Effects of Salinity and Arbuscular Mycorrhizal Fungi (AMF) on Root Growth Development and Productivity of Chia (Salvia hispanica L.), a Promising Salt-Tolerant Crop, Under Mediterranean Conditions

2020 ◽  
pp. 1-30
Author(s):  
Dimitrios J. Bilalis ◽  
Ioannis Roussis ◽  
Ioanna Kakabouki ◽  
Stella Karydogianni
2017 ◽  
Vol 109 (1) ◽  
pp. 79 ◽  
Author(s):  
Zahra Marzban ◽  
Elham Faryabi ◽  
Shahram Torabian

<p>In order to evaluate arbuscular mycorrhizal fungi and rhizobium bacteria effects on leaf nitrogen (N) and phosphorus (P) concentration and root characteristics of green bean and maize under intercropping, experiment was carried out in the research field of College of Agriculture, Payame Noor University of Azna, Lorestan, Iran. In experiment, sandy loam soil with pH 7.3 and EC 0.49 dS m<sup>-1</sup> was used.The treatments comprised three cropping systems (sole cropping of green bean and maize, and intercropping), and four inoculations (control, arbuscular mycorrhizal fungi, rhizobium and mix of arbuscular mycorrhizal fungi and rhizobium). The results showed that inoculation with rhizobium improved length, diameter, volume and area of green bean root.The highest of green bean N, P concentration and root dry mass were observed in sole culture of green bean inoculated with arbuscular mycorrhizal fungi. Moreover, root length, diameter, volume and area of maize increased by arbuscular mycorrhizal fungi, and total concentration of N and P enhanced with use of rhizobium in sole cropping. Although the usage of <em>Rhizobium </em>and AMF can be affected on increasing the root growth and nutrient uptake of crops, application of bacterium and fungi combination at the same time would not be suitable. Overall, intercropping of maize with green bean caused to increase of leaf N and P concentrations and root growth of maize.</p>


2019 ◽  
Author(s):  
M. Rosario Ramírez-Flores ◽  
Elohim Bello-Bello ◽  
Rubén Rellán-Álvarez ◽  
Ruairidh J. H. Sawers ◽  
Víctor Olalde-Portugal

ABSTRACTPlant root systems play an essential role in nutrient and water acquisition. In resource-limited soils, modification of root system architecture is an important strategy to optimize plant performance. Most terrestrial plants also form symbiotic associations with arbuscular mycorrhizal fungi to maximize nutrient uptake. In addition to direct delivery of nutrients, arbuscular mycorrhizal fungi benefit the plant host by promoting root growth. Here, we aimed to quantify the impact of arbuscular mycorrhizal symbiosis on root growth and nutrient uptake in maize. Inoculated plants showed an increase in both biomass and the total content of twenty quantified elements. In addition, image analysis showed mycorrhizal plants to have denser, more branched root systems. For most of the quantified elements, the increase in content in mycorrhizal plants was proportional to root and overall plant growth. However, the increase in boron, calcium, magnesium, phosphorus, sulfur and strontium was greater than predicted by root system size alone, indicating fungal delivery to be supplementing root uptake.


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