Grateloupia ramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta), a new species from China based on morphological evidence and comparative rbcL sequences
Grateloupia ramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta), a new species from China based on morphological evidence and comparative rbcL sequences
复制标题
DOI：
10.1007/s00343-015-4335-z
复制
发表时间：
2016-03
影响因子：
--
通讯作者：
C. Cao;Miao Liu;Shaoru Guo;Dan-Ni Zhao;Rixiao Luan;Hongwei Wang
中科院分区：
文献类型：
--
作者：
C. Cao;Miao Liu;Shaoru Guo;Dan-Ni Zhao;Rixiao Luan;Hongwei Wang
Grateloupiaramosa Wang & Luan sp. 11 . （halmeniaceae, rhodophyia）为海南新发现。该生物具有以下形态特征：(1)菌体呈紫红色，高5 ~ 10厘米，呈软骨状，呈润滑状；(2)过流轴受压，分支丰富，排列相反；(3)顶端爪状尖，在基部缩窄至2-4厘米；(4)皮层由3-6层椭圆形或不规则细胞组成，髓质被致密的髓丝覆盖；(5)生殖结构分布于整个菌体，尤其集中在枝端部底部；(6) 4细胞的叉状分支和3细胞的辅助细胞分支，均为grateloupiia型。基于核酮糖- 1,5 -二磷酸羧化酶/加氧酶（rbcL）基因序列分析的分子系统发育支持了形态学差异。海南文昌和陵水标本的差异仅为1 bp。这个新种被嵌入在大的海棠科的海棠纲中。的成对距离。ramosaa和其他物种分布在26 ~ 105 bp之间，大属grateloupiin halmeniaceae种间的成对距离在13 ~ 111 bp之间。因此，我们提出这个新种为asG。ramosaWang & Luan sp. 11
Grateloupiaramosa Wang & Luan sp. nov. (Halymeniaceae, Rhodophyta) is newly described from Hainan Province, southern China. The organism has the following morphological features: (1) purplish red, cartilaginous and lubricous thalli 5–10 cm in height; (2) compressed percurrent axes bearing abundant branches with opposite arrangement; (3) claw-like apices on top, constricted to 2–4 cm at the base; (4) cortex consisting of 3–6 layers of elliptical or anomalous cells and a medulla covered by compact medullary filaments; (5) reproductive structures distributed throughout the thallus, especially centralized at the bottom of the end portion of the branches; and (6) 4-celled Carpogonial branches and 3-celled auxiliary-cell branches, both of theGrateloupia-type. The morphological diff erences were supported by molecular phylogenetics based on ribulose-1, 5-bisphosphate carboxylase/oxygenase (rbcL) gene sequence analysis. There was only a 1 bp divergence between specimens collected from Wenchang and Lingshui of Hainan province. The new species was embedded in the largeGrateloupiaclade of the Halymeniaceae. The pairwise distances betweenG. ramosaand other species withinGrateloupiaranged from 26 to 105 bp, within pairwise distances of 13–111 bp between species of the large genusGrateloupiain Halymeniaceae. Thus, we propose this new species asG. ramosaWang & Luan sp. nov.