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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2023.107890
|2 doi
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|a pubmed24n1225.xml
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|a (DE-627)NLM35955153X
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|a (NLM)37454467
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|a (PII)S0981-9428(23)00401-1
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Xing, Xinghua
|e verfasserin
|4 aut
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|a α-naphthaleneacetic acid positively regulates soybean seed germination and seedling establishment by increasing antioxidant capacity, triacylglycerol mobilization and sucrose transport under drought stress
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.08.2023
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2023 Elsevier Masson SAS. All rights reserved.
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|a Drought stress is an important constraint for the germination of soybean (Glycine max [L.] Merr.) seeds and seedling establishment. A pot experiment was conducted to determine the effects of priming soybean seeds with 5 μM α-naphthaleneacetic acid (NAA) and the mechanism responsible for the induced tolerance of drought stress (soil relative water content of 55%). NAA priming inhibited drought-induced oxidative damage in seeds, and further analysis indicated that it induced an early spike in hydrogen peroxide content by the upregulation of abscisic acid-dependent GmRbohC2, resulting in an enhancement of antioxidant capacity. Moreover, NAA priming also improved the hydrolysis of triacylglycerol (TAG) to sucrose in stressed cotyledons by causing a 2- to 5-fold increase in the transcript levels of GmSDP1, GmACX2, GmMFP2, GmICL, GmMLS, GmGLI1, GmPCK1, GmFBPase1, GmSPS1 and GmSPS2. Consistently, it upregulated the expression levels of GmSUT1, GmCWINV1 and GmMST2 under drought stress, thus enhancing the transport of sucrose from cotyledons to embryonic axes, providing carbon skeletons and energy for axis growth. The seed germination percentage increased by 208.1% at 21 h after sowing, and seedling establishment percentage increased by 47.8% at 14 days after sowing. Collectively, the positive effects of NAA priming on seed germination and seedling establishment can be attributed to enhanced antioxidant ability in seeds, TAG mobilization in cotyledons and sucrose transport from cotyledons to embryonic axes under drought stress
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|a Journal Article
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|a Antioxidant defense
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|a Drought stress
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|a NAA priming
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|a Soybean
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|a Sucrose
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|a Triacylglycerol
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|a Antioxidants
|2 NLM
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|a 1-naphthaleneacetic acid
|2 NLM
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|a 33T7G7757C
|2 NLM
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| 650 |
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|a Sucrose
|2 NLM
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| 650 |
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|a 57-50-1
|2 NLM
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| 700 |
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|a Cao, Chunxin
|e verfasserin
|4 aut
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|a Li, Simeng
|e verfasserin
|4 aut
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|a Wang, Haorang
|e verfasserin
|4 aut
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|a Xu, Zejun
|e verfasserin
|4 aut
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|a Qi, Yujun
|e verfasserin
|4 aut
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|a Tong, Fei
|e verfasserin
|4 aut
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|a Jiang, Haidong
|e verfasserin
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|a Wang, Xing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 201(2023) vom: 31. Aug., Seite 107890
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:201
|g year:2023
|g day:31
|g month:08
|g pages:107890
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|u http://dx.doi.org/10.1016/j.plaphy.2023.107890
|3 Volltext
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