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Achievements and prospects of genetic engineering in poplar: a review

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Abstract

Poplars play important role in global forestry. Besides being cultivated as an agro-forestry crop, they provide mankind with fuel wood, timber wood, plywood, sports goods, raw material for paper industry and recently, they are being used as a potential biofuel source. However, a number of biotic and abiotic stresses reduce poplar yield and productivity. Further, there is a strong felt need of paper and pulp industries to have reduced lignin content or modified lignin composition of poplar wood, which will assist in manufacturing better quality paper using less environmentally hazardous chemicals. Because of the non-availability of resistance donor sources and long generation period, conventional breeding could achieve success in genetic improvement of poplars. To circumvent these bottlenecks, genetic engineering interventions have been applied for poplar crop improvement. With the availability of Populus trichocarpa genome sequence in public domain, now numerous genes and transcription factors governing various metabolic pathways got identified, which can be targeted for genetic engineering for poplar improvement. Genome editing technology has really expedited the pace of poplar improvement programmes. This review provides an insight into various research efforts focused on poplar genetic engineering for improvement of silviculturally important traits.

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  1. Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh, 173 230, India

    Ajay K. Thakur, Pankaj Kumar, Nehanjali Parmar, Rajesh K. Shandil, Gaurav Aggarwal, Ayesh Gaur & Dinesh K. Srivastava

  2. ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India

    Ajay K. Thakur & Nehanjali Parmar

  3. CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176 061, India

    Pankaj Kumar

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AKT and DKS conceived the idea, developed the framework and edited the manuscript; NP, RKS, GA and AG collected and compiled the literature; PK did the editing part and developed figures.

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Thakur, A.K., Kumar, P., Parmar, N. et al. Achievements and prospects of genetic engineering in poplar: a review. New Forests 52, 889–920 (2021). https://doi.org/10.1007/s11056-021-09836-3

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