Abstract
Melatonin (N-acetyl-5-methoxytryptamine, MT) can mitigate abotic stress, including drought stress on a number of crops. However, it is unclear whether and how seed priming with melatonin alleviates the effects of drought stress on seed germination and seedling growth of triticale ( Triticale hexaploide L.). In this study, we investigated the effects of seed priming with MT on seed germination, protective enzyme activity, superoxide anion, and hydrogen peroxide in triticale under PEG-6000 induced drought stress. Seed priming with 20 μM MT alleviated the adverse effects of PEG-6000 induced drought stress on seed germination and seedling growth. Triticale seeds primed with 20 μM MT exhibited improved germination potential, germination rate, germ and radicle length. Specifically, MT priming increased the germination rate by 57.67% compared with unprimed seeds. Seed priming with melatonin also alleviated the adverse effects of PEG-6000 induced drought stress on triticale seedlings. MT pretreatment with 20 μM significantly increased the net photosynthetic rate, transpiration rate, stomatal conductance, plant height, leaf area, and relative chlorophyll concentration, enhanced the activities of superoxide dismutase and peroxidase, and decreased reactive oxygen species (ROS) and malonaldehyde content in the seeds (germ and radicle) and seedlings (leaf and root). Collectively, these results suggest that seed priming with melatonin promotes ROS scavenging capacity and enhances energy supply and antioxidant enzyme activities to alleviate the adverse effects of drought stress in triticale.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
20 μM melatonin priming alleviated drought effects on triticale germination and seedling growth.
- Treatment
- Seed priming with 20 μM MTe0
- Outcome
- seed germination and seedling growthe0
- Direction
- alleviatede0
Not reportedTaxonComparator
Verbatim
e0“Seed priming with 20 μM MT alleviated the adverse effects of PEG-6000 induced drought stress on seed germination and seedling growth”
Claim · model-written summary
20 μM melatonin priming improved germination potential, germ length and radicle length.
- Taxon
- Triticale
×Triticosecalee0 - Treatment
- primed with 20 μM MTe0
- Outcome
- germination potential, germination rate, germ and radicle lengthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Triticale seeds primed with 20 μM MT exhibited improved germination potential, germination rate, germ and radicle length”
Claim · model-written summary
Melatonin priming increased germination rate by 57.67% versus unprimed seeds.
- Treatment
- MT priminge0
- Outcome
- germination ratee0
- Direction
- increasede0
- Value
- 57.67%e0
- Comparator
- unprimed seedse0
Not reportedTaxon
Verbatim
e0“MT priming increased the germination rate by 57.67% compared with unprimed seeds”
Claim · model-written summary
20 μM melatonin increased photosynthetic and gas exchange measures in drought-stressed triticale.
- Treatment
- MT pretreatment with 20 μMe0
- Outcome
- net photosynthetic rate, transpiration rate, stomatal conductancee0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“MT pretreatment with 20 μM significantly increased the net photosynthetic rate, transpiration rate, stomatal conductance”
Claim · model-written summary
20 μM melatonin increased plant height, leaf area and relative chlorophyll concentration.
- Outcome
- plant height, leaf area, and relative chlorophyll concentratione0
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“plant height, leaf area, and relative chlorophyll concentration, enhanced the activities”
Claim · model-written summary
20 μM melatonin enhanced superoxide dismutase and peroxidase activities.
Not reportedTaxonTreatmentComparator
Verbatim
e0“enhanced the activities of superoxide dismutase and peroxidase”
Claim · model-written summary
20 μM melatonin decreased reactive oxygen species and malonaldehyde in seeds and seedlings.
- Organ / stage
- seeds (germ and radicle) and seedlings (leaf and root)e0
- Outcome
- reactive oxygen species (ROS) and malonaldehyde contente0
- Direction
- decreasede0
Not reportedTaxonTreatmentComparator
Verbatim
e0“decreased reactive oxygen species (ROS) and malonaldehyde content in the seeds (germ and radicle) and seedlings (leaf and root)”
The same questions in other papers
seed treatment · growth · x Triticosecale (triticale)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →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.