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Plant genetic transformation is a pivotal and essential step in modifying important agronomic traits using biotechnological tools, which primarily depend on the efficacy of transgene delivery and the plant regeneration system. Over the years, advancements in the development of delivery methods and regeneration systems have contributed to plant engineering and molecular breeding. Recent studies have demonstrated that the efficiency of plant transformation can be improved by simultaneously delivering meristem-developmental regulators, utilizing virus-mediated gene editing, and executing non-sterile in planta manipulations. Efficient genetic delivery and non-tissue culture regeneration systems are gradually being developed. This review summarizes diverse delivery strategies and in planta regeneration techniques aimed at improving the efficiency of plant genetic transformation. We also emphasize the integration and utilization of these emerging transgenic approaches for expediting future crop engineering.
Wu et al. (Thu,) studied this question.