Potter Daniel, Uleh Mark
Department of Plant Sciences, College of Agricultural and Environmental Sciences, University of California, Davis, CA 95616, USA.
Plants (Basel). 2024 Dec 26;14(1):41. doi: 10.3390/plants14010041.
and are two closely related genera of the sub-family Chrysophylloideae in the family Sapotaceae. It has been reported that the two genera are a monophyletic group, and their generic limitations are uncertain. is an economically important genus that includes the medicinally and culinarily important plant, -miracle berry, . The phylogenetic relationships among the species are poorly understood. This study has been conducted to refine the phylogenetic relationships between and within the two genera utilizing nuclear and chloroplast DNA data. Bayesian analyses and Maximum likelihood of nuclear internal transcribed spacer () and plastid () sequences were used to reconstruct the phylogeny of the two genera. Phylogenetic trees generated for both regions (nuclear and plastid) resulted in the resolution of six clades. Four of the clades correspond to species in the genus and two clades include species of . The two clades of are nested within suggesting that the two genera are closely related and may not merit their current circumscription as distinct genera. Also, is confirmed to constitute more than one lineage suggesting it is not monophyletic in its current definition. Overall, the study suggests the need for a comprehensive evaluation of all species currently recognized in the two genera.
[具体属名1] 和 [具体属名2] 是山榄科金叶树亚科中两个密切相关的属。据报道，这两个属是一个单系类群，其属的界定尚不确定。[具体属名1] 是一个具有经济重要性的属，包括具有药用和烹饪价值的重要植物——神秘果（[具体种名]）。该属内物种间的系统发育关系了解甚少。本研究利用核DNA和叶绿体DNA数据，对这两个属之间以及属内的系统发育关系进行了细化。采用贝叶斯分析和核内转录间隔区（[具体缩写1]）及质体（[具体缩写2]）序列的最大似然法来重建这两个属的系统发育树。针对两个区域（核和质体）生成的系统发育树共解析出六个分支。其中四个分支对应于**[具体属名1]** 的物种，两个分支包含**[具体属名2]** 的物种。[具体属名2] 的两个分支嵌套在**[具体属名1]** 之中，这表明这两个属关系密切，可能不应保持目前作为不同属的界定。此外，已证实**[具体属名1]** 由不止一个谱系构成，这表明其目前的定义并非单系的。总体而言，该研究表明需要对这两个属目前所认可的所有物种进行全面评估。
