Aluminum tolerance of wheat cultivars and relation to arbuscular mycorrhizal colonization in a non-limed and limed Andisol

Seguel, Alex; Cumming, Jonathan R.; Cornejo, Pablo; Borie, Fernando

doi:10.1016/j.apsoil.2016.08.014

Cited by 26 publications

(15 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar behavior was reported previously with Lead (Pb) (Vodnik et al, 2008), Zn, Cu (Cornejo et al, 2008), Cd (Gil-Cardeza et al, 2014) and other phytotoxic elements such as Al (Seguel et al, 2015;2016a;2016b). Moreover, high levels of Cu may increase the rate of decomposition of AM fungal structures, resulting in a higher degradation of non-metal adapted fungi (Cornejo et al, 2008), which also explains the increased accumulation of BRSP (Driver et al, 2005).…”

Section: Resultssupporting

confidence: 62%

Contribution of inoculation with arbuscular mycorrhizal fungi to the bioremediation of a copper polluted soil using Oenothera picensis

Cornejo¹,

Meier²,

García³

et al. 2016

J. Soil Sci. Plant Nutr.

Self Cite

View full text Add to dashboard Cite

The Bradford-reactive soil protein (BRSP) fraction includes glomalin, a glycoprotein produced by arbuscular mycorrhizal (AM) fungi able to bind some metals, such as copper (Cu), which could promote the bioremediation of Cu-polluted soils. This study aimed to analyze the Cu-binding capacity of BRSP in Oenothera picensis that was inoculated or not inoculated with AM fungi. O. picensis plants were established in a Cu contaminated sterilized soil and treated with the following: i) uninoculated (-M); ii) inoculated with native AM fungal propagules (+M); or iii) inoculated with a Claroideoglomus claroideum (CC) strain isolated from non-contaminated soil. In each case, five Cu levels were applied to the soil (basal level 497.3 mg Cu kg -1 ): 0 (T1); 75 (T2); 150 (T3); 225 (T4); and 300 mg Cu kg -1 (T5). A high BRSP accumulation in AM inoculated treatments, especially with CC, was observed. A higher Cu-bound-to-BRSP content was found with increasing Cu concentrations, representing up to 20-22% of the total Cu in the soil. Moreover, a higher root Cu concentration in +M was observed. These results suggest a high Cu binding capacity by BRSP, which is a relevant aspect to consider in the design of bioremediation programs together with the selection of endemic metallophytes and AM fungal strains, which are able to produce glomalin at high quantities.

show abstract

Section: Resultssupporting

confidence: 62%

Contribution of inoculation with arbuscular mycorrhizal fungi to the bioremediation of a copper polluted soil using Oenothera picensis

Cornejo¹,

Meier²,

García³

et al. 2016

J. Soil Sci. Plant Nutr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, less attention has been paid to low pH than Al 31 toxicity because acidic soils are mostly associated with increased Al 31 activity. Osorio and Habte (2013) reported that, in an Oxisol at pH 4.9, inoculation with Glomus fistulosum significantly promoted the shoot dry mass of leucaena seedlings with rock phosphate application, mainly due to the enhanced uptake of P. Furthermore, a study of Andisol (pH 4.73) by Seguel et al (2016) demonstrated that mycorrhizal colonization was positively correlated with wheat plant growth but negatively correlated with Al concentration in roots. This indicates a pivotal role for AMF colonization in the optimized adaptation of host plants to acidic soils.…”

Section: Introductionmentioning

confidence: 99%

External hyphae of Rhizophagus irregularis DAOM 197198 are less sensitive to low pH than roots in arbuscular mycorrhizae: evidence from axenic culture system

Wang

Zhang

Yang

et al. 2017

Environ Microbiol Rep

View full text Add to dashboard Cite

The growth of plant roots and arbuscular mycorrhizal fungi (AMF) can be inhibited by low pH; however, it is largely unknown which is more sensitive to low pH. This study aimed to compare the physiological and molecular responses of external hyphae (EH) and roots to low pH in terms of growth, development and functioning. We established AM symbiosis in a two-compartmented system (root compartment, RC; hyphal compartment, HC) using AMF and transformed hairy roots and exposed them to pH 6.5 and/or pH 4.5. The results showed that pH 4.5 significantly decreased root cell viability, while EH at pH 6.5 attenuated the effect. In either RC or HC, pH 4.5 reduced biomass, P content, colonization, ALP activity in roots, and ALP activity and polyphosphate accumulation in EH. GintPT expression in EH was inhibited by pH 4.5 in HC but not in RC. The expression of mycorrhiza-responsive LePTs was significantly reduced by the lower colonization due to decreased pH in either RC or HC, while the expression of non-mycorrhiza-responsive LePTs was not affected. Variation partitioning analysis indicated that EH was less sensitive to low pH than roots. The interactions between roots and EH under low pH stress merit further investigation.

show abstract

“…Therefore, P fertilization is the first option in agricultural management for alleviating Al 3+ toxicity in various crops. The role of P in alleviating Al 3+ toxicity is associated with Al 3+ tolerance by plants and the efficiency in the functional utilization of P, as well as the ratio of Al 3+ to P in the plant tissue . Although several biochemical and morphological mechanisms are involved in controlling plant Al tolerance during Al 3+ toxicity, most of these mechanisms have not been fully elucidated.…”

Section: Resultsmentioning

confidence: 99%

“…Plants differ in their response to Al toxicity when grown in acidic soils, such as the soils found in the extensive areas of allophanic Andisols in southern Chile. This area is essential for supporting the Chilean cereal production industry, but its characteristic soil acidity is one of the main constraints for the production of some of the most important crops, such as wheat . In this regard, the excess of protons (H + ) in acidic soils causes an increase in the availability of phytotoxic Al levels, together with a decrease in the availability of P, Ca, Mg and Mo.…”

Section: Introductionmentioning

confidence: 99%

“…This area is essential for supporting the Chilean cereal production industry, but its characteristic soil acidity is one of the main constraints for the production of some of the most important crops, such as wheat. [6][7][8] In this regard, the excess of protons (H + ) in acidic soils causes an increase in the availability of phytotoxic Al levels, together with a decrease in the availability of P, Ca, Mg and Mo. Therefore, plant roots growing in acidic soils have a greatly reduced capacity for nutrient acquisition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Showing their mettle: extraradical mycelia of arbuscular mycorrhizae form a metal filter to improve host Al tolerance and P nutrition

et al. 2019

Self Cite

View full text Add to dashboard Cite

BACKGROUND New evidence has shown that arbuscular mycorrhizal (AM) fungi can contribute to the aluminum (Al3+) tolerance of host plants growing in acidic soils with phytotoxic levels of Al3+. The aim of this study was to investigate the role of AM fungi isolated from naturally occurring Al3+ acidic soils in conferring host tolerance to Al3+ toxicity in three wheat cultivars differing in Al3+ sensitivity. The experiment was conducted in a soilless substrate (vermiculite/perlite, 2:1 v/v) using two Al3+‐tolerant wheat genotypes and one Al3+‐sensitive wheat genotype. The wheat was colonized with a consortium of AM fungi isolated from an Andisol, with or without Al3+ at a concentration of 200 μmol L−1. RESULTS The response of wheat to Al3+ in the medium was dependent on both the plant genotype and AM colonization. The benefits of the AM fungi to the wheat cultivars included an increased P concentration and relatively low Al3+ accumulation in the plants. This was achieved through two mechanisms. First, the metal‐chelating capacity of the AM fungi was clear in two of the cultivars (‘Tukan’ and ‘Porfiado’), in which the enhanced extraradical mycelium development was able to retain Al3+ in the glomalin and hyphae. Second, the increased AM‐induced acid phosphatase activity in the rhizosphere of the other cultivar (‘Atlas 66’) increased host nutrition possibly by hyphae‐mediated nutrient uptake and glomalin‐related soil protein. CONCLUSION The results suggest that the role of AM fungi in cultivar‐specific Al3+ detoxification can be achieved by increased extraradical mycelial filters and enhanced bioavailability of P in the host rhizosphere. © 2019 Society of Chemical Industry

show abstract

Aluminum tolerance of wheat cultivars and relation to arbuscular mycorrhizal colonization in a non-limed and limed Andisol

Cited by 26 publications

References 62 publications

Contribution of inoculation with arbuscular mycorrhizal fungi to the bioremediation of a copper polluted soil using Oenothera picensis

Contribution of inoculation with arbuscular mycorrhizal fungi to the bioremediation of a copper polluted soil using Oenothera picensis

External hyphae of Rhizophagus irregularis DAOM 197198 are less sensitive to low pH than roots in arbuscular mycorrhizae: evidence from axenic culture system

Showing their mettle: extraradical mycelia of arbuscular mycorrhizae form a metal filter to improve host Al tolerance and P nutrition

Contact Info

Product

Resources

About