在实验室条件下,以细弱蜈蚣藻(Grateloupia tenuis Wang et Luan)为材料,进行了不同温度和光照强度等主要环境因子对其发育影响的研究,同时对其生活史进行了详细观察。结果表明:(1)在4—30°C范围内,盘状体形成与直立枝生长的最适...在实验室条件下,以细弱蜈蚣藻(Grateloupia tenuis Wang et Luan)为材料,进行了不同温度和光照强度等主要环境因子对其发育影响的研究,同时对其生活史进行了详细观察。结果表明:(1)在4—30°C范围内,盘状体形成与直立枝生长的最适温度为24°C;(2)在光照强度10—200μmol范围内,盘状体形成和直立枝生长的最适光照强度为120μmol/(m2s);(3)孢子(果孢子和四分孢子)发育类型为间接盘状体类型;(4)生活史由单倍体的雌、雄配子体,双倍体的果孢子体(囊果)及四分孢子体构成,四分孢子体和配子体在形态上完全相同,属于典型的同型世代交替;与属模蜈蚣藻(G.filicina)一致。展开更多
在实验室条件下对亚洲蜈蚣藻（Grateloupia asiatica Kawaguchi et Wang）的孢子发育进行了研究，同时探讨了温度（5-30℃）和光照强度（10~200μmol．m^-2·s^-1）对孢子发育的影响；追踪观察了生活史的各个阶段．结果表明：（1）...在实验室条件下对亚洲蜈蚣藻（Grateloupia asiatica Kawaguchi et Wang）的孢子发育进行了研究，同时探讨了温度（5-30℃）和光照强度（10~200μmol．m^-2·s^-1）对孢子发育的影响；追踪观察了生活史的各个阶段．结果表明：（1）亚洲蜈蚣藻的孢子发育类型为“间接盘状体”型（有丝状体出现）；（2）孢子发育和盘状体生长的最适温度为25℃；（3）光照强度（80μmol．m^-2·s^-1）条件下孢子的发育和盘状体生长速度最快；（4）生活史由果孢子体、配子体及四分孢子构成，孢子体和配子体在形态上相同，属于同型世代交替．展开更多
Grateloupia ramosa 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...Grateloupia ramosa 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 the Grateloupia-type. The morphological diff erences were supported by molecular phylogenetics based on ribulose-1, 5-bisphosphate carboxylase/oxygenase( rbc L) 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 large Grateloupia clade of the Halymeniaceae. The pairwise distances between G. ramosa and other species within Grateloupia ranged from 26 to 105 bp, within pairwise distances of 13–111 bp between species of the large genus Grateloupia in Halymeniaceae. Thus, we propose this new species as G. ramosa Wang & Luan sp. nov.展开更多
皮下脂膜炎性T细胞淋巴瘤(Subcutaneous panniculitis-like T cell lymphoma,SPTCL)是淋巴瘤中一种少见的类型,主要累及皮下脂肪组织[1],属于外周T细胞淋巴瘤类别,约占非霍奇金淋巴瘤的1%[2]。临床病理特点常与脂膜炎相似,临床表现以反...皮下脂膜炎性T细胞淋巴瘤(Subcutaneous panniculitis-like T cell lymphoma,SPTCL)是淋巴瘤中一种少见的类型,主要累及皮下脂肪组织[1],属于外周T细胞淋巴瘤类别,约占非霍奇金淋巴瘤的1%[2]。临床病理特点常与脂膜炎相似,临床表现以反复发热、多发皮下结节或肿块多见[3]。少数的SPTCL患者常并发噬血细胞综合征,此类预后差[4]。SPTCL因少见,临床表现特异性不强,且认识不足而多被误诊、误治。本例患者以反复发热及周身多发红斑为首发表现,经过组织病理检查最终确诊为SPTCL,现将其临床诊治过程报告如下。展开更多
文摘在实验室条件下,以细弱蜈蚣藻(Grateloupia tenuis Wang et Luan)为材料,进行了不同温度和光照强度等主要环境因子对其发育影响的研究,同时对其生活史进行了详细观察。结果表明:(1)在4—30°C范围内,盘状体形成与直立枝生长的最适温度为24°C;(2)在光照强度10—200μmol范围内,盘状体形成和直立枝生长的最适光照强度为120μmol/(m2s);(3)孢子(果孢子和四分孢子)发育类型为间接盘状体类型;(4)生活史由单倍体的雌、雄配子体,双倍体的果孢子体(囊果)及四分孢子体构成,四分孢子体和配子体在形态上完全相同,属于典型的同型世代交替;与属模蜈蚣藻(G.filicina)一致。
文摘在实验室条件下对亚洲蜈蚣藻（Grateloupia asiatica Kawaguchi et Wang）的孢子发育进行了研究，同时探讨了温度（5-30℃）和光照强度（10~200μmol．m^-2·s^-1）对孢子发育的影响；追踪观察了生活史的各个阶段．结果表明：（1）亚洲蜈蚣藻的孢子发育类型为“间接盘状体”型（有丝状体出现）；（2）孢子发育和盘状体生长的最适温度为25℃；（3）光照强度（80μmol．m^-2·s^-1）条件下孢子的发育和盘状体生长速度最快；（4）生活史由果孢子体、配子体及四分孢子构成，孢子体和配子体在形态上相同，属于同型世代交替．
基金Supported by the National Natural Science Foundation of China(Nos.3087016131270251)
文摘Grateloupia ramosa 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 the Grateloupia-type. The morphological diff erences were supported by molecular phylogenetics based on ribulose-1, 5-bisphosphate carboxylase/oxygenase( rbc L) 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 large Grateloupia clade of the Halymeniaceae. The pairwise distances between G. ramosa and other species within Grateloupia ranged from 26 to 105 bp, within pairwise distances of 13–111 bp between species of the large genus Grateloupia in Halymeniaceae. Thus, we propose this new species as G. ramosa Wang & Luan sp. nov.
文摘皮下脂膜炎性T细胞淋巴瘤(Subcutaneous panniculitis-like T cell lymphoma,SPTCL)是淋巴瘤中一种少见的类型,主要累及皮下脂肪组织[1],属于外周T细胞淋巴瘤类别,约占非霍奇金淋巴瘤的1%[2]。临床病理特点常与脂膜炎相似,临床表现以反复发热、多发皮下结节或肿块多见[3]。少数的SPTCL患者常并发噬血细胞综合征,此类预后差[4]。SPTCL因少见,临床表现特异性不强,且认识不足而多被误诊、误治。本例患者以反复发热及周身多发红斑为首发表现,经过组织病理检查最终确诊为SPTCL,现将其临床诊治过程报告如下。
