异形胞

提高光强和NaCl浓度能够增加异形胞的比例。

Heterocyst frequency was enhanced by higher light intensity and NaCl concentration .

AnabaenaPCC7120中异形胞的发育与DNA复制协调关系的机制研究

Relationship between the Heterocyst Development and DNA Replication in Anabaena sp. Strain PCC 7120

AnabaenaPCC7120中异形胞发育的信号传导机制研究

Signal Transduction Involved in Heterocyst Development in Anabaena PCC 7120

上述结果表明用毛地黄皂苷法分离的异形胞具有较完整的DCIPH2→MV的PSI活性。

The above results indicate that isolated heterocysts by this method possess an activity of PSI of DCIPH_2 → MV photosynthetic electron transport .

该结果表明HanA蛋白在异形胞中可能不行使功能，因而被逐渐降解。

Thses results showed that HanA did not play essential roles in heterocysts and thus was gradually degraded in heterocyst .

结果表明阳光UVR严重抑制生长、光系统Ⅱ最大光化学效率（Fv／Fm）、降低藻丝长度并抑制异形胞分化。

The results show that solar UVR severely inhibited growth and maximum quantum yield of PSII ( Fv / Fm ), reduced trichome length and depressed the differentiation of heterocysts .

本研究也尝试通过定点突变在AnabaenaPCC7120中筛选温度敏感型菌株，以便于考察细胞周期和异形胞分化之间的关系。

We attempted to screen temperature-sensitive Anabaena PCC 7120 strain through site-directed mutagenesis in dnaA in order to study the relationships between DNA replication and heterocyst development .

在强PAR照射下，最初发生光抑制，随后生长和最大光化学效率都逐步恢复，而且异形胞分化能力增强，并干扰了正常的异形胞分裂模式，使藻丝体中形成相邻异形胞。

Following an initial inhibition under high PAR , growth and maximum quantum yield were stimulated , and heterocyst formation was enhanced and high PAR interfered with the normal pattern of heterocyst differentiation with contiguous heterocysts formed in filaments .

当提供DCIP和抗坏血酸时，被压碎的异形胞能够光还原甲基紫精，其活性为360消耗O2的微克分子/毫克叶绿素/小时。

The DCIP + ascorbate → methyl viologen activity of this isolated heterocysts was 360 μ mol O_2 consumed / mg Chl . h.

与BG11（-N）相比，在BG11（-N）+小麦处理中，念珠藻中只有9101∶1的异形胞频率与BG11（-N）处理有差异，其异形胞频率为9.47～16.55%。

However , only was the heterocyst frequency of the 9101 . ' 1 strain in the treatment of wheat and BG11 ( - N ) medium more obviously different than that in BG11 ( - N ) medium . The heterocyst frequency ranged from 9.45 % to 16.55 % .

鱼腥藻7120异形胞分化的调节及细胞蛋白的变化

The regulation of heterocyst differentiation and changes of cell proteins in Anabaena 7120

有重点地实现科技的跨越式发展藻丝的营养细胞是扁平的，具异形胞。

Development of S & T The filament possesses oblate cell for nutrition and heterocyst .

该生物能进行细胞发育过程形成能进行固氮作用的细胞，即异形胞。

This organism can undergo a developmental process leading to the formation of nitrogen-fixing cells , heterocysts .

光镜下瘤组织富于血窦，其间充满多角形的间质细胞，具有异形胞核和泡沫状的胞浆。

The tumor tissues contained various vascular sinus between them presented polygonal stroma cells having plomorphic nuclei and foamy cytoplasm .

异形胞可溶部分的蛋白酶活比营养细胞可溶的蛋白酶活高4&5倍。

The activity of the soluble protease of heterocyst was 4 & 5 times higher than that of the vegetative cell .

鱼腥蓝细菌PCC7120是一种丝状的固氮蓝细菌，在环境中缺乏化合态氮源的时候能够分化异形胞来固定空气中的氮气。

Anabaena PCC 7120 is a nitrogen-fixing filamentous cyanobacterium . When the combined-nitrogen source is limited in the environment , heterocysts are produced to fix nitrogen from the air .

结果显示，有一个突变株不能分化异形胞；三个突变株可以形成异形胞，但在缺氮的条件下仍不能维持生长；

The result showed that one mutant was unable to differentiate heterocyst , three formed heterocysts but still could not maintain normal growth , four growed slowly with heterocyst differentiation .

经抗寒锻炼的丝状体有一定的存活率；在适于形成膨大藻丝的条件下，丝状体存活率最高，可达60%以上.藻丝的营养细胞是扁平的，具异形胞。

The conchocelis under the condition which is fit to form sporangial branchlets has the highest survival rate reaching more than 60 % . The filament possesses oblate cell for nutrition and heterocyst .

当培养基中缺乏化合态氮源的时候，整条菌丝上大概有5%-10%的细胞会分化成具有专一固氮功能的异形胞。

When the growth medium is deprived of combined nitrogen sources , 5 % - 10 % of the cells along each filament will differentiate into heterocysts which are specialized for nitrogen fixation .

鱼腥藻和其他蓝藻的外膜是吸收营养物质的第一道屏障，在鱼腥藻中还可能直接影响异形胞包被的形成，但迄今为止，有关蓝藻外膜蛋白的功能尚缺乏研究。

Outer membrane of Anabaena and other cyanobacteria is the first barrier for nutrition uptake , and in Anabaena even affects the development of heterocyst envelope . But until now , few functional studies have been done about outer membrane proteins of cyanobacteria .

CD44棕黄色免疫阳性反应物见于提示可能性诊断为恶性病变中92%的异形细胞胞膜，未见于其他细胞中。

CD44 was positive in 92 % of malignant cells , but not in other cells .