共查询到20条相似文献，搜索用时 0 毫秒
1.
Hajibarat Zahra Saidi Abbas Hajibarat Zohreh Talebi Reza 《Physiology and Molecular Biology of Plants》2015,21(3):365-373
Physiology and Molecular Biology of Plants - To evaluate the genetic diversity among 48 genotypes of chickpea comprising cultivars, landraces and internationally developed improved lines genetic... 相似文献
2.
There is a need for an appropriate evaluation of Hemarthria germplasm resources using genetic analysis. Understanding their genetic background will promote effective development and utilization of its germplasm resources in plant breeding. We examined the genetic diversity and relationships among 46 Hemarthria germplasm resources from four continents. Expressed Sequence Tags-Simple Sequence Repeat (EST-SSR) and Start Codon Targeted (SCoT) markers were used to investigate species Hemarthria altissima (36), Hemarthria compressa (8) and Hemarthria uncinata (2). We selected 19 EST-SSR primers and generated 550 polymorphic (94.7%). Twenty one SCoT primers were selected and amplified to produce 597 bands with 89.4% of polymorphic bands. The Mantel test between EST-SSR and SCoT matrices revealed significant correlations (r = 0.854) and the data from both markers were combined for cluster analysis. The 46 materials were clustered into two main groups by UPGMA clustering with a similarity coefficient ranging from 0.573 to 0.940 and the dendrogram was basically concordant with geographical origins and species. Among the three Hemarthria species, H. altissima was genetically closest to H. compressa while it was not close to H. uncinata. When the utility of the two markers were compared, we found EST-SSR to be more efficient than SCoT in determining the genetic diversity study of Hemarthria species. 相似文献
3.
In order to evaluate whether the two wild species, Panax vietnamensis (from Vietnam) and Panax stipuleanatus (from primeval forest, Yunan Province) could markedly increase the genetic diversity of cultivated Panax notoginseng (Wenshan, Yunnan Province), both start codon targeted (SCoT) markers and internal transcribed spacer (ITS) DNA barcode were firstly employed in this genus. A total of 173 amplification bands were generated by 16 selected SCoT primers, in which 153 (89.5%) were polymorphic. Nei's gene-diversity indicated that the genetic diversity of three species (h = 0.16 and I = 0.27) was obviously higher than that of P. notoginseng (h = 0.09). Similarly, 38 different ITS sites out of 639 (5.9%) were detected among three species, but only one was different within 22 samples of P. notoginseng. Analysis of molecular variance (AMOVA) showed a greater proportion of genetic diversity existed within (61.3%) rather than among (38.7%) groups at genus level. In addition, P. vietnamensis had a closer relationship with P. notoginseng than P. stipuleanatus. These results would be significant for increasing the genetic diversity of P. notoginseng population by hybridization with P. vietnamensis and P. stipuleanatus, thus obtaining more varieties for future cultivar breeding and germplasm resources management. 相似文献
4.
Genetic diversity and relationship of Lycoris species were investigated using SCoT marker analysis. Of 57 SCoT primers screened, 23 SCoT primers were identified to be high polymorphism. A total of 154 DNA bands with size varied from 0.2 kb to 2.5 kb were amplified, and 131 (82.5%) of them were polymorphic. The average number of polymorphic DNA band per primer was 5.7. Based on Nei's similarity coefficients and genetic distances, total of 43 accessions from 14 species of the genus Lycoris tested were clustered into four groups. Group I consisting of 17 accessions was further divided into two subgroup (Ia and Ib). Subgroup Ia included four species with red flower and 22 (2n) chromosomes. Subgroup Ib contained Lycoris haywardii and Lycoris albiflora which were natural hybrids with oyster white flower. Group II consisted of three species with yellow flower and 16 (2n) chromosomes. Group III was composed of Lycoris Squamigera, Lycoris incarnata and all of hybrids whose flower color was variegated. Group IV only has one species (Lycoris sprengeri) whose petal was a mixture of pink and blue. Notably, the polymorphism generated by SCoT was associated with flower color and chromosome number in this genus plants. The present data provide high-valued information for the management of germplasm, genetic improvement, and conservation of the genetic resources of Lycoris species, important horticulture and medical plants. 相似文献
5.
Date plum persimmon (Diospyros lotus L.) is an important fruit crop in China due to its better compatibility as a major root stock for Diospyros kaki Thunb. The objective of this study was to reveal the diversity and taxonomic status based on morphological and molecular markers for 26 date plum persimmon accessions from different ecogeographical areas. Significant variability was observed in the 26 date plum persimmon accessions using the analysis of 5 quantitative and 16 qualitative morphological characters of branches, fruits and seeds. Molecular diversity was analyzed using start codon targeted (SCoT) markers. A total of 118 bands were produced with 11 SCoT primers; genetic similarity was ranged from 0.42 to 0.83, which indicating higher genetic variation among accessions. Based on the cluster results of morphological and molecular data, the results showed that date plum persimmon may be divided into five taxonomic types which including male date plum persimmon, rounded seedless date plum persimmon, rounded seedy date plum persimmon, obround seedless date plum persimmon, and oblate seedy date plum persimmon. 相似文献
6.
本研究利用SCoT标记对96份柳枝稷种质的亲缘关系和遗传变异进行了研究。筛选出20条引物对96份供试材料进行PCR扩增,共获得445条带,其中多态性条带402条,平均多态性条带比率(PPB)达90.31%,多态性信息含量(PIC)为0.166~0.410,平均值为0.332,标记指数(MI)为10.20。遗传相似系数(GS)为0.498~0.912,平均值为0.688。表明SCoT标记能够揭示柳枝稷种质间的遗传变异。通过UPGMA分析表明,96份种质资源聚为高地型和低地型两大类。经POPGENE1.32软件分析结果显示:96份柳枝稷基因多样性指数(H)为0.285,Shannon指数(I)为0.431,表明供试的种质间遗传多样性丰富,遗传多样性水平高。经AMOVA 1.55方差分析揭示:96份柳枝稷生态型内的遗传变异占总变异的72.85%,生态型间遗传变异占总变异的27.15%,结果表明ScoT可用于柳枝稷遗传多样性研究,该研究结果可为柳枝稷种质资源的进一步开发利用提供重要信息。 相似文献
7.
Ploidy differences can occur between and within species. To decipher the genetic structure of a species with different ploidy levels, we investigated an area of China where diploid and triploid individuals of Lycoris radiata co-occur. Twenty-six populations of L. radiata were sampled across its natural range, and SCoT markers were used to assess the genetic diversity and population structure. Chromosome counts revealed that 10 populations were diploid and 16 were triploid, each population showed a single cytotype. SCoT analysis revealed high genetic diversity at the species level (PPB = 93.1%; H = 0.258; I = 0.396). However, compared to the triploid strains of Lycoris, the diploid strains had a relatively higher genetic diversity. One possible interpretation for these results is that the triploid strains only propagated using bulb division, while the diploid strains reproduced using sexual propagation and bulb division. Our investigation of the genetic structure, based on UPGMA and PCoA cluster analyses, revealed that populations of L. radiata are divided into three genetic groups. In addition, our results indicate that Yangtze River can affect population diffusion, which played an important role in the genetic differentiation of L. radiata. Lastly, our results suggest that the triploid sterile species of L. radiata might possess two origins. 相似文献
8.
利用SRAP和SCoT两种分子标记相结合对中国22个番木瓜主要栽培品种(系)进行遗传多样性研究。SCoT标记检测获得的遗传多样性参数值和遗传相似系数范围均高于SRAP标记检测的结果,表明SCoT标记检测多态性的能力高于SRAP标记。基于两种标记数据合并后的UPGMA聚类结果显示,番木瓜种质间的遗传相似系数为0.65~0.90,种质间遗传多样性水平较低;在遗传相似系数为0.82时,将所有参试材料划分为3个类群。应用Mantel检测对SRAP和SCoT及两种标记合并进行相关性分析,表明三者之间具有显著的相关性,且相关性很高。聚类结果从分子水平反映出中国番木瓜主要栽培品种(系)的遗传基础狭窄。 相似文献
9.
Alireza Pour-Aboughadareh Jafar Ahmadi Ali Ashraf Mehrabi Alireza Etminan Mohammad Moghaddam 《Plant biosystems》2018,152(4):694-703
We assessed the molecular genetic diversity and relationships among some Aegilops and Triticum species using 15 start codon-targeted (SCoT) polymorphism markers. A total of 166 bands amplified, of which 164 (98.79%) were polymorphic. Analysis of molecular variance and inter-population differentiation (Gst) indicated high genetic variation within the studied populations. Our analyses revealed high genetic diversity in T. boeoticum, Ae. cylindrica, T. durum and Ae. umbellulata, low diversity in Ae. crassa, Ae. caudata and Ae. speltoides, and a close relationship among Ae. tauschii, T. aestivum, T. durum, T. urartu, and T. boeoticum. Cluster analysis indicated 180 individuals divided into 8 genome homogeneous clades and 11 sub-groups. T. aestivum and T. durum accessions were grouped together, and accessions with the C and U genomes were grouped into the same clade. Our results support the hypothesis that T. urartu and Ae. tauschii are two diploid ancestors of T. aestivum, and also that Ae. caudata and Ae. umbellulata are putative donors of C and U genomes for other Aegilops species that possess these genomes. Our results also revealed that the SCoT technique is informative and can be used to assess genetic relationships among wheat germplasm. 相似文献
10.
Fatemeh Pakseresht Reza Talebi Ezzat Karami 《Physiology and Molecular Biology of Plants》2013,19(4):563-574
Morphological traits and three molecular markers techniques: start codon targeted (SCoT), inter-simple sequence repeat (ISSR) and directly amplified minisatellite DNA (DAMD) markers were compared for fingerprinting of 40 landraces chickpea genotypes collected from different geographical locations of north-west of Iran. Variance analysis of ten measured morphological traits showed significant differences existed between genotypes. Cluster analysis based on morphological traits, divided genotypes in three distinct clusters. Average polymorphism information content (PIC) for ISSR, DAMD and SCoT markers was 0.216, 0.232 and 0.232, respectively, and this revealed that SCoT markers were more informative, followed by ISSRs marker, than other markers for the assessment of diversity amongst genotypes. Cluster analysis for three different molecular types revealed that genotypes taken for the analysis can be divided in three and four distinct clusters. Accessions from same geographical regions mostly showed more genetic similarities than those from origins far isolated apart. These results suggest that efficiency of SCOT, DAMD and ISSR markers was relatively the same in fingerprinting of genotypes but SCOT and DAMD analysis are more effective in fingerprinting of chickpea genotypes. To our knowledge, this is the first detailed report of a comparison of performance among two targeted DNA region molecular markers (SCoT and DAMD) and the ISSR technique on a set of samples of chickpea. Overall, our results indicate that SCOT, ISSR and DAMD fingerprinting could be used to detect polymorphism for genotypes of chickpea. 相似文献
11.
Avinash Kumar Vijay Rani Rajpal Ambika Rachayya Mallikarjun Devarumath Amita Kumari Rakesh Thakur Manju Chaudhary Pradeep Pratap Singh Shiv Murat Singh Chauhan Soom Nath Raina 《Physiology and Molecular Biology of Plants》2021,27(4):727
Picrorhiza kurroa is a medicinally important, high altitude perennial herb, endemic to the Himalayas. It possesses strong hepato-protective bioactivity that is contributed by two iridoid picroside compounds viz Picroside-I (P-I) and Picroside-II (P-II). Commercially, many P. kurroa based hepato-stimulatory Ayurvedic drug brands that use different proportions of P-I and P-II are available in the market. To identify genetically heterozygous and high yielding genotypes for multiplication, sustained use and conservation, it is essential to assess genetic and phytochemical diversity and understand the population structure of P. kurroa. In the present study, isolation and HPLC based quantification of picrosides P-I and P-II and molecular DNA fingerprinting using RAPD, AFLP and ISSR markers have been undertaken in 124 and 91 genotypes, respectively. The analyzed samples were collected from 10 natural P. kurroa Himalayan populations spread across four states (Jammu & Kashmir, Sikkim, Uttarakhand and Himachal Pradesh) of India. Genotypes used in this study covered around 1000 km geographical area of the total Indian Himalayan habitat range of P. kurroa. Significant quantitative variation ranging from 0.01 per cent to 4.15% for P-I, and from 0.01% to 3.18% in P-II picroside was observed in the analyzed samples. Three molecular DNA markers, RAPD (22 primers), ISSR (15 primers) and AFLP (07 primer combinations) also revealed a high level of genetic variation. The percentage polymorphism and effective number of alleles for RAPD, ISSR and AFLP analysis varied from 83.5%, 80.6% and 72.1%; 1.5722, 1.5787 and 1.5665, respectively. Further, the rate of gene flow (Nm) between populations was moderate for RAPD (0.8434), and AFLP (0.9882) and comparatively higher for ISSR (1.6093). Fst values were observed to be 0.56, 0.33, and 0.51 for RAPD, ISSR and AFLP markers, respectively. These values suggest that most of the observed genetic variation resided within populations. Neighbour joining (NJ), principal coordinate analysis (PCoA) and Bayesian based STRUCTURE grouped all the analyzed accessions into largely region-wise clusters and showed some inter-mixing between the populations, indicating the existence of distinct gene pools with limited gene flow/exchange. The present study has revealed a high level of genetic diversity in the analyzed populations. The analysis has resulted in identification of genetically diverse and high picrosides containing P. kurroa genotypes from Sainj, Dayara, Tungnath, Furkia, Parsuthach, Arampatri, Manvarsar, Kedarnath, Thangu and Temza in the Indian Himalayan region. The inferences generated in this study can be used to devise future resource management and conservation strategies in P. kurroa.Supplementary InformationThe online version contains supplementary material available at 10.1007/s12298-021-00972-w. 相似文献
12.
Haziz Sina Gado Dramane Philippe Tchekounou Mahoudo Fidèle Assogba Kamirou Chabi-Sika Bawa Boya Akim Socohou Adolphe Adjanohoun Lamine Baba-Moussa 《Saudi Journal of Biological Sciences》2021,28(2):1331-1335
Morinda citrifolia is a plant with broad nutraceutical and therapeutic effects and used in the traditional treatment of several ailments. The objective of this work is to investigate the phytochemistry of the fruit juice of M. citrifolia on one hand and on other hand to evaluate its antiradical and antibacterial activity. The phytochemical investigation was carried out by tube staining tests of the extract of two types of fruit juice of M. citrifolia. The antioxidant activity of these juices was evaluated by reducing the DPPH radical method. Concerning the antibacterial activity, it was tested on the in vitro growth of 10 reference bacterial strains using the well diffusion method. Qualitative phytochemistry of M. citrifolia fruit juices revealed the presence of large groups of secondary metabolites including polyphenols, reducing compounds, mucilage and terpernoids. The antioxidant activity of M. citrifolia fruit juices is dose-dependent and higher than that of ascorbic acid. Antimicrobial activity on other hand revealed that fruit juices inhibit growth inhibitory activity of Staphylococcus aureus, Pseudomonas aeruginosa, Proteus mirabilis, S. epidermidis, Proteus vulgaris, Streptococcus oralis, Enterococcus faecalis and Escherichia coli. This observed difference is significant for each juices on the strains (p < 0.001). These results support the use of M. citrifolia in traditional medicine and are the starting points for the development of a new drug to combat both dietary conditions and chronic conditions associated with oxidative stress. 相似文献
13.
14.
Analysis of diversity and relationships among mango cultivars using Start Codon Targeted (SCoT) markers 总被引：2，自引：0，他引：2
Cong Luo Xin-Hua He Hu Chen Shi-Jin Ou Mei-Ping Gao 《Biochemical Systematics and Ecology》2010,38(6):1176-1184
Genetic variation and relationships among 47 mango germplasm and 3 relative species from Guangxi province in China, were analyzed using Start Codon Targeted (SCoT) markers. Using 33 selected SCoT primers 273 bands were generated with an average of 8.27 bands per primer among the 50 accessions, of which 208 (76.19%) were polymorphic. Genetic relationships estimated using the SM similarity coefficient generated values between different pairs of accessions that varied from 0.531 to 0.923 with an average of 0.782. These coefficients were utilized to construct a dendrogram using the UPGMA. All 50 accessions were basically classified into six clusters and correspond well with their recorded pedigrees. The results will provide much more useful information for the management of germplasm and will also be useful to improve the current breeding strategies. The results also demonstrate that the SCoT marker system is useful for identification and genetic diversity analysis of mango cultivars. 相似文献
15.
应用SCoT和ISSR标记对36份龙眼资源和1份近缘种龙荔的遗传多样性进行分析。结果表明:12对SCoT引物共扩增出127条带,平均每条引物扩增10.58条带;15条ISSR引物共扩增出117个条带,平均扩增7.8条带。UPGMA聚类结果表明:SCoT标记和ISSR标记分别在相似系数0.672和0.685水平上,均可将37份材料分成6大类群,SCoT和ISSR标记均适用于龙眼材料的遗传多样性分析,如果将两种标记的数据进行综合分析,可以缩小单一标记的误差。研究结果为龙眼种质资源的保存和利用提供了重要的依据。 相似文献
16.
利用SCo T分子标记技术对来自9个国家或地区的46份菠萝种质进行了遗传多样性分析,并对SCo T标记在菠萝研究中的效率做了探讨。结果表明,SCo T标记在菠萝种质中具有丰富的多态性,引物多态性条带百分比在75%~100%之间,平均为94.61%;引物的有效等位基因数(Ne)、Nei's基因多样性指数(H)、Shannon's信息指数(I)和多态性信息含量(PIC)平均值分别为1.45、0.27、0.41和0.28,表明SCo T标记具有较高的多态性检测效率。基于SCo T标记计算获得的遗传相似系数对菠萝种质做聚类分析,46份菠萝种质可被划分为5个类群,其中,第Ⅰ类群所包含的菠萝种质数量最多,占菠萝种质总数的84.78%。主成分分析获得了与聚类分析不尽一致的结论,但两者反映的种质亲缘关系基本一致。本研究结果将为我国菠萝种质的鉴定、保存和科学利用提供一定的理论依据。 相似文献
17.
《Saudi Journal of Biological Sciences》2020,27(2):611-622
Recent trends in anticancer therapy is to use therapeutic agents which not only kill the cancer cell, but are less toxic to surrounding normal cells/tissue. One approach is to cut the nutrient supply to growing tumor cells, by blocking the formation of new blood vessels around the tumor. As the phytochemicals and botanical crude extracts have proven their efficacy as natural antiangiogenic agents with minimum toxicities, there is need to explore varieties of medicinal plants for novel antiangiogenic compounds.Rumex vesicarius L. (Humeidh), is an annual herbal plant with proven medicinal values. The antiangiogenic potential, and developmental toxicity of humeidh in experimental animal models has never been studied before. The crude extracts were prepared from the roots, stems, leaves and flowers of Rumex vesicarius L. in methanol, chloroform, ethyl acetate and n-hexane. The developmental toxicity screening in zebrafish embryos, has revealed that Rumex vesicarius was not toxic to zebrafish embryos. The chloroform stem extract showed significant level of antiangiogenic activity in zebrafish angiogenic assay on a dose dependent manner. Thirty five (35) bioactive compounds were identified by gas chromatography mass spectrophotometry (GC–MS) analysis in the stem extract of Rumex vesicarius. Propanoic acid, 2-[(trimethylsilyl)oxy]-, trimethylsilyl ester, Butane, 1,2,3-tris(trimethylsiloxy), and Butanedioic acid, bis(trimethylsilyl) ester were identified as major compound present in the stem of R. vasicarius.The anticancer activity of roots, stem, leaves and flowers crude extract was evaluated in human breast cancer (MCF7), human colon carcinoma (Lovo, and Caco-2), human hepatocellular carcinoma (HepG2) cell lines. Most of the crude extracts did not show significant level of cytotoxicity in tested cancer cells line, except, chloroform extract of stem which exhibited strong anticancer activity in all tested cancer cells with IC50 values in micro molar range.Based on these results, it is recommended that formulation prepared from R. vesicarius can further be tested in clinical trials in order to explore its therapeutic potential as an effective and safe natural anticancer product. 相似文献
18.
采用SCoT分子标记技术对8份罗汉松种质材料进行遗传多样性研究。结果表明,从80条引物中筛选出10条重复性好、条带清晰的引物进行PCR扩增,共产生136条带,其中多态性带122条(占88.97%),8个罗汉松种质间的遗传相似系数范围在0.39～0.80说明罗汉松的遗传多样性丰富。利用UPGMA进行系统的聚类分析显示,将8份罗汉松材料分为2大类;主成分分析结果与聚类分析结果相一致。可见,利用SCoT分子标记可有效的分析罗汉松种质资源的遗传多样性,为罗汉松种质亲缘关系的鉴别和分类提供理论依据。 相似文献
19.
Tehzeeb Zubairi Khajista Jabeen Sana Khalid Sumera Iqbal 《Saudi Journal of Biological Sciences》2021,28(12):6774-6781
Blue mold pathogen, isolated from infected Allium cepa L., was identified as a Penicillium species through morphological and molecular characterisation. Internal Transcribed spacer (ITS) region of ribosomal DNA (rDNA) was utilised for DNA sequencing. Basic Local Alignment Search Tool (BLAST) analysis has found the maximum similarity index of the fungus to be 82.39% with the Uncultured Penicillium clone (Accession: MF535522). So, the isolated Penicillium specie is the first reported specie of the genus that infects onion. A phylogenetic tree was constructed to establish a relationship of the isolated fungus with the most relevant species reported on GenBank. Extracts of Pennisetum flaccidum Griseb. were evaluated against the isolated fungus as a potential biocontrol agent. Among the five tested methanol concentrations (0.5%, 1%, 1.5%, 2% and 2.5%) of each plant part (root, inflorescence and foliage), 0.5% root extract showed maximum growth retardation, i.e. 89%. For bioassay-guided fractionation, the root extract was partitioned in n-hexane, chloroform, n-butanol and ethyl acetate. Ethyl acetate (1%) was proved to be the most potent one. Phytochemical screening has confirmed the occurrence of terpenoids, tannins, saponins and alkaloids. The applied molecular approach has deduced that the Penicillium specie collected from Pakistan might be novel. This study can be concluded that P. flaccidum contains potent phytochemicals which might be used as antifungal agent against Penicillium species. 相似文献
20.
《Saudi Journal of Biological Sciences》2017,24(4):760-766
Search for medicinal plants to treat kidney disorders is an important topic on phytotherapeutical research. Plumbago zeylanica L. is an important medicinal plant with hepatoprotective, anti-inflammatory, anti-diabetic, anti-cancer and anti-hyperlipidemic activities. In the present study, the protective effect of hydroalcoholic extract of P. zeylanica (HAPZ) in cisplatin induced nephrotoxicity was analyzed in Swiss albino mice. Treatment with higher dose (400 mg/kg) of HAPZ significantly reversed the adverse effect of cisplatin on kidney weight, serum urea and creatinine, indicating their renoprotective effect. The antioxidant effect of the drug is evident from its significant effect on Catalase, Glutathione peroxidase and lipid peroxidation activities. 相似文献