&lt;i&gt;Pseudosigmoidea ibarakiensis&lt;/i&gt; sp. nov., a Dark Septate Endophytic Fungus from a Cedar Forest in Ibaraki, Japan

Diene, Ousmane; Wang, Wei; Narisawa, Kazuhiko

doi:10.1264/jsme2.me13002

Cited by 25 publications

(22 citation statements)

References 40 publications

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“…Similar to previous works on plant responses to inoculation with DSE fungi (Usuki and Narisawa, 2007 ; Diene et al, 2013 ; Mahmoud and Narisawa, 2013 ; Qin et al, 2017 ), the present study showed that inoculation with DSE fungi led to an increase in aboveground dry biomass of tomato plants supplied with an organic N source (finely ground C. ensiformis - 15 N). The same effect was not observed in plants treated with an inorganic N source (ammonium sulfate- 15 N).…”

Section: Discussionsupporting

confidence: 91%

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Dark Septate Endophytic Fungi Help Tomato to Acquire Nutrients from Ground Plant Material

et al. 2017

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Dark septate endophytic (DSE) fungi are facultative biotrophs that associate with hundreds of plant species, contributing to their growth. These fungi may therefore aid in the search for sustainable agricultural practices. However, several ecological functions of DSE fungi need further clarification. The present study investigated the effects of DSE fungi inoculation on nutrient recovery efficiency, nutrient accumulation, and growth of tomato plants fertilized with organic and inorganic N sources. Two experiments were carried out under greenhouse conditions in a randomized blocks design, with five replicates of tomato seedlings grown in pots filled with non-sterile sandy soil. Tomato seedlings (cv. Santa Clara I-5300) inoculated with DSE fungi (isolates A101, A104, and A105) and without DSE fungi (control) were transplanted to pots filled with 12 kg of soil which had previously received finely ground plant material [Canavalia ensiformis (L.)] that was shoot enriched with 0.7 atom % 15N (organic N source experiment) or ammonium sulfate-15N enriched with 1 atom % 15N (mineral N source experiment). Growth indicators, nutrient content, amount of nitrogen (N) in the plant derived from ammonium sulfate-15N or C. ensiformis-15N, and recovery efficiency of 15N, P, and K by plants were quantified 50 days after transplanting. The treatment inoculated with DSE fungi and supplied with an organic N source showed significantly higher recovery efficiency of 15N, P, and K. In addition, the 15N, N, P, K, Ca, Mg, Fe, Mn, and Zn content, plant height, leaf number, leaf area (only for the A104 inoculation), and shoot dry matter increased. In contrast, the only positive effects observed in the presence of an inorganic N source were fertilizer-K recovery efficiency, content of K, and leaf area when inoculated with the fungus A104. Inoculation with A101, A104, and A105 promoted the growth of tomato using organic N source (finely ground C. ensiformis-15N plant material).

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Section: Discussionsupporting

confidence: 91%

“…Samples were observed and images were analyzed as described above. Symptoms were evaluated on scale of 0–3 (0: no visible symptoms; 1: light yellowing; 2: yellowing and late growth; 3: wilting or death) (Diene et al, 2013 ; Mahmoud and Narisawa, 2013 ).…”

Section: Methodsmentioning

confidence: 99%

Dark Septate Endophytic Fungi Help Tomato to Acquire Nutrients from Ground Plant Material

et al. 2017

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“…Usuki & Narisawa (2007) evaluated the ability of H. chaetospira to use different amino acids and inorganic N sources, and observed a significant increase in fungal dry mass in media modified with organic sources of the nutrient, compared with that supplemented with NH 4 NO 3 or without N. The same authors, while inoculating this fungus in B. campestris supplemented with the same N sources, found that inoculation promoted the use of all amino acids and NaNO 3 , with effects on plant growth. Similar results have been reported in the literature (Diene et al, 2013;Mahmoud & Narisawa, 2013).…”

Section: Dark Septate Endophytic Fungisupporting

confidence: 92%

“…In contrast, in cucumber (Cucumis sativus L.) inoculated with the DSE Pseudosigmoidea ibarakiensis and supplemented only with leucine, there was a 44% reduction in plant dry mass (Diene et al, 2013). However, in rice plants inoculated with DSE fungi, grown under controlled conditions and supplemented with NH 4 NO 3 , significant increments were observed for plant dry matter, N amino acid, soluble sugars, number of tillers, besides changes in NO 3absorption kinetic parameters (K m and V max ) (Vergara et al, 2018a).…”

Section: Dark Septate Endophytic Fungimentioning

confidence: 95%

Plant-mycorrhizal fungi interaction and response to inoculation with different growth-promoting fungi

Vergara

Araujo

Souza

et al. 2019

Pesq. agropec. bras.

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The symbiotic interaction between arbuscular mycorrhizal fungi (AMF) and 70-90% of the plant species is largely studied, but ectomycorrhizal fungi, Piriformospora indica, Trichoderma sp., and dark septate endophytes (DSE), also establish beneficial interactions with plants. Despite this, the joint discussion on the biochemical, physiological, and molecular aspects of nutrient transfer, mainly from the extraradical mycelium (ERM) to the plant, is still limited. The objective of this review is to present biochemical, physiological, and molecular approaches to the plant-AMF interaction, as well as to analyze the response of plants to inoculations with different growth-promoting fungi. Here, are highlighted the characteristics of the H+-ATPases and of the transporters of NH4+ and H2PO4- involved in the absorption of phosphorus and nitrogen by the soil through the ERM of the AMF, besides the biochemical aspects of the metabolism of both nutrients in the ERM and their translocations from the ERM to the intraradical mycelium and to the host plant. Finally, the nitrogen fertilizer recovery efficiency in plants inoculated with AMF, Trichoderma sp., P.indica, and DSE fungi is presented. By examining, together, the biochemical, physiological, and molecular aspects of the plant-AMF interaction and the nitrogen fertilizer recovery efficiency in inoculated plants, it is possible to conclude that a low-input agriculture could be achieved with the use of these fungi in agrosystems.

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“…Therefore, to our knowledge, this study is the first report involving DSEs in such environments. Three of the isolates used in the present study, i.e., H. velutinum isolate 41-1, V. simplex isolate Y34 and P. ibarakiensis isolate I.4-2-1, have already been reported to support plant growth under nutrient-deficient and other acidic pH conditions but not in contaminated conditions [30] , [31] , [32] . These results shed a light on a new field of use of these isolates.…”

Section: Discussionmentioning

confidence: 83%

The Role of Dark Septate Endophytic Fungal Isolates in the Accumulation of Cesium by Chinese Cabbage and Tomato Plants under Contaminated Environments

2014

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Following the 2011 Fukushima Daiichi Nuclear Power Plant accident, the preservation of the food chain from radionuclides contamination has become of crucial importance. The potential of Dark septate endophytic fungi in the management of Cs accumulation in plants under contaminated environments was investigated using Chinese cabbage and tomato plants. Four endophytic fungal isolates of different species, i.e. Pseudosigmoidea ibarakiensis I.4-2-1, Veronaeopsis simplex Y34, Helminthosporium velutinum 41-1, and as yet unidentified taxon 312-6 were tested In Vitro in two levels of Cs (5ppm and 10ppm). On the plant growth, the inoculation of the selected DSEs to both Chinese cabbage and tomato resulted in an increased biomass of up to 82% and 122%, respectively compared to control (non-inoculated) plants. With regards to the Cs accumulation, it varied with the host plant considered. In Chinese cabbage, DSEs inoculation caused higher Cs accumulation in above ground plant parts, whereas in tomato, Cs accumulation decreased significantly with three of the isolates tested, i.e., V. simplex Y34, P. ibarakiensis I.4-2-1, and the as yet unidentified taxon 312-6 suggesting low-risk transfer on the above ground plants parts as a result of high and negative plant reactions rather than high and positive reactions as it is the case with Chinese cabbage. These results suggested that DSEs can be recommended for use with Chinese cabbage to enhance phytoremediation of Cs in surrounding contaminated areas. With tomato, DSEs can be recommended for decreasing the accumulation of Cs in plants under contaminated environments.

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<i>Pseudosigmoidea ibarakiensis</i> sp. nov., a Dark Septate Endophytic Fungus from a Cedar Forest in Ibaraki, Japan

Cited by 25 publications

References 40 publications

Dark Septate Endophytic Fungi Help Tomato to Acquire Nutrients from Ground Plant Material

Dark Septate Endophytic Fungi Help Tomato to Acquire Nutrients from Ground Plant Material

Plant-mycorrhizal fungi interaction and response to inoculation with different growth-promoting fungi

The Role of Dark Septate Endophytic Fungal Isolates in the Accumulation of Cesium by Chinese Cabbage and Tomato Plants under Contaminated Environments

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