Frontiers in Plant Science
·
2023
·
IF 5.6
Chen Qingbing,Gao Kang,Xu YuRan,Sun YaHui,Pan Bo,Chen Dongliang,Luo Chang,Cheng Xi,Liu Hua,Huang Conglin
Chrysanthemums are one of the top ten most well-known traditional famous flowers in China and one of the top four cut flowers worldwide, holding a significant position in landscape gardening. The cold temperatures of winter restrict the cultivation, introduction, and application of chrysanthemum, resulting in high costs for year-round production. This severely impacts the ornamental and economic value of chrysanthemum. Therefore, research on cold tolerance is of vital importance for guiding chrysanthemum production and application. With the development of genomics, transcriptomics, metabolomics, and other omics approaches, along with high-throughput molecular marker technologies, research on chrysanthemum cold tolerance has been continuously advancing. This article provides a comprehensive overview of the progress in cold tolerance research from various aspects, including chrysanthemum phenotype, physiological mechanisms, the forward genetics, molecular mechanisms, and breeding. The aim is to offer insights into the mechanisms of cold tolerance in chrysanthemum and provide reference for in-depth research and the development of new cold tolerance chrysanthemum varieties.
研究领域:
植物学
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遗传学
·
园艺学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Feng Tao,Liming Qin,Zhikui Wang,Qinmin Pan
Excellent self-healability and cold resistance are attractive properties for a portable/wearable energy-storage device. However, achieving the features is fundamentally dependent on an intrinsically self-healable electrolyte with high ionic conduction at low temperature. Here we report such a hydrogel electrolyte comprising sodium alginate cross-linked by dynamic catechol–borate ester bonding. Since its dynamically cross-linked alginate network can tolerate high-content inorganic salts, the electrolyte possesses excellent healing efficiency/cyclability but also high ionic conduction at both room temperature and low temperature. A supercapacitor with the multifunctional hydrogel electrolyte completely restores its capacitive properties even after breaking/healing for 10 cycles without external stimulus. At a low temperature of −10 °C, the capacitor is even able to maintain at least 80% of its room-temperature capacitance. Our investigations offer a strategy to assemble self-healable and cold-resistant energy storage devices by using a multifunctional hydrogel electrolyte with rationally designed polymeric networks, which has potential application in portable/wearable electronics, intelligent apparel or flexible robot, and so on.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Zuming Jiang,Lanlei Guo,Fuqing Yuan,Jinquan Wang,Xiancai Jiang
Simultaneously achieving good mechanical properties and high tolerance to hot and cold environments in hydrogel materials remains a challenge. In this work, ethylene glycol (EG) and cellulose nanofibrils (CNFs) were introduced into chitosan/poly(acrylamide–acrylic acid) double-network hydrogels to improve their toughness and tolerance to hot and cold environments. The effect of EG and CNFs on the properties of the hydrogels was studied respectively. EG increases the tolerance of the hydrogel to hot and cold environments. However, EG had a negative effect on the mechanical properties of hydrogels. In addition, CNFs substantially enhanced the strength and toughness of the chitosan/poly(acrylamide-acrylic acid)/EG organohydrogels. Finally, with the cooperative action of EG and CNFs, high-strength and tough organohydrogels (tensile strength = 0.71 MPa, elongation at break = 787.2%) with a high tolerance to hot and cold environments (−23 °C to 60 °C) were obtained. Further, EG enabled the organohydrogel to revert to its original state after drying at 60 °C. This paper provides a new route to prepare high-strength and tough organohydrogels with a high tolerance to hot and cold environments.
研究领域:
材料科学
·
生物材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PLoS One
·
2015
·Vol. 10
·期 3
·e0120695
·
IF 3.234
Yajing Guan,Zhan Li,Fei He,Yutao Huang,Wenjian Song,Jin Hu
Chilling stress is an important constraint for maize seed establishment in the field. In this study, a type of “on-off” thermoresponsive coating agent containing poly ( N -isopropylacrylamide- co -butylmethacrylate) (Abbr. P(NIPAm- co -BMA)) hydrogel was developed to improve the chilling tolerance of coated maize seed. The P(NIPAm- co -BMA) hydrogel was synthesized by free-radical polymerization of N-isopropylacrylamide (NIPAm) and butylmethacrylate (BMA). Salicylic acid (SA) was loaded in the hydrogel as the chilling resistance agent. SA-loaded P(NIPAm- co -BMA) was used for seed film-coating of two maize varieties, Huang C (HC, chilling-tolerant) and Mo17 (chilling-sensitive), to investigate the coated seed germination and seedling growth status under chilling stress. The results showed that the hydrogel obtained a phase transition temperature near 12°C with a NIPAM to MBA weight ratio of 1: 0.1988 (w/w). The temperature of 12°C was considered the “on-off” temperature for chilling-resistant agent release; the SA was released from the hydrogel more rapidly at external temperatures below 12°C than above 12°C. In addition, when seedlings of both maize varieties suffered a short chilling stress (5°C), higher concentrations of SA-loaded hydrogel resulted in increased germination energy, germination percentage, germination index, root length, shoot height, dry weight of roots and shoots and protective enzyme activities and a decreased malondialdehyde content in coated maize seeds compared to single SA treatments. The majority of these physiological and biochemical parameters achieved significant levels compared with the control. Therefore, SA-loaded P(NIPAm- co -BMA), a nontoxic thermoresponsive hydrogel, can be used as an effective material for chilling tolerance in film-coated maize seeds.
研究领域:
植物学
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农业科学
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材料科学
✓ 已验证
DOI
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Houhuang Tao,Xue Yu,Lanqing Li,Maria De Los Angeles,Na Wang
Hydrogel sensors are becoming increasingly important for electronic devices because of their flexibility, versatility, and high sensitivity, especially in applications that necessitate compatibility with human skin. However, creating hydrogel sensors that maintain high toughness and antifreeze properties in extreme cold conditions continues to be a challenge. This study introduces phytic acid (PA) into a hyperbranched polyamide (HBP)/cellulose nanofiber (CNF) interacting network to develop a freezing-resistant, high-toughness hydrogel with sustained electrical conductivity (HBP/CNF-PA). The terminal amino groups of the HBP enhance hydrogen bonding, thereby improving the mechanical strength and conductivity of the hydrogel. The resulting HBP/CNF-PA hydrogels exhibit a tensile strength of 219.7 kPa, a compressive strength of 0.87 MPa, and dissipate energy at a rate of 795 kJ·m -3 , along with a conductivity of 0.45 S·cm -1 and exceptional frost resistance, extending down to -40°°C, due to the ionization induced by PA. Hydrogels were utilized to create flexible sensors with a sensitivity of up to 1.34 V·g -1 . The sensors detect signals with a time interval of just 197ms and 215ms, capable of identifying changes in relative resistance caused by wrist flexion, gestures, and voice movements.
研究领域:
材料科学
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纳米技术
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传感器
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高分子科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Jiayue Jin,Zihan Cai,Weinan Huang,Jiahao Zhong,Di Wu,Chen Chen,Bangdi Liu,Yanna Shi,Xian Li,Kunsong Chen
Loquat fruit is vulnerable to postharvest chilling lignification. Fumigation with methyl jasmonate (MeJA) could inhibit the lignification, but is inefficient. The present study developed nanoparticles encapsulated with MeJA (MeJA@NPs) with high encapsulation efficiency (94.83 %) and 30 d sustained release capability. Then, a transparent, edible, in situ coating was prepared by blending a gelatin/pullulan solution with MeJA@NPs. The coating could continuously inhibit chilling lignification of loquat fruit, where the firmness increase and lignin accumulation were reduced by 82.7 % and 52.3 % respectively after 6 d of storage. Further analysis of the inhibition mechanism showed that the coating suppressed the peroxidase activity, thereby blocking lignin polymerization. Besides, the coating could also enhance the antioxidant capacity of fruits via activating cinnamate 4-hydroxylase and 4-coumarate: CoA ligase and upregulating the superoxide dismutase, catalase, and ascorbate peroxidase activities. In conclusion, our work provides a novel approach of in situ nanoparticle coating on fruits for postharvest preservation.
研究领域:
采后生理学
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食品科学与技术
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农业纳米技术
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植物生物化学
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园艺科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2020
·Vol. 16
·期 13
·3319-3324
·
IF 3.14
Guangfeng Wu,Kaiyun Jin,Li Liu,Huixuan Zhang
Self-healing hydrogels as renewable materials have attracted significant attention recently. However, traditional self-healing hydrogels require a long time for self-healing and cannot be used at low temperatures. Besides, their poor biocompatibility limits the application of hydrogels. Herein, we have prepared a hydrogel composed of polyvinyl alcohol (PVA) and modified sodium alginate. Due to the dynamic recombination of borate bonds, these hydrogels show a strong self-healing ability, with the shortest self-healing time up to 15 seconds. Also, glycerin (GI) was added into the hydrogel to increase the cold resistance of the hydrogel. At −25 °C, the hydrogel still displayed good frost resistance and elasticity. NaCl and other inorganic salts were added to endow the hydrogel with good electrical conductivity. The hydrogel also had good skin-like properties and could activate the capacitive screen of an electronic device.
研究领域:
材料科学
·
高分子化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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