Abstract
Water stress is characterized by the lack or excess of water for a certain period, which can hinder the establishment and growth of different tree species. Thus, this study aims to evaluate growth and physiological changes in young Sapindus saponaria plants subjected to flooding, drought, rehydration and post-flooding recovery. For flooding, plants were kept in pots containing water 2 cm above the soil; for drought, plants were not irrigated for 25 days. At the end of the period, growth, height, dry and fresh mass of leaves, stem, and root measurements were assessed. Photosynthetic pigments and total soluble carbohydrate contents were also analyzed. Young S. saponaria plants showed reduced growth rates under drought conditions, and did not recover when rehydrated. In addition, drought caused a decrease in the chlorophyll a/b ratio and an increase in the total soluble carbohydrates content in the roots. Plants kept under flooding and post-flooding conditions did not show differences in growth and chlorophyll content, but a higher total soluble carbohydrates content was observed in the root of flooded plants. The study revealed young S. saponaria plants are intolerant to drought periods, showing low recovery capacity, but are tolerant to flooding and post-flooding periods.
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Claims 7
Claim · model-written summary
Drought reduced growth rates in young S. saponaria plants.
- Taxon
- S. saponaria
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Sapindus saponariae0 - Treatment
- drought conditionse0
- Outcome
- growth ratese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Young S. saponaria plants showed reduced growth rates under drought conditions”
Claim · model-written summary
Growth did not recover after rehydration of drought-stressed S. saponaria.
- Taxon
- Sapindus saponariaSapindus saponariat0
- Treatment
- rehydratede0
- Outcome
- did not recovere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and did not recover when rehydrated”
t0“Sapindus saponaria L.”
Claim · model-written summary
Drought decreased the chlorophyll a/b ratio in S. saponaria.
- Taxon
- Sapindus saponariaSapindus saponariat0
- Treatment
- droughte0
- Outcome
- chlorophyll a/b ratioe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought caused a decrease in the chlorophyll a/b ratio”
t0“Sapindus saponaria L.”
Claim · model-written summary
Drought increased root total soluble carbohydrate content in S. saponaria.
- Taxon
- Sapindus saponariaSapindus saponariat0
- Organ / stage
- rootse0
- Treatment
- droughte0
- Outcome
- total soluble carbohydrates contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought caused a decrease in the chlorophyll a/b ratio and an increase in the total soluble carbohydrates content in the roots”
t0“Sapindus saponaria L.”
Claim · model-written summary
Flooding did not change growth in S. saponaria.
- Taxon
- Sapindus saponariaSapindus saponariat0
- Treatment
- flooding and post-flooding conditionse0
- Outcome
- growth and chlorophyll contente0
- Direction
- did not show differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants kept under flooding and post-flooding conditions did not show differences in growth and chlorophyll content”
t0“Sapindus saponaria L.”
Claim · model-written summary
Flooded S. saponaria had higher root total soluble carbohydrate content.
- Taxon
- Sapindus saponariaSapindus saponariat0
- Organ / stage
- roote0
- Treatment
- floodede0
- Outcome
- total soluble carbohydrates contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher total soluble carbohydrates content was observed in the root of flooded plants”
t0“Sapindus saponaria L.”
Claim · model-written summary
The authors characterize young S. saponaria as drought-intolerant with low recovery capacity but tolerant of flooding and post-flooding periods.
- Taxon
- S. saponariaSapindus saponariae0
- Outcome
- intolerant to drought periodse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young S. saponaria plants are intolerant to drought periods, showing low recovery capacity, but are tolerant to flooding and post-flooding periods”