scholarly journals Effect of arbuscular mycorrhizal fungi and pesticides on Cynara cardunculus growth

2002 ◽  
Vol 11 (3) ◽  
pp. 245-251 ◽  
Author(s):  
M. MARIN ◽  
M. YBARRA ◽  
A. FÉ
Keyword(s):  
Mycorrhizal Fungi ◽  
Glomus Mosseae ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Shoot Biomass ◽  
Cynara Cardunculus ◽  
Mycorrhizal Inoculation ◽  
Positive Effect ◽  
Wild Cardoon ◽  
Glomus Sp

Wild cardoon (Cynara cardunculus L.) is a promising crop for biomass production. A nursery trial was conducted to investigate the effectiveness of mycorrhizal inoculation on the biomass yield of wild cardoon seedlings and the effect of the pesticides fosetyl-Al, folpet and propamocarb, as fungicides, and isofenphos, phoxim and oxamyl, as insecticides, on cardoon plant growth and the mycorrhization. The arbuscular mycorrhizal (AM) fungi inocula were: commercial inoculum with Glomus mosseae spores, and an inoculum of a Glomus sp. strain (AMF-i) isolated locally. Mycorrhizal inoculation with either inoculum increased cardoon shoot biomass compared to non-inoculated control plants. The pesticide applications had a neutral or positive effect on cardoon seedling growth. However, the AM fungi colonisation did not decrease except for plants colonised by G. mosseae and treated with the insecticides isofenphos and oxamyl. Thus, the mycorrhiza can survive to pesticide concentrations employed in commercial nursery, and enhance cardoon plant productivity.

scholarly journals Arbuscular mycorrhizal colonization and growth of Eremanthus incanus Less. in a highland field

2010 ◽  
Vol 56 (No. 9) ◽  
pp. 412-418 ◽  
Author(s):  
M.C. Pagano ◽  
M.N. Cabello ◽  
M.R. Scotti
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Common Species ◽  
Mycorrhizal Colonization ◽  
Gigaspora Margarita ◽  
Arbuscular Mycorrhizal Colonization ◽  
Mycorrhizal Inoculation ◽  
Highland Vegetation ◽  
Glomus Sp

This paper focuses on Eremanthus incanus Less. (Asteraceae), a common species of highland regions in Brazil. The effect of arbuscular mycorrhizal (AM) inoculation on plant growth (height and diameter) was evaluated. Roots were examined from individuals randomly selected from undisturbed areas of highland vegetation and from an experimental restored site. Results showed that E. incanus presented high AM colonization both in restored and undisturbed sites. Moreover, AM colonization was significantly higher in the inoculated treatment than in the non-inoculated one. The species presented Arum-type colonization and frequent production of vesicles, especially in the restored site. Arbuscular mycorrhizal inoculation stimulated plant growth (height and diameter). Ten AM fungi (AMF) taxa were found in the studied rooting zones: Acaulospora spinosa, A. elegans, A. foveata, Acaulospora sp., Gigaspora margarita, Glomus sp., Dentiscutata biornata, D. cerradensis, Dentiscutata sp. and Racocetra verrucosa. These results revealed that AMF is a common and important component in highland vegetation in Brazil, and should be included in future restoration programs.

scholarly journals Real-case application of mycorrhizal inoculums on Capsicum annuum L. var. longum cv. Szegedi and Kalocsai

2013 ◽  
Vol 19 (1-2) ◽  
Author(s):  
I. Hernádi ◽  
K. Posta
Keyword(s):  
Mycorrhizal Fungi ◽  
Crop Production ◽  
Arbuscular Mycorrhizal ◽  
Fresh Weight ◽  
Vegetative Development ◽  
Hyphal Length ◽  
Glomus Spp ◽  
Mycorrhizal Inoculation ◽  
Case Application ◽  
Positive Effect

The aim of this study was to test the use of commercially available arbuscular mycorrhiza (AM) inoculant Symbivit, a mixture of six species of Glomus spp., in spice pepper field cultivation. The inoculants containing arbuscular mycorrhizal fungi (AMF) was able to establish a symbiosis in the rhizosphere of pepper plants and mycorrhizal inoculation increased fresh and dry weights of shoots of spice pepper cv. Szegedi and only fresh weight of Kalocsai type. There were no significant differences in the root weights due to treatment only in fresh weight of Kalocsai pepper type. Treated plants of both variants exhibited an increase in cumulative crop production compared with control non-treated plants and the growth response of pepper was higher for var. Szegedi than var. Kalocsai. Mycorrhizal inoculation had a great positive effect on external hyphal length of AMF also showing differences in that between Kalocsai and Szegedi variants. The root colonization showed seasonality by treated and non-treated plants. The lowest degree of colonization was observed in June in general and colonization percent increased during vegetative development and there was a slight decrease at harvesting. In conclusion, it can be stated that inoculation with Symbivit containing mycorrhizal fungi could be an integral part of spice pepper production.

scholarly journals Arbuscular mycorrhizal fungi increase Pb uptake of colonized and non-colonized Medicago truncatula root and deliver extra Pb to colonized root

2021 ◽  
Author(s):  
Haoqiang Zhang ◽  
Wei Ren ◽  
Yaru Zheng ◽  
Fei Zhao ◽  
Ming Tang
Keyword(s):  
Medicago Truncatula ◽  
Mycorrhizal Fungi ◽  
Plant Root ◽  
Biomass Accumulation ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Shoot Biomass ◽  
Terrestrial Plants ◽  
Split Root ◽  
Split Root System

Abstract Aims Arbuscular mycorrhizal (AM) fungi form symbiosis with terrestrial plants and improve lead (Pb) tolerance of host plants. The AM plants accumulate more Pb in root than their non-mycorrhizal counterparts. However, the direct contribution of the mycorrhizal pathway to host plant Pb uptake was less reported. Methods In this study, the AM fungi colonized and non-colonized root of Medicago truncatula was separated by a split-root system, and their differences in responding to Pb application was compared. Results Inoculation of Rhizophagus irregularis increased shoot biomass accumulation and transpiration, and decreased both colonized and non-colonized root biomass accumulation. Application of Pb in the non-colonized root compartment increased the colonization rate of R. irregularis and up-regulated the relative expressions of MtPT4 and MtBCP1 in the colonized root compartment. Inoculation of R. irregularis increased the Pb uptake in both colonized and non-colonized plant root, while R. irregularis transferred Pb to the colonized root. The Pb transferred through the mycorrhizal pathway had low mobility move from root to shoot, and might be sequestrated and compartmented by R. irregularis. Conclusions The Pb uptake of plant root might follow water flow that facilitated by the aquaporin MtPIP2. The quantification of Pb transfer via mycorrhizal pathway and the involvement of MtPIP2 deserve further study.

Differential contribution of arbuscular mycorrhizal fungi to plant nitrate uptake (15N) under increasing N supply to the soil

2001 ◽  
Vol 79 (10) ◽  
pp. 1175-1180 ◽  
Author(s):  
R Azcón ◽  
J M Ruiz-Lozano ◽  
R Rodríguez
Keyword(s):  
Mycorrhizal Fungi ◽  
Nitrate Uptake ◽  
Glomus Mosseae ◽  
Arbuscular Mycorrhizae ◽  
Nitrogen Nutrition ◽  
Nitrate Assimilation ◽  
Growth Period ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Mycorrhizal Symbiosis

The objective of this study was to determine how the uptake and transport of nitrate by two species of arbuscular mycorrhizal (AM) fungi is affected by its concentration in the medium and by the age of the AM symbiosis. Tracer amounts of15N nitrate were applied at two plant growth periods to mycorrhizal or nonmycorrhizal lettuce plants, which had been grown in soil supplied with nitrate to provide a total of 84, 168, or 252 mg N/kg. At both injection times, Glomus mosseae (Nicol. and Gerd.) Gerd. and Trappe and Glomus fasciculatum (Thaxter sensu Gerd.) Gerd. and Trappe reached the highest values of nitrogen derived from the fertilizer (NdfF) at 84 mg N/kg. Glomus mosseae also reached the highest values of labeled fertilizer N utilization at 84 mg N/kg, whereas G. fasciculatum reached the highest values at 168 mg N/kg in the medium. The highest N level in the medium (252 mg N/kg) had a negative effect on % NdfF and % labeled fertilizer utilization for all mycorrhizal plants. Regarding the time of15N fertilizer application, G. fasciculatum-colonized plants had a minimum change in % NdfF and % labeled fertilizer utilization during the growth period (60 days application vs. 30 days application). In contrast, G. mosseae-colonized plants growing at 168 mg N/kg in the medium, decreased these two values in the latest application. The present results confirm that mycorrhizal symbiosis may be particularly important for nitrogen nutrition in plants growing in neutral-alkaline soils.Key words: arbuscular mycorrhizae, nitrate assimilation, nitrate uptake,15N-labeled fertilizer.

scholarly journals Alleviation of salt stress in citrus seedlings inoculated with mycorrhiza: changes in leaf antioxidant defense systems

2010 ◽  
Vol 56 (No. 10) ◽  
pp. 470-475 ◽  
Author(s):  
Q.S. Wu ◽  
Y.N. Zou ◽  
W. Liu ◽  
X.F. Ye ◽  
H.F. Zai ◽  
...  
Keyword(s):  
Salt Stress ◽  
Mycorrhizal Fungi ◽  
Glomus Mosseae ◽  
Antioxidant Defense ◽  
Arbuscular Mycorrhizal ◽  
Poncirus Trifoliata ◽  
Growth Reduction ◽  
Defense Systems ◽  
Antioxidant Defense Systems ◽  
Mycorrhizal Inoculation

Citrus is a salt-sensitive plant. In the present study, the salt stress ameliorating the effect of arbuscular mycorrhizal fungi through antioxidant defense systems was reported. Three-month-old trifoliate orange (Poncirus trifoliata) seedlings colonized by Glomus mosseae or G. versiforme were irrigated with 0 and 100 mmol NaCl solutions. After 49 days of salinity, mycorrhizal structures were obviously restrained by salt stress. Mycorrhizal inoculation especially G. mosseae significantly alleviated the growth reduction of salinity. There were notably lower malondialdehyde and hydrogen peroxide contents in the leaves of mycorrhizal seedlings than in non-mycorrhizal ones. Mycorrhizal seedlings recorded notably greater activity of catalase and contents of ascorbate, soluble protein and glutathione under salinity or non-salinity conditions. The seedlings colonized by G. mosseae showed significantly higher antioxidant defense systems response to salinity than by G. versiforme. Our data demonstrate that mycorrhizal (especially G. mosseae) citrus seedlings exhibited greater efficient antioxidant defense systems, which provide better protection against salt damage.

scholarly journals Effet de l’inoculation mycorhizienne avec des souches des champignons mycorhiziens arbusculaires sur la croissance de Mucuna pruriens (L.) DC en condition contrôlée

2020 ◽  
Vol 14 (3) ◽  
pp. 1065-1073
Author(s):  
Hadou Haro ◽  
Kadidia Semde ◽  
Kadidiata Bahadio ◽  
Kadidia B. Sanon
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Burkina Faso ◽  
Mycorrhizal Fungi ◽  
Growth Parameters ◽  
Arbuscular Mycorrhizal ◽  
Mucuna Pruriens ◽  
Shoot Biomass ◽  
Total Biomass ◽  
Mycorrhizal Inoculation

Au Burkina Faso, l’élevage occupe plus de 80% des ménages ruraux et constitue le troisième produit d’exportation après l’or et le coton. De type extensif, cet élevage est basé essentiellement sur l’exploitation des ressources naturelles. Ainsi, il doit s’adapter aux grandes variations saisonnières et interannuelles des ressources en biomasse végétale et en eau. Or les aléas climatiques, l’étendue et la qualité des pâturages, de même que les contraintes rendent l’activité pastorale souvent précaire. C’est ainsi que cette étude a été initiée dans le but de contribuer à améliorer la production fourragère. Dans cette étude, Mucuna pruriens a été cultivé en serre et inoculé avec deux inocula de champignons mycorhiziens arbusculaires. Les paramètres de croissance ont été mesurés à 30 et 60 jours après semis. La biomasse aérienne, racinaire et totale a été évaluée à 60 jours après semis. Les résultats montrent une amélioration de la croissance en hauteur du mucuna de 225,76%, de la biomasse aérienne de 56,79%, la biomasse racinaire de 70% et la biomasse totale de 61,16% par rapport au témoin non inoculé. Cette étude a montré des résultats intéressants et mérite d’être approfondie par des essais in situ tout en étendant l’étude sur les inoculations rhizobiennes.Mots clés : Mucuna, inoculation mycorhizienne, champignons mycorhiziens arbusculaires.   English Title: Effect of mycorrhizal inoculation with arbuscular mycorrhizal fungi strains on Mucuna pruriens (L.) DC growth under controlled conditionIn Burkina Faso, breeding occupies more than 80% of rural households and is the third export product after gold and cotton. Extensive type, this breeding is based essentially on the exploitation of natural resources. Thus, it must adapt to large seasonal and interannual variations in plant biomass and water resources. Climatic hazards, the extent and quality of pastures, as well as constraints make pastoral activity often precarious. Therefore, this study was initiated with the aim of helping to improve forage production. In this study, Mucuna pruriens was grown in a greenhouse and inoculated with two inocula of arbuscular mycorrhizal fungi. The growth parameters were measured at 30 and 60 days after sowing. Shoot, root and total biomass was evaluated at 60 days after sowing. The results show an improvement in the height growth of mucuna by 225.76%, shoot biomass by 56.79%, root biomass by 70% and total biomass by 61.16% compared to the control. This study showed interesting results and deserves to be deepened by in situ tests while extending the study of rhizobial inoculations. Keywords: Mucuna, mycorrhizal inoculation, arbuscular mycorrhizal fungi

Development and resistance to Verticillium dahliae of olive plantlets inoculated with mycorrhizal fungi during the nursery period

2006 ◽  
Vol 144 (2) ◽  
pp. 151-157 ◽  
Author(s):  
A. PORRAS-SORIANO ◽  
I. MARCILLA-GOLDARACENA ◽  
M. L. SORIANO-MARTÍN ◽  
A. PORRAS-PIEDRA
Keyword(s):  
Verticillium Dahliae ◽  
Mycorrhizal Fungi ◽  
Olea Europaea ◽  
Glomus Mosseae ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Higher Plant ◽  
La Mancha ◽  
Better Than ◽  
Olea Europaéa

The current study, performed in Castilla-La Mancha (Spain) in 2003–04, reports the growth, nutrition, tolerance to transplanting stress, and resistance to Verticillium dahliae of olive plantlets (Olea europaea L.) inoculated with different arbuscular mycorrhizal (AM) fungi (Glomus mosseae, G. intraradices and G. claroideum). Inoculated plants tolerated the stress of transplanting better than non-inoculated plants. Compared with controls, plantlets inoculated with any of these three Glomus species grew taller, had more and longer shoots, and showed higher plant N, P and K concentrations. However, colonization seemed to have no influence on resistance to V. dahliae.

scholarly journals Arbuscular Mycorrhizal Fungi Increase Pb Uptake of Colonized and Non-Colonized Medicago truncatula Root and Deliver Extra Pb to Colonized Root Segment

2021 ◽  
Vol 9 (6) ◽  
pp. 1203
Author(s):  
Haoqiang Zhang ◽  
Wei Ren ◽  
Yaru Zheng ◽  
Yanpeng Li ◽  
Manzhe Zhu ◽  
...  
Keyword(s):  
Medicago Truncatula ◽  
Mycorrhizal Fungi ◽  
Biomass Accumulation ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Rhizophagus Irregularis ◽  
Root Segment ◽  
Shoot Biomass ◽  
Split Root System ◽  
Long Term Impact

Arbuscular mycorrhizal (AM) fungi establish symbiosis and improve the lead (Pb) tolerance of host plants. The AM plants accumulate more Pb in roots than their non-mycorrhizal counterparts. However, the direct and long-term impact of AM fungi on plant Pb uptake has been rarely reported. In this study, AM fungus (Rhizophagus irregularis) colonized and non-colonized roots of Medicago truncatula were separated by a split-root system, and their differences in responding to Pb application were compared. The shoot biomass accumulation and transpiration were increased after R. irregularis inoculation, whereas the biomass of both colonized and non-colonized roots was decreased. Lead application in the non-colonized root compartment increased the R. irregularis colonization rate and up-regulated the relative expressions of MtPT4 and MtBCP1 in the colonized root compartments. Rhizophagus irregularis inoculation increased Pb uptake in both colonized and non-colonized roots, and R. irregularis transferred Pb to the colonized root segment. The Pb transferred through the colonized root segment had low mobility and might be sequestrated and compartmented in the root by R. irregularis. The Pb uptake of roots might follow water flow, which is facilitated by MtPIP2. The quantification of Pb transfer via the mycorrhizal pathway and the involvement of MtPIP2 deserve further study.

scholarly journals THE INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI ON ALFALFA RESISTANCE AGAINST POLLUTION WITH HEAVY METALS AND ARSENICUM

2007 ◽  
Vol 5 ◽  
pp. 7-14
Author(s):  
Zh.Z. Guralchuk ◽  
C. Del Val ◽  
J.M. Barea ◽  
C. Azcon-Aguilar
Keyword(s):  
Heavy Metals ◽  
Arbuscular Mycorrhizal Fungi ◽  
Medicago Sativa ◽  
Soil Pollution ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Shoot Biomass ◽  
Mycorrhizal Infection ◽  
Medicago Sativa L ◽  
Positive Effect

The influence of the mycorrhizal infection by G. mosseae (Nicol. et Gerd.) Gerd et Trappe on the growth of Medicago sativa L. plants under different level of soil pollution with heavy metals (Zn, Pb, Cd, Cu) and arsenicum was studied. It was established the strongly increase of the growth and shoot biomass of mycorrhizal plants. The positive effect of mycorrhization on the growth of alfalfa plants was greater in the soils with the higher level of soil pollution with heavy metals and arsenicum.

Effects of arbuscular mycorrhizal fungi onCapsicumspp.

2015 ◽  
Vol 154 (5) ◽  
pp. 828-849 ◽  
Author(s):  
J. A. P. PEREIRA ◽  
I. J. C. VIEIRA ◽  
M. S. M. FREITAS ◽  
C. L. PRINS ◽  
M. A. MARTINS ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Growth Yield ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Sweet Pepper ◽  
Economic Importance ◽  
Growth And Yield ◽  
Plant Interaction ◽  
Mycorrhizal Inoculation

SUMMARYThe benefits of mycorrhizal inoculation on growth, yield and nutrition of plants are well documented. However, mycorrhiza use in pepper and sweet pepper crops (Capsicumspp.) is still rarely exploited compared to other crops of economic importance. The current paper reviews the main aspects of the association between arbuscular mycorrhizal (AM) fungi and plants of pepper and sweet pepper. It includes topics about the effects of AM fungi on nutrition, growth and yield inCapsicumspp., paying particular attention to AM fungi–pathogen interactions, responses to some environmental stresses, as well as biochemical and physiological aspects of AM fungi–plant interaction inCapsicum annuumL.

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