Abstract：
Over the last 2 decades, routine collections in the Hawaiian Archipelago have expanded to mesophotic reefs, leading to the discovery of a new red algal genus and species, here described as Anunuuluaehu liula gen. et sp. nov. This study provides a detailed genus and species description and characterizes chloroplast and mitochondrial organellar genomes. The new genus, Anunuuluaehu, shares many characteristics with the family Phyllophoraceae and shows close similarities to Archestennogramma and Stenogramma, including habit morphology, nemathecia forming proliferations at the outer cortex with terminal chains of tetrasporangia, and carposporophytes with multi-layered pericarps. The single species in this genus exhibits distinctive features within the Phyllophoraceae: the presence of single-layer construction of large medullary cells and the development of long, tubular gonimoblastic filaments. Multi-gene phylogenetic analyses confirmed it as a unique, monophyletic lineage within the family. Cis-splicing genes, interrupted by intron-encoded proteins within group II introns, are present in both the chloroplast and mitochondrial genomes of A. liula. Notably, a specific region of the coxI group II intron exhibits similarity to fungal introns. Anunuuluaehu liula is presumed to be endemic to the Hawaiian Archipelago and thus far is known to live solely at mesophotic depths from Hōlanikū to Kaho\'olawe ranging from 54 to 201 m, which is the deepest collection record of any representative in the family. Overall, this study enhances our understanding of the genomic and taxonomic complexities of red algae in mesophotic habitats, emphasizing the significance of continued research in this area to uncover further insights into evolutionary processes and biogeographic patterns.
摘要：
在过去的20年里，夏威夷群岛的常规收藏已扩展到中观珊瑚礁，导致发现了一个新的红藻属和物种，这里描述为Anunuuluaehuliulagen。等sp.11月。这项研究提供了详细的属和物种描述，并表征了叶绿体和线粒体细胞器基因组。新属，Anunuuluaehu,与毛竹科具有许多特征，并与牙列牙谱和眼谱相似，包括习惯形态，线虫在外皮层形成增殖，并带有四孢子囊的末端链，和具有多层果皮的食心菌。该属中的单个物种在毛竹科中表现出独特的特征：存在大型髓质细胞的单层结构和长，管状的成性丝。多基因系统发育分析证实了它是一种独特的，家族内的单系谱系。顺式剪接基因，被第二组内含子内的内含子编码蛋白质打断，存在于A.liula的叶绿体和线粒体基因组中。值得注意的是,coxI组II内含子的特定区域表现出与真菌内含子的相似性。Anunuuluaehuliula被认为是夏威夷群岛的特有种，到目前为止，已知仅生活在从H_laniku到Kaho\'olawe的中观深度，范围从54到201m，这是家庭中任何代表的最深的收藏记录。总的来说,这项研究增强了我们对中隔生境中红藻的基因组和分类复杂性的理解，强调在这一领域继续研究的意义，以揭示进一步的见解，进化过程和生物地理模式。
