Integrative transcriptome and proteome analysis identifies major metabolic pathways involved in pepper fruit development
2019
Pepper (Capsicum annuum L.) fruit development is a complex and genetically programmed process. In this study, we conducted integrative analysis of transcriptome and proteome profiles during pepper fruit development. A total of 23,349 transcripts and 5,455 protein groups were identified in four fruit developmental stages of two pepper varieties. The numbers of transcripts and proteins identified were decreased gradually across fruit development and the most significant changes in transcript and protein levels happened from the mature green (MG) to breaker (Br) stages. Poor correlation between differentially expressed transcript and differentially expressed protein profiles was observed during pepper fruit development. We then analyzed expression profiles of transcripts and proteins involved in cell wall metabolism, and capsanthin, tocopherol and ascorbate biosynthetic pathways during fruit development, and identified key regulatory proteins in these pathways. We presented a dynamic picture of pepper fruit ...
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