Analysis of pupal head proteome and its alteration in diapausing pupae of Helicoverpa armigera.
The proteomic approach has proven to be an useful tool for understanding insect diapause processes. Using 2D gel electrophoresis and matrix assisted laser/desorption ionization (MALDI) time of flight (TOF), we identified 24 proteins in the head of Helicoverpa armigera pupae with diverse functional characteristics, including cytoskeleton proteins, heat-shock proteins, insect development regulation factors, ATPases, proteins regulating signal pathway and enzymes involved in metabolism, etc. A proteomic comparison between nondiapausing and diapausing pupae revealed three proteins that were present only in nondiapausing pupae, and six proteins represented >or=2.0-fold or <or=0.5-fold changes. The differentially expressed proteins, including heat-shock protein 90, chitin deacetylase, alpha-tubulin and transitional endoplasmic reticulum ATPase, etc. were reported for the first time in H. armigera. Identification of these proteins will enable us to further characterize the regulated functions of diapause in this important species.
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
Lizhen
L
Chen
Weihua
W
Ma
Xiaoping
X
Wang
Changying
C
Niu
Chaoliang
C
Lei
D000818:Animals; D015180:Electrophoresis, Gel, Two-Dimensional; D005260:Female; D006257:Head / Q000254:growth & development; D019476:Insect Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D008297:Male; D008969:Molecular Sequence Data; D009036:Moths / Q000737:chemistry* / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D020543:Proteome / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D011679:Pupa / Q000737:chemistry / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D015398:Signal Transduction
D019476:Insect Proteins; D020543:Proteome