Green light and light stress in moth: influence on antioxidant enzymes in the oriental armyworm, Mythimna separata (Lepidoptera: Noctuidae)

2018 ◽  
Vol 25 (35) ◽  
pp. 35176-35183 ◽  
Author(s):  
Kil-Nam Kim ◽  
Chol-Nam Yun ◽  
Un-Chol Sin ◽  
Zhi-Juan Huang ◽  
Qiu-Ying Huang ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Light Stress ◽  
Green Light ◽  
Mythimna Separata ◽  
Oriental Armyworm ◽  
Lepidoptera Noctuidae

Influence of green light at night on Juvenile hormone in the oriental armyworm Mythimna separata (Lepidoptera: Noctuidae)

2019 ◽  
Vol 44 (3-4) ◽  
pp. 245-251
Author(s):  
Kil‐Nam Kim ◽  
Un‐Chol Sin ◽  
Yun‐Chol Jo ◽  
Zhi‐Juan Huang ◽  
Ali Hassan ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Green Light ◽  
Light At Night ◽  
Mythimna Separata ◽  
Oriental Armyworm ◽  
Lepidoptera Noctuidae

Transcriptional identification of differentially expressed genes during the prepupal–pupal transition in the oriental armyworm, Mythimna separata (Walker) (Lepidoptera: Noctuidae)

2021 ◽  
pp. 1-14
Author(s):  
Peirong Li ◽  
Xinru Li ◽  
Wei Wang ◽  
Xiaoling Tan ◽  
Xiaoqi Wang ◽  
...  
Keyword(s):  
Differentially Expressed Genes ◽  
Metabolic Pathways ◽  
Developmental Stages ◽  
Kegg Pathway ◽  
Enrichment Analysis ◽  
Differentially Expressed ◽  
Mythimna Separata ◽  
Kegg Pathway Analysis ◽  
Oriental Armyworm ◽  
Lepidoptera Noctuidae

Abstract The oriental armyworm, Mythimna separata (Walker) is a serious pest of agriculture that does particular damage to Gramineae crops in Asia, Europe, and Oceania. Metamorphosis is a key developmental stage in insects, although the genes underlying the metamorphic transition in M. separata remain largely unknown. Here, we sequenced the transcriptomes of five stages; mature larvae (ML), wandering (W), and pupation (1, 5, and 10 days after pupation, designated P1, P5, and P10) to identify transition-associated genes. Four libraries were generated, with 22,884, 23,534, 26,643, and 33,238 differentially expressed genes (DEGs) for the ML-vs-W, W-vs-P1, P1-vs-P5, and P5-vs-P10, respectively. Gene ontology enrichment analysis of DEGs showed that genes regulating the biosynthesis of the membrane and integral components of the membrane, which includes the cuticular protein (CP), 20-hydroxyecdysone (20E), and juvenile hormone (JH) biosynthesis, were enriched. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated that DEGs were enriched in the metabolic pathways. Of these DEGs, thirty CP, seventeen 20E, and seven JH genes were differentially expressed across the developmental stages. For transcriptome validation, ten CP, 20E, and JH-related genes were selected and verified by real-time PCR quantitative. Collectively, our results provided a basis for further studies of the molecular mechanism of metamorphosis in M. separata.

Influence of green light illumination at night on biological characteristics of the oriental armyworm, Mythimna separata (Lepidoptera: Noctuidae)

2019 ◽  
Vol 110 (1) ◽  
pp. 136-143 ◽  
Author(s):  
K.-N. Kim ◽  
Y.-C. Jo ◽  
Z.-J. Huang ◽  
Hye-Seng Song ◽  
K.-H. Ryu ◽  
...  
Keyword(s):  
Developmental Stages ◽  
Dark Period ◽  
Control Level ◽  
Green Light ◽  
Biological Characteristics ◽  
Light Illumination ◽  
Light Sources ◽  
Mythimna Separata ◽  
Phototactic Behavior ◽  
Oriental Armyworm

AbstractThe oriental armyworm, Mythimna separata is an important crop pest in eastern Asia. Nocturnal insects, including nocturnal moths, have phototactic behavior to an artificial light source. Phototactic behavior in insects is species-specific in response to different wavelengths of light sources. Our previous study showed that green (520 nm) light emitting diode (LED) light resulted in a significantly higher phototactic behavior in M. separata moths compared to the other wavelength LED lights. The goal of the present study is to investigate the influence of green light illumination on biological characteristics of different developmental stages in M. separata. Our results revealed that when different developmental stages of M. separata were exposed to the green light illumination in a dark period, several biological characteristics in all developmental stages except for egg stage were positively changed, but those of F1 generation M. separata which are next generation of the adults exposed to the green light did not significantly change compared with the control level. These findings suggest that green light illumination at night (or dark period) has a positive effect on the development and longevity of M. separata.

scholarly journals Characterization of the complete mitochondrial genome of the Oriental armyworm, Mythimna separata (Lepidoptera: Noctuidae)

2015 ◽  
Vol 112 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Qiu-Ning LIU ◽  
Dan-Dan Bian ◽  
Sen-Hao JIANG ◽  
Bao-Ming GE ◽  
Chun-Lin ZHOU ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
Complete Mitochondrial Genome ◽  
Mythimna Separata ◽  
Oriental Armyworm ◽  
Lepidoptera Noctuidae

Response of antioxidant enzymes in Mythimna separata (Lepidoptera: Noctuidae) exposed to thermal stress

2016 ◽  
Vol 107 (3) ◽  
pp. 382-390 ◽  
Author(s):  
A. Ali ◽  
M. A. Rashid ◽  
Q. Y. Huang ◽  
C. Wong ◽  
C.-L. Lei
Keyword(s):  
Antioxidant Enzymes ◽  
Thermal Stress ◽  
Oxidative Damage ◽  
High Temperatures ◽  
Stress Responses ◽  
Physiological Stress ◽  
Southern China ◽  
Northern China ◽  
Mythimna Separata ◽  
Lepidoptera Noctuidae

AbstractThe oriental army worm Mythimna separata (Lepidoptera: Noctuidae) is a migratory pest in Eastern Asia and China. Seasonal high temperatures in Southern China and low temperatures in Northern China are pressures favouring the annual migration of this species, while cold tolerance determines the northern limit of its overwintering range. A number of physiological stress responses occur in insects as a result of variations in temperature. One reaction to thermal stress is the generation of reactive oxygen species (ROS), which can be harmful by causing oxidative damage. The time-related effects (durations of 1, 4 and 7 h) of thermal stress treatments of M. separata at comparatively low (5, 10, 15 and 20°C) and high (30, 35, 40 and 45°C) temperatures on the activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), peroxidase (POX) and glutathione S-transferases (GSTs), and total antioxidant capacity (T-AOC) were determined. Thermal stress resulted in significant elevation of the activities of SOD, CAT and GSTs, indicating that these enzymes contribute to defence mechanisms counteracting oxidative damage caused by an increase in ROS. However, at high-temperatures, POX and T-AOC were also found to contribute to scavenging ROS. Our results also indicate that extreme temperatures lead to elevated ROS production in M. separata. The present study confirms that thermal stress can be responsible for oxidative damage. To overcome such stress, antioxidant enzymes play key roles in diminishing oxidative damage in M. separata.

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