Effects of endophytic fungi on the secondary metabolites of Hordeum bogdanii under alkaline stress

Han, Dan; Wang, Kai; Long, Feng; Zhang, Wangbin; Xiang, Yanqiao; Chen, Shuihong

doi:10.1186/s13568-022-01414-w

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…Fungi constitute one of the most diverse groups of eukaryotic organisms [1-3], and play numerous ecological roles [4][5][6]. Among several fungal lifestyles, endophytic behavior stands out due to a series of benefits to the host plants [7][8][9][10][11]. Unlike the soil dwelling saprophytic species, endophytic fungi reside inside plant tissues, growing within roots, trunks and leaves without causing an apparent disease [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

How Deep Can the Endophytic Mycobiome Go? A Case Study on Six Woody Species from the Brazilian Cerrado

Reis

Pappas

Lorenzi

et al. 2023

JoF

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Elucidating the complex relationship between plants and endophytic fungi is very important in order to understand the maintenance of biodiversity, equity, stability, and ecosystem functioning. However, knowledge about the diversity of endophytic fungi from species of the native Brazilian Cerrado biome is poorly documented and remains largely unknown. These gaps led us to characterize the diversity of Cerrado endophytic foliar fungi associated with six woody species (Caryocar brasiliense, Dalbergia miscolobium, Leptolobium dasycarpum, Qualea parviflora, Ouratea hexasperma, and Styrax ferrugineus). Additionally, we investigated the influence of host plant identities on the structure of fungal communities. Culture-dependent methods coupled with DNA metabarcoding were employed. Irrespective of the approach, the phylum Ascomycota and the classes Dothideomycetes and Sordariomycetes were dominant. Using the cultivation-dependent method, 114 isolates were recovered from all the host species and classified into more than 20 genera and 50 species. Over 50 of the isolates belonged to the genus Diaporthe, and were distributed into more than 20 species. Metabarcoding revealed the phyla Chytridiomycota, Glomeromycota, Monoblepharomycota, Mortierellomycota, Olpidiomycota, Rozellomycota, and Zoopagomycota. These groups are reported for the first time as components of the endophytic mycobiome of Cerrado plant species. In total, 400 genera were found in all host species. A unique leaf endophytic mycobiome was identified in each host species, which differed not only by the distribution of fungal species, but also by the abundance of shared species. These findings highlight the importance of the Brazilian Cerrado as a reservoir of microbial species, and emphasize how endophytic fungal communities are diversified and adapted.

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Section: Introductionmentioning

confidence: 99%

How Deep Can the Endophytic Mycobiome Go? A Case Study on Six Woody Species from the Brazilian Cerrado

Reis

Pappas

Lorenzi

et al. 2023

JoF

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Section: Introductionmentioning

confidence: 99%

“…Most scholars working on screening and evaluating plant alkaline tolerance have focused on growth and development status, microstructure, photosynthetic pigments, photosystems, ion uptake and transport characteristics, and fluorescence parameters 4 . Current studies on the effects of alkaline stress on plants have focused on cash crops such as Hordeum bogdanii, Oryza sativa L. and Beta vulgaris L. [5][6][7] , with fewer studies on forest trees.Willow (Salix babylonica) is a woody plant of the Salicaceae family distributed in the north temperate zone 8 . Due to its attractive crown shape and green foliage, willow has excellent characteristics, such as fast sprouting, flood resistance, and salinity tolerance.…”

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confidence: 99%

Responses of growth and photosynthesis to alkaline stress in three willow species

Qiao,

Ma,

et al. 2024

Sci Rep

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Investigating differences in resistance to alkaline stress among three willow species can provide a theoretical basis for planting willow in saline soils. Therefore we tested three willow species (Salix matsudana, Salix gordejevii and Salix linearistipularis), already known for their high stress tolerance, to alkaline stress environment at different pH values under hydroponics. Root and leaf dry weight, root water content, leaf water content, chlorophyll content, photosynthesis and chlorophyll fluorescence of three willow cuttings were monitored six times over 15 days under alkaline stress. With the increase in alkaline stress, the water retention capacity of leaves of the three species of willow cuttings was as follows: S. matsudana > S. gordejevii > S. linearistipularis and the water retention capacity of the root system was as follows: S. gordejevii > S. linearistipularis > S. matsudana. The chlorophyll content was significantly reduced, damage symptoms were apparent. The net photosynthetic rate (Pn), rate of transpiration (E), and stomatal conductance (Gs) of the leaves showed a general trend of decreasing, and the intercellular CO2 concentration (Ci) of S. matsudana and S. gordejevii first declined and then tended to level off, while the intercellular CO2 concentration of S. linearistipularis first declined and then increased. The quantum yield and energy allocation ratio of the leaf photosystem II (PSII) reaction centre changed significantly (φPo, Ψo and φEo were obviously suppressed and φDo was promoted). The photosystem II (PSII) reaction centre quantum performance index and driving force showed a clear downwards trend. Based on the results it can be concluded that alkaline stress tolerance of three willow was as follows: S. matsudana > S. gordejevii > S. linearistipularis. However, since the experiment was done on young seedlings, further study at saplings stage is required to revalidate the results.

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“…Notably, the co-fermentation of the endophytic fungus Ilyonectria cyclaminicola with the residue of Epimedii folium during the fermentation process enhances the content of total flavonoids and flavonols in the fermentation broth (Guo et al, 2023). Under alkaline stress, endophytic fungi promote the production of secondary metabolites such as phosphorus, polyphenols, and alkaloids in Hordeum bogdanii, thus enhancing its alkaline tolerance (Han et al, 2022). In other words, endophytic fungi play a crucial role in helping plants endure adversities by stimulating the production of host metabolites.…”

mentioning

confidence: 99%

The diversity of endophytic fungi in Tartary buckwheat (Fagopyrum tataricum) and its correlation with flavonoids and phenotypic traits

Chen,

Ding,

Zhou

et al. 2024

Front. Microbiol.

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Tartary buckwheat (Fagopyrum tataricum) is a significant medicinal crop, with flavonoids serving as a crucial measure of its quality. Presently, the artificial cultivation of Tartary buckwheat yields low results, and the quality varies across different origins. Therefore, it is imperative to identify an effective method to enhance the yield and quality of buckwheat. Endophytic fungi reside within plants and form a mutually beneficial symbiotic relationship, aiding plants in nutrient absorption, promoting host growth, and improving secondary metabolites akin to the host. In this study, high-throughput sequencing technology was employed to assess the diversity of endophytic fungi in Tartary buckwheat. Subsequently, a correlation analysis was performed between fungi and metabolites, revealing potential increases in flavonoid content due to endophytic fungi such as Bipolaris, Hymenula, and Colletotrichum. Additionally, a correlation analysis between fungi and phenotypic traits unveiled the potential influence of endophytic fungi such as Bipolaris, Buckleyzyma, and Trichosporon on the phenotypic traits of Tartary buckwheat. Notably, the endophytic fungi of the Bipolaris genus exhibited the potential to elevate the content of Tartary buckwheat metabolites and enhance crop growth. Consequently, this study successfully identified the resources of endophytic fungi in Tartary buckwheat, explored potential functional endophytic fungi, and laid a scientific foundation for future implementation of biological fertilizers in improving the quality and growth of Tartary buckwheat.

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Effects of endophytic fungi on the secondary metabolites of Hordeum bogdanii under alkaline stress

Cited by 7 publications

References 27 publications

How Deep Can the Endophytic Mycobiome Go? A Case Study on Six Woody Species from the Brazilian Cerrado

How Deep Can the Endophytic Mycobiome Go? A Case Study on Six Woody Species from the Brazilian Cerrado

Responses of growth and photosynthesis to alkaline stress in three willow species

The diversity of endophytic fungi in Tartary buckwheat (Fagopyrum tataricum) and its correlation with flavonoids and phenotypic traits

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