Effect of Thermomyces fungal endophyte isolated from extreme hot desert-adapted plant on heat stress tolerance of cucumber

Ali, Abeer H.; Abdelrahman, Mostafa; Radwan, Usama; El-Zayat, Soad A.; El‐Sayed, Magdi A.

doi:10.1016/j.apsoil.2017.11.004

Cited by 80 publications

(43 citation statements)

References 41 publications

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“…Whether this occurs in the plant-endophyte systems here described would require inoculation of FRP seedlings and evaluation of plant performance parameters under salinity stress. The search for endophytes from the core microbiome of wild plants adapted to unhospitable habitats has produced interesting solutions for the improvement of stress tolerance on agronomic crops (Redman et al, 2011; Ali et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

A Survey of Culturable Fungal Endophytes From Festuca rubra subsp. pruinosa, a Grass From Marine Cliffs, Reveals a Core Microbiome

et al. 2019

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Festuca rubra subsp. pruinosa is a perennial grass that inhabits sea cliffs of the Atlantic coasts of Europe. In this unhospitable environment plants grow in rock crevices and are exposed to abiotic stress factors such as low nutrient availability, wind, and salinity. Festuca rubra subsp. pruinosa is a host of the fungal endophyte Epichloë festucae, which colonizes aerial organs, but its root mycobiota is unknown. The culturable endophytic mycobiota of FRP roots was surveyed in a set of 105 plants sampled at five populations in marine cliffs from the northern coast of Spain. In total, 135 different fungal taxa were identified, 17 of them occurred in more than 10% of plants and in two or more populations. Seven taxa belonging to Fusarium, Diaporthe, Helotiales, Drechslera, Slopeiomyces, and Penicillium appeared to be constituents of the core microbiome of Festuca rubra subsp. pruinosa roots because they occurred in more than 20% of the plants analyzed, and at three or more populations. Most fungal strains analyzed (71.8%) were halotolerant. The presence of Epichloë festucae in aboveground tissue was detected in 65.7% of the plants, but its presence did not seem to significantly affect the structure of the core or other root microbiota, when compared to that of plants free of this endophyte. When plants of the grass Lolium perenne were inoculated with fungal strains obtained from Festuca rubra subsp. pruinosa roots, a Diaporthe strain significantly promoted leaf biomass production under normal and saline (200 mM NaCl) watering regimes. These results suggest that the core mycobiome of Festuca rubra subsp. pruinosa could have a role in host plant adaptation, and might be useful for the improvement of agricultural grasses.

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Section: Discussionmentioning

confidence: 99%

A Survey of Culturable Fungal Endophytes From Festuca rubra subsp. pruinosa, a Grass From Marine Cliffs, Reveals a Core Microbiome

et al. 2019

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“…A number of studies have illustrated the impact of the single inoculation of biotic abiotic stress mitigation including metal-resistant and plant growth-promoting microorganisms, including rhizobacteria Pseudomonas libanensis, Pseudomonas reactans, Micrococcus luteus ( Ma et al, 2016b ; Pinter et al, 2017 ) endophytic Pseudomonas azotoformans, Streptomyces sp. ( Ma et al, 2017 ; Qin et al, 2017 ), arbuscular mycorrhizal (AM) fungi Rhizophagus irregularis, Funneliformis mosseae , and F. caledonium ( Mnasri et al, 2017 ; Zhang et al, 2018 ), and endophytic Thermomyces sp, Piriformospora indica, Penicillium janthinellum ( Shahabivand et al, 2017 ; Ali et al, 2018 ) on alleviating environmental stresses including the metal toxicity-induced stresses and improving soil remediation efficiencies. Conversely, the impact of the co-inoculation of bacterial and fungal interaction on plants under abiotic stresses, including metal toxicity, is rarely studied.…”

Section: Introductionmentioning

confidence: 99%

Endophytic Microbial Consortia of Phytohormones-Producing Fungus Paecilomyces formosus LHL10 and Bacteria Sphingomonas sp. LK11 to Glycine max L. Regulates Physio-hormonal Changes to Attenuate Aluminum and Zinc Stresses

et al. 2018

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The compatible microbial consortia containing fungal and bacterial symbionts acting synergistically are applied to improve plant growth and eco-physiological responses in extreme crop growth conditions. However, the interactive effects of phytohormones-producing endophytic fungal and bacterial symbionts plant growth and stress tolerance under heavy metal stress have been least known. In the current study, the phytohormones-producing endophytic Paecilomyces formosus LHL10 and Sphingomonas sp. LK11 revealed potent growth and tolerance during their initial screening against combined Al and Zn (2.5 mM each) stress. This was followed with their co-inoculation in the Al- and Zn-stressed Glycine max L. plants, showing significantly higher plant growth attributes (shoot/root length, fresh/dry weight, and chlorophyll content) than the plants solely inoculated with LHL10 or LK11 and the non-inoculated (control) plants under metal stresses. Interestingly, under metal stress, the consortia exhibited lower metal uptake and inhibited metal transport in roots. Metal-induced oxidative stresses were modulated in co-inoculated plants through reduced hydrogen peroxide, lipid peroxidation, and antioxidant enzymes (catalase and superoxide dismutase) in comparison to the non-inoculated plants. In addition, endophytic co-inoculation enhanced plant macronutrient uptake (P, K, S, and N) and modulated soil enzymatic activities under stress conditions. It significantly downregulated the expression of heavy metal ATPase genes GmHMA13, GmHMA18, GmHMA19, and GmPHA1 and upregulated the expression of an ariadne-like ubiquitin ligase gene GmARI1 under heavy metals stress. Furthermore, the endogenous phytohormonal contents of co-inoculated plants revealed significantly enhanced gibberellins and reduced abscisic acid and jasmonic acid contents, suggesting that this endophytic interaction mitigated the adverse effect of metal stresses in host plants. In conclusion, the co-inoculation of the endophytic fungus LHL10 and bacteria LK11 actively contributed to the tripartite mutualistic symbiosis in G. max under heavy metal stresses; this could be used an excellent strategy for sustainable agriculture in the heavy metal-contaminated fields.

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“…However, if the soil is condensed and has low drainage capacity, sodium ions are not readily displaced by gypsum calcium ions and leaching of sodium ions by irrigation water or rainfall can be largely ineffective, and the salinity of the soil water can actually increase (Ilyas, Qureshi, & Qadir, ; Zia‐ur‐Rehman et al, ). It should also be noted that chemical applications can inhibit microbial respiration and enzymatic activities (Norton & Strom, ), and this could affect the reclamation processes as microbes play important roles in healthy soils (Ali, Abdelrahman, Radwan, El‐Zayat, & El‐Sayed, ). Although the hydro‐technical technique is ineffective without gypsum application, the electro‐reclamation technique remediates saline soils through electrodialysis (Zia‐ur‐Rehman et al, ).…”

Section: Conventional Methods For the Remediation Of Saline Soilsmentioning

confidence: 99%

Salt stress tolerance mechanisms and potential applications of legumes for sustainable reclamation of salt‐degraded soils

et al. 2018

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Soil salinity is considered one of the most detrimental environmental problems affecting the productivity of many agricultural crops, with negative effects on seed germination, plant vigour, and crop yields. To mitigate these negative effects, it is necessary to restrategize and identify viable options that are environmentally and economically applicable for sustainable agriculture. This review summarizes and evaluates soil reclamation strategies that have been employed and those that could potentially be used, concentrating on the use of legume crops. Apart from the fact that legumes have many nutritional benefits as foods, they are also an attractive option to refertilize degraded and nitrogen‐deficient soils. Thus, the potential use of grain, grass, shrubby, and tree legumes to restore degraded soils requires evaluation. In this paper, we discuss and evaluate why legumes should be considered and used for the reclamation of degraded soils, with a particular focus on salt‐degraded soils. Globally relevant case‐studies that demonstrate how legumes could be used to reclaim salt‐degraded soils are highlighted.

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Effect of Thermomyces fungal endophyte isolated from extreme hot desert-adapted plant on heat stress tolerance of cucumber

Cited by 80 publications

References 41 publications

A Survey of Culturable Fungal Endophytes From Festuca rubra subsp. pruinosa, a Grass From Marine Cliffs, Reveals a Core Microbiome

A Survey of Culturable Fungal Endophytes From Festuca rubra subsp. pruinosa, a Grass From Marine Cliffs, Reveals a Core Microbiome

Endophytic Microbial Consortia of Phytohormones-Producing Fungus Paecilomyces formosus LHL10 and Bacteria Sphingomonas sp. LK11 to Glycine max L. Regulates Physio-hormonal Changes to Attenuate Aluminum and Zinc Stresses

Salt stress tolerance mechanisms and potential applications of legumes for sustainable reclamation of salt‐degraded soils

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