Genomic analyses of the CAM plant pineapple

Jisen Zhang, Juan Liu, Ray Ming

Research output: Contribution to journalReview article

Abstract

The innovation of crassulacean acid metabolism (CAM) photosynthesis in arid and/or low CO2 conditions is a remarkable case of adaptation in flowering plants. As the most important crop that utilizes CAM photosynthesis, the genetic and genomic resources of pineapple have been developed over many years. Genetic diversity studies using various types of DNA markers led to the reclassification of the two genera Ananas and Pseudananas and nine species into one genus Ananas and two species, A. comosus and A. macrodontes with five botanical varieties in A. comosus. Five genetic maps have been constructed using F1 or F2 populations, and high-density genetic maps generated by genotype sequencing are essential resources for sequencing and assembling the pineapple genome and for markerassisted selection. There are abundant expression sequence tag resources but limited genomic sequences in pineapple. Genes involved in the CAM pathway has been analysed in several CAM plants but only a few of them are from pineapple. A reference genome of pineapple is being generated and will accelerate genetic and genomic research in this major CAM crop. This reference genome of pineapple provides the foundation for studying the origin and regulatory mechanism of CAM photosynthesis, and the opportunity to evaluate the classification of Ananas species and botanical cultivars.

Original languageEnglish (US)
Pages (from-to)3395-3404
Number of pages10
JournalJournal of experimental botany
Volume65
Issue number13
DOIs
StatePublished - Jul 2014

Keywords

  • Crassulacean acid metabolism (CAM) photosynthesis
  • Epigenetics
  • Genetic diversity
  • Linkage mapping
  • Reference genome

ASJC Scopus subject areas

  • Physiology
  • Plant Science

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