast componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GO enrichment analysis demonstrated that DEGs were significantly enriched in terms related to catalytic activity and chloroplast components.”
t0“Passiflora edulis”
Claim · model-written summary
Carbon fixation was a significantly enriched KEGG pathway.
- Taxon
- Passiflora edulisPassiflora edulist0
- Outcome
- carbon fixation in photosynthetic organismse0
- Qualifier
- significant enrichmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carbon fixation in photosynthetic organisms was among the key pathways showing significant enrichment of these DEGs.”
t0“Passiflora edulis”
Claim · model-written summary
Photosynthesis gene expression increased at 3 h then declined at 5 h.
- Taxon
- Passiflora edulisPassiflora edulist0
- Treatment
- high-temperature stresse0
- Outcome
- expression levels of photosynthesis-related genese0
- Direction
- increasee0
- Qualifier
- rapidly declined following 5 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression levels of photosynthesis-related genes, including PePSAE, PeMADs, PebHLH, PeFAR1, PePSBS, PePnsB4, PebZIP and PeC2H2, exhibited a significant increase after 3 h of high-temperature stress and rapidly declined following 5 h.”
t0“Passiflora edulis”
The same questions in other papers
heat · growth · Passiflora edulis (passion fruit)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.