Plant species composition and vegetation cover of Kherlen Toono Mountain, Mongolia

Dariimaa, Shagdar; Yadamsuren, Oyunchuluun

doi:10.1016/j.japb.2016.06.005

Cited by 7 publications

(2 citation statements)

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“…Carex duriuscula C. A. Mey, is a perennial sedge widely distributed in arid and semiarid regions of northern China [38] that also occurs in Mongolia [39], Russia [40], Canada [41], and North America [42,43]. This species is particularly resistant to drought stress; it has dense roots, tillers strongly, grows rapidly, and tolerates soil nutrient deficiency and repeated harvesting, thus providing abundant wild forage in the vast northern parts of China.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism in Carex duriuscula

Hou

Wang

Luo³

et al. 2021

Plants

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Drought stress is a major environmental constraint for plant growth. Climate-change-driven increases in ambient temperatures resulted in reduced or unevenly distributed rainfalls, leading to increased soil drought. Carex duriuscula C. A. Mey is a typical drought-tolerant sedge, but few reports have examined the mechanisms conferring its tolerant traits. In the present study, the drought responses of C. duriuscula were assessed by quantifying activity of antioxidant enzymes in its leaf and root tissues and evaluating the relative contribution of organic and inorganic osmolyte in plant osmotic adjustment, linking it with the patterns of the ion acquisition by roots. Two levels of stress—mild (MD) and severe (SD) drought treatments—were used, followed by re-watering. Drought stress caused reduction in a relative water content and chlorophyll content of leaves; this was accompanied by an increase in the hydrogen peroxide (H2O2) and superoxide (O2−) contents in leaves and roots. Under MD stress, the activities of catalase (CAT), peroxidase (POD), and glutathione peroxidase (GPX) increased in leaves, whereas, in roots, only CAT and POD activities increased. SD stress led to an increase in the activities of CAT, POD, superoxide dismutase (SOD), and GPX in both tissues. The levels of proline, soluble sugars, and soluble proteins in the leaves also increased. Under both MD and SD stress conditions, C. duriuscula increased K+, Na+, and Cl− uptake by plant roots, which resulted in an increased K+, Na+, and Cl− concentrations in leaves and roots. This reliance on inorganic osmolytes enables a cost-efficient osmotic adjustment in C. duriuscula. Overall, this study revealed that C. duriuscula was able to survive arid environments due to an efficient operation of its ROS-scavenging systems and osmotic adjustment mechanisms.

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Section: Introductionmentioning

confidence: 99%

Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism in Carex duriuscula

Hou

Wang

Luo³

et al. 2021

Plants

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“…Tissue culture of Pulsatilla patens was initiated from seeds collected from naturally grown population by Priede and Klavina (2011) and the same methodological approach was chosen in the case of P. turczninovii. The habitats of Asiatic species such as P. turczaninovii, P. avescens or P. bungeana exist in North-Mongolian forest-steppe (Dulamsuren et al 2005a,b;Gantuya et al 2019;Gunin et al 2020) and Altai-Sayan mountain steppes (Namzalov et al 2018;Shadgar and Yadamsuren 2017). The habitat of P. turczaninovii was also ascertained in the alpine meadows in the mountainous area over 1000 m above sea level (Ermakow et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Propagation in Vitro and Experimental Field Cultivation ex Situ of Pulsatilla Turczaninovii Kryl. et Serg. (Ranunculaceae)

Hanus-Fajerska

Kocot

Koźmińska

et al. 2021

Preprint

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Pulsatilla turczaninovii is an important medicinal plant and a material also appreciated by gardeners for its high ornamental value. In this study we assessed the efficiency of reproduction under in vitro conditions of this important representative of the world flora. First, the germination percentage and the following plant development during three growing seasons were assessed, then we tested the possibilities of multiplication by in vitro culture methods. Our study provided new insight on biochemical background of generating adventitious roots in Pulsatilla considered difficult-to-rooting. The germination percentage of studied population reached about 55%. The highest multiplication coefficient of micro-rosettes in tissue culture, amounting to 5.17, was achieved using modified MS medium supplemented with 2.5 mg L-1 2iP and 1 mg L-1 IAA. We proved that in comparison with standard auxin-supplemented rooting medium, the treatment with addition of 1.0 mg L-1 ethylene precursor ACC elevated adventitious rooting by about 20%. The biochemical analyses revealed that total content of soluble sugars was the most impactful biomarker of adventitious rhizogenesis in studied species. Concentration of sugars was positively correlated with rooting efficiency, while the level of phenolic compounds was positively correlated with the root length and their number regenerated per single rosette.

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Biogeographical Characteristics of Mongolia

Tsogbadral

2021

The Physical Geography of Mongolia

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Plant species composition and vegetation cover of Kherlen Toono Mountain, Mongolia

Cited by 7 publications

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Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism in Carex duriuscula

Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism in Carex duriuscula

Propagation in Vitro and Experimental Field Cultivation ex Situ of Pulsatilla Turczaninovii Kryl. et Serg. (Ranunculaceae)

Biogeographical Characteristics of Mongolia

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