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Review ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Plant Sci. | doi: 10.3389/fpls.2019.01258

Floral induction and flower development of orchids

  • 1Academia Sinica Biotechnology Center in Southern Taiwan, Taiwan
  • 2National Pingtung University, Taiwan
  • 3National Institute of Horticultural and Herbal Science, Rural Development Administration, South Korea
  • 4Independent researcher, South Korea

Orchids comprise one of the largest, most highly evolved angiosperm families, and form an extremely peculiar group of plants. Various orchids are available through traditional breeding and micro-propagation since they are valuable as potted plants and/or cut flowers in horticultural markets. The flowering of orchids is generally influenced by environmental signals such as temperature and endogenous developmental programs controlled by genetic factors as is usual in many flowering plant species. The process of floral transition is connected to the flower developmental programs that include floral meristem maintenance and floral organ specification. Thanks to advances in molecular and genetic technologies, the understanding of the molecular mechanisms underlying orchid floral transition and flower developmental processes have been widened, especially in several commercially important orchids such as Phalaenopsis, Dendrobium and Oncidium. In this review, we consolidate recent progress in research on the floral transition and flower development of orchids emphasizing representative genes and genetic networks, and also introduce a few successful cases of manipulation of orchid flowering/flower development through the application of molecular breeding or biotechnology tools.

Keywords: floral transition, flower development, molecular genetics, orchids, Orchid biotechnology, Transgenic orchids

Received: 09 May 2019; Accepted: 10 Sep 2019.

Copyright: © 2019 Wang, Viswanath, Tong, An, Jang and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Dr. Seonghoe Jang, Independent researcher, Jeollabuk-do, Jeollabuk-do, South Korea, seonghoe.jang@worldveg.org
Prof. Fure-Chyi Chen, National Pingtung University, Pingtung, 900, Taiwan, fchen@mail.npust.edu.tw