scholarly journals The first use of morphologically isolated arbuscular mycorrhizal fungi single-species from Moroccan ecosystems to improve growth, nutrients uptake and photosynthesis in Ceratonia siliqua seedlings under nursery conditions

2021 ◽  
Author(s):  
El Mostapha Outamamat ◽  
Hanane Dounas ◽  
Faissal Aziz ◽  
Adnane Barguaz ◽  
Robin Duponnois ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Single Species ◽  
Ceratonia Siliqua ◽  
Nutrients Uptake

scholarly journals Arbuscular Mycorrhizal Fungi Mediate Drought Tolerance and Recovery in Two Contrasting Carob (Ceratonia siliqua L.) Ecotypes by Regulating Stomatal, Water Relations, and (In)Organic Adjustments

Plants ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 80 ◽  
Author(s):  
Abderrahim Boutasknit ◽  
Marouane Baslam ◽  
Mohamed Ait-El-Mokhtar ◽  
Mohamed Anli ◽  
Raja Ben-Laouane ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Drought Tolerance ◽  
Arbuscular Mycorrhizal Fungi ◽  
Oxidative Damage ◽  
Water Content ◽  
Mycorrhizal Fungi ◽  
Early Stage ◽  
Arbuscular Mycorrhizal ◽  
Ceratonia Siliqua ◽  
Improvement Programs

Irregular precipitation and drought caused an increase in tree mortality rates in multiple forest biomes with alterations in both ecosystem services and carbon balance. Carob (Ceratonia siliqua) growth and production in arid and semi-arid ecosystems are likely affected by climate change-induced droughts. Understanding the physiological responses of drought-induced early-stage tree death and strategies to enhance drought tolerance and optimize growth will help tree improvement programs. Mycorrhizal inoculation has a pronounced impact on plant growth, water absorption, mineral nutrition, and protection from abiotic stresses. However, a better understanding of these complex interconnected cellular processes and arbuscular mycorrhizal fungi (AMF)-mediated mechanisms regulating drought tolerance in plants will enhance its potential application as an efficient approach for bio-amelioration of stresses. The objectives of this work were to elucidate the different effects of autochthone AMF on inorganic solute and water content uptakes, organic adjustments (sugar and proteins content), leaf gas exchange (stomatal conductance and efficiency of photosystems I and II), and oxidative damage of two contrasting ecotypes of carob seedlings: coastal (southern ecotype (SE)) and in-land (northern ecotype (NE)) under control (C), drought (by cessation of irrigation for 15 days (15D)), and recovery (R) conditions. Our findings showed that AMF promoted growth, nutrient content, and physiological and biochemical parameters in plants of both ecotypes during C, 15D, and R conditions. After four days of recovery, stomatal conductance (gs), the maximum photochemical efficiency of PSII (Fv/Fm), water content, and plant uptake of mineral nutrients (P, K, Na, and Ca) were significantly higher in shoots of mycorrhizal (AM) than non-mycorrhizal (NM) control plants. Consequently, AMF reduced to a greater degree the accumulation of hydrogen peroxide (H2O2) and oxidative damage to lipid (malondialdehyde (MDA)) content in AM than NM plants in NE and SE, after recovery. Altogether, our findings suggest that AMF can play a role in drought resistance of carob trees at an early stage by increasing the inorganic solutes (P, K, Na, and Ca), water content uptake, organic solutes (soluble sugars and protein content), stomatal conductance, and defense response against oxidative damage during re-watering after drought stress.

scholarly journals Growth and nutrients uptake in Euterpe edulis Martius inoculated with arbuscular mycorrhizal fungi

2016 ◽  
Vol 46 (2) ◽  
pp. 169-176
Author(s):  
Sandro Lucio Silva Moreira ◽  
Paulo Prates Júnior ◽  
Raphael Bragança Alves Fernandes ◽  
Ana Catarina Monteiro Mori da Cunha ◽  
André Narvaes da Rocha Campos
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Germination Rate ◽  
Arbuscular Mycorrhizal ◽  
Initial Growth ◽  
Euterpe Edulis ◽  
Nutrients Uptake ◽  
Euterpe Edulis Martius ◽  
Growth Of Seedlings ◽  
Amf Inoculation

ABSTRACT Euterpe edulis Martius is one of the endangered species of the Brazilian Atlantic Forest which presents low germination rate and slow seedling growth. Arbuscular mycorrhizal fungi (AMF) are known by their symbiosis with plants, promoting an increase of water and nutrientes uptake. This study aimed at evaluating the effect of AMF inoculation on the initial growth (6 months) and nutrients uptake in E. edulis seedlings. Treatments consisted of the inoculation of pre-germinated seeds with AMF spores collected from three sites (forest, Juçara and crop), as well as a control with no inoculation. Seedlings growth, number of AMF spores in the substrate and uptake of the N, P, K, Ca and Mg macronutrients in plant tissues were analyzed. Inoculation with AMF improved the initial growth of seedlings, regardless of the source of inoculum used in the experiment, and the inoculation with material collected from rhizosphere increased the shoot and root dry biomass of seedlings by 43 % and 61 %, respectively. Inoculation with AMF provided a greater accumulation of all nutrients assessed in the shoot and root of seedlings, especially when spores were collected at the Juçara site. Inoculation with AMF is a promising strategy to improve the spread of this species.

scholarly journals Arbuscular Mycorrhizal Fungi Modulate the Crop Performance and Metabolic Profile of Saffron in Soilless Cultivation

Agronomy ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 232 ◽  
Author(s):  
Matteo Caser ◽  
Sonia Demasi ◽  
Íris Marisa Maxaieie Victorino ◽  
Dario Donno ◽  
Antonella Faccio ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Arbuscular Mycorrhizal Fungi ◽  
Open Field ◽  
Mycorrhizal Fungi ◽  
Climatic Factors ◽  
Arbuscular Mycorrhizal ◽  
Bioactive Compound ◽  
Single Species ◽  
Crocus Sativus ◽  
Alternative Cultivation

Saffron (Crocus sativus L.) is cultivated worldwide. Its stigmas represent the highest-priced spice and contain bioactive compounds beneficial for human health. Saffron cultivation commonly occurs in open field, and spice yield can vary greatly, from 0.15 to 1.5 g m−2, based on several agronomic and climatic factors. In this study, we evaluated saffron cultivation in soilless systems, where plants can benefit from a wealth of nutrients without competition with pathogens or stresses related to nutrient-soil interaction. In addition, as plant nutrient and water uptake can be enhanced by the symbiosis with arbuscular mycorrhizal fungi (AMF), we also tested two inocula: a single species (Rhizophagus intraradices) or a mixture of R. intraradices and Funneliformis mosseae. After one cultivation cycle, we evaluated the spice yield, quality (ISO category), antioxidant activity, and bioactive compound contents of saffron produced in soilless systems and the effect of the applied AMF inocula. Spice yield in soilless systems (0.55 g m−2) was on average with that produced in open field, while presented a superior content of several health-promoting compounds, such as polyphenols, anthocyanins, vitamin C, and elevated antioxidant activity. The AMF symbiosis with saffron roots was verified by light and transmission electron microscopy. Inoculated corms showed larger replacement corms (+50% ca.). Corms inoculated with R. intraradices performed better than those inoculated with the mix in terms of spice quality (+90% ca.) and antioxidant activity (+88% ca.). Conversely, the mixture of R. intraradices and F. mosseae increased the polyphenol content (+343% ca.). Thus, soilless systems appeared as an effective alternative cultivation strategy for the production of high quality saffron. Further benefits can be obtained by the application of targeted AMF-based biostimulants.

scholarly journals Efeect of AM fungi with additonal phosphate fertilazation on growth and nutrient uptake in Guizotia abyssinica (L.f) Cass.var, RCR-18

2016 ◽  
Vol 22 ◽  
pp. 45-51
Author(s):  
KP Gabriel ◽  
HC Lakshman ◽  
Tanzima Yeasmin
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Nutrient Uptake ◽  
Mycorrhizal Fungi ◽  
Root Colonization ◽  
Growth Yield ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Guizotia Abyssinica ◽  
Nutrients Uptake

Context: Arbuscular-Mycorrhizal fungi colonization in roots of many plants promotes the increased nutrient uptake especially the phosphorus from phosphorus deficient soil.Objective: To compare the efficacy of different concentration of recommended dosages of super phosphate fertilizers with inoculation of AM fungi to evaluate growth, nutrients uptake on Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18).Materials and Methods: The effect of two Arbuscular mycorrhizal fungi Scutellospora nigra and Glomus mosseae with 4 different dosage (25%, 50%, 75%, 100% ) of superphosphate (P2O5) was treated on growth yield and nutrient uptake in Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18) was evaluated under greenhouse conditions. Pots were watered they were harvested once in 30 days intervals. For 90 days the following readings viz., plant height, root length, biomass, grains yield, percent root colonization, spore number macro-micro nutrients contents in shoots and roots were determined.Results: Scutellospora nigra with 50% RDSP/kg showed a significant increase in the plant growth biomass of shoot and root of Guizotia abyssinica (L.f) Cass. var, RCR-18. Percent root colonization, seed number and N, P, K and Zn, Mg uptake in shoot and root.Conclusion: Overall, our results clearly suggest that synergistic and additive mechanisms involved can enhances the plant growth, nutrient uptake and adaptation to unfavorable drought soil conditions.J. bio-sci. 22: 45-51, 2014

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