scholarly journals Metal accumulation, growth and nutrition of Vernonia polyanthes exposed to lead nitrate and arbuscular mycorrhizal fungi

2021 ◽  
Vol 37 ◽  
pp. e37045
Author(s):  
Joacir Morais ◽  
Cácio Luiz Boechat ◽  
Daniela Fernandes De Oliveira ◽  
Adriana Miranda de Santana Arauco ◽  
Filipe Selau Carlos ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Chlorophyll A ◽  
Mycorrhizal Fungi ◽  
Lead Nitrate ◽  
Translocation Factor ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Growth And Nutrition ◽  
High Concentrations ◽  
Low Efficiency

The association between plants and arbuscular mycorrhizal fungi (AMF) can be used to bioremediate areas contaminated by metals. The objectives of this work were to evaluate the lead (Pb2+) phytoaccumulation capacity, morpho-physiology and nutrition responses of Vernonia polyanthes exposed to a solution amended with concentrations of lead nitrate and arbuscular mycorrhizal fungi. The treatments consisted of increasing doses of Pb2+ as lead nitrate [Pb(NO3)2], two strains of AMF and an absolute control without lead and AMF. Lead negatively affected some morphophysiological variables, reduced 27.3, 25.63, 30.60, and 56.60% shoot length, root collar diameter, number of leaves and leaf area, respectively, besides reducing decreasing chlorophyll a. Lead accumulated in the shoot and roots, the latter at the highest concentrations. However, the translocation factor was above 1, indicating low efficiency. The bioaccumulation factor referring to the roots were above 1. The fungi colonization rate was low, 3.31% for Gigaspora margarita and 2.33% for Acaulospora morrowiae. However, the absorption of lead increased, reflecting in lower values of chlorophyll a, dry mass of root and diameter. Results indicated that the arboreal species V. polyanthes tolerate high concentrations of lead and can accumulate significant amounts in the roots. AMF increase the accumulation of lead in the shoot and can be used in projects aimed at the phytoextraction of metals.

scholarly journals Simultaneous monitoring of electrical capacitance and water uptake activity of plant root system

2014 ◽  
Vol 28 (4) ◽  
pp. 537-541 ◽  
Author(s):  
Imre Cseresnyés ◽  
Tünde Takács ◽  
Anna Füzy ◽  
Kálmán Rajkai
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Water Uptake ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Root Water Uptake ◽  
Electrical Capacitance ◽  
Relative Increment ◽  
Uptake Activity ◽  
Daily Transpiration

Abstract Pot experiments were designed to test the applicability of root electrical capacitance measurement for in situ monitoring of root water uptake activity by growing cucumber and bean cultivars in a growth chamber. Half of the plants were inoculated with Funneliformis mosseae arbuscular mycorrhizal fungi, while the other half served as non-infected controls. Root electrical capacitance and daily transpiration were monitored during the whole plant ontogeny. Phenology-dependent changes of daily transpiration (related to root water uptake) and root electrical capacitance proved to be similar as they showed upward trends from seedling emergence to the beginning of flowering stage, and thereafter decreased continuously during fruit setting. A few days after arbuscular mycorrhizal fungi-colonization, daily transpiration and root electrical capacitance of infected plants became significantly higher than those of non-infected counterparts, and the relative increment of the measured parameters was greater for the more highly mycorrhizal-dependent bean cultivar compared to that of cucumber. Arbuscular mycorrhizal fungi colonization caused 29 and 69% relative increment in shoot dry mass for cucumbers and beans, respectively. Mycorrhization resulted in 37% increase in root dry mass for beans, but no significant difference was observed for cucumbers. Results indicate the potential of root electrical capacitance measurements for monitoring the changes and differences of root water uptake rate.

Effects of arbuscular mycorrhizal fungi on photosynthesis and chlorophyll fluorescence of maize seedlings under salt stress

2018 ◽  
pp. 199 ◽  
Author(s):  
Hongwen Xu, Yan Lu ◽  
Shuyuan Tong
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Leaf Area ◽  
Salinity Stress ◽  
Mycorrhizal Fungi ◽  
Photosynthetic Capacity ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Saline Stress ◽  
Rubisco Activity

The impact of arbuscular mycorrhizal fungi (AMF) Glomus. tortuosum on morphology, photosynthetic pigments, chlorophyll (Chl) fluorescence, photosynthetic capacity and rubisco activity of maize under saline stress were detected under potted culture experiments. The experimental result indicated the saline stress notably reduced both dry mass and leaf area in contrast with the control treatment. Nevertheless, AMF remarkably ameliorated dry mass and leaf area under saline stress environment. Besides, maize plants appeared to have high dependency on AMF which improved physiological mechanisms by raising chlorophyll content, efficiency of light energy utilization, gas exchange and rubisco activity under salinity stress. In conclusion, AM could mitigate the growth limitations caused by salinity stress, and hence play a very important role in promoting photosynthetic capacity under salt stress in maize.

scholarly journals ARBUSCULAR MYCORRHIZAL FUNGI ON THE INITIAL GROWTH AND NUTRITION OF Parkia Platycephala BENTH. UNDER WATER STRESS

CERNE ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 66-74
Author(s):  
Dayara Lins Porto ◽  
Adriana Miranda de Santana Arauco ◽  
Cácio Luiz Boechat ◽  
Adriano de Oliveira Silva ◽  
Mara Regina Moitinho ◽  
...  
Keyword(s):  
Water Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Initial Growth ◽  
Growth And Nutrition

scholarly journals Effect of arbuscular mycorrhizal fungi and rhizobacteria on banana growth and nutrition

2005 ◽  
Vol 25 (3) ◽  
pp. 395-399 ◽  
Author(s):  
Ana Sue Rodríguez-Romero ◽  
María Sol Piñero Guerra ◽  
María del Carmen Jaizme-Vega
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Growth And Nutrition

scholarly journals Inoculation with mycorrhizal fungi on the growth and tolerance to water deficit of coffee plants

2018 ◽  
Vol 22 (11) ◽  
pp. 747-752 ◽  
Author(s):  
Samuel D. Moreira ◽  
André C. França ◽  
Wellington W. Rocha ◽  
Evandro S. R. Tibães ◽  
Eudes Neiva Júnior
Keyword(s):  
Soil Moisture ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Field Capacity ◽  
Dry Mass ◽  
Mycorrhizal Colonization ◽  
Coffee Plants ◽  
Moisture Conditions ◽  
Water Contents

ABSTRACT Water stress can be alleviated in plants inoculated with arbuscular mycorrhizal fungi compared to that experienced by those without mycorrhizae. The objective of this study was to evaluate the growth of coffee plants colonized by arbuscular mycorrhizal fungi under different soil moisture conditions. Seeds of the coffee cultivar Catuaí Vermelho IAC 99 and three fungal inoculants (Rhizophagus clarus, Claroideoglomus etunicatum and Dentiscutata heterogama) were used in this study. The soil moisture contents tested were 40, 60, 80, and 100% of field capacity. Seedlings in the matchstick stage were inoculated with mycorrhizae, and then later planted in plastic pots when they developed four to five pairs of definitive leaves. Both the extent of mycorrhizal colonization and increases in leaf area were related to soil moisture content in a quadratic manner for plants inoculated with all three mycorhizzal fungi (R. clarus, C. etunicatum, and D. heterogama), as well as for non-inoculated ones. The highest value of colonization of coffee by mycorrhizae was 39%, which occurred in association with R. clarus at 71% of field capacity. The leaf areas of plants inoculated with fungi increased more than those of non-inoculated plants, regardless of the type of inoculum used. Plants inoculated with D. heterogama at 100% field capacity produced 21% more root dry mass than non-inoculated plants did. Inoculation with arbuscular mycorrhizal fungi and higher soil moisture increased the growth of coffee seedlings. The plants inoculated with R. clarus, C. etunicatum, and D. heterogama were tolerant to moderate water deficits (i.e. lower soil water contents). Mycorrhizal colonization was highest for plants in soils with moisture levels close to 75% of field capacity.

scholarly journals Meta-analysis of Lamiaceae and Euphorbiaceae medicinal plants inoculated with arbuscular mycorrhizal fungi

10.21475/na ◽  
2019 ◽  
Vol 13 ((04) 2019) ◽  
pp. 588-598
Author(s):  
Sonivaldo Ruzzene Beltrame ◽  
Rayane Monique Sete da Cruz ◽  
Emerson Luiz Botelho Lourenço ◽  
Odair Alberton
Keyword(s):  
Medicinal Plants ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Meta Analysis ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Control Group ◽  
P Accumulation ◽  
Ornamental Crops ◽  
The Mean

Lamiaceae and Euphorbiaceae are two families of plants grown as medicinal, aromatic, food and ornamental crops, and are of great commercial importance. The cultivation of these species depends on soil quality and availability of soil resources. Arbuscular mycorrhizal fungi (AMF) usually penetrates plants through their roots, supplying plants with water and nutrients and receiving photosynthesis products in return. These types of symbiosis benefit the development and production of crops. To analyze the effects of AMF inoculation on the production of plants of these families, a meta - analysis was performed using 183 data of Lamiaceae plants and 68 data of Euphorbiaceae plants. Meta-analysis consists of compiling data from literature to obtain the response ratio, calculated by the mean of the experimental group divided by the mean of the control group. The response variables were shoot dry mass (SDM), total dry mass (TDM), plant height and accumulation of phosphorus in the plant shoot (P-shoot). Results showed an increased mean production of AMF-inoculated plants with a 96% and 97% increase of SDM in Lamiaceae and Euphorbiaceae, respectively. Increases of 91% in TDM and 248% in P accumulated in the plant shoot were observed for Lamiaceae; values that were higher than those of Euphorbiaceae at 110% and 675%, respectively. This meta-analysis confirmed the potential of AMF to increase biomass production and P accumulation in medicinal plants of the Lamiaceae and Euphorbiaceae families.

scholarly journals Development of mycorrhizal soybean grown in copper-contaminated soil

2021 ◽  
Vol 42 (6supl2) ◽  
pp. 3617-3632
Author(s):  
Daiane Sartori Andreola ◽  
◽  
Juliano de Oliveira Stumm ◽  
Daniel Erison Fontanive ◽  
Djavan Antonio Coinaski ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Contaminated Soil ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Root Surface ◽  
Shoot Height ◽  
Rhizophagus Clarus ◽  
Randomized Design ◽  
Copper Contaminated

High concentrations of copper in the soil are toxic to the development of plants and microorganisms. The aim of this study was to select arbuscular mycorrhizal fungi efficient for the development and yield of soybeangrown in copper-contaminated soil. The experiment was laid out in a completely randomized design with a 7 × 4 factorial arrangement corresponding to seven rates of copper (0, 80, 160, 240, 320, 400, and 480 mg kg-1 of soil) and four inocula (uninoculated control and three mycorrhizal fungi, namely, Acaulospora colombiana, Dentiscutata heterogama and Rhizophagus clarus), in seven replicates. Shoot height; collar diameter; number of grains per plant; shoot and root-system dry mass; leaf area; specific root surface; copper content and accumulation in the shoots, roots, and grain; chlorophyll parameters; and mycorrhizal colonization percentage were evaluated. Inoculation with the arbuscular mycorrhizal fungi Acaulospora colombiana, Dentiscutata heterogama and Rhizophagus clarus increases the phenological and physiological parameters of soybean and its yield when grown in soil contaminated with up to 480 mg kg-1 of copper applied to the soil. The Rhizophagus clarus isolate provides greater development and yield in soybean grown in soil contaminated with up to 480 mg kg-1 of copper applied to the soil, as compared with the other isolates.

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