Effects of paclobutrazol on cultivars of Chinese bayberry (Myrica rubra) under salinity stress

Hu, Yifei; Yu, Wenqing; Liu, T.; Shafi, Mohammad; Song, Liguo; Du, Xuhua; Huang, Xinyi; Wu, Jia Sen

doi:10.1007/s11099-016-0658-z

Cited by 17 publications

(16 citation statements)

References 49 publications

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“…Our correlation analysis showed a significant and negative relation between H 2 O 2 levels and the activities of antioxidants. The protective roles of POD, APX, and CAT against oxidative burst have also been reported in paclobutrazol-treated barley [58], quinoa [19] C. roseus [26], and Chinese bayberry [59] under various environmental stress conditions. Our findings are also similar to the previous reports in which triazole treatments increased the activities of antioxidant enzymes and delayed the leaf senescence rate in different crops [5,14,60].…”

Section: Discussionmentioning

confidence: 81%

Paclobutrazol Application Favors Yield Improvement of Maize Under Semiarid Regions by Delaying Leaf Senescence and Regulating Photosynthetic Capacity and Antioxidant System During Grain-Filling Stage

Kamran

Ahmad

et al. 2020

Agronomy

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In the present study, we examined the potential role of paclobutrazol in delaying leaf senescence, in causing changes in the activities of antioxidants, and in the maintenance of photosynthetic activity during the senescence process, and, therefore, on the grain yield of maize under semiarid field conditions. Maize seeds were pretreated with 0 (CK), 200 (PS1), 300 (PS2), and 400 (PS3) mg paclobutrazol L−1. Our results indicated that elevated levels of reactive oxygen species (ROS) and higher accumulation of malondialdehyde (MDA) contents were positively associated with accelerated leaf senescence during the grain-filling periods. The leaf senescence resulted in the disintegration of the photosynthetic pigments and reduced the net photosynthetic rate after silking. However, the resultant ROS burst (O2− and H2O2) was lessened and the leaf senescence and chlorophyll degradation were evidently inhibited in leaves of paclobutrazol-treated maize plants, which was strongly linked with upregulated activities of antioxidant enzymes in treated plants. The enhanced chlorophyll contents and availability of a greater photosynthetic active green leaf area during the grain filling period facilitated the maintenance of higher photosynthetic rate, and light-harvesting efficiency of photosynthesis associated with photosystem II (PSII) resulted in higher kernel number ear−1 and thousand kernel weights, and thus increased the final grain yield. The average maize grain yield was increased by 18.8% to 55.6% in paclobutrazol treatments, compared to untreated control. Among the various paclobutrazol treatments, PS2 (300 mg L−1) treatment showed the most promising effects on enhancing the activities of antioxidative enzymes, delaying leaf senescence and improving the yield of maize. Thus, understanding this effect of paclobutrazol on delaying leaf senescence introduces new possibilities for facilitating yield improvement of maize under semiarid conditions.

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Section: Discussionmentioning

confidence: 81%

Paclobutrazol Application Favors Yield Improvement of Maize Under Semiarid Regions by Delaying Leaf Senescence and Regulating Photosynthetic Capacity and Antioxidant System During Grain-Filling Stage

Kamran

Ahmad

et al. 2020

Agronomy

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“…Gohari et al, (2015) suggested that antioxidant enzymes are one of the important biochemical factors for transition of vegetative growth to flowering. In support of increase in enzyme activities by paclobutrazol, Moradi et al, (2017) in pomegranate and Hu et al, (2017) in Chinese Bay berry reported increase in antioxidant enzymes by paclobutrazol under stress condition. Saxena et al, (2014) also implicated induction in certain antioxidant enzymes by paclobutrazol crucial for flower promotion in mango.…”

Section: Changes In Enzymatic Antioxidantsmentioning

confidence: 79%

Effects of Paclobutrazol on Non-enzymatic and Enzymatic Antioxidants during Floral Bud Development in Mango (Mangifera indica L.) cv. Totapuri

Bindu¹,

Upreti²,

Sathisha³

2018

Int.J.Curr.Microbiol.App.Sci

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“…Similarly, Asp was the precursor of Lys and Thr, and Gly was the Cys synthesis precursor, respectively 41 . As important compatible solutes, glutamate, aspartate and glycine play important roles in physiological adaptation to high external osmolarity 37 , 42 . Glycine addition can increase the survival rate of S .…”

Section: Resultsmentioning

confidence: 99%

Dynamic cell responses in Thermoanaerobacterium sp. under hyperosmotic stress

Zhu

Fan

Cha

et al. 2017

Sci Rep

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As a nongenetic engineering technique, adaptive evolution is an effective and easy-to-operate approach to strain improvement. In this work, a commercial Thermoanaerobacterium aotearoense SCUT27/Δldh-G58 was successfully isolated via sequential batch fermentation with step-increased carbon concentrations. Mutants were isolated under selective high osmotic pressures for 58 passages. The evolved isolate rapidly catabolized sugars at high concentrations and subsequently produced ethanol with good yield. A 1.6-fold improvement of ethanol production was achieved in a medium containing 120 g/L of carbon substrate using the evolved strain, compared to the start strain. The analysis of transcriptome and intracellular solute pools suggested that the adaptive evolution altered the synthesis of some compatible solutes and activated the DNA repair system in the two Thermoanaerobacterium sp. evolved strains. Overall, the results indicated the potential of adaptive evolution as a simple and effective tool for the modification and optimization of industrial microorganisms.

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Effects of paclobutrazol on cultivars of Chinese bayberry (Myrica rubra) under salinity stress

Cited by 17 publications

References 49 publications

Paclobutrazol Application Favors Yield Improvement of Maize Under Semiarid Regions by Delaying Leaf Senescence and Regulating Photosynthetic Capacity and Antioxidant System During Grain-Filling Stage

Paclobutrazol Application Favors Yield Improvement of Maize Under Semiarid Regions by Delaying Leaf Senescence and Regulating Photosynthetic Capacity and Antioxidant System During Grain-Filling Stage

Effects of Paclobutrazol on Non-enzymatic and Enzymatic Antioxidants during Floral Bud Development in Mango (Mangifera indica L.) cv. Totapuri

Dynamic cell responses in Thermoanaerobacterium sp. under hyperosmotic stress

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