Endophytic Fungi Assures Tropical Forage Grass Growth by Water Stress Tolerances

Azevedo, Raphael Passaglia; Alves, Natálie Martins; Costa, Ingrid Araújo; Domingues, Mariany Isabela Soares; Bandória, Natália de Aguiar; Figueiredo, Ulisses José de; Medeiros, Flávio Henrique Vasconcelos de; Silva, Bruno Montoani; Cardoso, Patrícia Gomes

doi:10.1007/s00284-021-02672-w

Cited by 3 publications

(3 citation statements)

References 40 publications

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“…Mrakia, present only in spring as the secondary dominant strain, likely aids the plant in resisting low temperatures through the production of cold-active enzymes and secondary metabolites. Has a wide range of hosts [37]; enhances plant drought resistance [86]; produces sesquiterpenoid compounds [87]; possesses biocontrol properties [88]; synthesizes titanium dioxide nanoparticles to reduce antibiotic use and lower the risk of antimicrobial resistance [89]. Produces antimicrobial multicopper compounds [91]; generates nitrogen metabolites, steroids, terpenes, pyrones, quinones, and phenolic compounds [92]; promotes growth [93]; produces substances with antimicrobial activity [13].…”

Section: Rhodococcusmentioning

confidence: 99%

Diversity of Endophytes of Actinidia arguta in Different Seasons

Liu,

Lu,

et al. 2024

Life

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The seasonal changes in environmental conditions can alter the growth states of host plants, thereby affecting the living environment of endophytes and forming different endophytic communities. This study employs Illumina MiSeq next-generation sequencing to analyze the 16SrRNA and ITS rDNA of endophytes in 24 samples of Actinidia arguta stem tissues across different seasons. The results revealed a high richness and diversity of endophytes in Actinidia arguta, with significant seasonal variations in microbial community richness. This study identified 897 genera across 36 phyla for bacteria and 251 genera across 8 phyla for fungi. Notably, 69 bacterial genera and 19 fungal genera significantly contributed to the differences in community structure across seasons. A distinctive feature of coexistence in the endophytic community, both specific and conservative across different seasons, was observed. The bacterial community in winter demonstrated significantly higher richness and diversity compared to the other seasons. Environmental factors likely influence the optimal timing for endophyte colonization. Solar radiation, temperature, precipitation, and relative humidity significantly impact the diversity of endophytic bacteria and fungi. In addition, seasonal variations show significant differences in the nutritional modes of fungal endophytes and the degradation, ligninolysis, and ureolysis functions of bacterial endophytes. This study elucidates the potential role of endophytes in assisting Actinidia arguta in adapting to seasonal changes and provides a theoretical basis for further exploration of functional microbial strains.

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Section: Rhodococcusmentioning

confidence: 99%

Diversity of Endophytes of Actinidia arguta in Different Seasons

Liu,

Lu,

et al. 2024

Life

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“…6 For instance, Paraconiothyrium estuar-inum, an endophytic fungus associated with Brachiaria brizantha, has been found to elevate drought tolerance and sustainable growth ability of host plants. 7 Endophytic fungi can resist biotic stressors by secreting metabolites such as antibiotics and activating plant defenses.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Many endophytic fungi are thought to confer some benefit to the host, including enhancing the host plant’s growth and improving the plant’s adaptability and microbiome diversity . For instance, Paraconiothyrium estuarinum, an endophytic fungus associated with Brachiaria brizantha, has been found to elevate drought tolerance and sustainable growth ability of host plants . Endophytic fungi can resist biotic stressors by secreting metabolites such as antibiotics and activating plant defenses.…”

Section: Introductionmentioning

confidence: 99%

Multiomics Reveals Mechanisms of Alternaria oxytropis Inhibiting Pathogenic Fungi in Oxytropis ochrocephala

Fu,

Schardl,

Cook

et al. 2024

J. Agric. Food Chem.

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Endophytic fungi can benefit the host plant and increase the plant resistance. Now, there is no in-depth study of how Alternaria oxytropis (A. oxytropis) is enhancing the ability of inhibiting pathogenic fungi in Oxytropis ochrocephala (O. ochrocephala). In this study, the fungal community and metabolites associated with endophyte-infected (EI) and endophyte-free (EF) O. ochrocephala were compared by multiomics. The fungal community indicated that there was more A. oxytropis, less phylum Ascomycota, and less genera Leptosphaeria, Colletotrichum, and Comoclathris in the EI group. As metabolic biomarkers, the levels of swainsonine and apigenin-7-O-glucoside-4-O-rutinoside were significantly increased in the EI group. Through in vitro validation experiments, swainsonine and apigenin-7-O-glucoside-4-O-rutinoside can dramatically suppress the growth of pathogenic fungi Leptosphaeria sclerotioides and Colletotrichum americae-borealis by increasing the level of oxidative stress. This work suggested that O. ochrocephala containing A. oxytropis could increase the resistance to fungal diseases by markedly enhancing the content of metabolites inhibiting pathogenic fungi.

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Colonization of root endophytic fungus Serendipita indica improves drought tolerance of Pinus taeda seedlings by regulating metabolome and proteome

Wu,

Yang,

Wang

et al. 2024

Front. Microbiol.

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Pinus taeda is an important forest tree species for plantations because of its rapid growth and high yield of oleoresins. Although P. taeda plantations distribute in warm and wet southern China, drought, sometime serious and long time, often occurs in the region. To explore drought tolerance of P. taeda and usage of beneficial microorganisms, P. taeda seedlings were planted in pots and were inoculated with root endophytic fungus Serendipita indica and finally were treated with drought stress for 53 d. Metabolome and proteome of their needles were analyzed. The results showed that S. indica inoculation of P. taeda seedlings under drought stress caused great changes in levels of some metabolites in their needles, especially some flavonoids and organic acids. Among them, the levels of eriocitrin, trans-aconitic acid, vitamin C, uric acid, alpha-ketoglutaric acid, vitamin A, stachydrine, coumalic acid, itaconic acid, calceolarioside B, 2-oxoglutaric acid, and citric acid were upregulated more than three times in inoculated seedlings under drought stress, compared to those of non-inoculated seedlings under drought stress. KEGG analysis showed that some pathways were enriched in inoculated seedlings under drought stress, such as flavonoid biosynthesis, ascorbate and aldarate metabolism, C5-branched dibasic acid metabolism. Proteome analysis revealed some specific differential proteins. Two proteins, namely, H9X056 and H9VDW5, only appeared in the needles of inoculated seedlings under drought stress. The protein H9VNE7 was upregulated more than 11.0 times as that of non-inoculated seedlings under drought stress. In addition, S. indica inoculation increased enrichment of water deficient-inducible proteins (such as LP3-1, LP3-2, LP3-3, and dehydrins) and those involved in ribosomal structures (such as A0A385JF23). Meanwhile, under drought stress, the inoculation caused great changes in biosynthesis and metabolism pathways, mainly including phenylpropanoid biosynthesis, cutin, suberine and wax biosynthesis, and 2-oxocarboxylic acid metabolism. In addition, there were positive relationships between accumulation of some metabolites and enrichment of proteins in P. taeda under drought stress. Altogether, our results showed great changes in metabolome and proteome in inoculated seedlings under drought stress and provided a guideline to further study functions of metabolites and proteins, especially those related to drought stress.

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Endophytic Fungi Assures Tropical Forage Grass Growth by Water Stress Tolerances

Cited by 3 publications

References 40 publications

Diversity of Endophytes of Actinidia arguta in Different Seasons

Diversity of Endophytes of Actinidia arguta in Different Seasons

Multiomics Reveals Mechanisms of Alternaria oxytropis Inhibiting Pathogenic Fungi in Oxytropis ochrocephala

Colonization of root endophytic fungus Serendipita indica improves drought tolerance of Pinus taeda seedlings by regulating metabolome and proteome

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