Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 170, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2021.113667
Keywords
Cis-polyisoprene; Genetic engineering; Hevea brasiliensis; In vitro culture; Laticifer; Molecular weight; Natural rubber biosynthesis
Categories
Funding
- Iran National Science Foundation (INSF) [98011461]
- United States Department of Agriculture, National Institute of Food and Agriculture [230837]
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Natural rubber has unique properties that cannot be matched by synthetic rubber, with production mainly dependent on the rubber tree. However, challenges such as specialized growth conditions and susceptibility to fungal pathogens require the development of alternative rubber-producing sources to increase production diversity.
Natural rubber (NR, cis-1,4-polyisoprene) is applied in over 50,000 products. It has unique properties, which cannot be matched by synthetic rubber. The par ' a rubber tree (Hevea brasiliensis Muell. Arg.) belonging to the Euphorbiaceae family is currently the only commercial source of NR. Alternative rubber-producing sources and systems are required to increase the biological and geographic diversity of natural rubber production, especially because of H. brasiliensis need for specialized growth conditions and its susceptibility to fungal pathogens. After describing rubber-producing plants, laticifer cells, rubber particles, and NR biosynthesis, this review focuses on the current challenges and potential ways to improve rubber production from Taraxacum kok-saghyz, a strong candidate alternative NR crop in temperate regions. In vitro culture, genetic engineering, and focused gene editing are discussed, in the context of rubber biosynthesis, but complementary breeding research (including interspecific hybridization and polyploidy induction), will be needed to fully develop this new rubber crop.
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