scholarly journals The Use of DNA Barcoding and Phylogenetic Analysis to Improve Identification of Usnea spp. Based on ITS rDNA

2021 ◽  
Vol 6 (1) ◽  
pp. 58635
Author(s):  
Miftahul Jannah ◽  
Muhammad Rifqi Hariri ◽  
Rina Sri Kasiamdari ◽  
Niken Satuti Nur Handayani

Lichen of the genus Usnea is quite common being used as a traditional herbal remedy. This genus is characterized by thallus, which is very similar among the species, leads to some difficulties in distinguishing them. In Indonesia, such research report on the availability of this genus based on their morphological characteristic is minimal. This might be due to too high morphological similarities among them. The molecular character, which is based on the DNA Barcode of Internal Transcribed Spacer (ITS) rDNA sequences, with its conserved region (5.8S) and varied region (ITS1 and ITS2), are becoming essential characters on identifying as well as analyzing the phylogenetic. The current study then proposed to identify and draw the species dendrogram of species within the Usnea genus obtained from Mount Lawu Forest of Central Java and Turgo Forest of Yogyakarta based on their phylogenetic and phenetic analysis. The dendrogram was constructed with UPGMA using the simple matching coefficient, whereas the phylogenetic tree was constructed with Maximum Likelihood (ML) using Kimura-2 parameter with 1000 bootstrap. The data were unable to draw phenetic relationships among the subgenus Usnea and Eumitria members. The phylogenetic tree shows the primary two clades, distinguishing the subgenus Usnea and Eumitria. The ITS rDNA sequence was able to identify most of the Usnea species.

2006 ◽  
Vol 61 (5-6) ◽  
pp. 405-412 ◽  
Author(s):  
Demet Cansaran ◽  
Sümer Aras ◽  
İrfan Kandemir ◽  
Gökhan Halıcı

Like many lichen-forming fungi, species of the genus Rhizoplaca have wide geographical distributions, but studies of their genetic variability are limited. The information about the ITS rDNA sequences of three species of Rhizoplaca from Anatolia was generated and aligned with other species from other countries and also with the data belonging to Lecanora species. The examined species were collected from the volcanic rocks of Mount Erciyes which is located in the middle of Anatolia (Turkey). The sequence data aligned with eight other samples of Rhizoplaca and six different species of Lecanora were obtained from GenBank. The results support the concept maintained by Arup and Grube (2000) that Rhizoplaca may not be a genus separate from Lecanora. According to the phylogenetic tree, Rhizoplaca melanopthalma from Turkey with two different samples of R. melanopthalma from Arizona (AF159929, AF159934) and a sample from Austria formed a group under the same branch. R. peltata and R. chrysoleuca samples from Anatolia located in two other branches of the tree formed sister groups with the samples of the same species from different countries. Although R. peltata remained on the same branch with other samples of the same species from other countries it was placed in a different branch within the group. When the three species from Anatolia were considered alone, it was noticed that Rhizoplaca melanopthalma and Rhizoplaca peltata are phylogenetically closer to each other than Rhizoplaca chrysoleuca; the morphological characteristics also support this result.


2021 ◽  
Vol 9 (1) ◽  
pp. 49-55
Author(s):  
Vanlal hruaia ◽  
◽  
Lal rinmuana ◽  
J Lalbiaknunga ◽  
Laldinfeli Ralte

Euphorbiaceae is one of the largest family of flowering plants, in our study different species were collected from different localities of Mizoram, the collected specimens were studied and their morphological features noted. 34 genera of Euphorbiaceae s.l were used in the study. Cladistic analysis was performed in Mesquite software and Phenetic analysis was done in NTsys software. Both analyses produce a pictorial representation in a form of a tree; cladistic analysis produce phylogenetic tree (evolutionary relationship) while phenetic analysis produce phenogram (morphological relationship). The results of the aforementioned analyses were further analysed by total evidence technique and taxonomic congruence, a phylogenetic software PAUP is used for this purpose. The resultant trees were very different and comparison was done to find correlation between evolution and morphological characters. The research finds various correlation among characters like the number of locule in ovule, phyllanthoid branching and support the inclusion of genus like Breynia, Sauropus into Phyllanthus.


Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2023
Author(s):  
Suwimol Thariwong ◽  
Aekkhaluck Intharuksa ◽  
Panee Sirisa-ard ◽  
Wannaree Charoensup ◽  
Sunee Chansakaow

The Pikad Tri-phol-sa-mut-than (TS) remedy, a Thai traditional medicine, is officially recorded in Tamra Paetsart Sonkrau Chabub Anurak for its capabilities in treating kidney deficiency. TS remedy is composed of three fruit species—Aegle marmelos (L.) Corrêa., Coriandrum sativum L., and Morinda citrifolia L.—in an equal part by weight. The quality of the raw material is one of the essential factors that can affect the effectiveness and safety of treatment by herbal remedy. The pharmacognostic evaluation and DNA barcode of the three fruit species and TS remedy were performed in this study to authenticate them from contamination, and to provide the scientific database for further uses. Macroscopic and microscopic examination, chemical profile by TLC, and DNA barcoding were employed to positively identify the raw materials bought from the herbal market, especially the powder form. Consequently, the outcomes of this investigation can be used to develop an essential and effective tool for the authentication of crude drugs and herbal remedies.


el–Hayah ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 112-125
Author(s):  
Yudrik Lathif ◽  
Riri Wiyanti Retnaningtyas ◽  
Dwi Listyorini ◽  
Suharti Suharti

The genetic resources identification of Indonesian local rice varieties is a crucial work should be done to conserve our native germplasm. This research aimed to know the taxonomical position of East Java local rice varieties including Jawa (JW), Berlian (BR), and SOJ A3 (SJ) using DNA barcode based on rbcL gene. Total DNA of each sample was isolated from leaves. A pair of forward 5'-ATG TCA CCA CAA ACA SJA AC-3' and reverse 5'-TCG GTA CCT GCA GTA GC-3' primers were used to amplify fragments of rbcL gene resulting in 751bp, 755bp, and 754bp fragments from BR, SJ, and JW varieties, respectively. Phylogenetic tree reconstruction revealed that our three local varieties were forming a cluster separated from the widely cultivated subspecies Oryza sativa Indica and Oryza sativa Japonica. However, further studies are necessary to reveal a more precise position of the local varieties in a phylogenetic tree on the species level.


Nematology ◽  
2003 ◽  
Vol 5 (1) ◽  
pp. 99-111 ◽  
Author(s):  
Zahra Tanha Maafi ◽  
Sergei Subbotin ◽  
Maurice Moens

Abstract RFLP and sequences of ITS-rDNA of 45 populations of cyst-forming nematodes collected from different parts of Iran were analysed and identified as representatives of 21 species. Eight enzymes generated RFLP for all studied populations. Comparison of RFLP profiles and sequences of the ITS regions with published data confirmed the presence of Heterodera avenae, H. filipjevi, H. glycines, H. hordecalis, H. latipons, H. schachtii and H. trifolii in Iran. RFLP patterns and ITS sequences for H. elachista, H. turcomanica, H. mothi and C. cacti were obtained for the first time in this study. Heterodera humuli, H. goettingiana, H. fici, H. elachista, H. turcomanica and Cactodera cacti are recorded for the first time in Iran. These results correspond with morphological and morphometric identification of the populations. Several populations were not identified at the species level and are attributed to Heterodera sp.; some of these may correspond to new species. Twenty-one new sequences from Iranian cyst-forming nematodes and 36 known sequences were used for the phylogenetic analyses. The cyst-forming nematodes formed several clades corresponding to their morphological features. Heterodera mothi and H. elachista clustered with high support with other Cyperi group species and H. turcomanica formed a moderately to highly supported clade with the Humuli group.


2003 ◽  
Vol 56 (2) ◽  
pp. 141-145 ◽  
Author(s):  
Iva Král'ová-Hromadová ◽  
David F. Tietz ◽  
Andrew P. Shinn ◽  
Marta Špakulová

Phytotaxa ◽  
2016 ◽  
Vol 243 (2) ◽  
pp. 163 ◽  
Author(s):  
Jiao Yang ◽  
Karen K. Nakasone ◽  
Shuang-Hui He

A new brown-rot fungal species, Veluticeps fasciculata, is described from southern China. It is characterized by perennial effused basidiocarps with smooth or tuberculose hymenophore, nodose-septate generative hyphae, fasciculate cystidia (as hyphal pegs in hymenophore) and relatively small basidiospores. It occurs on wood of Cunninghamia and Cryptomeria. Although similar to Veluticeps berkeleyi, morphological and molecular (ITS rDNA sequences) data show that V. fasciculata is a distinct species. Complete description and illustrations are provided for the V. fasciculata. In addition, V. fimbriata is reported from China for the first time.


2001 ◽  
Vol 33 (1) ◽  
pp. 73-86 ◽  
Author(s):  
Gert Helms ◽  
Thomas Friedl ◽  
Gerhard Rambold ◽  
Helmut Mayrhofer

AbstractThe identity of photobionts from 20 species of the Physciaceae from different habitats and geographical regions has been determined by ITS rDNA sequence comparisons in order to estimate the diversity of photobionts within that lichen group, to detect patterns of specificity of mycobionts towards their photobionts and as a part of an ongoing study to investigate possible parallel cladogenesis of both symbionts. Algal-specific PCR primers have been used to determine the ITS rDNA sequences from DNA extractions of dried lichens that were up to 5 years old. Direct comparisons and phylogenetic analyses allowed the assignment of Physciaceae photobionts to four distinct clades in the photobiont ITS rDNA phylogeny. The results indicate a diversity within the genus Trebouxia Puymaly and Physciaceae photobionts that is higher than expected on the basis morphology alone. Physciaceae photobionts belonged to 12 different ITS lineages of which nine could unambiguously be assigned to six morphospecies of Trebouxia. The identity of the remaining three sequences was not clarified; they may represent new species. Specificity at the generic level was low as a whole range of photobiont species were found within a genus of Physciaceae and different ranges were detected. The photobionts of Physcia (Schreb.) Michaux were closely related and represented one morphospecies of Trebouxia, whereas the algal partners of Buellia De Not and Rinodina (Ach.) Gray were in distant lineages of the ITS phylogeny and from several Trebouxia morphospecies. Photobiont variation within a genus of Physciaceae may be due to phylogeny, geographical distance or because photobionts from neighbouring lichens were taken (“algal sharing“). At the species level Physciaceae mycobionts seem to be rather selective and contained photobionts that were very closely related within one morphospecies of Trebouxia.


2012 ◽  
Vol 88 (1) ◽  
pp. 64-68 ◽  
Author(s):  
G.H. Liu ◽  
W. Zhou ◽  
A.J. Nisbet ◽  
M.J. Xu ◽  
D.H. Zhou ◽  
...  

AbstractTrichuris trichiura and Trichuris suis parasitize (at the adult stage) the caeca of humans and pigs, respectively, causing trichuriasis. Despite these parasites being of human and animal health significance, causing considerable socio-economic losses globally, little is known of the molecular characteristics of T. trichiura and T. suis from China. In the present study, the entire first and second internal transcribed spacer (ITS-1 and ITS-2) regions of nuclear ribosomal DNA (rDNA) of T. trichiura and T. suis from China were amplified by polymerase chain reaction (PCR), the representative amplicons were cloned and sequenced, and sequence variation in the ITS rDNA was examined. The ITS rDNA sequences for the T. trichiura and T. suis samples were 1222–1267 bp and 1339–1353 bp in length, respectively. Sequence analysis revealed that the ITS-1, 5.8S and ITS-2 rDNAs of both whipworms were 600–627 bp and 655–661 bp, 154 bp, and 468–486 bp and 530–538 bp in size, respectively. Sequence variation in ITS rDNA within and among T. trichiura and T. suis was examined. Excluding nucleotide variations in the simple sequence repeats, the intra-species sequence variation in the ITS-1 was 0.2–1.7% within T. trichiura, and 0–1.5% within T. suis. For ITS-2 rDNA, the intra-species sequence variation was 0–1.3% within T. trichiura and 0.2–1.7% within T. suis. The inter-species sequence differences between the two whipworms were 60.7–65.3% for ITS-1 and 59.3–61.5% for ITS-2. These results demonstrated that the ITS rDNA sequences provide additional genetic markers for the characterization and differentiation of the two whipworms. These data should be useful for studying the epidemiology and population genetics of T. trichiura and T. suis, as well as for the diagnosis of trichuriasis in humans and pigs.


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