Chinese Bulletin of Botany ›› 2022, Vol. 57 ›› Issue (6): 764-773.DOI: 10.11983/CBB22157

Special Issue: 饲草生物学专辑 (2023年58卷2期、2022年57卷6期)

• ·REVIEWS· FORAGE BIOLOGY SPECIAL ISSUE • Previous Articles     Next Articles

Research Progress in Efficient Fixation, Transport, Assimilation of Carbon and Nitrogen in Legume Forages

Zhaosheng Kong1,2, Wenqiang Yang2,3,4,*(), Baichen Wang2,3,4, Rongcheng Lin3   

  1. 1State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
    2Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
    3Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
    4College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-07-17 Accepted:2022-10-09 Online:2022-11-01 Published:2022-11-18
  • Contact: Wenqiang Yang

Abstract: In China, the demand for high-quality forage is continuously increasing. Improving the yield and quality of various forages, especially alfalfa (Medicago sativa), has been an important scientific and economic goal for plant breeders. Fixation of carbon dioxide by photosynthesis is the basis for the formation of forage biomass. Nitrogen absorption, fixation, transport and assimilation are important biological processes that affect the crude protein content of forage and determine its quality. Both biological processes are interdependent to each other. Therefore, we propose the new breeding ideas for efficient fixation, transport and assimilation of carbon and nitrogen in alfalfa, and summarize the latest progress in efficient fixation and transport of carbon dioxide, nitrogen fixation and absorption, as well as nitrogen transport and assimilation in recent years, so as to shed some light on molecular design breeding for forage with high biomass and high protein content in the future.

Key words: legume forage, carbon fixation and photosynthesis, nitrogen uptake and assimilation, carbon and nitrogen transportation, nitrogen fixation