Bao Jingyin, O'Donohue Billy, Sommerville Karen D, Mitter Neena, O'Brien Chris, Hayward Alice
Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD 4072, Australia.
Australian Institute of Botanical Science, The Royal Botanic Gardens and Domain Trust, Mount Annan, NSW 2567, Australia.
Plants (Basel). 2024 Aug 13;13(16):2244. doi: 10.3390/plants13162244.
Myrteae is the most species-rich tribe in the Myrtaceae family, represented by a range of socioeconomically and ecologically significant species. Many of these species, including commercially relevant ones, have become increasingly threatened in the wild, and now require conservation actions. Tissue culture presents an appropriate in vitro tool to facilitate medium-term and long-term wild germplasm conservation, as well as for commercial propagation to maintain desirable traits of commercial cultivars. So far, tissue culture has not been extensively achieved for Myrteae. Here, tissue culture for , one of the most species-rich genera in Myrteae, is reviewed, giving directions for other related Myrteae. This review also focuses on ex situ conservation of Australian Myrteae, including using seed banking and field banking. Despite some progress, challenges to conserve these species remain, mostly due to the increasing threats in the wild and limited research. Research into in vitro methods (tissue culture and cryopreservation) is paramount given that at least some of the species are 'non-orthodox'. There is an urgent need to develop long-term in vitro conservation for capturing the remaining germplasm of threatened Myrteae.
桃金娘族是桃金娘科中物种最丰富的族，由一系列具有社会经济和生态意义的物种代表。这些物种中的许多，包括具有商业价值的物种，在野外受到的威胁日益增加，现在需要采取保护行动。组织培养提供了一种合适的体外工具，便于中期和长期野生种质资源的保存，以及用于商业繁殖以保持商业栽培品种的理想性状。到目前为止，桃金娘族的组织培养尚未广泛实现。在此，对桃金娘族中物种最丰富的属之一的组织培养进行综述，为其他相关桃金娘族提供指导。本综述还侧重于澳大利亚桃金娘族的迁地保护，包括使用种子库和田间种质库。尽管取得了一些进展，但保护这些物种仍面临挑战，主要是由于野外威胁的增加和研究有限。鉴于至少一些物种是“非正统”的，对体外方法（组织培养和冷冻保存）的研究至关重要。迫切需要开发长期体外保存方法，以获取受威胁桃金娘族的剩余种质资源。
