Dissipation of the plant growth regulator hexanoic acid 2-(diethylamino) ethyl ester in pakchoi and soil

Zhang, Hongyan; Xie, Liuqing; Xu, Pengjun; Jiang, Shuren

doi:10.1080/03067310802002490

Cited by 23 publications

(10 citation statements)

References 9 publications

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“…Numerous elegant studies have demonstrated that DA-6, an artificial plant growth regulator, has a range of biological functions which can impact on field crop production (Zhang et al , 2008; Jiang et al , 2012; He et al , 2013; Salama et al , 2014; Jiang et al , 2015). The present investigation extended the practical uses of DA-6, demonstrating that DA-6 can reverse the loss of germination and seedling establishment activities associated with aging in soybean seeds.…”

Section: Discussionmentioning

confidence: 99%

“…Diethyl aminoethyl hexanoate (DA-6) is a novel artificial plant growth regulator, which can increase leaf chlorophyll content, and increase the photosynthetic rate and the rates of carbon and oxygen metabolism in plants (Yokoyama et al , 1982; Zhang et al , 2008; Jiang et al , 2012). In agriculture, DA-6 has been registered for use on a range of crops, including cabbage, pakchoi, cotton, tomato, soybean, peanut, and maize (Jiang et al , 2012).…”

Section: Introductionmentioning

confidence: 99%

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DA-6 promotes germination and seedling establishment from aged soybean seeds by mediating fatty acid metabolism and glycometabolism

Zhou

Chen

Si-hua

et al. 2018

Journal of Experimental Botany

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Soybean seeds contain higher concentrations of oil (triacylglycerol) and fatty acids than do cereal crop seeds, and the oxidation of these biomolecules during seed storage significantly shortens seed longevity and decreases germination ability. Here, we report that diethyl aminoethyl hexanoate (DA-6), a plant growth regulator, increases germination and seedling establishment from aged soybean seeds by increasing fatty acid metabolism and glycometabolism. Phenotypic analysis showed that DA-6 treatment markedly promoted germination and seedling establishment from naturally and artificially aged soybean seeds. Further analysis revealed that DA-6 increased the concentrations of soluble sugars, during imbibition of aged soybean seeds. Consistently, the concentrations of several different fatty acids in DA-6-treated aged seeds were higher than those in untreated aged seeds. Subsequently, qPCR analysis indicated that DA-6 induced the transcription of several key genes involved in the hydrolysis of triacylglycerol to sugars in aged soybean seeds. Furthermore, the activity in aged seeds of invertase, which catalyzes the hydrolysis of sucrose to form fructose and glucose, increased following DA-6 treatment. Altogether, DA-6 promotes germination and seedling establishment from aged soybean seeds by enhancing the hydrolysis of triacylglycerol and the conversion of fatty acids to sugars.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

DA-6 promotes germination and seedling establishment from aged soybean seeds by mediating fatty acid metabolism and glycometabolism

Zhou

Chen

Si-hua

et al. 2018

Journal of Experimental Botany

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“…Environmental stress not only inhibits chlorophyll synthesis but also promotes chlorophyll degradation ( Jin et al, 2019 ). Previous studies have shown that DA-6 can promote the synthesis of chlorophyll by increasing the conversion efficiency of ALA (aminolevulinic acid) to PBG (Porphobilinogen) and PBG to Uro III ( Zhang et al, 2008 ; Jiang et al, 2012 ). In this study, exogenous DA-6 significantly increased chlorophyll content in tomato leaves under LNT stress by promoting the expression of chlorophyll synthesis genes and suppressing the expression of chlorophyll degradation genes ( Figure 2 ), which in turn enhanced the photosynthetic efficiency of plants ( Figure 1 ).…”

Section: Discussionmentioning

confidence: 99%

“…Diethyl aminoethyl hexanoate (DA-6) is a plant growth regulator that has been applied to a wide range of agricultural crops. It promotes cell growth and division as well as protein and nucleic acid synthesis ( Zhang et al, 2008 ; Jiang et al, 2012 ). DA-6 also promotes germination and seedling establishment in aged soybean seeds by enhancing the hydrolysis of triacylglycerol and the conversion of fatty acids to sugars ( Zhou et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Exogenous DA-6 Improves the Low Night Temperature Tolerance of Tomato Through Regulating Cytokinin

Guan

et al. 2021

Front. Plant Sci.

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Low night temperature (LNT) causes environmental stress and has a severe and negative impact on plant growth and productivity. Synthetic elicitors can regulate plant growth and induce defense mechanisms from this type of stress. Here, we evaluated the effect of the exogenous growth regulator diethyl aminoethyl hexanoate (DA-6) in tomato leaf response to LNT stress. Our results showed that exogenous DA-6 activates the expression of chlorophyll synthesis and photosystem-related genes, and results in higher photosynthetic activity and chlorophyll production. Furthermore, DA-6 can regulate the synthesis of endogenous cytokinin (CTK) and the expression of decomposition genes to stabilize chloroplast structure, reduce oxidative damage, and maintain the photochemical activity of tomato leaves under LNT stress. DA-6 maintains a high level of ABA content and induces the expression of CBF genes, indicating that DA-6 may participate in the cold response signaling pathway and induce the expression of downstream low temperature response genes and accumulation of compatible osmolytes. This study unravels a mode of action by which plant growth regulators can improve low temperature tolerance and provides important considerations for their application to alleviate the harmful effects of cold stress.

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“…The dissipation half-lives of DA-6 are 1.1–2.2 days, 5.4–8.2 days and 1.5–1.9 days in pakchoi, in cotton, and in the soil, respectively [1]. Rapid degradation of DA-6 would be beneficial for the safe use of DA-6 [14]. Spraying DA-6 at the seedling stage can promote plant growth by enhancing photosynthesis and regulating hormone balance in maize and soybean [3].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analysis reveals the mechanism by which spraying diethyl aminoethyl hexanoate after anthesis regulates wheat grain filling

Wen

et al. 2019

BMC Plant Biol

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Background Diethyl aminoethyl hexanoate (DA-6), a plant growth regulator, has many beneficial effects on agricultural production. DA-6 has been applied to many plant species, but the molecular mechanism by which spraying DA-6 after anthesis regulates wheat grain filling is still unknown. Results In this study, we used four DA-6 concentrations: C0 (0 g/L), C2 (2 g/L), C4 (4 g/L), and C6 (6 g/L). The results showed that C4 and C6 led to a significantly higher 1000-grain weight and seed protein content than C0 during two wheat growing seasons. We then subjected samples at 24 days after anthesis (at which point the grain weight increased rapidly) to transcriptome analysis. Flag leaf (L), seed (S), and stem (T) samples under C6 and C0 were used for RNA-seq. The seed samples under C6 compared with C0 (S6vsS0) presented the most differentially expressed genes (DEGs; 2164). Plant hormone signal transduction ( p = 1.97 × 10 − 4 ), protein processing in the endoplasmic reticulum (ER; p = 9.04 × 10 − 11 ) and starch and sucrose metabolism ( p = 1.90 × 10 − 10 ) pathways were the most markedly enriched pathways in the flag leaves, stems, and seeds, respectively. DEGs involved in sucrose synthesis in the flag leaves, protein processing in ER in the stems, and starch synthesis and protein processing in ER in the seeds were significantly upregulated under C6 compared with C0. Conclusions Overall, we propose a model for spraying DA-6 after anthesis to regulate metabolic pathways in wheat, which provides new insights into wheat in response to DA-6. Electronic supplementary material The online version of this article (10.1186/s12870-019-1925-5) contains supplementary material, which is available to authorized users.

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Dissipation of the plant growth regulator hexanoic acid 2-(diethylamino) ethyl ester in pakchoi and soil

Cited by 23 publications

References 9 publications

DA-6 promotes germination and seedling establishment from aged soybean seeds by mediating fatty acid metabolism and glycometabolism

DA-6 promotes germination and seedling establishment from aged soybean seeds by mediating fatty acid metabolism and glycometabolism

Exogenous DA-6 Improves the Low Night Temperature Tolerance of Tomato Through Regulating Cytokinin

Transcriptome analysis reveals the mechanism by which spraying diethyl aminoethyl hexanoate after anthesis regulates wheat grain filling

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