Soil phosphorus depletion  capacity of arbuscular mycorrhizae formed by maize hybrids

Liu, A.; Hamel, Chantal; Begna, Sultan; L., B.; Smith, Donald L.

doi:10.4141/s02-037

Cited by 9 publications

(14 citation statements)

References 35 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Experiment 2, the M ) P treatment had the highest density of external hyphae (particularly in the 10-16, 16-22 and 22-28 cm layers) compared with the NM ) P treatment. The increased soil P had an inhibitory effect on development of external hyphae, as found by others (Liu et al, 2003). The external hyphae in NM cores in Experiment 2 are likely to be from dead or saprophytic fungi (Drew, 2002;Smith et al, 2004) because there was no AM fungal colonization.…”

Section: Discussionmentioning

confidence: 74%

“…The contribution of AM hyphae to P uptake is variable. Examples include 13-20% in Zea mays (Kothari et al, 1990), more than 75% in Trifolium repens (Li et al, 1991), and up to 100% in Linum usitatissimum, Lycopersicon esculentum and Medicago truncatula (Smith et al, 2003). We hypothesize that these effects on P capture could reduce P flow-through in soil profiles.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Influence of Arbuscular Mycorrhizal (AM) Symbiosis on Phosphorus Leaching through Soil Cores

et al. 2005

View full text Add to dashboard Cite

Two experiments with soil cores were carried out to investigate the effects of arbuscular mycorrhizal (AM) fungal colonization on mobility of phosphorus (P) during leaching of repacked columns of a soil with a loamy sand texture. Trifolium subterraneum plants inoculated with an AM fungus or not inoculated were grown in cores with low or high P concentrations for 8 or 10 weeks in the glasshouse. Cores were then irrigated with 2500 mL water and the leachate collected. Plant growth and the amounts of P removed by plants, remaining in soil as available P and removed dissolved in leachate were measured. Mycorrhizal fungal colonization and development of external hyphae were also determined. Inoculation and/or P application significantly increased plant growth and plant P removal and decreased P leaching. In low P soils AM fungal colonization significantly increased plant P uptake and decreased soil available P and total dissolved P in leachates. Lower P leaching from cores with AM plants under low P conditions was related to enhancement of plant growth and to scavenging and removal of P from the soil by roots and/or external hyphae. When P was applied AM effects were not observed and available P remaining in the soil after leaching was much higher, regardless of AM fungal colonization.

show abstract

Section: Discussionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 96%

Influence of Arbuscular Mycorrhizal (AM) Symbiosis on Phosphorus Leaching through Soil Cores

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Our previous greenhouse experiment in which an arbuscular mycorrhizal fungus was inoculated into a sterilized soil also show that the highly mycorrhizal dependent hybrid, LNS, when inoculated with AMF, can reduce soil extractable P more effectively than non-mycorrhizal plants, under low soil P conditions (Liu et al 2003).…”

Section: Discussionmentioning

confidence: 82%

Reduction of the available phosphorus pool in field soils growing maize genotypes with extensive mycorrhizal development

Liu¹,

Hamel²,

Elmi³

et al. 2003

Can. J. Plant Sci.

Self Cite

View full text Add to dashboard Cite

. 2003. Reduction of the available phosphorus pool in field soils growing maize genotypes with extensive mycorrhizal development. Can. J. Plant Sci. 83: 737-744. Arbuscular mycorrhizal fungi (AMF) have a large enhancing effect on the P uptake capacity of host plants, which could make possible the production of high crop yields on soil with reduced level of available P, or could help reduce the P level in rich soils, thereby reducing the risk of P loss to the environment. A field experiment was conducted in Ste-Anne-de-Bellevue, Quebec, Canada, on a loamy sand in 1997 and a fine sandy loam in 1998 to assess the impact of indigenous AMF-maize hybrid combinations on soil available P level. The experiment had three factors organized in a split-split plot design. There were two soil fumigation levels (fumigated and non-fumigated) randomized in the main plots, three P fertilizer rates (0, 60, and 120 kg ha -1 ) randomized in the sub-plots and three maize (Zea mays L.) hybrids with contrasting genotypes [two newly developed leafy hybrids, Leafy normal stature (LNS) and Leafy reduced stature (LRS), and a commercial hybrid, Pioneer 3979 (P3979)], which were randomized in the sub-sub-plots. Soil extractable P, plant P content, plant dry mass, root colonization with AMF and extraradical hyphae were determined at the 6-leaf, 10-leaf, tasselling and silking stages of maize, and grain yield and total P in maize were determined at harvest. Soil fumigation to reduce AMF and P fertilization reduced the amount of indigenous mycorrhizal development in maize hybrids. The growth of LNS, the most mycorrhizae-dependent hybrid, was more supressed by fumigation than the growth of the other two hybrids. When the soil P level was low, plant dry mass, grain yield and total P content of LNS were higher in the non-fumigated plots than in the fumigated plots. Fumigation had a significant but smaller influence on soil extractable P level than on plant P uptake and growth. Soil extractable P was lower in non-fumigated plots than in fumigated plots from silking to the end of the growing season in 1997, only in non-fertilized plots growing LNS. Extraradical hyphae density was positively correlated with maize P uptake and negatively correlated with soil extractable P. This suggested that soil extractable P can be reduced through AMF-enhanced plant P uptake when soil available P conditions and host plant genotype are favourable to mycorrhizal development, and when P uptake enhancement is large.Key words: Arbuscular mycorrhizal fungi, maize hybrids, soil extractable P, P uptake, extraradical hyphae, root colonization, mycorrhizal dependency Liu, A., Hamel, C., Elmi, A. A., Zhang, T. et Smith, D. L. 2003. Baisse de la réserve de phosphore disponible dans le sol par la culture de variétés de maïs à fort développement de mycorhizes. Can. J. Plant Sci. 83: 737-744. Les mycorhizes à arbuscules (MA) favorisent considérablement l'absorption de P par la plante hôte, ce qui pourrait conduire à un rendement élevé des cultures sur les terres carencées en P ass...

show abstract

“…Very few studies tested the impact of varietal diversity within a crop species on soil biological communities. However, a few studies demonstrated that crop varietal interactions with soil biota were plausible, for example, those that found higher response of local maize landraces and older varieties to mycorrhizal symbionts than from modern varieties [209][210][211].…”

Section: Of 28mentioning

confidence: 99%

Toward the Integrated Framework Analysis of Linkages among Agrobiodiversity, Livelihood Diversification, Ecological Systems, and Sustainability amid Global Change

Zimmerer

Vanek

2016

Land

View full text Add to dashboard Cite

Scientific and policy interest in the biological diversity of agriculture (agrobiodiversity) is expanding amid global socioeconomic and environmental changes and sustainability interests. The majority of global agrobiodiversity is produced in smallholder food-growing. We use meta-analyses in an integrated framework to examine the interactions of smallholder agrobiodiversity with: (1) livelihood processes, especially migration, including impacts on agrobiodiversity as well as the interconnected resource systems of soil, water, and uncultivated habitats; and (2) plant-soil ecological systems. We hypothesize these interactions depend on: (1) scope of livelihood diversification and type resource system; and (2) plant residues and above-/belowground component ecological specificity. Findings show: (1) livelihood diversification is linked to varied environmental factors that range from rampant degradation to enhancing sustainability; and (2) significant ecological coupling of aboveground and soil agrobiodiversity (AGSOBIO assemblages). The environmental impacts of livelihood interactions correspond to variation of diversification (migration, on-farm diversification) and resource system (i.e., agrobiodiversity per se, soil, water). Our findings also reveal mutually dependent interactions of aboveground and soil agrobiodiversity. Results identify livelihood diversification-induced reduction of environmental resource quality with lagged agrobiodiversity declines as a potentially major avenue of global change. Our contribution re-frames livelihood interactions to include both agrobiodiversity and ecological systems. We discuss this integrated social-environmental re-framing through the proposed spatial geographic schema of regional agri-food spaces with distinctive matrices of livelihood strategies and relations to biodiversity and resources. This re-framing can be used to integrate livelihood, agrobiodiversity, and ecological analysis and to guide policy and scientific approaches for sustainability in agriculture and food-growing.

show abstract

Soil phosphorus depletion capacity of arbuscular mycorrhizae formed by maize hybrids

Cited by 9 publications

References 35 publications

Influence of Arbuscular Mycorrhizal (AM) Symbiosis on Phosphorus Leaching through Soil Cores

Influence of Arbuscular Mycorrhizal (AM) Symbiosis on Phosphorus Leaching through Soil Cores

Reduction of the available phosphorus pool in field soils growing maize genotypes with extensive mycorrhizal development

Toward the Integrated Framework Analysis of Linkages among Agrobiodiversity, Livelihood Diversification, Ecological Systems, and Sustainability amid Global Change

Contact Info

Product

Resources

About