Cropping enhances mycorrhizal benefits to maize in a tropical soil

Jemo, Martin; Adamou, Souleymanou; Frossard, Emmanuel; Jansa, Jan

doi:10.1016/j.soilbio.2014.09.014

Cited by 16 publications

(12 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among those, improved acquisition of phosphorus (P) by mycorrhizal plants as compared to their non-mycorrhizal counterparts is considered to be most important. This is because P is often the limiting resource for plant growth in a lot of natural as well as agricultural habitats; it has a low mobility in soils and the AM fungal hyphae, extending up to several cm from the roots, markedly increase access for plants to this soil resource (Jakobsen et al, 1992 ; Jansa et al, 2003 , 2005 ; Cardoso et al, 2006 ; Jemo et al, 2014 ). The AM fungi are supposed to have better access to the sparsely distributed soil sources as compared to the plant roots (Smith and Read, 2008 ; Neumann and George, 2010 ) due to their very thin (3–7 μm) hyphae, which can explore wider area with lower overall expense (be it C or energy) than the roots.…”

Section: Introductionmentioning

confidence: 99%

Lights Off for Arbuscular Mycorrhiza: On Its Symbiotic Functioning under Light Deprivation

Konvalinková

Jansa

2016

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Plants are often exposed to shade over different time scales and this may substantially affect not only their own growth, but also development and functioning of the energetically dependent organisms. Among those, the root symbionts such as arbuscular mycorrhizal (AM) fungi and rhizobia represent particularly important cases—on the one hand, they consume a significant share of plant carbon (C) budget and, on the other, they generate a number of important nutritional feedbacks on their plant hosts, often resulting in a net positive effect on their host growth and/or fitness. Here we discuss our previous results comparing mycorrhizal performance under different intensities and durations of shade (Konvalinková et al., 2015) in a broader context of previously published literature. Additionally, we review publicly available knowledge on the root colonization and mycorrhizal growth responses in AM plants under light deprivation. Experimental evidence shows that sudden and intensive decrease of light availability to a mycorrhizal plant triggers rapid deactivation of phosphorus transfer from the AM fungus to the plant already within a few days, implying active and rapid response of the AM fungus to the energetic status of its plant host. When AM plants are exposed to intensive shading on longer time scales (weeks to months), positive mycorrhizal growth responses (MGR) are often decreasing and may eventually become negative. This is most likely due to the high C cost of the symbiosis relative to the C availability, and failure of plants to fully compensate for the fungal C demand under low light. Root colonization by AM fungi often declines under low light intensities, although the active role of plants in regulating the extent of root colonization has not yet been unequivocally demonstrated. Quantitative information on the rates and dynamics of C transfer from the plant to the fungus is mostly missing, as is the knowledge on the involved molecular mechanisms. Therefore, these subjects deserve particular attention in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Lights Off for Arbuscular Mycorrhiza: On Its Symbiotic Functioning under Light Deprivation

Konvalinková

Jansa

2016

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, as a result of their functional importance in natural and agricultural ecosystems, the composition of AMF communities has been investigated in natural ecosystems and agroecosystems using molecular techniques. Agricultural management methods such as land use systems, host crops and crop rotation, as well as the soil quality type, can affect AMF biomass or diversity in the roots and soil rhizosphere. Furthermore, previous studies have investigated whether major seasonal changes occur in the assemblages of AMF communities throughout the growing season and how long these changes might take .…”

Section: Introductionmentioning

confidence: 99%

How are arbuscular mycorrhizal associations related to maize growth performance during short‐term cover crop rotation?

et al. 2017

View full text Add to dashboard Cite

AMF variables and maize performance were related directly or indirectly to maize grain yield, whereas root colonization had a positive effect on maize performance. AMF may be an essential factor that determines the success of cover crop rotational systems. Encouraging AMF associations can potentially benefit cover cropping systems. Therefore, it is imperative to consider AMF associations and crop phenology when making management decisions. © 2017 Society of Chemical Industry.

show abstract

“…The roles of arbuscular mycorrhizal ( AM) fungi in HM stress alleviation of plants exposed to HM-contaminated soils and their contribution to the phytoremediation process have already been recognized [ 11 ]. AM fungi can improve nutrition acquisition of plant [ 13 – 15 ] and provide a HM isolation belt to protect plant against HM toxicity [ 16 – 17 ]. Meanwhile, AM fungi can also prevent plant from absorbing HM by secreting some organic compounds (such as glomalin) in soil to chelate metal ions [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Inoculation with Glomus versiforme on Cadmium Accumulation, Antioxidant Activities and Phytochelatins of Solanum photeinocarpum

et al. 2015

View full text Add to dashboard Cite

The plant growth, phosphate acquisition, Cd translocation, phytochelatins (PCs) production and antioxidant parameters [superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (POD), ascorbate peroxidase (APX), glutathione reductase (GR), glutathione (GSH), ascorbate (ASA) and malonaldehyde (MDA)] were investigated in Cd-hyperaccumulator Solanum photeinocarpum inoculated with Glomus versiforme BGC GD01C (Gv) in Cd-added soils (0, 5, 10, 20, 40 mg Cd kg-1 soil). Mycorrhizal colonization rates were generally high (from 77% to 94%), and hardly affected by Cd. Gv colonization significantly enhanced P acquisition, growth and total Cd uptakes in both shoots and roots of S. photeinocarpum at all Cd levels. Meanwhile, Gv symbiosis significantly increased Cd concentration in the roots, and decreased Cd concentration in the shoots at all Cd levels, which indicates that Gv could promote phytostabilization by enhancing Cd accumulation in the roots to inhibit its translocation to shoots and the “dilution effects” linked to an increase in plant dry matter yield and a reduced Cd partitioning to shoots. Moreover, the improvement of CAT, POD and APX activities in the leaves of mycorrhizal plants infers that Gv symbiosis helped S. photeinocarpum to relieve oxidative damage to biomolecules in Cd-contaminated soil. The evident decline of MDA content in the leaves of mycorrhizal plants indicates that Gv symbiosis evidently improved antioxidant activities, and the enhancement of PCs production in the leaves of mycorrhizal plants suggests that Gv-inoculated plant may be more efficient to relieve Cd phytotoxicity. Therefore, the possible mechanisms of Cd phytotoxicity alleviation by Gv can be concluded as the decline of Cd concentration in the shoots and the improvement of P acquisition, PCs production and activities of CAT, POD, APX in mycorrhizal plants.

show abstract

Cropping enhances mycorrhizal benefits to maize in a tropical soil

Cited by 16 publications

References 60 publications

Lights Off for Arbuscular Mycorrhiza: On Its Symbiotic Functioning under Light Deprivation

Lights Off for Arbuscular Mycorrhiza: On Its Symbiotic Functioning under Light Deprivation

How are arbuscular mycorrhizal associations related to maize growth performance during short‐term cover crop rotation?

Effect of Inoculation with Glomus versiforme on Cadmium Accumulation, Antioxidant Activities and Phytochelatins of Solanum photeinocarpum

Contact Info

Product

Resources

About