Functional analysis of Sf-NPF1 in food intake and antifeedant induction by azadirachtin in Spodoptera frugiperda larvae.

Azadirachtin, a highly effective botanical pesticide, demonstrated notable biological activities against Spodoptera frugiperda, including mortality induction, growth and development inhibition, and antifeedant effects. Neuropeptide F (NPF) has been shown to play a role in various physiological processes in insects. Nonetheless, the functions of Sf-NPF1 in regulating food intake and antifeedant induction by azadirachtin in S.

Genome-wide identification, expression profiling, and functional analysis of sugar transporter family genes in Diaphorina citri.

Sugar transporters (STs) are important proteins responsible for the movement of sugar through the cell membrane and play pivotal roles in the growth, development, and osmoregulation of phloem-feeding hemipterans. However, information about STs in the Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Liviidae), remains unknown. In this study, a total of 61 STs were identified according to the genome and transcriptome analysis of D.

Combined transcriptome and metabolome analyses provide insights into host adaptation mechanism of Spodoptera frugiperda to cruciferous vegetables.

The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), is a worldwide migratory pest that inflicts considerable harm on numerous economically vital crops.

Low-loss thin-film periodically poled lithium niobate waveguides fabricated by femtosecond laser photolithography.

Periodically poled lithium niobate on insulator (PPLNOI) ridge waveguides are essential photonic components for both classical and quantum information processing. However, dry etching of PPLNOI waveguides frequently generates rough sidewalls and variations in the etching rates of oppositely poled lithium niobate ferroelectric domains, leading to relatively high propagation losses (0.25-1 dB/cm), which significantly limits net conversion efficiency and hinders scalable photonic integration.

Efficient Transverse Multiwave Interactions up to Six-Wave Mixing in a High-Q Lithium Niobate Microresonator.

High-order nonlinear optical processes beyond four-wave mixing (χ^{(3)}) are crucial for advancing ultraviolet (UV) light sources and quantum technologies, yet their practical implementation remains challenging due to inherently weak high-order nonlinear susceptibilities and stringent broadband phase-matching requirements-limitations that persist even in state-of-the-art high-Q microresonators. A breakthrough transverse multiwave mixing scheme is proposed in a high-Q lithium niobate microresonator, only under a single continuous-wave (cw) laser pump. Our approach leverages self-organized subwavelength photorefractive gratings (SPGs) generated through a bidirectional stimulated Raman scattering (SRS) process in the microresonator, without using two external counterpropagating lasers.

Integrated high-Q cascaded Fabry-Perot resonators based on lithium niobate Sagnac loop reflectors.

We demonstrated an integrated high-Q cascaded Fabry-Perot (FP) resonator on lithium niobate on insulator (LNOI) implemented by multi-Sagnac loop reflectors, which was fabricated by femtosecond laser photolithography-assisted chemo-mechanical polishing (CMP). Compared with the resonator that comprised only two Sagnac loop reflectors (SLRs), there is a significant Q factor enhancement in the cascaded resonator formed by multi-SLRs. The loaded Q factor of the cascaded resonator was measured to be 1.

Dual-Color Coherent Perfect Absorber.

Perfect absorption of light critically affects light-matter interaction for various applications. Coherent perfect absorbers (CPAs) gain the unique capability of controlling light with light in a linear fashion. Multicolor CPAs [S.

Fabrication of ultra-high-Q TaO microdisks by photolithography-assisted chemo-mechanical etching.

Tantalum pentoxide (TaO) is widely recognized as a promising material platform for photonic integration. This is primarily attributed to its exceptional properties including large bandgap of 3.8 eV, broad transparency window ranging from 300 nm to 8000 nm, high nonlinear refractive index of ∼7.

Exposure to Sublethal Concentrations of Dinotefuran Induces Apoptosis in the Gut of Adults via Activating the Mitochondrial Apoptotic Pathway.

is a serious citrus pest. Dinotefuran is highly insecticidal against . To analyze the sublethal effects of dinotefuran on adults, an indoor toxicity test was performed, which revealed that the lethal concentration 50 (LC) values were 4.

Low-Threshold Anti-Stokes Raman Microlaser on Thin-Film Lithium Niobate Chip.

Raman microlasers form on-chip versatile light sources by optical pumping, enabling numerical applications ranging from telecommunications to biological detection. Stimulated Raman scattering (SRS) lasing has been demonstrated in optical microresonators, leveraging high Q factors and small mode volume to generate downconverted photons based on the interaction of light with the Stokes vibrational mode. Unlike redshifted SRS, stimulated anti-Stokes Raman scattering (SARS) further involves the interplay between the pump photon and the SRS photon to generate an upconverted photon, depending on a highly efficient SRS signal as an essential prerequisite.

High-efficiency second harmonic generation in a micro-resonator on dual-layered lithium niobate.

High-quality micro-resonators on thin-film lithium niobate (TFLN) have emerged as an ideal platform for on-chip nonlinear optical applications due to their strong light confinement and excellent natural nonlinear optical properties. Here, we present high-efficiency second-harmonic generation (SHG) in micro-resonators on a TFLN based on the modal phase matching and natural quasi-phase matching. By optimizing the phase-matching conditions through thermal tuning, we demonstrate an on-chip SHG efficiency of 149,000%/W in the low power regime.

Measuring and analyzing the information entropy value of key Audit matters (KAMs) disclosure at the system and reporting scale.

Drawing upon information entropy theory, this study deduces a measurement formula for the information entropy for key audit matters (KAMs) disclosure, considering both system scale and audit report scale. The information entropy of an audit report within a specific system is calculated as the weighted average logarithm value of the continuous product of KAM disclosure frequencies. Subsequently, a systematic calculation of KAM disclosure information entropy is conducted using 14,837 financial statement audit reports from listed companies traded on the Shanghai and Shenzhen Stock Exchanges, covering the FY 2017-20 period.

Host plant-induced changes in metabolism and osmotic regulation gene expression in Diaphorina citri adults.

The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Liviidae), is a worldwide citrus pest. It transmits the pathogen Candidatus Liberibacter spp. of Huanglongbing (HLB), causing severe economic losses to the citrus industry.

Characterization and transcriptomic analyses of the toxicity induced by toosendanin in Spodoptera frugipreda.

The fall armyworm, Spodoptera frugiperda, is a destructive agricultural pest that seriously threatens global food security. Insecticide resistance of this pest has gradually formed in recent years due to improper usage, and alternative methods are badly needed. Toosendanin (TSN) is a botanical compound with broad-spectrum insecticidal activities against many pests.

Ultra-high Q lithium niobate microring monolithically fabricated by photolithography assisted chemo-mechanical etching.

As one of the element photonic structures, the state-of-the-art thin-film lithium niobate (TFLN) microrings reach an intrinsic quality (Q) factor higher than 10. However, it is difficult to maintain such high-Q factors when monolithically integrated with bus waveguides. Here, a relatively narrow gap of an ultra-high Q monolithically integrated microring is achieved with 3.

Characterization of the physiological, histopathological, and gene expression alterations in Spodoptera frugiperda larval midguts affected by toosendanin exposure.

The fall armyworm, Spodoptera frugiperda, is a polyphagous pest worldwide and feeds on many grain and cash crops, which threatens the safety of agriculture and forestry production. Toosendanin (TSN) is a commercial insecticidal active ingredient used to manage various pests in the field and showed adverse effects against S. frugiperda, while the effects of TSN on the larval midguts are not yet known.

The effects of carvacrol on development and gene expression profiles in Spodoptera frugiperda.

The fall armyworm, Spodoptera frugiperda, is a highly polyphagous agricultural pest that is widely distributed around the world and causes severe crop yield loss. Carvacrol showed adverse effects on many pests, such as larval death and growth inhibition. While the effects of carvacrol on S.

Erbium-ytterbium codoped thin-film lithium niobate integrated waveguide amplifier with a 27 dB internal net gain.

A photonic integrated waveguide amplifier fabricated on erbium-ytterbium (Er-Yb) codoped thin-film lithium niobate (TFLN) has been investigated in this work. A small-signal internal net gain of 27 dB is achieved at a signal wavelength of 1532 nm in the fabricated Er-Yb TFLN waveguide amplifier pumped by a diode laser at ≈980 nm. Experimental characterizations reveal the suitability of waveguide fabrication by the photolithography-assisted chemo-mechanical etching (PLACE) technique and also the gain in an Yb-sensitized-Er material.

The comparison of gut gene expression and bacterial community in Diaphorina citri (Hemiptera: Liviidae) adults fed on Murraya exotica and 'Shatangju' mandarin (Citrus reticulate cv. Shatangju).

Background: Diaphorina citri Kuwayama is an important citrus pest. It serves as the vector for the transmission of Candidatus Liberibacter asiaticus (CLas), which induced a destructive disease, Huanglongbing, and caused huge economic losses. During the interaction between insects and plants, insects have evolved a series of mechanisms to adapt to various host plants.

Does the disclosure of key audit matters improve the audit quality for sustainable development: Empirical evidence from China.

In this paper, taking the 14837 annual audit reports of 4159 listed companies in Shanghai and Shenzhen Stock Exchanges from 2017 to 2020 as samples, and taking the information entropy value of KAM disclosures and the type of audit opinion as the agent indexes of the explanatory variable and the interpreted variable respectively, whether the disclosure of KAMs could improve audit quality had been empirically tested and analyzed. The results shown that: (1) The regression coefficient of information entropy value of KAMs disclosure was 0.1785, which shown a significant positive correlation, and was established at the level of 1% significance, that was to say, KAMs disclosure can improve audit quality.

Controllable EIT-like mode splitting in a chiral microcavity.

Two coupled resonance modes can lead to exotic transmission spectra due to internal interference processes. Examples include electromagnetically induced transparency (EIT) in atoms and mode splitting in optics. The ability to control individual modes plays a crucial role in controlling such transmission spectra for practical applications.

Integrated miRNA and transcriptome profiling to explore the molecular mechanism of Spodoptera frugiperda larval midgut in response to azadirachtin exposure.

As a destructive agricultural pest, Spodoptera frugiperda has spread worldwide in the past few years. Azadirachtin, an environmentally friendly and most promising compound, showed adverse effects, including mortality and growth inhibition, against S. frugiperda.

The bacterial and fungal communities of the larval midgut of Spodoptera frugiperda (Lepidoptera: Noctuidae) varied by feeding on two cruciferous vegetables.

Spodoptera frugiperda is a highly polyphagous pest worldwide with a wide host range that causes serious losses to many economically important crops. Recently, insect-microbe associations have become a hot spot in current entomology research, and the midgut microbiome of S. frugiperda has been investigated, while the effects of cruciferous vegetables remain unknown.