[assessment on vegetation restoration capacity of several grassland ecosystems under destroyed disturbance in permafrost regions of qinghai-tibet plateau].vegetation restoration capacity of disturbed grassland ecosystem is one of the important components in assessing the influence of human engineering activities on the grassland ecosystems in permafrost region of qinghai-tibet plateau. after comparing the features of vegetation communities, plant species diversity, grassland primary productivity, and economic group between disturbed and undisturbed communities, the comprehensive vegetation restoration capacity of several grassland communities unde ...200819123353
herbivory and competition of tibetan steppe vegetation in winter pasture: effects of livestock exclosure and plateau pika reduction.rangeland degradation has been identified as a serious concern in alpine regions of western china on the qinghai-tibetan plateau (qtp). numerous government-sponsored programs have been initiated, including many that feature long-term grazing prohibitions and some that call for eliminating pastoralism altogether. as well, government programs have long favored eliminating plateau pikas (ochotona curzoniae), assumed to contribute to degraded conditions. however, vegetation on the qtp evolved in the ...201526208005
microsatellite primers in stipa purpurea (poaceae), a dominant species of the steppe on the qinghai-tibetan plateau.•premise of the study: microsatellite markers were developed in stipa purpurea, a dominant species of the steppe and meadow on the qinghai-tibetan plateau. •methods and results: using the combined biotin capture method, 15 microsatellite primer sets were isolated and characterized. eleven of these markers showed polymorphism, and the number of alleles per locus ranged from two to seven across 96 individuals from four populations. •conclusions: these markers provide a useful tool to investigate t ...201121613069
[relationships between belowground biomass of alpine grassland and environmental factors along an altitude gradient].taking bayanbulak alpine grassland on the southern slope of tianshan mountain, xin-jiang as test object, the relationships between belowground biomass and environmental factors along an altitude gradient were analyzed. the results showed that with increasing altitude, the below-ground biomass of alpine steppe dominated by stipa purpurea and festuca ovina, alpine steppe meadow dominated by kobresia capillifolia and s. purpurea, and alpine meadow dominated by carex stenocarpa, alchemilla tianschan ...200819238833
[relationships between aboveground biomass and environmental factors along an altitude gradient of alpine grassland].in order to analyze the relationships between aboveground biomass and environmental factors along an altitude gradient of bayanbulak alpine grassland on the southern slope of tianshan mountain, nine plots were selected, with each at 100 m interval of altitude. the results showed that stipa purpurea and festuca ovina communities distributed at the altitude from 2460 to 2760 m, and the aboveground biomass were 52.2-75.9 g x m(-2). kobresia capillifolia + s. purpurea communities distributed at alti ...200718062306
molecular cloning and characterization of a novel sk3-type dehydrin gene from stipa purpurea.stipa purpurea, an endemic forage of the grass family in the tibetan plateau, is highly resistant to drought. dehydrins (dhns) are stress proteins involved in plant protective reactions against environmental stress. in this study, the full-length dhn open reading frame (orf) cloned from s. purpurea, named spdhn1, was 816 nucleotides length and encoded a protein of 271 amino acids. phylogenetic and sequence characterization analysis revealed that the dhn gene was an sk3-type dhns. subcellular loc ...201424755076
expression of stipa purpurea spcipk26 in arabidopsis thaliana enhances salt and drought tolerance and regulates abscisic acid signaling.stipa purpurea (s. purpurea) is the dominant plant species in the alpine steppe of the qinghai-tibet plateau, china. it is highly resistant to cold and drought conditions. however, the underlying mechanisms regulating the stress tolerance are unknown. in this study, a cipk gene from s. purpurea (spcipk26) was isolated. the spcipk26 coding region consisted of 1392 bp that encoded 464 amino acids. the protein has a highly conserved catalytic structure and regulatory domain. the expression of spcip ...201627338368
overexpression of spcbl6, a calcineurin b-like protein of stipa purpurea, enhanced cold tolerance and reduced drought tolerance in transgenic arabidopsis.the purpose of the present study was to characterize spcbl6 (genbank accession number: kt780442) from stipa purpurea and elucidate the function of this protein in abiotic stress. the full-length cdna of spcbl6 was isolated from s. purpurea by rapid amplification of cdna ends methods. laser confocal microscopy was used to analyze the subcellular localization of spcbl6. the constructs of 35s:gfp-spcbl6 was used to transform wild-type (wt) arabidopsis plants (ecotype columbia-0) with the floral dip ...201627393148
a novel ap2/erf transcription factor from stipa purpurea leads to enhanced drought tolerance in arabidopsis thaliana.sperf1 acts as a positive regulator, contributing to drought stress tolerance in a. thaliana through activating dre/crt elements in the promoters of abiotic stress-responsive genes. stipa purpurea is an endemic perennial grass species in alpine arid and semi-arid meadows on the qinghai-xizang plateau, which is highly tolerant against drought and cold. erf transcription factors are known to regulate gene expression under abiotic and biotic treatments. herein, we isolated a full-length erf gene cd ...201627443644
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