Multifactorial Role of Arbuscular Mycorrhizae in Agroecosystem

2018 ◽  
pp. 205-220 ◽  
Author(s):  
U. N. Bhale ◽  
S. A. Bansode ◽  
Simranjeet Singh
Keyword(s):  
Arbuscular Mycorrhizae

Uptake of fertilizer sulfur by maize from soils of low sulfur status as affected by vesicular-arbuscular mycorrhizae

1999 ◽  
Vol 79 (4) ◽  
pp. 557-559 ◽  
Author(s):  
M. R. Banerjee ◽  
S. J. Chapman ◽  
K. Killham
Keyword(s):  
Growth And Development ◽  
Arbuscular Mycorrhizae ◽  
Plant Growth And Development ◽  
Vesicular Arbuscular Mycorrhizae ◽  
S Uptake ◽  
Vesicular Arbuscular ◽  
Key Words Maize ◽  
Maize Plants ◽  
Low Sulfur

Vesicular-arbuscular mycorrhizae (VAM) generally enhances uptake and translocation of P and encourages plant growth and development in nutrient-deficient soils. Contradictory reports about the role of VAM in S uptake and translocation may result from insufficient consideration of soil S status. In this study, using soils of low S status, VAM inoculation increased the content of radioactively labelled S (35S) in shoots of maize plants. Key words: Maize plant, S-uptake, Vesicular-arbuscular mycorrhizae fungi

Seedling growth of two pioneer tropical tree species in Competition: The role of arbuscular mycorrhizae

Euphytica ◽  
2004 ◽  
Vol 138 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Patricia Guadarrama ◽  
Javier Álvarez-Sánchez ◽  
Oscar Briones
Keyword(s):  
Seedling Growth ◽  
Tree Species ◽  
Arbuscular Mycorrhizae ◽  
Tropical Tree ◽  
Tropical Tree Species

Isotopic evaluation of the role of arbuscular mycorrhizae in the nitrogen preference in Chinese fir seedlings

Pedobiologia ◽  
2012 ◽  
Vol 55 (3) ◽  
pp. 167-174 ◽  
Author(s):  
He-Chun Piao ◽  
Cong-Qiang Liu ◽  
Shi-Jie Wang
Keyword(s):  
Arbuscular Mycorrhizae ◽  
Chinese Fir

scholarly journals Role of Arbuscular Mycorrhizae Fungi and Humic Acid in Controlling Root and Crown Rot of Strawberry

2018 ◽  
Vol 17 (2) ◽  
pp. 65-74 ◽  
Author(s):  
Eman Yehia Khaf ◽  
Sozan Eid El-Abe ◽  
Maali Shaker Sol ◽  
Shereen El-Sayed Mohamed El ◽  
Yosra Ahmed
Keyword(s):  
Humic Acid ◽  
Arbuscular Mycorrhizae ◽  
Crown Rot ◽  
Root And Crown Rot

The role of mycorrhizae in plant ecology

1983 ◽  
Vol 61 (3) ◽  
pp. 1005-1014 ◽  
Author(s):  
T. V. St. John ◽  
D. C. Coleman
Keyword(s):  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizae ◽  
Carbon Allocation ◽  
Indirect Evidence ◽  
Plant Ecology ◽  
Wild Plants ◽  
Organic Layer ◽  
Natural Ecosystems ◽  
Mycorrhizal Roots

The effects of vesicular–arbuscular mycorrhizae (VAM) and ectomycorrhizae (ECM) on plant ecology are considered, with emphasis on four areas. The first of these is mycotrophy in wild plants. We suggest that many natives have lower nutrient demands than crop plants and may therefore be less responsive to mycorrhizal infection. Pot experiments must be interpreted with caution because their outcome is strongly influenced by such factors as soil type and pot size. The second topic is the role of mycorrhizae in competition. Mycorrhizae have been shown to figure in plant–plant competition for limited resources. Several lines of indirect evidence suggest that mycorrhizae are involved in allelopathic interactions between plants. Mycorrhizae could aid in competition between plants and microorganisms. Mycorrhizal roots are sometimes found in humus layers of the forest floor. It has been postulated that mycorrhizal fungi influence the decomposition of plant detritus. The most important role of mycorrhizal roots in the organic layer may be, in many cases, a close physical association with the most nutrient-rich microsites of the heterogeneous soil volume. The ability to allocate absorbing tissue to localized organic matter zones has been documented for roots of forest trees and for hyphae of VAM fungi. The advantageous physical placement may result in greater nutrient acquisition for the plant than would occur if root and hyphal distribution were random. Third, the occurrence of mycorrhizae in natural communities has not frequently been documented in ways that show the abundance of infection in the whole community. Future surveys in natural ecosystems should include a measure of the relative abundance of the major plant species in the community. The final topic is carbon allocation to the symbiosis. We suggest that estimates for VAM from a few percent to ~50% of gross photosynthesis can be reconciled to some extent by considering the dynamic processes of root and mycelial turnover.

scholarly journals The role of CLV signalling in the negative regulation of mycorrhizal colonisation and nitrogen response of tomato

2020 ◽  
Author(s):  
Chenglei Wang ◽  
Karen Velandia ◽  
Choon-Tak Kwon ◽  
Kate E Wulf ◽  
David S Nichols ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizae ◽  
Arbuscular Mycorrhizal ◽  
Negative Regulation ◽  
Nitrogen Response ◽  
Receptor Like Kinase ◽  
Mycorrhizal Colonisation ◽  
Deep Homology ◽  
The Common

Abstract Plants form mutualistic nutrient acquiring symbioses with microbes, including arbuscular mycorrhizal fungi. The formation of these symbioses is costly and plants employ a negative feedback loop termed autoregulation of mycorrhizae (AOM) to limit arbuscular mycorrhizae (AM) formation. We provide evidence for the role of one leucine-rich-repeat receptor like kinase (FAB), a hydroxyproline O-arabinosyltransferase enzyme (FIN) and additional evidence for one receptor like protein (SlCLV2) in the negative regulation of AM formation in tomato. Reciprocal grafting experiments suggest that the FAB gene acts locally in the root, while the SlCLV2 gene may act in both the root and the shoot. External nutrients including phosphate and nitrate can also strongly suppress AM formation. We found that FAB and FIN are required for nitrate suppression of AM but are not required for the powerful suppression of AM colonisation by phosphate. This parallels some of the roles of legume homologs in the autoregulation of the more recently evolved symbioses with nitrogen-fixing bacteria leading to nodulation. This deep homology in the symbiotic role of these genes suggests that in addition to the early signalling events that lead to the establishment of AM and nodulation, the autoregulation pathway might also be considered part of the common symbiotic toolkit that enabled plants to form beneficial symbioses.

scholarly journals The role of arbuscular mycorrhizae in primary succession: differences and similarities across habitats

Web Ecology ◽  
2010 ◽  
Vol 10 (1) ◽  
pp. 50-57 ◽  
Author(s):  
Z. Kikvidze ◽  
C. Armas ◽  
K. Fukuda ◽  
L. B. Martínez-García ◽  
M. Miyata ◽  
...  
Keyword(s):  
Primary Succession ◽  
Arbuscular Mycorrhizae ◽  
Sand Dunes ◽  
Volcanic Eruptions ◽  
Arbuscular Mycorrhizas ◽  
Ecological Systems ◽  
Knowledge Based ◽  
Successional Species ◽  
Ecological Mechanisms

Abstract. Primary succession is an ecological process of fundamental importance referring to the development of vegetation on areas not previously occupied by a plant community. The bulk of knowledge on primary succession comes from areas affected by relatively recent volcanic eruptions, and highlights the importance of symbiosis between host plants and fungi for the initial stages of succession. Arbuscular mycorrhizas (AM) are of particular interest as they are often present from the very beginning of primary succession and because they show different relationships with pioneer and late-successional species, which suggests they may be involved in important, yet unknown, ecological mechanisms of succession. We review existing knowledge based on case studies from the volcanic desert of Mount Fuji, Japan, where primary succession was examined intensively and which represents one of the best-known cases on the role of AM in primary succession. We also assess the potential of sand dunes and semi-arid, erosion-prone systems for addressing the role of mycorrhizas in primary succession. Analyzing primary succession under different ecological systems is critical to understand the role of AM in this basic process. While volcanoes and glaciers are restricted to particular mountainous areas, naturally eroded areas and sand dunes are more common and easily accessible, making them attractive models to study primary succession.

scholarly journals The role of CLV signalling in the negative regulation of mycorrhizal colonisation and nitrogen response of tomato

2020 ◽  
Author(s):  
Chenglei Wang ◽  
Karen Velandia ◽  
Choon-Tak Kwon ◽  
Kate E. Wulf ◽  
David S. Nichols ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizae ◽  
Arbuscular Mycorrhizal ◽  
Negative Regulation ◽  
Nitrogen Response ◽  
Receptor Like Kinase ◽  
Mycorrhizal Colonisation ◽  
Deep Homology ◽  
The Common

AbstractPlants form mutualistic nutrient acquiring symbioses with microbes, including arbuscular mycorrhizal fungi. The formation of these symbioses is costly and plants employ a negative feedback loop termed autoregulation of mycorrhizae (AOM) to limit arbuscular mycorrhizae (AM) formation. We provide evidence for the role of one leucine-rich-repeat receptor like kinase (FAB), a hydroxyproline O-arabinosyltransferase enzyme (FIN) and additional evidence for one receptor like protein (SlCLV2) in the negative regulation of AM formation in tomato. Reciprocal grafting experiments suggest that the FAB gene acts locally in the root, while the SlCLV2 gene may act in both the root and the shoot. External nutrients including phosphate and nitrate can also strongly suppress AM formation. We found that FAB and FIN are required for nitrate suppression of AM but are not required for the powerful suppression of AM colonisation by phosphate. This parallels some of the roles of legume homologs in the autoregulation of the more recently evolved symbioses with nitrogen-fixing bacteria leading to nodulation. This deep homology in the symbiotic role of these genes suggests that in addition to the early signalling events that lead to the establishment of AM and nodulation, the autoregulation pathway might also be considered part of the common symbiotic toolkit that enabled plants to form beneficial symbioses.HighlightWe describe the role of CLV signalling elements in the negative regulation of arbuscular mycorrhizal symbioses of tomato, including influencing nitrate but not phosphate suppression of mycorrhizal colonisation.

Role of Vesicular-Arbuscular Mycorrhizae in Mobilization of Soil Phosphorus

2017 ◽  
pp. 317-331
Author(s):  
M. Lalitha ◽  
K. S. Anil Kumar ◽  
S. Dharumarajan ◽  
N. Balakrishnan ◽  
R. Srinivasan ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizae ◽  
Soil Phosphorus ◽  
Vesicular Arbuscular Mycorrhizae ◽  
Vesicular Arbuscular
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