scholarly journals Assessment of genetic diversity in Amomum tsao-ko Crevost & Lemarié, an important medicine food homologous crop from Southwest China using SRAP and ISSR markers

2021 ◽  
Author(s):  
Mengli Ma ◽  
Tiantao Wang ◽  
Bingyue Lu
Keyword(s):  
Genetic Diversity ◽  
Southwest China ◽  
Issr Markers

Genetic Diversity Among Saudi Peganum harmala and Rhazya stricta Populations Using Chemical and ISSR Markers

2019 ◽  
Vol 20 (13) ◽  
pp. 1134-1146
Author(s):  
Magda E. Abd-Elgawad ◽  
Modhi O. Alotaibi
Keyword(s):  
Genetic Diversity ◽  
Folk Medicine ◽  
Issr Markers ◽  
Wild Plants ◽  
Gas Chromatography Mass Spectrometry ◽  
Group Method ◽  
Peganum Harmala ◽  
Molecular Polymorphism ◽  
Arithmetic Average ◽  
Rhazya Stricta

Background:The vernacular name 'Harmal' is used for two plant species in Saudi Arabia, i.e. Peganum harmala L. and Rhazya stricta Decne. Both are important medicinal plants which offer interesting pharmacological properties.Objective:This study aimed to evaluate the genetic diversity among different populations of harmal based on chemical variations of alkaloids and molecular polymorphism.Methods:Total alkaloids were extracted from plants of three populations of each species and estimated by using spectrophotometer and the chemical compounds were analyzed by Gas chromatography mass spectrometry (GC-MS). Molecular polymorphism was estimated by using the Inter Simple Sequence Repeat (ISSR) fingerprints.Results:The results showed that the alkaloids content of R. stricta was higher than P. harmala populations. The GC-MS analysis revealed the presence of (65-53) compounds in R. stricta and P. harmala, and the percentage of polymorphism was found to be 93.2%. Sixteen ISSR primers produced 170 scorable bands with an average of 9.6 bands per primer and 75%-100% polymorphism. The cluster analysis using the unweighted pair-group method of the arithmetic average (UPGMA) method based on combined data of GC-MS and ISSR markers divided the six harmal genotypes into two major groups.Conclusion:The existence of variations in chemical and genetic markers is useful for the selection of potential genotypes for medicinal use, and for breeding lines for medicinal substances production to spare wild plants from uncontrolled harvesting for folk medicine.

Assessment of genetic variability amongst cultivated populations of Khasi mandarin (Citrus reticulata Blanco) detected by ISSR

2021 ◽  
pp. 1-11
Author(s):  
Karishma Kashyap ◽  
Rasika M. Bhagwat ◽  
Sofia Banu
Keyword(s):  
Genetic Diversity ◽  
Genetic Variability ◽  
Inter Simple Sequence Repeat ◽  
Northeast India ◽  
Issr Markers ◽  
Citrus Reticulata ◽  
Brahmaputra Valley ◽  
Indian Food ◽  
Cultivated Populations ◽  
High Level

Abstract Khasi mandarin (Citrus reticulata Blanco) is a commercial mandarin variety grown in northeast India and one of the 175 Indian food items included in the global first food atlas. The cultivated plantations of Khasi mandarin grown prominently in the lower Brahmaputra valley of Assam, northeast India, have been genetically eroded. The lack in the efforts for conservation of genetic variability in this mandarin variety prompted diversity analysis of Khasi mandarin germplasm across the region. Thus, the study aimed to investigate genetic diversity and partitioning of the genetic variations within and among 92 populations of Khasi mandarin collected from 10 cultivated sites in Kamrup and Kamrup (M) districts of Assam, India, using Inter-Simple Sequence Repeat (ISSR) markers. The amplification of genomic DNA with 17 ISSR primers yielded 216 scorable DNA amplicons of which 177 (81.94%) were polymorphic. The average polymorphism information content was 0.39 per primer. The total genetic diversity (HT = 0.28 ± 0.03) was close to the diversity within the population (HS = 0.20 ± 0.01). A high mean coefficient of gene differentiation (GST = 0.29) reflected a high level of gene flow (Nm = 1.22), indicating high genetic differentiation among the populations. Analysis of Molecular Variance (AMOVA) showed 78% of intra-population differentiation, 21% among the population and 1% among the districts. The obtained results indicate the existence of a high level of genetic diversity in the cultivated Khasi mandarin populations, indicating the need for preservation of each existing population to revive the dying out orchards in northeast India.

scholarly journals Molecular analysis of genetic diversity in population of Silybum marianum (L.) Gaertn in Egypt

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Marwa Hamouda
Keyword(s):  
Genetic Diversity ◽  
Electrophoretic Pattern ◽  
Issr Markers ◽  
Silybum Marianum ◽  
Inter Simple Sequence Repeats ◽  
Sds Page ◽  
Dna Pattern ◽  
Pharmaceutical Properties ◽  
High Level ◽  
Rapd And Issr

Abstract Background Silybum marianum L. Gaertn is a medicinal plant of unique pharmaceutical properties in the treatment of liver disorders and diabetic nephropathy. Biochemical (SDS-PAGE) and molecular markers such as randomly amplified polymorphic DNA (RAPD) and inter-simple sequence repeats (ISSR) technologies were used in this work to detect genetic diversity of 14 collections of Silybum marianum population in Egypt. Results The electrophoretic pattern of seed protein gave different molecular weight bands, ranging from 24 to 111 KDa with the presence of unique bands. RAPD results revealed a high level of polymorphism (73.2%) using 12 RAPD primers, but only eight of them gave reproducible polymorphic DNA pattern. Sixteen primers were used in the ISSR method; only ten of them yielded clearly identifiable bands. The percentage of polymorphism is about 80% of the studied samples. Conclusion The obtained data confirmed that SDS-protein, RAPD, and ISSR markers are important tools for genetic analysis for Silybum marianum and recommended to give accurate results.

scholarly journals Efficiency of improved RAPD and ISSR markers in assessing genetic diversity and relationships in Angelica sinensis (Oliv.) Diels varieties of China

2015 ◽  
Vol 18 (2) ◽  
pp. 96-102 ◽  
Author(s):  
Zhiqiang Mei ◽  
Chun Zhang ◽  
Md. Asaduzzaman Khan ◽  
Ye Zhu ◽  
Mousumi Tania ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Issr Markers ◽  
Angelica Sinensis ◽  
Rapd And Issr

scholarly journals Genetic diversity and population structure of rice stripe virus in China

2009 ◽  
Vol 90 (4) ◽  
pp. 1025-1034 ◽  
Author(s):  
Tai-Yun Wei ◽  
Jin-Guang Yang ◽  
Fu-Long Liao ◽  
Fang-Luan Gao ◽  
Lian-Ming Lu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Yunnan Province ◽  
Southwest China ◽  
Eastern China ◽  
Rice Stripe Virus ◽  
Genetic Distances ◽  
Geographical Regions ◽  
Strong Negative Selection ◽  
Recent Outbreak

Rice stripe virus (RSV) is one of the most economically important pathogens of rice and is repeatedly epidemic in China, Japan and Korea. The most recent outbreak of RSV in eastern China in 2000 caused significant losses and raised serious concerns. In this paper, we provide a genotyping profile of RSV field isolates and describe the population structure of RSV in China, based on the nucleotide sequences of isolates collected from different geographical regions during 1997–2004. RSV isolates could be divided into two or three subtypes, depending on which gene was analysed. The genetic distances between subtypes range from 0.050 to 0.067. The population from eastern China is composed only of subtype I/IB isolates. In contrast, the population from Yunnan province (southwest China) is composed mainly of subtype II isolates, but also contains a small proportion of subtype I/IB isolates and subtype IA isolates. However, subpopulations collected from different districts in eastern China or Yunnan province are not genetically differentiated and show frequent gene flow. RSV genes were found to be under strong negative selection. Our data suggest that the most recent outbreak of RSV in eastern China was not due to the invasion of new RSV subtype(s). The evolutionary processes contributing to the observed genetic diversity and population structure are discussed.

Genetic diversity and population structure of the mangrove lime (Merope angulata) in India revealed by AFLP and ISSR markers

2015 ◽  
Vol 120 ◽  
pp. 260-267 ◽  
Author(s):  
Satya Narayan Jena ◽  
Sushma Verma ◽  
Kuttan Narayanan Nair ◽  
Awadhesh Kumar Srivastava ◽  
Sujata Misra ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Issr Markers

Genetic diversity of natural Miscanthus sinensis populations in China revealed by ISSR markers

2013 ◽  
Vol 48 ◽  
pp. 248-256 ◽  
Author(s):  
Qi Xiang Zhang ◽  
Yi Ke Shen ◽  
Ruo Xuan Shao ◽  
Jia Fang ◽  
Yong Qing He ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Issr Markers ◽  
Miscanthus Sinensis

Genetic Diversity in Tomato Varieties Assessed by ISSR Markers

2017 ◽  
Vol 24 (4) ◽  
pp. 353-360 ◽  
Author(s):  
Ghaffar Kiani ◽  
Mohammad Siahchehreh
Keyword(s):  
Genetic Diversity ◽  
Issr Markers
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