Discovery of as novel endophytes of in China and their alkaloid profiling.

The genus represents a significant group of above-ground endophytes extensively researched for their potential applications in agriculture and ecology. Additionally, species synthesize bioactive alkaloids, which generally cause health problems in livestock and have detrimental effects on the performance of insect herbivores. serves as a valuable forage grass for livestock owing to its high nutritional value and resilience in adverse environmental conditions.

Effect of Endophyte on the Growth and Carbon Allocation of Its Host Plant under Hemiparasitic Root Stress.

endophytes not only affect the growth and resistance of their host plants but also confer nutrient benefits to parasitized hosts. In this study, we used to parasitize , both with and without endophytic fungi, and to establish a parasitic system. In this study, endophytic fungal infection was found to increase the dry weight of the leaf, stem, and leaf sheath, as well as the plant height, root length, tiller number, aboveground biomass, and underground biomass of under root hemiparasitic stress.

Changes in bud bank and their correlation with plant community composition in degraded alpine meadows.

Bud banks are considered a crucial factor in regulating the species composition of grassland communities and maintaining the ecological function of alpine grasslands. However, few studies have paid attention to the dynamic changes of bud banks from undisturbed to severely degraded alpine meadows. Therefore, this study examined the correlations between plant diversity and bud bank traits at different stages of alpine meadows degradation.

Endophytic Fungi Regulate Expression and Ion Balance in under Alkaline Stress.

Plants cope with abiotic stress in several ways, including by collaborating with microorganisms. an endophytic fungus, has been shown to improve plant tolerance to extreme external environments. is a known salt-tolerant plant with the potential to improve alkaline lands.

Comparison of the effect of temperature and water potential on the seed germination of five populations from the Qinghai-Tibet plateau.

Temperature and water potentials are considered the most critical environmental factors in seed germinability and subsequent seedling establishment. The thermal and water requirements for germination are species-specific and vary with the environment in which seeds mature from the maternal plants. is a root hemiparasitic weed that grows extensively in the Qinghai-Tibet Plateau's degraded grasslands and has seriously harmed the grasslands ecosystem and its utilization.

First Report of Brown Leaf Spot of Caused by in Northwestern China.

is an important feed and forage resource in alpine region of northwestern China, and helps to maintain the ecological balance on Qinghai-Tibetan plateau (Fei et al. 2010). In September 2021, brown leaf spots were observed in Shandan Horse Farm (38.

Effects of removal on the nutrient stoichiometry of -dominated grasslands in the Qinghai-Tibetan plateau.

Background: Stoichiometric relations drive powerful constraints in several fundamental ecosystem processes. However, limited studies have been conducted on the ecological stoichiometry of plants after the change of community composition induced by removal in alpine grassland in the Qinghai-Tibetan Plateau.

Methods: We investigated the effects of removal on ecological stoichiometry by estimating the C:N:P stoichiometry in species, functional group and community levels of the ecosystem.

Does Epichloë Endophyte Enhance Host Tolerance to Root Hemiparasite?

Epichloë endophytes have been shown to be mutualistic symbionts of cool-season grasses under most environmental conditions. Although pairwise interactions between hemiparasites and their hosts are heavily affected by host-associated symbiotic microorganisms, little attention has been paid to the effects of microbe-plant interactions, particularly endophytic symbiosis, in studies examining the effects of parasitic plants on host performance. In this study, we performed a greenhouse experiment to examine the effects of hereditary Epichloë endophyte symbiosis on the growth of two host grasses (Stipa purpurea and Elymus tangutorum) in the presence or absence of a facultative root hemiparasite (Pedicularis kansuensis Maxim).

A toxic endophyte-infected grass helps reverse degradation and loss of biodiversity of over-grazed grasslands in northwest China.

Overgrazing of China's grasslands is increasingly causing biodiversity to decline. In degenerated grasslands of northwest China endophyte (Epichloё gansuensis) infected Achnatherum inebrians (drunken horse grass) is becoming widely distributed because of its toxicity to livestock. In this study, we investigated the ecological consequences of endophyte toxicity in this native grass, at three sites in northwest China, by comparing seed production of plant species and arthropod abundance in overgrazed grasslands with and without the presence of A.

[Phylogeny of Neotyphodium endophyte from western Chinese Elymus species based on act sequences].

Objective: We analyzed phylogenetic relationships between asexual endophytes isolated from western Chinese Elymus species.

Methods: Fifteen act sequences were cloned from asexual endophytes of the western Chinese Elymus species. The phylogenetic tree and network topology structure were constructed using act sequences obtained and Genbank.

Molecular Phylogeny of Grassland Caterpillars (Lepidoptera: Lymantriinae: Gynaephora) Endemic to the Qinghai-Tibetan Plateau.

Gynaephora (Lepidoptera Erebidae: Lymantriinae) is a small genus, consisting of 15 nominated species, of which eight species are endemic to the Qinghai-Tibetan Plateau (QTP). In this study, we employed both mitochondrial and nuclear loci to infer a molecular phylogeny for the eight QTP Gynaephora spp. We used the phylogeny to estimate divergence dates in a molecular dating analysis and to delimit species.