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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (12): 2597-2610.doi: 10.16420/j.issn.0513-353x.2021-0835

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Recent Advances in Molecular Biology of Crassulacean Acid Metabolism Plants and the Application Potential of CAM Engineering

LI Junzhang1, QIN Yuan2,3,4, XIAO Qiang1, AN Chang2,4, LIAO Jingyi3, ZHENG Ping2,*()   

  1. 1College of Agriculture,Fujian Agriculture and Forestry University,Fuzhou 350000,China
    2Haixia Institute of Science and Technology,Fujian Agriculture and Forestry University,Fuzhou 350000,China
    3College of Life Science,Fujian Agriculture and Forestry University,Fuzhou 350000,China
    4College of Agriculture,Guangxi University,Nanning 530000,China
  • Received:2022-04-22 Revised:2022-08-31 Online:2022-12-25 Published:2023-01-02
  • Contact: ZHENG Ping E-mail:zhengping@fafu.edu.cn

Abstract:

Crassulacean acid metabolism photosynthetic pathway is a kind of carbon concentrating mechanism that evolved from C3 photosynthesis and it is characterized by nocturnal CO2 fixation and high water use efficiency. Currently,there are growing interests in improving WUE to enhance drought resistance by“transferring”CAM pathway into C3 crops,also called‘CAM engineering’. CAM engineering has significant application potential in agriculture,while systematical investigations of CAM photosynthetic pathway / plants are a prerequisite to its progression. The wide applications of multi-omics and molecular biology methods have extensively promoted CAM plants related studies. CAM pathway-related key genes and their functions are being gradually revealed,and many CAM plant genomes have been published. Diverse mechanisms are involved in the regulation of the CAM pathway, including transcription factors,hormones,miRNA,lncRNA,alternative splicing,and DNA methylation This article mainly focuses on the latest progress of molecular biology and omics studies on CAM plants. In addtion,future research prospective and study interests are also discussed to guide further investigations on CAM plants.

Key words: crassulacean acid, metabolism, multi-omics, molecular mechanism, transcriptional regulation, water use efficiency

CLC Number: