PLANT MOLECULAR BIOLOGY
·
2017
·Vol. 93
·期 6
·593-606
·
IF 3.356
Wang Jingjing,Wang Haibin,Ding Lian,Song Aiping,Shen Feng,Jiang Jiafu,Chen Sumei,Chen Fadi
Key message Auxin regulates chrysanthemum petal elongation by promoting cell elongation. Transcriptomic analysis shows that auxin signal transduction may connect with other transcription factors by TCPs to regulate chrysanthemum petal elongation. Abstract As an ornamental species, Chrysanthemum morifolium has high ornamental and economic value. Petal size is the primary factor that influences the ornamental value of chrysanthemum, but the mechanism underlying the development of C. morifolium petals remains unclear. In our study, we tracked the growth of petals and found that the basal region of ‘Jinba’ petals showed a higher elongation rate, exhibiting rapid cell elongation during petal growth. During petal elongation growth, auxin was demonstrated to promote cell elongation and an increase in cell numbers in the petal basal region. To further study the molecular mechanisms underlying petal growth, the RNA-seq (high-throughput cDNA sequencing) technique was employed. Four cDNA libraries were assembled from petals in the budding, bud breaking, early blooming and full blooming stages of ‘Jinba’ flower development. Analysis of differentially expressed genes (DEGs) showed that auxin was the most important regulator in controlling petal growth. The TEOSINTEBRANCHED 1, CYCLOIDEA and PCF transcription factor genes ( TCPs ), basic helix-loop-helix- encoding gene ( bHLH ), glutaredoxin-C ( GRXC ) and other zinc finger protein genes exhibited obvious up-regulation and might have significant effects on the growth of ‘Jinba’ petals. Given the interaction between these genes in Arabidopsis thaliana , we speculated that auxin signal transduction might exhibit a close relationship with transcription factors through TCPs. In summary, we present the first comprehensive transcriptomic and hormone analyses of C. morifolium petals. The results offer direction in identifying the mechanism underlying the development of chrysanthemum petals in the elongated phase and have great significance in improving the ornamental characteristics of C. morifolium via molecular breeding.
研究领域:
植物学
·
分子生物学
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DOI
PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Qian Wu,Guo Feng,Lifeng Miao,Zijuan Tang,Weihui Jiang,Jian Liang,Jianmin Liu
Mesoporous petal-like MgAl 2 O 4 spinel has been prepared by molten salt assisted nonhydrolytic sol–gel method. The influence of Mg/Al molar ratio (0.45, 0.50, 0.55, 0.60, 0.70 and 0.80) on the morphology and surface area of MgAl 2 O 4 was investigated. The results reveal that Mg/Al molar ratio has a significant influence on the morphology. At Mg/Al molar ratio of 0.7, the achieved petal-like MgAl 2 O 4 is highly uniformed in morphology, the surface area and pore volume reached maximum values of 141 m 2 g −1 and 0.24 cm 3 g −1 , respectively. These properties make it have promising applications in the catalyst support field.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 4
·714
·
IF 3.4
Su Liu,Liuxin Shi,Mengyun Liu,Wei Chen,Qiang Cheng,Xiuli Song
In recent years, textiles with antimicrobial properties have attracted more and more attention. As natural antimicrobial agents, essential oils’ potential application value lies in their ability to provide textiles with antimicrobial functions. In this paper, organic solvent extraction (n-hexane, petroleum ether, ethanol) and steam distillation were used to extract saffron petal essential oil (SPEO). It was found that organic solvent extraction (ethanol) had the highest extraction rate and the most apparent bacteriostatic effect. SPEO-Ms were prepared using the composite condensation method with gelatin and chitosan. The microstructure, encapsulation efficiency, slow-release performance, infrared spectrum, and thermal stability of the SPEO-Ms were evaluated. The results showed that the microencapsulated essential oil had good bacteriostatic properties. Antimicrobial cotton fabric was prepared by impregnating microcapsules onto cotton fibers. The effects of the microcapsules’ concentration on the whiteness, air permeability, moisture permeability, and bacteriological inhibition of the fabric were investigated. The results revealed that SPEO-Ms have the potential to be used as a new antimicrobial agent in textiles.Keywords:saffron flower petal essential oil;microcapsule;antimicrobial cotton fabric;cotton fabric
研究领域:
纺织科学
·
微生物学
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植物化学
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DOI
高影响因子
NEW PHYTOLOGIST
·
2022
·Vol. 237
·期 2
·483-496
·
IF 10.323
Chuyan Jiang,Yue Liang,Shuning Deng,Yang Liu,Haohao Zhao,Susu Li,Cai-Zhong Jiang,Junping Gao,Chao Ma
Summary In many plant species, petal abscission can be considered the final step of petal senescence. Cytokinins (CKs) are powerful suppressors of petal senescence; however, their role in petal abscission is ambiguous. Here, we observed that, in rose ( Rosa hybrida ), biologically active CK is accumulated during petal abscission and acts as an accelerator of the abscission process. Using a combination of reverse genetics, and molecular and biochemical techniques, we explored the roles of a LESION SIMULATING DISEASE1 (LSD1) family member Rh LOL1 interacting with a bHLH transcription factor Rh ILR3 in CK-induced petal abscission. Silencing Rh LOL1 delays rose petal abscission, while the overexpression of its ortholog Sl LOL1 in tomato ( Solanum lycopersicum ) promotes pedicel abscission, indicating the conserved function of LOL1 in activating plant floral organ abscission. In addition, we identify a bHLH transcription factor, Rh ILR3, that interacts with Rh LOL1. We show that Rh ILR3 binds to the promoters of the auxin signaling repressor auxin/indole-3-acetic acid ( Aux/IAA ) genes to inhibit their expression; however, the interaction of Rh LOL1 with Rh ILR3 activates the expression of the Aux/IAA genes including Rh IAA4-1 . Silencing Rh IAA4-1 delays rose petal abscission. Our results thus reveal a Rh LOL1– Rh ILR3 regulatory module involved in CK-induced petal abscission via the regulation of the expression of the Aux/IAA genes.
研究领域:
植物生物学
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分子遗传学
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植物生理学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Min Mo,Xingjia Bai,Zhonglin Liu,Zhimin Huang,Mengxue Xu,Lanyu Ma,Wenqin Lai,Qiufeng Mo,Songbo Xie,Yanming Li,Yifeng Huang,Ning Xiao,Yihua Zheng
Hypothesis: In the interfacial wetting boundary, the superhydrophobic surface is often damaged, and the anisotropic wettability of its surface has attracted many researchers’ attention. The “petal effect” surface has typical anisotropic wettability . We predict that under the dual conditions of structural defects and high impact velocity , the “petal effect” becomes more adhesive on the surface. Experiments: This study refers to the droplet state on rose petals, structural defects were constructed on the superhydrophobic surface. This paper studies the influence of macro-structural defects on the wettability change from natural to bionic “lotus effect” to “petal effect” in both static and dynamic angles. Findings: Macro defects significantly change the static contact angle of the superhydrophobic surface. The higher the impact velocity of the droplet, the higher the energy dissipation of the “petal effect” surface (DSHS), which improves the adhesion of the surface to the droplet and prolongs the contact time. It is found that the defect structure and high impact velocity will directly affect the deposition and desorption of droplets on the superhydrophobic surface, and they are both essential. This wetting dynamic law is very likely to be helpful in the quantitative design of defect structure scale for dynamic desorption of droplets on superhydrophobic surfaces.
研究领域:
材料科学
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表面工程学
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER ENGINEERING
·
2023
·Vol. 43
·期 3
·277-286
·
IF 2
Xiaoru Hao,Jun Xie,Yu Zhang,Wei Sheng,Haikun Zheng
This paper investigated anti-icing behavior and wettability of droplets on superhydrophobic polymercoatings between lotus effect and petal effect, which were prepared on surfaces of 2021 aluminum alloy with 1H, 1H, 2H, 2H-heptafluorodecyl (FAS-17). The prepared surfaces displayed excellent hydrophobicity with contact angles of 154.9° ± 1.5°and 139.8° ± 1.3°, while rolling angles are 4° ± 1.0° (lotus effect) and 30° ± 1.5° (petal effect). Thus, the present study focused on the different characterizations and the anti-icing potential of the superhydrophobic polymersurfaces were analyzed based on three parameters including the icing delay time, the crystallization temperature of water droplets, and contact time of impinging droplets on the cold superhydrophobic polymer coatings (−15 °C). Furthermore, the anti-icing of superhydrophobic coatings between lotus effect and petal effect with freezing time and crystallization temperature experimental phenomena were consistent with the thermodynamic analysis. It is also proved that the droplets have different bounce behavior on different polymercoating surfaces by droplet impact experiment. The study offers a comprehensive perspective on polymercoatings of different wetttablility for anti-icing behavior applications.
研究领域:
材料科学
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表面工程
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DOI
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2014
·Vol. 115
·期 17
·
IF 2.185
Li S. J.,Li D.,Jiang J. J.,Liu G. B.,Ma S.,Liu W.,Zhang Z. D.
Growth process and magnetic properties of PbO-type α-Fe x Se nanostructures with shape changing from nanocacti to nanopetals and then to nanosheets are investigated. With iron acetylacetonate [Fe(acac) 3 ] and Se powder as raw materials, the diffusion process of Fe atoms dominates the synthesis of α-Fe x Se nanocacti following phase transitions from FeSe 2 to Fe 3 Se 4 and finally to α-Fe x Se. When a mixed solution containing Se precursor and Fe(acac) 3 was used as the raw material, the formation of FeSe 2 and Fe 3 Se 4 can be avoided and, bended α-Fe x Se nanopetals can be prepared at 345 °C, which became flat nanosheets with a [001] preferred orientation as extending the reaction time from 1 to 4 h. No superconducting transition occurs in the α-Fe x Se (0.84 ≤ x ≤ 1.05) nanostructures due to composition heterogeneity or size effect. Magnetic measurements indicate that an antiferromagnetic component with a Néel point at about 45 K dominates the magnetic properties of the α-Fe 0.87 Se nanosheets.
研究领域:
材料科学
·
凝聚态物理
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产品关联
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-9
·
IF 4.011
Yang Yushan,He Haishan,Li Yougui,Qiu Jian
Robust, buoyant, superhydrophobic PVB/SiO 2 coatings were successfully formed on wood surface through a one-step solvothermal method and a nanoimprint lithography method. The as-prepared PVB/SiO 2 /wood specimens were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), thermogravimetric/differential thermogravimetric (TG–DTG) analyses. The superhydrophobic property and abrasion resistance of rose-petal-like wood were measured and assessed by water contact angle (WCA) and sand abrasion tests. The results show that PVB/SiO 2 /wood not only exhibited a robust superhydrophobic performance with a WCA of 160° but also had excellent durability and thermostability during the sand abrasion tests and against corrosive liquids. Additionally, the as-prepared PVB/SiO 2 /wood specimens show high buoyancy.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
PubMed
高影响因子
Micro & Nano Letters
·
2019
·Vol. 14
·期 10
·1069-1074
·
IF 0.975
Haimin Li,Wenjun Wang,Beijun Ang,Jianhua Xiong,Fengying Zhang,Weiping Chen,Juan Du
A simple, fast, and eco-friendly method for the biosynthesis of gold nanoparticles (AuNPs) using Lilium casa blanca petals as a reducing and protecting agent was reported. The heating time had been shortened to 30 min for biosynthesis of AuNPs, which only took 15 mg Lilium casa blanca petals powder. The biosynthetic AuNPs, which had a uniform particle size distribution, were in spherical with the average size of 5.933 ± 1.158 nm. In addition, the conversion rate of Au 3+ to Au 0 was quite high. Through the discussion on the nutrients' concentrations before and after the synthesis, it was found that sugars, alkaloids, flavonoids, and proteins were the reducing and stabilising agents. The biosynthetic AuNPs had good catalytic activity, taking the hydroboration of nitrophenol and methylene blue as examples. Catalytic reduction followed pseudo-first-order kinetics. Moreover, the apparent rate constant was a linear correlation with the concentrations of AuNPs. The normalised rate constant of the proposed AuNPs was higher than other reported AuNPs, which indicated the excellent catalytic activity. All the results foreshowed the wide range of applications of the biosynthetic AuNPs by Lilium casa blanca petals.
研究领域:
纳米生物学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Yihua Zheng,Chengchun Zhang,Jing Wang,Yan Liu,Chun Shen,Junfeng Yang
Hypothesis Bionics and dynamic interface wetting intensely appeal to many research communities due to their unique practical implications. The rose petals had a highly robust dynamic water-retaining capacity under heavy precipitation. We predicted that the roses became more “hydrophilic” at higher Weber numbers . Experiments Fresh rose petals were directly impacted by droplets, and facile artificial petal-like substrates and superhydrophobic substrates were used in the comparative analysis. The wetting dynamics of the droplet (e.g., topography, bounce dynamics, contact time, three-phase contact lines, and oscillations) were investigated when interacting with four selected target substrates. Findings The present work first time investigated the dynamic wetting rule of the sticky superhydrophobic substrates (SSHS). Simulated and experimental investigations confirmed that the unique coupling synergy between the pinning effect and the inhomogeneous micropapillaes resulted in lopsided contact line velocities, which remarkably suppressed the lateral oscillation and rebounding. This may be a new strategy when designing dynamic water-repellent surfaces and open a promising avenue for emerging areas such as super-efficiency energy conversion and harvesting.
研究领域:
材料科学
·
生物物理学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xin Li,Jin Wang,Yibo Zhao,Xuetong Zhang
Aerogels have been widely used in the fields like thermal insulation, energy storage, environmental remediation, catalysis, drug release, sensor, and cosmic dust collection, etc. Hydrophobic functionalization not only determines the surface energy and basic physical properties of the target aerogels but also be critical for their long-term stability due to their highly open-porous structures. However, there is still lack of facial and versatile methodologies for the hydrophobic functionalization of aerogels, especially for the nonsilica ones. Herein, two efficient fluorine-free strategies were developed to synthesize various hydrophobic and even superhydrophobic polyimide (PI) aerogels. First, superhydrophobic PI aerogels with contact angle higher than 150° were fabricated by the segregation self-assembly process between poly[4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride)-co-p-phenylene diamine] and poly[biphenyl-3,3′,3,4′-tetracarboxylic dianhydride-co-2,2′-dimethylbenzidine] (poly(BPDA-DMBZ)). These PI aerogels exhibited a lotus effect that water droplets could not wet the surface but could easily roll off. Second, various hydrophobic PI aerogels, including the well-documented superhydrophilic PI aerogels derived from DMBZ–BPDA and 4,4′-oxydianiline–BPDA, were synthesized by the density-induced hydrophilicity–hydrophobicity transition approach. These PI aerogels exhibited a petal effect that water droplets on the aerogel surface appeared spherical in shape, which could not roll off even when the aerogel was turned upside down. These two reported strategies might open new and straightforward ways to hydrophobic functionalization of other polymeric aerogel systems.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 22
·18483-18489
·
IF 3.289
Lin Ling,Chan Wang,Kai Zhang,Taotao Li,Lei Tang,Chaowei Li,Liangjie Wang,Yancui Xu,Qijun Song,Yagang Yao
Edge-oriented MoS2 nanopetals complexed with basal-oriented MoS2 thin films have been mildly grown through a simple atmospheric pressure chemical vapor deposition (APCVD) process with the reaction of MoO3 and S. Dense nanopetals with hexagonal structures exposed numerous chemically reactive edge sites. The roles of growth temperature, time and S/MoO3 mass ratio have been carefully investigated to tune the morphology and density of the as-grown products. Importantly, the carbon nanotube (CNT) films were used as substrates for growing MoS2 nanopetals. The MoS2/CNT composites, used directly as working electrodes, showed remarkable and stable electrocatalytic activity in the hydrogen evolution reaction (HER), as manifested with a low onset overpotential of ∼100 mV and a small Tafel slope of 49.5 mV per decade. The development of the MoS2/CNT electrode provides a promising way to fabricate other multifunctional electrodes.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）