Publications by authors named "Qiang Bian"

The development of adsorbents for ammonia capture and separation is a challenging task, with significant industrial relevance. We report herein, for the first time, open aluminophosphate frameworks for on-demand ammonia adsorption. Under ambient conditions, the AlPO-18 molecular sieve exhibits exceptional dynamic ammonia uptake of 3.

View Article and Find Full Text PDF

Background: Phytopathogenic fungi pose a severe threat to global agriculture, and the emergence of drug-resistant strains underscores the urgent need for novel fungicides. Tavaborole (AN2690), a clinically approved benzoxaborole antifungal, suppresses fungal growth by selectively targeting leucyl-tRNA synthetase (LeuRS) through covalent binding-a unique mode of action. In this study, we designed and synthesized a series of novel tavaborole derivatives featuring substituted aniline moieties.

View Article and Find Full Text PDF

The development of nanopesticides with minimized carriers (NMCs) through prodrug design and molecular self-assembly represents a transformative strategy for enhancing pesticide utilization efficiency and addressing global food security challenges. As a proof of concept, we developed A12@DES, a water-based nanodelivery system that combines a target-specific pesticide with a deep eutectic solvent (DES). The system utilizes a laccase inhibitor (A12, structurally optimized from lead compound PMDD-5Y) to self-assemble into monodisperse nanospheres (∼160 nm diameter) with an alkaline phosphatase (ALP)-responsive DES matrix.

View Article and Find Full Text PDF

Pesticides are crucial for global food security, but improving their efficient use to reduce environmental losses remains a key challenge for sustainable agriculture. One promising solution is enhancing pesticide adhesion to hydrophobic waxy leaf surface. Inspired by the dynamics of pinball machines, it is developed sprayable short-fiber carriers composed of biodegradable poly(3-hydroxybutyrate-4-hydroxybutyrate) using electrospinning technique and aminolysis.

View Article and Find Full Text PDF

This paper studied the effect of a new type of nano-pesticide on the control of rice blast (Magnaporthe oryzae) disease. In this study, AZOX/CS-graft-SA (azoxystrobin/chitosan-salicylic acid) nanoformulations were prepared, and the inhibitory effects of different concentrations on rice blast fungus and effects on rice growth and development were determined. The results showed all three drugs could effectively inhibit fungal growth, and the higher the concentration, the more significant the effect.

View Article and Find Full Text PDF

Kiwifruit, a nutritious fruit consumed globally, is affected by kiwifruit bacterial canker (KBC) caused by Pseudomonas syringae pv. actinidiae (Psa), which is a major biotic stress that adversely impacts its cultivation and production. KBC control is still challenging owing to the evolution of resistant populations of Psa, the environmental risks associated with copper bactericides, and lack of effective bactericides.

View Article and Find Full Text PDF

Background: Pongamol is a flavonoid natural product containing a 1,3-dicarbonyl structure, which has various biological activities and plays an important role as the main skeleton in new drug development. 1,3-dicarbonyl compounds are not only widely used as synthetic building blocks in many organic reactions, but also commonly found in natural products and active molecules in pharmaceuticals. Sixty-one dicarbonyl derivatives were designed and synthesized using the 1,3-dicarbonyl active fragment as a structural unit and their antifungal activities against six agricultural plant pathogens were determined.

View Article and Find Full Text PDF

Fungal chitin deacetylase (CDA) plays a crucial role in pathogen-plant interactions, which is regarded as an innovative and promising target for fungicides. In this study, a pharmacophore-based virtual screening strategy was employed to identify compounds and as potent inhibitors against f. sp.

View Article and Find Full Text PDF

Background: Weeds are a serious problem in worldwide agricultural production. Natural products are a notable source for discovering new lead compounds. Phloretin is a dihydrochalcone compound which was discovered in 1835 and named after its concentrated content in roots, stems or bark of fruits.

View Article and Find Full Text PDF

Melatonin is a natural hormone that has functions such as circadian rhythm regulation, neuroregulation and cardiac protection, as well as antifungal activity. In this study, two series of melatonin derivatives containing a semicarbazide or a thiosemicarbazide group were designed and synthesized. The antifungal screening results indicated that compound III-9 exhibited a broad antifungal spectrum against six phytopathogenic fungi at 50 µg/mL, with over 60% growth inhibition, and this is highlighted by its inhibition rates of 80.

View Article and Find Full Text PDF

LeuRS and PPO are important targets in the development of green pesticides; novel diphenyl-(thio)ether-containing benzoxaborole derivatives were designed and synthesized as novel dual-target enzyme inhibitors; their antifungal activities against six kinds of common plant pathogens in vitro and their herbicidal activities against purslane and barnyard grass were studied. Most of the target compounds showed excellent antifungal activity against six kinds of plant pathogenic fungi in vitro, and this is highlighted by compounds and , both displayed 100.0% inhibition effects against three kinds of the tested plant pathogenic fungi under the concentrations of 50.

View Article and Find Full Text PDF

, a highly destructive global pest, infests a wide range of plant species, including crucial food crops and ornamental plants. Effective control methods for this pest remain limited. Chitin synthase (CHS) is a key enzyme in the biosynthesis of chitin, which is essential for the growth and development of arthropods.

View Article and Find Full Text PDF
Article Synopsis
  • Two new harziane diterpenes and five previously undescribed cyclonerane sesquiterpenes were identified from a b-3 extract, alongside three known compounds.
  • Structural analysis was performed using HRESIMS and NMR techniques, confirming the absolute configuration of one compound through additional methods like ECD calculation.
  • The isolated compounds demonstrated significant antifungal activity, with one compound achieving 100% inhibition of certain pathogenic fungi and showing potential for biopesticide development.
View Article and Find Full Text PDF

Compounds containing N-pyridylpyrazole motif have aroused interest and brought about research hotspots due to their highly-efficient insecticidal activity. The fungicidal potential of N-pyridylpyrazole derivatives has gradually been disclosed in recent years. To discover new agrochemicals with poly-heterocyclic features, a series of novel triazole thione/thioether derivatives containing pyridylpyrazole motif (8-11) was synthesized.

View Article and Find Full Text PDF

Background: Fungal diseases present a significant threat to global agriculture, necessitating the development of new, safe, and effective fungicides. Existing fungicides face resistance and health risks, prompting the synthesis of novel compounds. Researchers have synthesized aldehyde-based thiourea and thiazolyl hydrazine derivatives, evaluating their antifungal activities to identify impactful pesticide molecules.

View Article and Find Full Text PDF

A series of 2-(trifluoromethyl)-4-hydroxyquinoline derivatives were designed and synthesized with introduction of the antibacterial fragment amino alcohols, and their antibacterial activity against plant phytopathogenic bacteria was evaluated for the development of quinoline bactericides. It is worth noting that compound exhibited excellent antibacterial activity with a minimum inhibitory concentration (MIC) value of 3.12 μg/mL against ().

View Article and Find Full Text PDF

Introduction: Rhizoctonia solani Kühn is a pathogen causing rice sheath blight (ShB). Ammonium transporter 1 (AMT1) promotes resistance of rice to ShB by activating ethylene signaling. However, how AMT1 activates ethylene signaling remains unclear.

View Article and Find Full Text PDF

Background And Objectives: Drug-coated balloons (DCBs) have exhibited promising results in coronary and peripheral artery diseases, but conclusive evidence is lacking in intracranial vasculature. We assessed the safety and efficacy of DCBs vs stent angioplasty for symptomatic intracranial atherosclerotic stenosis (sICAS) and initially identified patients who might have benefited most from DCB treatment.

Methods: A single-center, retrospective cohort study was conducted from June 2021 to May 2022 with 154 patients with sICAS divided into 2 treatment groups: a DCB group (with or without remedial stenting, n = 47) and a stent group (n = 107).

View Article and Find Full Text PDF
Article Synopsis
  • * The structures of these compounds were characterized using advanced techniques like HRESIMS, NMR spectroscopy, and ECD analysis.
  • * The compounds were tested for antifungal activity, with compound 1 showing 51% inhibition against the pathogenic fungus Sclerotinia sclerotiorum at a concentration of 50 μg/mL.
View Article and Find Full Text PDF

Auxins and their analogs are widely used to promote root growth, flower and fruit development, and yield in crops. The action characteristics and application scope of various auxins are different. To overcome the limitations of existing auxins, expand the scope of applications, and reduce side effects, it is necessary to screen new auxin analogs.

View Article and Find Full Text PDF

Bone marrow stromal cell antigen 2 (BST2) is a type II transmembrane protein that serves critical roles in antiretroviral defense in the innate immune response. In addition, it has been suggested that BST2 is highly expressed in various types of human cancer and high BST2 expression is related to different clinicopathological parameters in cancer. The molecular mechanism underlying BST2 as a potential tumor biomarker in human solid tumors has been reported on; however, to the best of our knowledge, there has been no review published on the molecular mechanism of BST2 in human solid tumors.

View Article and Find Full Text PDF

Prostate cancer is the second incidence of malignant tumors in men worldwide. Its incidence and mortality are increasing year by year. Enhanced expression of Cav1 in prostate cancer has been linked to both proliferation and metastasis of cancer cells, influencing disease progression.

View Article and Find Full Text PDF

In the process of ocean exploration, highly accurate and sensitive measurements of seawater temperature and pressure significantly impact the study of seawater's physical, chemical, and biological processes. In this paper, three different package structures, V-shape, square-shape, and semicircle-shape, are designed and fabricated, and an optical microfiber coupler combined Sagnac loop (OMCSL) is encapsulated in these structures with polydimethylsiloxane (PDMS). Then, the temperature and pressure response characteristics of the OMCSL, under different package structures, are analyzed by simulation and experiment.

View Article and Find Full Text PDF

A wide variety of -alkylazaheterocyclic salts are conveniently synthesized from polyol esters and azaheterocyclic salts under solventless conditions. In particular, paraquat-like derivatives showed comparable herbicidal activity toward several common weeds. Mechanistic studies suggest that polyesters likely underwent partial hydrolysis and neighboring group participating dehydration under the action of acidic salt to generate five-membered ring intermediates, which reacted with the azaheterocycle to accomplish the -alkylation.

View Article and Find Full Text PDF

Human endogenous retroviruses (HERVs) have evolved from exogenous retroviruses and account for approximately 8% of the human genome. A growing number of findings suggest that the abnormal expression of HERV genes is associated with schizophrenia, multiple sclerosis, endometriosis, breast cancer, bladder cancer and other diseases. HERV-W env (syncytin-1) is a membrane glycoprotein which plays an important role in placental development.

View Article and Find Full Text PDF

Synopsis of recent research by authors named "Qiang Bian"

  • Qiang Bian's recent research focuses on developing novel antifungal and antibacterial agents, synthesizing compounds derived from thiourea, thiazolyl hydrazine, and quinoline, aimed at combating plant pathogens and optimizing agricultural practices.!
  • The studies highlight the effectiveness of new chemical entities, such as quinoline derivatives exhibiting potent antibacterial activity and aldehyde-thiourea derivatives against Monilinia fructicola, which could serve as safe and effective pesticides.!
  • Additionally, Bian has explored the molecular mechanisms of disease resistance in rice and the therapeutic targeting of specific proteins in human cancers, demonstrating a significant interdisciplinary approach to addressing agricultural and medical challenges.!