Abstract
BACKGROUND: Melatonin is considered a potential plant growth regulator to enhance the growth of plants and increase tolerance to various abiotic stresses. Nevertheless, melatonin's role in mediating stress response in different plant species and growth cycles still needs to be explored. This study was conducted to understand the impact of different melatonin concentrations (0, 50, 100, and 150 μM) applied as a soil drench to maize seedling under drought stress conditions. A decreased irrigation approach based on watering was exposed to maize seedling after drought stress was applied at 40-45% of field capacity. RESULTS: The results showed that drought stress negatively affected the growth behavior of maize seedlings, such as reduced biomass accumulation, decreased photosynthetic pigments, and enhanced the malondialdehyde and reactive oxygen species (ROS). However, melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings. CONCLUSIONS: Melatonin treatment also enhanced the stomatal traits, such as stomatal length, width, area, and the number of pores under drought stress conditions. Our data suggested that 100 μM melatonin application as soil drenching could provide a valuable foundation for improving plant tolerance to drought stress conditions.
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Claims 11
Claim · model-written summary
Drought stress reduced maize seedling biomass accumulation.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress negatively affected the growth behavior of maize seedlings, such as reduced biomass accumulation”
Claim · model-written summary
Drought stress decreased maize seedling photosynthetic pigments.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress negatively affected the growth behavior of maize seedlings, such as reduced biomass accumulation, decreased photosynthetic pigments”
Claim · model-written summary
Drought stress increased malondialdehyde and reactive oxygen species in maize seedlings.
- Treatment
- drought stresse0
- Outcome
- malondialdehyde and reactive oxygen species (ROS)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress negatively affected the growth behavior of maize seedlings, such as reduced biomass accumulation, decreased photosynthetic pigments, and enhanced the malondialdehyde and reactive oxygen species (ROS)”
Claim · model-written summary
Melatonin enhanced maize seedling growth under drought.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth”
e1“osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin increased photosynthetic pigments in drought-stressed maize seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin increased antioxidant enzyme activities in drought-stressed maize seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin increased relative water content in drought-stressed maize seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin increased osmoprotectants in drought-stressed maize seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin alleviated ROS-induced oxidative damage in drought-stressed maize seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application enhanced plant growth; alleviated ROS-induced oxidative damages by increasing the photosynthetic pigments, antioxidant enzyme activities, relative water content, and osmo-protectants of maize seedlings”
Claim · model-written summary
Melatonin enhanced stomatal length, width, area, and pore number under drought stress.
- Treatment
- Melatonin treatmente0
- Outcome
- stomatal length, width, area, and the number of porese0
- Direction
- enhancede0
- Qualifier
- under drought stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin treatment also enhanced the stomatal traits, such as stomatal length, width, area, and the number of pores under drought stress conditions.”
e1“osmo-protectants of maize seedlings”
Claim · model-written summary
The authors suggest 100 μM melatonin soil drenching to improve drought tolerance.
- Treatment
- 100 μM melatonin application as soil drenchinge0
- Outcome
- improving plant tolerance to drought stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 μM melatonin application as soil drenching could provide a valuable foundation for improving plant tolerance to drought stress conditions”
e1“maize seedling under drought stress conditions”
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