Abstract
Drought is a serious outcome of climate change reducing the productivity of forage species under arid and semi-arid conditions worldwide. Diethyl aminoethyl hexanoate (DA-6), a novel plant growth regulator, has proven to be involved in the amelioration of critical physiological functions in many agricultural crops under various abiotic stresses, but the role of the DA-6 in improving seed germination has never been investigated under drought stress. The present study was carried out to elucidate the impact of the DA-6 priming on seeds germination of white clover under drought stress. Results showed that seed priming with the DA-6 significantly mitigated the drought-induced reduction in germination percentage, germination vigor, germination index, seed vigor index, root length, shoot length, and fresh weight after 7 days of seed germination. The DA-6 significantly increased the endogenous indole-3-acetic acid, gibberellin, and cytokinin content with marked reduction in abscisic acid content in seedlings under drought stress. In addition, the DA-6 significantly accelerated starch catabolism by enhancing the activities of hydrolases contributing toward enhanced soluble sugars, proline content and ameliorated the antioxidant defense system to enhance the ability of reactive oxygen species scavenging under drought stress. Furthermore, exogenous DA-6 application significantly increased dehydrins accumulation and upregulated transcript levels of genes encoding dehydrins ( SK2, Y2SK, or DHNb ) during seeds germination under water deficient condition. These findings suggested that the DA-6 mediated seeds germination and drought tolerance associated with changes in endogenous phytohormones resulting in increased starch degradation, osmotic adjustment, antioxidants activity, and dehydrins accumulation during seed germination under water deficient condition.
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Claims 8
Claim · model-written summary
DA-6 priming mitigated drought-related reductions in germination and growth measures.
- Taxon
- white clover
Trifolium repenst0 - Treatment
- seed priming with the DA-6e0
- Outcome
- germination percentage, germination vigor, germination indexe0
- Direction
- mitigatede0
- Comparator
- drought-induced reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that seed priming with the DA-6 significantly mitigated the drought-induced reduction in germination percentage, germination vigor, germination index, seed vigor index, root length, shoot length, and fresh weight after 7 days of seed germination.”
t0“White Clover”
Claim · model-written summary
DA-6 increased root length, shoot length and fresh weight under drought.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- seed priming with the DA-6e0
- Outcome
- root length, shoot length, and fresh weighte0
- Direction
- mitigatede0
- Comparator
- drought-induced reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that seed priming with the DA-6 significantly mitigated the drought-induced reduction in germination percentage, germination vigor, germination index, seed vigor index, root length, shoot length, and fresh weight after 7 days of seed germination.”
t0“White Clover”
Claim · model-written summary
DA-6 increased IAA, gibberellin and cytokinin content.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6e0
- Outcome
- indole-3-acetic acid, gibberellin, and cytokinin contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DA-6 significantly increased the endogenous indole-3-acetic acid, gibberellin, and cytokinin content with marked reduction in abscisic acid content in seedlings under drought stress.”
t0“White Clover”
Claim · model-written summary
DA-6 reduced abscisic acid content.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6e0
- Outcome
- abscisic acid contente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DA-6 significantly increased the endogenous indole-3-acetic acid, gibberellin, and cytokinin content with marked reduction in abscisic acid content in seedlings under drought stress.”
t0“White Clover”
Claim · model-written summary
DA-6 accelerated starch catabolism through hydrolase activity.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6e0
- Gene
- hydrolasese0
- Outcome
- starch catabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the DA-6 significantly accelerated starch catabolism by enhancing the activities of hydrolases”
t0“White Clover”
Claim · model-written summary
DA-6 enhanced soluble sugars, proline and antioxidant defence.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6e1
- Outcome
- soluble sugars, proline contente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contributing toward enhanced soluble sugars, proline content and ameliorated the antioxidant defense system to enhance the ability of reactive oxygen species scavenging under drought stress.”
e1“Diethyl aminoethyl hexanoate (DA-6), a novel plant growth regulator”
t0“White Clover”
Claim · model-written summary
DA-6 increased dehydrin accumulation.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6 applicatione0
- Outcome
- dehydrins accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous DA-6 application significantly increased dehydrins accumulation and upregulated transcript levels of genes encoding dehydrins ( SK2, Y2SK, or DHNb ) during seeds germination under water deficient condition.”
t0“White Clover”
Claim · model-written summary
DA-6 upregulated SK2, Y2SK and DHNb transcripts.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- DA-6 applicatione0
- Gene
- SK2, Y2SK, or DHNbe0
- Outcome
- transcript levelse0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous DA-6 application significantly increased dehydrins accumulation and upregulated transcript levels of genes encoding dehydrins ( SK2, Y2SK, or DHNb ) during seeds germination under water deficient condition.”
t0“White Clover”
The same questions in other papers
seed treatment · growth · Trifolium repens (white clover)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- negative
7 papers more in this group
See all 11 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.