Repeated parallel losses of inflexed stamens in Moraceae: Phylogenomics and generic revision of the tribe Moreae and the reinstatement of the tribe Olmedieae (Moraceae)
Repeated parallel losses of inflexed stamens in Moraceae: Phylogenomics and generic revision of the tribe Moreae and the reinstatement of the tribe Olmedieae (Moraceae)
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DOI：
10.1002/tax.12526
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发表时间：
2021-07-06
期刊：
影响因子：
3.4
通讯作者：
Hipp, Andrew L.
中科院分区：
文献类型：
--
作者：
Gardner, Elliot M.;Garner, Mira;Hipp, Andrew L.
我们对桑树部落（Moreae，Moraceae）进行了一项密集采样的系统发育研究，桑树部落是一个具有全球分布的重要经济分支，揭示了内折雄蕊的多次损失，传统上用于限制桑树的特征。内弯雄蕊有利于弹道花粉释放，并与风授粉有关，这里提出的结果表明，这种性状状态的丧失可能在桑科植物中反复进化。 Moreae 及其几个主要属（桑属、Streblus、Trophis）均未被发现是单系的。提出了单系 Moreae 的修订系统，包括恢复 Ampalis 属、Maillardia 属、Taxotropicis 属和 Paratropicis 属，以及对新属 Afromorus 的认可。 Pseudostreblus 被恢复并转移到Parartocarpeae，Sloetiopsis 被恢复并转移到Dorstenieae。由于奥尔梅迪亚类型的恢复及其被排除在莫雷埃之外，奥尔梅迪亚部落得以恢复，取代了卡斯蒂利亚部落。斯特雷布卢斯 s.str.被从 Moreae 中排除并转移到 Olmedieae，其主要特征是总苞花序，而不考虑雄蕊位置。制作了九种新组合。
We present a densely sampled phylogenomic study of the mulberry tribe (Moreae, Moraceae), an economically important clade with a global distribution, revealing multiple losses of inflexed stamens, a character traditionally used to circumscribe Moreae. Inflexed stamens facilitate ballistic pollen release and are associated with wind pollination, and the results presented here suggest that losses of this character state may have evolved repeatedly in Moraceae. Neither Moreae nor several of its major genera (Morus, Streblus, Trophis) were found to be monophyletic. A revised system for a monophyletic Moreae is presented, including the reinstatement of the genera Ampalis, Maillardia, Taxotrophis, and Paratrophis, and the recognition of the new genus Afromorus. Pseudostreblus is reinstated and transferred to the Parartocarpeae, and Sloetiopsis is reinstated and transferred to the Dorstenieae. The tribe Olmedieae is reinstated, replacing the Castilleae, owing to the reinstatement of the type Olmedia and its exclusion from Moreae. Streblus s.str. is excluded from Moreae and transferred to the Olmedieae, which is characterized primarily by involucrate inflorescences without regard to stamen position. Nine new combinations are made.