rdna 中文意思是什麼

Phylogenetic relationships with the gorgonian cndaria : anthozoa : octocorallia based on 18s rdna sequences

探討柳珊瑚分子系統發育關系

The blastn results show that gyn - 15 is closely related to a symbiont of anemones, s. californium, and the free - living strain, gymnodinium varians. sequence comparison show that the similarities among each part of the sequences from these three strains are all above 99 %. phylogenetic reconstruction with neighbor - joining ( nj ) method using sequences of variable regions ( v1 + v2 + v3 ) of ssu rdna indicated that gyn - 15, s. californium and g. varians form a new clade with 100 % bootstrap support

以ssurdna序列中的三個可變區（ vz + vz + v3 ）和鄰接法困eighbor一joiningmethod ， nj法）構建共生甲藻屬的系統進化樹表明， gyn一巧與5 . cal扣rnium和g . varian :在共生甲藻屬內構成一個獨立的、自檢支持百分率為100 %的子類群（ clade ） ，根據這些結果可將gyn一巧初步鑒定為屬于共生甲藻屬。

The first part of this study is polyphasic taxonomy analysis of the thirteen strains which have herbicidal activities. the polyphasic taxonomy methods include morphology, cytochemistry, dna g + c mol %, phylogenetic analysis of 16s rdna sequences and physiological and biochemical experiments

本實驗的第一部分對具有除草活性的13株放線菌（ 40001 40013 ）進行了系統的多相分類研究，採用了形態學、細胞化學組分、 dnag + cmol 、 16srdna序列分析及生理生化實驗等技術方法。

However, the variation patterns of rdna in gymnosperms are little known because of the limited sequence data

但是在裸子植物中由於研究資料的匱乏，使我們對裸子植物rdna的變異模式了解甚少。

In contrast, sequences from two strains gymnodinium are divergent ( the sequence similarities of the small subunit ( ssu ) rdna, the its1, the 5. 8s rdna, the its2 and the large subunit ( lsu ) rdna are 76. 5 %, 25. 4 %, 54. 2 %, 23. 2 %, 56. 5 %, respectively ), though their phylogenetic positions are relatively close

，編號為gyn - 15 ） 、一株米氏裸甲藻（ gymnodiniummikimotoi ） ）雖然進化距離接近，但它們的rdna序列相似性卻很低，全長序列的相似性僅為54 . 1 。

Physical mapping of 45s rdna on metaphase chromosomes in several plant species

在多種植物中期染色體上的定位

The phylogenetic relationship of cordyceps based on the its sequence analysis of rdna showed all of the species in this experiment have been divided into two groups by molecular systematic classification, group one including the species with perithecia wholly immersed, and group two including those with perithecia not or half immersed. it means the position of perithecia in the stroma is very important characteristic

在埋生類群中，子囊殼斜埋生的種，即屬于新蟲草亞屬的沫蟬蟲草和雙頭蟲草，以及蟲草亞屬的下垂蟲草都被歸到一個類群之中，垂直埋生的類型被歸到另一類群中，在埋生類群中，除大團囊蟲草和c 。

The 16s rdna / rna sequencing analysis of 4 morphological representative strains ( bd86, yn78, bd54, shx9 ) was carried out. complete sequences of them were obtained and phylogenesis analysis was carried out of suborder cystobacterineae, their phylogenetic position was determined

挑選了4株形態較具代表性的菌株進行16srdna序列測定，以初步確定其歸屬，這4株菌編號分別為bd86 、 yn78 、 bd54 、 shx9 。

Phylogenetic analysis of polychaetes based on sequences of 18s rdna and co segments

基因序列片段及其分子系統發育研究

Use of rpo b and 16s rdna genes to analyze rumen bacterial diversity of goat using pcr and dgge

基因的變性梯度凝膠電泳技術對山羊瘤胃細菌多樣性的研究

In this study, actinomycetes isolated have been analyzed using polyphasic taxonomy technology including morphological and physiological tests, analysis of chemotaxonomy, dna g + c content and 16s rdna / rna sequencing

採用形態學、細胞化學、生理生化、 dnag + cmol及16srdna序列分析等多相分類的技術對所分離的部分放線菌進行了系統的分類研究。

On the other hand, studies on the quantitatively rapid detection using the divergent sequences of rdna are one of the most common focuses on phytoplanktonic ecology

同時，以rdna序列多樣性為基礎建立浮游植物的定量檢測方法，是目前浮游植物生態學研究的熱點之一。

The divergent sequences of rdna from s. costatum are used to design primers meeting the requirements of the rfq - pcr. seven pairs of primers are designed and designated as primer 1 ( f / r ) ~ primer 7 ( f / r ), respectively, among which primer 1 ( f / r ), primer 2 ( f / r ), primer 5 ( f / r ), primer 6 ( f / r ) showed high level of specificities to s. costatum. then, the pcr products primed by primer6 ( f / r ) are sequenced

首先以中肋骨條藻的rdna序列為設計種特異性引物的靶區域，共設計出7對適合rfq - pcr的引物（依次命名為primer1 （ f r ） primer7 （ f r ） ） ，並用常規pcr實驗初步證明其中有4對引物（ primer1 （ f r ） 、 primer2 （ f r ） 、 primer5 （ f r ） 、 primer6 （ f r ） ）可作為中肋骨條藻特異性引物的候選者；然後測定了以primer6 （ f r ）為引物的pcr產物的序列，序列分析表明，中肋骨條藻的pcr產物序列與其他藻的pcr產物序列差別較大，從中可設計出滿足rfq - pcr需要的taqman探針（命名為taqman6 ） ；進一步的核酸雜交實驗表明， taqman6隻與中肋骨條藻的pcr產物雜交，不與其他藻的pcr產物雜交。

Restriction fragment lenth polymorphism ( rflp ) analysis n random amplified polymorphic dna analysis [ rapd ], the sequence analysis of internal transcribed spacers ( its ) of ribosomal dna ( rdna ), induction of microcyclic conidiation, sem ( scanning electron microscopy ) ascosporal isolation and other methods were applied to study more than 100 specimens or isolates of cordyceps, its anamorphs and other entomogenous fungi

本文採用了rapd 、 rdnaits的rflp 、 rdna的its序列分析、誘發微循環產孢、掃描電鏡觀察、子囊孢子分離等方法研究了蟲草及其他蟲生真菌的100多個標本或菌株。

The application of sequence analysis of rdna fragment to the systematic study of the subfamily cyrtandroideae gesneriaceae

片段的序列分析在苦苣苔亞科系統學研究中的應用

The analyses of these three types of data in the hybrid and its parents could provide new information on genomic composition and evolutionary mechanisms of the hybrid. the main results are the followings : 1. rdna fish chromosomal localization of 18s and 5s rdna was carried out for two soft pines ( subgenus strobus ) and five hard pines ( subgenus pinus ) using fish

Rdna熒光原位雜交（ fish ）通過對華山松和白皮松兩種單維管束亞屬植物及油松、雲南松、高山松、馬尾松和南亞松等五種雙維管束亞屬植物的18srdna與5srdna的熒光原位雜交，結果表明： （ 1 ）裸子植物的18srdna位點數目明顯多於二倍體被子植物。

The number of major 18s rdna sites is generally much more than that in angiosperms and varies markedly among pines. there are seven pairs of 18s sites in pinus tabulaeformis, five in p. desata, eight in p. yunnanensis, 10 in p. massoniana, six in p. latteri, three in p. bungeana, and ten for p. armandi

其中主要位點數目，油松有7對，高山松5對，雲南松8對，馬尾松10對，南亞松6對，白皮松3對，華山松10對，平均在7對；另外，部分松樹還存在弱位點。

Genetic diversity which was determined by the analysis of 16s rdna - rflp and 16s rdna - sequencing were carried out on frankia strains isolated from the root nodules of different actinorhizal plants, including myrica, casuarina, alnus and coriaria. the main results of the research project were as follows

本研究課題對來自楊梅（ myrica ） 、木麻黃（ casuarina ） 、榿木（ alnus ）和馬桑（ coriaria ）的13株frankia菌純培養的16srrna基因進行了pcr - rflp分析和部分菌株的序列測定，初步探討了弗蘭克氏菌的遺傳多樣性和系統發育地位。

The phylogenetic analysis of these two nonmarine crabs together with intertidal, supratidal and swimming crabs based on portions of mitochondrial 16s rdna sequences suggested that grapsioidea, ocypodoidea, potamoidea and portunoidea arose from a common marine ancestor, and the estimated divergence time are similar. the freshwater crab phylogeny suggested that the genus sinopotamon and the genus potamonautes arose from a common ancestor and the estimated divergence time is about 36 - 44 mya

基於線粒體16srdna部分序列，對這2個類型的非海洋蟹類與潮間帶蟹類、海洋蟹類之間的系統發生分析提示，方蟹總科（ grapsioidea ） 、沙蟹總科（ ocypodioidea ） 、溪蟹總科（ potamoidea ）和梭子蟹總科（ portunoidea ）的蟹類起源於一個共同的海洋蟹類祖先，它們彼此之間的歧異時間基本一致。

The 16s rdna pcr - rflp revealed 9 different genotypies among the 12 isolates. the patterns of slow - growers were markedly different to that of fast - growers. ccbau61116x ccbau41069 ccbau23168 had identical restriction patterns

16srdnapcr - rflp聚類分析結果在90的相似性水平上把慢生型根瘤菌分成7群，也證明了葛藤根瘤菌種水平的多樣性。