Isozyme variability among<i>Elymus</i>species indigenous to the Tibetan and Inner Mongolian Plateaus

Yan, Xuebing; Guo, Yuxia; He, Zhenli; Wang, Kun

doi:10.1111/j.1744-697x.2007.00078.x

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…These results suggest that few gene markers are available in sesame and related wild species. A comparable pattern of isozyme variation was also reported in other plant species such as Elymus (Yan et al, 2000), Phalaris (Matus and Hucl, 1999) and Trifolium (Lange and Schifino-Wittmann, 2000) in terms of number of bands and staining intensities. Although cultivated sesame is self-pollinated, up to 60% levels of out-crossing has been reported (Yermanos, 1980).…”

Section: Isozyme Variationsupporting

confidence: 81%

Genetic relationship between sesame (Sesamum indicum L.) and related wild species based on chromosome counts and isozyme markers

Nyongesa¹,

Were²,

Gudu³

et al. 2014

Afr. J. Agric. Res.

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Sesame is an orphan crop with little research attention in Kenya. Genetic relationship between cultivated sesame and related wild species in Kenya is not well known. The objective of this study was to determine genetic relationship between traditional landraces of sesame and related wild species using somatic chromosome counts and isozyme markers. Somatic chromosome counts of four wild species revealed a consistent chromosome number of 2n = 32, which differed from that of the cultivated sesame (2n = 26), indicating genetic variation in chromosome counts. Only esterase exhibited significant variation and accession-specific esterase bands were identified. Three cathodic and eight anodic bands were observed and the variable bands ranged from 2 to 6 per accession. Cathodic bands with varied relative migration were observed in wild species only, whereas anodic bands were observed for all the accessions. Accessions of cultivated sesame were more genetically diverse compared to wild species. Morogoro, 107UG, Indian-1 and Indian-2 recorded the highest number of esterase bands, while 103w had the lowest number of bands. Few common bands were found between cultivated sesame and related wild species indicating a distant genetic relationship. Few gene markers are available in sesame and related wild species, therefore, esterase isozymes can contribute to studies in the breeding and genetics of sesame.

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Section: Isozyme Variationsupporting

confidence: 81%

Genetic relationship between sesame (Sesamum indicum L.) and related wild species based on chromosome counts and isozyme markers

Nyongesa¹,

Were²,

Gudu³

et al. 2014

Afr. J. Agric. Res.

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“…Its common name is tall wheatgrass. Elymus grows in abundant plant-colonizing meadows, areas alongside river banks, and mountainsides—especially at high altitudes ranging from 1000 to 4000 m, on the Qinghai-Tibetan plateau in western and northern China [25,26,27], regions of the Tibetan plateau, and interior Mongolian plateau [28]. This species grows in the moderate, subtropical, and sub-Alp climates on acidic, salinated, and alkaline soils, and is highly resistant to diseases and to biotic and abiotic stress.…”

Section: Introductionmentioning

confidence: 99%

“…This species grows in the moderate, subtropical, and sub-Alp climates on acidic, salinated, and alkaline soils, and is highly resistant to diseases and to biotic and abiotic stress. Interestingly, it is closely related with a few important cereal species, like wheat, barley, and rye [27,28]. Its dry matter yield ranges from 13 to 25 Mg ha −1 [29].…”

Section: Introductionmentioning

confidence: 99%

Implications of Soil Pollution with Diesel Oil and BP Petroleum with ACTIVE Technology for Soil Health

Borowik

Wyszkowska

Kucharski

et al. 2019

IJERPH

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Grass Elymus elongatus has a potential in phytoremediation and was used in this study in a potted experiment, which was performed to determine the effect of polluting soil (Eutric Cambisol) with diesel oil (DO) and unleaded petroleum (P) on the diversity of soil microorganisms, activity of soil enzymes, physicochemical properties of soil, and on the resistance of Elymus elongatus to DO and P, which altogether allowed evaluating soil health. Both petroleum products were administered in doses of 0 and 7 cm3 kg−1 soil d.m. Vegetation of Elymus elongatus spanned for 105 days. Grasses were harvested three times, i.e., on day 45, 75, and 105 of the experiment. The study results demonstrated a stronger toxic effect of DO than of P on the growth and development of Elymus elongatus. Diesel oil caused greater changes in soil microbiome compared to unleaded petroleum. This hypothesis was additionally confirmed by Shannon and Simpson indices computed based on operational taxonomic unit (OTU) abundance, whose values were the lowest in the DO-polluted soil. Soil pollution with DO reduced the counts of all bacterial taxa and stimulated the activity of soil enzymes, whereas soil pollution with P diminished the diversity of bacteria only at the phylum, class, order, and family levels, but significantly suppressed the enzymatic activity. More polycyclic aromatic hydrocarbons (PAHs) were degraded in the soil polluted with P compared to DO, which may be attributed to the stimulating effect of Elymus elongatus on this process, as it grew better in the soil polluted with P than in that polluted with DO.

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“…The two Elymus species have been widely used as forage crops in cultivated pastures and natural grassland due to their good forage quality, tolerance to diverse environmental conditions as well as important ecological functions in vegetation restoration, soil stabilization, and erosion control [ 6 , 7 ]. Moreover, Elymus species are closely related to several important cereal crops such as wheat, barley, and rye, and may serve as potential genetic resource for the improvement of these crops [ 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…The Qinghai-Tibetan Plateau is famous for its high elevation, low temperatures, and oxygen concentration where various Elymus species are widely distributed. In contrast, the Mongolian Plateau exhibits a dry and windy climate, and also contains a high diversity of Elymus species [ 10 ]. As a consequence, a comprehensive analysis of the phenotypic and genetic diversity of Elymus germplasm, indigenous to the Qinghai-Tibetan Plateau and Mongolian Plateau, may be important not only for the identification and development of Elymus germplasm with economically valuable traits, but also for the conservation and utilization of Elymus species.…”

Section: Introductionmentioning

confidence: 99%

Phenotype- and SSR-Based Estimates of Genetic Variation between and within Two Important Elymus Species in Western and Northern China

Zhang

Xie

Zhang

et al. 2018

Genes

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Elymus nutans and Elymus sibiricus are two important perennial forage grasses of the genus Elymus, widely distributed in high altitude regions of Western and Northern China, especially on the Qinghai-Tibetan Plateau. Information on phenotypic and genetic diversity is limited, but necessary for Elymus germplasm collection, conservation, and utilization. In the present study, the phenotypic and genetic differentiation of 73 accessions of the two species were evaluated using 15 phenotypic traits and 40 expressed sequence tag derived simple sequence repeat markers (EST-SSRs). The results showed that only 7.23% phenotypic differentiation (Pst) existed between the two Elymus species based on fifteen quantitative traits. Principal component analysis (PCA) revealed that leaf traits, spike traits, and some seed traits were dominant factors in phenotypic variation. Moreover, 396 (97.8%) and 331 (87.1%) polymorphic bands were generated from 40 EST-SSR primers, suggesting high levels of genetic diversity for the two species. The highest genetic diversity was found in the Northeastern Qinghai-Tibetan Plateau groups. Clustering analysis based on molecular data showed that most accessions of each Elymus species tended to group together. Similar results were described by principal coordinates analysis (PCoA) and structure analysis. The molecular variance analysis (AMOVA) revealed that 81.47% and 89.32% variation existed within the geographical groups for the two species, respectively. Pearson’s correlation analyses showed a strong positive correlation between Nei’s genetic diversity and annual mean temperature. These results could facilitate Elymus germplasm collection, conservation, and future breeding.

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Isozyme variability amongElymusspecies indigenous to the Tibetan and Inner Mongolian Plateaus

Cited by 7 publications

References 20 publications

Genetic relationship between sesame (Sesamum indicum L.) and related wild species based on chromosome counts and isozyme markers

Genetic relationship between sesame (Sesamum indicum L.) and related wild species based on chromosome counts and isozyme markers

Implications of Soil Pollution with Diesel Oil and BP Petroleum with ACTIVE Technology for Soil Health

Phenotype- and SSR-Based Estimates of Genetic Variation between and within Two Important Elymus Species in Western and Northern China

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