Year
Month
(Peer-Reviewed) Involvement of glucose transporter 4 in ovarian development and reproductive maturation of Harmonia axyridis (Coleoptera: Coccinellidae)
Yan Li ¹ ², Sha-Sha Wang 王沙沙 ², Su Wang 王甦 ³, Shi-Gui Wang 王世贵 ², Bin Tang 唐斌 ², Fang Liu 刘芳 ¹
¹ College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, 225009, China
中国 扬州 扬州大学园艺与植物保护学院
² College of Life and EnvironmentalSciences, Hangzhou Normal University, Hangzhou, Zhejiang, 310036, China
中国 浙江 杭州 杭州师范大学生命与环境科学学院
³ Institute of Plant and Environment Protection, Beijing Academy of Agricultural and Forestry Sciences, Beijing, 100097, China
中国 北京 北京市农林科学院 植物保护环境保护研究所
Insect Science, 2021-09-13
Abstract

Glucose is vital to embryogenesis, as are glucose transporters. Glucose transporter 4 (Glut4) is one of the glucose transporters, which is involved in rapid uptake of glucose by various cells and promotes glucose homeostasis. Although energy metabolism in insect reproduction is well known, the molecular mechanism of Glut4 in insect reproduction is poorly understood. We suspect that Glut4 is involved in maintaining glucose concentrations in the ovaries and affecting vitellogenesis, which is critical for subsequent oocyte maturation and insect fertility.

Harmonia axyridis (Pallas) is a model organism for genetic research and a natural enemy of insect pests. We studied the influence of the Glut4 gene on the reproduction and development of H. axyridis using RNA interference technology. Reverse transcription quantitative polymerase chain reaction analysis revealed that HaGlut4 was most highly expressed in adults. Knockdown of the HaGlut4 gene reduced the transcript levels of HaGlut4, and the weight and number of eggs produced significantly decreased.

In addition, the transcript levels of vitellogenin receptor and vitellogenin in the fat bodies and the ovaries of H. axyridis decreased after the interference of Glut4, and decreased the triglyceride, fatty acid, total amino acid and adenosine triphosphate content of H. axyridis. This resulted in severe blockage of ovary development and reduction of yolk formation; there was no development of ovarioles in the developing oocytes. These changes indicate that a lack of HaGlut4 can impair ovarian development and oocyte maturation and result in decreased fecundity.
Involvement of glucose transporter 4 in ovarian development and reproductive maturation of Harmonia axyridis (Coleoptera: Coccinellidae)_1
Involvement of glucose transporter 4 in ovarian development and reproductive maturation of Harmonia axyridis (Coleoptera: Coccinellidae)_2
Involvement of glucose transporter 4 in ovarian development and reproductive maturation of Harmonia axyridis (Coleoptera: Coccinellidae)_3
Involvement of glucose transporter 4 in ovarian development and reproductive maturation of Harmonia axyridis (Coleoptera: Coccinellidae)_4
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