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With the enhancement of environmental protection awareness, research on the bioremediation of petroleum hydrocarbon environmental pollution has intensified. Bioremediation has received more attention due to its high efficiency, environmentally friendly by-products, and low cost compared with the commonly used physical and chemical restoration methods. In recent years, bacterium engineered by systems biology strategies have achieved biodegrading of many types of petroleum pollutants. Those successful cases show that systems biology has great potential in strengthening petroleum pollutant degradation bacterium and accelerating bioremediation. Systems biology represented by metabolic engineering, enzyme engineering, omics technology, etc., developed rapidly in the twentieth century. Optimizing the metabolic network of petroleum hydrocarbon degrading bacterium could achieve more concise and precise bioremediation by metabolic engineering strategies; biocatalysts with more stable and excellent catalytic activity could accelerate the process of biodegradation by enzyme engineering; omics technology not only could provide more optional components for constructions of engineered bacterium, but also could obtain the structure and composition of the microbial community in polluted environments. Comprehensive microbial community information lays a certain theoretical foundation for the construction of artificial mixed microbial communities for bioremediation of petroleum pollution. This article reviews the application of systems biology in the enforce of petroleum hydrocarbon degradation bacteria and the construction of a hybrid-microbial degradation system. Then the challenges encountered in the process and the application prospects of bioremediation are discussed. Finally, we provide certain guidance for the bioremediation of petroleum hydrocarbon-polluted environment. [ABSTRACT FROM AUTHOR]

Butterflies and moths have substantially different daily activities; butterflies are diurnal, while moths are largely nocturnal or crepuscular. Diurnal moths are subject to different evolutionary pressures that affect several aspects of their behavior and physiology, particularly sexual communication. In this review, species of diurnal moths and the behaviors and mechanisms of their sexual communication are summarized. Diurnal moths are day–flying insects whose partner–finding strategies include visual, olfactory and auditory signals. Males of diurnal Lepidoptera find mating partners using olfactory cues (e.g., sex pheromones) over relatively long distances, or visual (e.g., compound eyes) and/or auditory cues (e.g., ears) over short distances, or even act in combination with the three types of signals. Pheromone–binding proteins and histamine and visual genes play important roles during the signal conduction of sexual communication in diurnal moths. However, the regulatory mechanisms of acoustic communication in day–flying moths are unclear. Understanding this information may help us to explore the evolution of sexual communication in Lepidoptera and to improve biotechnological control strategies against harmful day–flying moths. [ABSTRACT FROM AUTHOR]