Abstract
BACKGROUND: Climate change exacerbates abiotic stresses, which are expected to intensify their impact on crop plants. Drought, the most prevalent abiotic stress, significantly affects agricultural production worldwide. Improving eggplant varieties to withstand abiotic stress is vital due to rising drought from climate change. Despite the diversity of wild eggplant species that thrive under harsh conditions, the understanding of their drought tolerance mechanisms remains limited. In the present study, we used chlorophyll fluorescence (ChlaF) imaging, which reveals a plant's photosynthetic health, to investigate desiccation tolerance in eggplant and its wild relatives. Conventional fluorescence measurements lack spatial heterogeneity, whereas ChlaF imaging offers comprehensive insights into plant responses to environmental stresses. Hence, employing noninvasive imaging techniques is essential for understanding this heterogeneity. RESULTS: Desiccation significantly reduced the leaf tissue moisture content (TMC) across species. ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence. PSII functions declined gradually in S. macrocarpum and S. torvum, unlike those in other species, which exhibited abrupt declines after 54 h of desiccation. However, after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively. Conversely, the susceptible species S. gilo and S. sisymbriifolium exhibited a 50% reduction in PSII function at an early stage of 50% RWC, whereas in S. melongena, this reduction occurred at 40% RWC. CONCLUSION: Overall, our study revealed notably greater leaf desiccation tolerance, especially in S. macrocarpum, S. torvum, and S. indicum, attributed to sustained PSII efficiency at low TMC levels, indicating that these species are promising sources of drought tolerance.
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Claims 10
Claim · model-written summary
Desiccation significantly reduced leaf tissue moisture content across eggplant species.
- Taxon
- wild eggplant speciest0
- Treatment
- Desiccatione1
- Outcome
- leaf tissue moisture content (TMC)e1
- Direction
- reducede1
Not reportedComparator
Verbatim
t0“wild eggplant species”
e1“Desiccation significantly reduced the leaf tissue moisture content (TMC) across species”
Claim · model-written summary
Solanum macrocarpum showed greater photosystem II efficiency after 54 h of desiccation, with sustained fluorescence.
- Taxon
- S. macrocarpume2
- Treatment
- 54 h of desiccatione2
- Outcome
- photosystem II (PSII) efficiencye2
- Direction
- greatere2
- Qualifier
- sustained fluorescencee2
Not reportedComparator
Verbatim
t0“wild eggplant species”
e2“ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence”
Claim · model-written summary
Solanum torvum showed greater photosystem II efficiency after 54 h of desiccation.
- Taxon
- S. torvume2
- Treatment
- 54 h of desiccatione2
- Outcome
- photosystem II (PSII) efficiencye2
- Direction
- greatere2
Not reportedComparator
Verbatim
t0“wild eggplant species”
e2“ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence”
Claim · model-written summary
Solanum indicum showed greater photosystem II efficiency after 54 h of desiccation.
- Taxon
- S. indicume2
- Treatment
- 54 h of desiccatione2
- Outcome
- photosystem II (PSII) efficiencye2
- Direction
- greatere2
Not reportedComparator
Verbatim
t0“wild eggplant species”
e2“ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence”
Claim · model-written summary
PSII functions declined gradually in S. macrocarpum and S. torvum, unlike in other species.
Verbatim
t0“wild eggplant species”
e3“PSII functions declined gradually in S. macrocarpum and S. torvum, unlike those in other species, which exhibited abrupt declines after 54 h of desiccation”
Claim · model-written summary
Solanum macrocarpum kept PSII efficiency above 50% of its initial quantum yield at 35% leaf RWC after 54 h.
Verbatim
t0“wild eggplant species”
e4“after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively”
Claim · model-written summary
Solanum torvum showed a 50% decrease in PSII efficiency at 31% RWC after 54 h.
Verbatim
t0“wild eggplant species”
e4“after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively”
Claim · model-written summary
Solanum indicum showed a 50% decrease in PSII efficiency at 33% RWC after 54 h.
Verbatim
t0“wild eggplant species”
e4“after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively”
Claim · model-written summary
The susceptible species S. gilo and S. sisymbriifolium showed a 50% reduction in PSII function at an early stage of 50% RWC.
Verbatim
t0“wild eggplant species”
e5“the susceptible species S. gilo and S. sisymbriifolium exhibited a 50% reduction in PSII function at an early stage of 50% RWC, whereas in S. melongena, this reduction occurred at 40% RWC”
Claim · model-written summary
Solanum melongena showed the same 50% reduction in PSII function, at 40% RWC.
Verbatim
t0“wild eggplant species”
e5“the susceptible species S. gilo and S. sisymbriifolium exhibited a 50% reduction in PSII function at an early stage of 50% RWC, whereas in S. melongena, this reduction occurred at 40% RWC”
The same questions in other papers
drought · quality: grain · Solanum melongena (eggplant)Positive and negative results
1 in the opposite direction
- positive
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.