Colonization of endophyte <i>Acremonium</i> sp. D212 in <i>Panax notoginseng</i> and rice mediated by auxin and jasmonic acid

Han, Li; Zhou, Xuan; Zhao, Yiting; Zhu, Shusheng; Li-xia, WU; He, Yan‐Ping; Ping, Xiangrui; Lu, Xinqi; Huang, Wuying; Qian, Jie; Zhang, Lina; Jiang, Xi; Zhu, Dan; Luo, Chongyu; Li, Saijie; Qian, Dong; Fu, Qijing; Deng, Kaiyuan; Wang, Xin; Wang, Lei; Song, Peng; Wu, Jinsong; Liu, Weimin; Friml, Jiřı́; Zhu, Youyong; He, Xiahong; Du, Yunlong

doi:10.1111/jipb.12905

Cited by 27 publications

(14 citation statements)

References 34 publications

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“…The genus Acremonium contains species that are saprophytes, pathogens as well as endophytes (Summerbell et al 2018 ; Han et al 2020 ). Isolate F12 was identified as a member of this genus as it had 98.18% sequence similarity with Acremonium sp 3 MMW-2015 strain (KP269047.1) which was recovered as endophyte from the green macroalgae Codium fragile from the coast of Qingdao, China (Wang et al 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial properties of marine fungi from sponges and brown algae of Mauritius

et al. 2021

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Purpose of the study: Marine fungi of Mauritius have been poorly studied. There are numerous reports on the bioactive secondary metabolites that are produced by fungi around the world. Yet, research on the molecular characterisation and the pharmaceutical potential of marine fungi in Mauritius is rather scanty. Method: The samples, which consisted of three sponges Haliclona sp., Iotrochota sp. and Biemna sp. and two brown algae Turbinaria conoides and Sargassum portierianum, were collected in the North of Mauritius during winter. No sporulating structures were observed from the fungal cultures making morphological analysis impossible. The molecular characterisation of the selected isolates was carried out by the amplification of the ITS regions and phylogenetic analysis. The antimicrobial properties were then determined using the disc diffusion and the minimum inhibitory concentration (MIC) assay. Results: Genus level identification was made from molecular data and for some isolates, specieslevel identification was even possible. Twelve fungi that showed the best antimicrobial properties were identified as Peniophora sp., Aspergillus cristatus, Acremonium sp., Cordyceps memorabilis, Aspergillus ochraceus, Biscogniauxia sp., Aspergillus keratitidis, Exserohilum rostratum, Chromocleista sp., Nigrospora oryzae, Aspergillus flavipes and Mycosphaerella. The lowest MIC result of 0.0098 mg/ mL was obtained with Chromocleista sp. mycelium extract against Staphylococcus aureus. The MIC of the mycelium extracts was lower than the broth extracts for most isolates indicating that the antimicrobial compounds are not secreted. Conclusion:Marine fungi from the Mauritian waters have immense potential in the search for natural products against antibiotic-resistant bacteria.

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Section: Discussionmentioning

confidence: 99%

Antimicrobial properties of marine fungi from sponges and brown algae of Mauritius

et al. 2021

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“…Several DSE species were found to produce IAA and to thereby promote plant growth and stress tolerance (Priyadharsini and Muthukumar 2017;Qiang et al 2019). Our results showed that DSE can participate in the adaptation of the non-mycorrhizal plant I. indigotica to drought by regulating its IAA metabolism (Han et al 2020;Wu et al 2020).…”

Section: Discussionmentioning

confidence: 63%

“…The root system is the primary organ that senses variations in soil moisture (Verma et al 2019). Previous research has shown that DSE can regulate plant root structure and improve plant fitness to drought stress (Han et al 2020;Li et al 2018;Li et al 2019b;Liu and Wei 2019). Meanwhile, AV 1 , EG, DA and AV 2 inoculation also increased the root surface area under drought stress.…”

Section: Discussionmentioning

confidence: 99%

Growth-promoting effects of dark septate endophytes on the non-mycorrhizal plant Isatis indigotica under different water conditions

Hou

Liu

et al. 2021

Symbiosis

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Dark septate endophytes (DSE) are root-associated fungi and can form plant-DSE symbioses to enhance the growth and abiotic stress resistance of plants. Although DSE exist in many non-mycorrhizal plants, the growing effects of DSE on non-mycorrhizal plants are currently poorly documented. This study investigated how DSE from mycorrhizal plants affect non-mycorrhizal plant growth especially under drought stress. In this study, the non-mycorrhizal plant Isatis indigotica was inoculated with DSE isolated from the roots of mycorrhizal plant Glycyrrhiza uralensis that grows in desert and farmland environments to evaluate plant performance and active ingredient content under different water treatments by measuring growth parameters and physiological indexes. The results indicated that seven DSE colonized the roots of I. indigotica regardless of watering regime. Inoculation with Acrocalymma vagum, Edenia gomezpompae and Darksidea alpha enhanced plant biomass, root surface area and epigoitrin content, and reduced oxidative damage from drought stress. Under drought stress condition, DSE inoculation caused remarkable increases in photosynthesis and revealed positive effects on SOD activity and proline content, which was reliance on fungus species. Correlation analyses indicated that root biomass was negatively correlated with soil pH and available phosphorus, and net photosynthetic rate was negatively correlated with soil organic carbon and available phosphorus. Therefore, DSE isolated from mycorrhizal plants could enhance the growth and active ingredient content of I. indigotica. The link between DSE and non-mycorrhizal plant highlights a potential application for DSE strains in dryland medicinal plant cultivation.

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“…JA is also present in other fungi in addition to L. pseudotheobromae LPS-1, such as Acremonium sp. D212, Botryodiplodia theobromae , L. theobromae strain 2334, and L. iranensis ( Husain et al., 1993 ; Eng et al., 2016 ; Han et al., 2020 ; Shen et al., 2022 ). However, in this study, we do not know the molecular mechanism of 3-ICA and JA antagonizing B. graminis at present.…”

Section: Discussionmentioning

confidence: 99%

Indole-3-Carboxylic Acid From the Endophytic Fungus Lasiodiplodia pseudotheobromae LPS-1 as a Synergist Enhancing the Antagonism of Jasmonic Acid Against Blumeria graminis on Wheat

Que

Huang

Gong

et al. 2022

Front. Cell. Infect. Microbiol.

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The discovery of natural bioactive compounds from endophytes or medicinal plants against plant diseases is an attractive option for reducing the use of chemical fungicides. In this study, three compounds, indole-3-carbaldehyde, indole-3-carboxylic acid (3-ICA), and jasmonic acid (JA), were isolated from the EtOAc extract of the culture filtrate of the endophytic fungus Lasiodiplodia pseudotheobromae LPS-1, which was previously isolated from the medicinal plant, Ilex cornuta. Some experiments were conducted to further determine the antifungal activity of these compounds on wheat powdery mildew. The results showed that JA was much more bioactive than indole-3-carbaldehyde and 3-ICA against Blumeria graminis, and the disease severity caused by B. graminis decreased significantly with the concentration increase of JA treatment. The assay of the interaction of 3-ICA and JA indicated that there was a significant synergistic effect between the two compounds on B. graminis in each of the ratios of 3-ICA to JA (3-ICA:JA) ranging from 1:9 to 9:1. When the compound ratio of 3-ICA to JA was 2:8, the synergistic coefficient was the highest as 22.95. Meanwhile, a histological investigation indicated that, under the treatment of JA at 500 μg/ml or 3-ICA:JA (2:8) at 40 μg/ml, the appressorium development and haustorium formation of B. graminis were significantly inhibited. Taken together, we concluded that JA plays an important role in the infection process of B. graminis and that 3-ICA as a synergist of JA enhances the antagonism against wheat powdery mildew.

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Colonization of endophyte Acremonium sp. D212 in Panax notoginseng and rice mediated by auxin and jasmonic acid

Cited by 27 publications

References 34 publications

Antimicrobial properties of marine fungi from sponges and brown algae of Mauritius

Antimicrobial properties of marine fungi from sponges and brown algae of Mauritius

Growth-promoting effects of dark septate endophytes on the non-mycorrhizal plant Isatis indigotica under different water conditions

Indole-3-Carboxylic Acid From the Endophytic Fungus Lasiodiplodia pseudotheobromae LPS-1 as a Synergist Enhancing the Antagonism of Jasmonic Acid Against Blumeria graminis on Wheat

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