Using arbuscular mycorrhiza to reduce the stressful effects of soil compaction on corn (Zea mays L.) growth

Miransari, Mohammad; Bahrami, H A; Rejali, Farhad; Malakouti, M. J.; Torabi, Hossein

doi:10.1016/j.soilbio.2007.02.017

Cited by 120 publications

(71 citation statements)

References 58 publications

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“…This can significantly enhance the absorbing capacity of the host plant roots. It has also been indicated that AM fungi may behave more effectively with increased stress level (Miransari et al 2007(Miransari et al , 2008, which is somehow in accordance with the results of this experiment. AM fungi can substantially enhance the uptake of different nutrients under different conditions, because of their extensive network of hypha and production of different enzymes such as phosphatase, enhancing the solubility of nutrients including P and the less mobile micronutrients (Marschner and Dell 1994;Miransari et al 2009a, b).…”

Section: Discussionsupporting

confidence: 92%

“…AM fungi are able to enhance plant P uptake, which can contribute to the production of energy in the plant. In addition P can also substantially increase root growth, which can improve plant growth under stress by enhancing water and nutrient uptake (Miransari et al 2007(Miransari et al , 2008(Miransari et al , 2009a. When conditions are unfavorable to plant growth, for example under high level of drought stress, the host plant may not be able to develop a symbiosis with AM fungi, as the plant prefer to spend its energy to alleviate the stress rather than developing a symbiosis with AM fungi (Miransari et al 2007(Miransari et al , 2008.…”

Section: Discussionmentioning

confidence: 99%

“…In addition P can also substantially increase root growth, which can improve plant growth under stress by enhancing water and nutrient uptake (Miransari et al 2007(Miransari et al , 2008(Miransari et al , 2009a. When conditions are unfavorable to plant growth, for example under high level of drought stress, the host plant may not be able to develop a symbiosis with AM fungi, as the plant prefer to spend its energy to alleviate the stress rather than developing a symbiosis with AM fungi (Miransari et al 2007(Miransari et al , 2008. Zn is a necessary micronutrient for plant growth as it is involved in the structure of many plant enzymes including the antioxidant enzymes, which can help the plant to alleviate different stresses (for example by maintaining chloroplast and mitochondria membranes) through degrading different unfavorite oxidative radicals, produced under stress.…”

Section: Discussionmentioning

confidence: 99%

“…The mycorrhizal inoculum was produced over a 4-month period on sorghum roots under greenhouse conditions using sterilized sand (Miransari et al 2007(Miransari et al , 2008. During the inoculum production, plants were supplied with their nutrient requirements and were irrigated until flowering.…”

Section: Methodsmentioning

confidence: 99%

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Yield and yield components of hybrid corn (Zea mays L.) as affected by mycorrhizal symbiosis and zinc sulfate under drought stress

Sajedi

Ardakani

Rejali³

et al. 2010

Physiol Mol Biol Plants

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With respect to the significance of improving hybrid corn performance under stress, this experiment was conducted at the Islamic Azad University, Arak Branch, Iran. A complete randomized block design with three levels of irrigations (at 100%, 75% and 50% crop water requirement), two levels of arbuscular mycorrhizal (AM) fungi (Glumus intraradisis) (including control), and three levels of zinc (Zn) sulfate (0, 25 and 45 kg ha −1 ), was performed. Results of the 2-year experiments indicated that irrigation treatment significantly affected corn yield and its components at P=1%. AM fungi and increasing Zn levels also resulted in similar effects on corn growth and production. Although AM fungi did not significantly affect corn growth at the non-stressed irrigation treatment, at moderate drought stress AM fungi significantly enhanced corn quality and yield relative to the control treatment. The combined effects of AM fungi and Zn sulfate at 45 kg haapplication significantly affected corn growth and production. In addition, the tripartite treatments significantly enhanced corn yield at P=1%. Effects of Zn and AM fungi on plant growth under drought stress is affected by the stress level.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Yield and yield components of hybrid corn (Zea mays L.) as affected by mycorrhizal symbiosis and zinc sulfate under drought stress

Sajedi

Ardakani

Rejali³

et al. 2010

Physiol Mol Biol Plants

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“…Soil physical differences such as soil texture and bulk density may affect soil microbial activity, especially in the rhizosphere (Dijkstra and Cheng 2007;Miransari and Smith 2007;Miransari et al , 2008. In addition, different soil types affect plant growth and hence, their root exudates, which influence microbial activity including their nod gene activation by root exudates.…”

Section: Genistein (Mm) Leafmentioning

confidence: 99%

Using signal molecule genistein to alleviate the stress of suboptimal root zone temperature on soybean-Bradyrhizobium symbiosis under different soil textures

Miransari

Smith

2008

TJPI

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Suboptimal root zone temperatures (RZTs) (below 258C) in Canada until July may adversely affect the secretion of interorganismal signal molecules such as genistein by soybean and hence, the soybean-Bradyrhizobium symbiosis. We also proposed for the first time that soil texture might play a role in these biochemical communications. Soybean plants, planted in undisturbed soil samples (with sandy, loamy and clay textures), collected from the field, were subjected to three different soil temperatures (14, 19 and 248C). Bradyrhizobium japonicum (strain 532C) inocula, preincubated with four levels of genistein (0, 5, 10 and 20 mM), were used to inoculate the plants. The experiment was conducted at the research greenhouse of Macdonald Campus, McGill University, Canada. The effects of genistein 5 and 20 mM on soybean nodulation and growth were significant at 148C. As genistein was more effective in loamy and clay soils, soil texture may also be a determining factor in the biochemical communications between B. japonicum and soybean.

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Defoliation and arbuscular mycorrhizal fungi shape plant communities in overgrazed semiarid grasslands

Yang

Shen

et al. 2018

Ecology

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Overgrazing substantially contributes to global grassland degradation by decreasing plant community productivity and diversity through trampling, defoliation, and removal of nutrients. Arbuscular mycorrhizal (AM) fungi also play a critical role in plant community diversity, composition, and primary productivity, maintaining ecosystem functions. However, interactions between grazing disturbances, such as trampling and defoliation, and AM fungi in grassland communities are not well known. We examined influences of trampling, defoliation, and AM fungi on semiarid grassland plant community composition for 3 yr, by comparing all combinations of these factors. Benomyl fungicide was applied to reduce AM fungal abundance. Overgrazing typically resulted in reduced dominance of Stipa Krylovii, contributing to degradation of typical steppe grasslands. Our results indicated trampling generally had little effect on plant community composition, unless combined with defoliation or AM fungal suppression. Defoliation was the main component of grazing that promoted dominance of Potentilla acaulis over Stipa krylovii and Artemisia frigida, presumably by alleviating light limitation. In non-defoliated plots, AM fungi promoted A. frigida, with a concomitant reduction in S. krylovii growth compared to corresponding AM suppressed plots. Our results indicate AM fungi and defoliation jointly suppress S. krylovii biomass; however, prolonged defoliation weakens mycorrhizal influence on plant community composition. These findings give new insight into dominant plant species shifts in degraded semiarid grasslands.

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Using arbuscular mycorrhiza to reduce the stressful effects of soil compaction on corn (Zea mays L.) growth

Cited by 120 publications

References 58 publications

Yield and yield components of hybrid corn (Zea mays L.) as affected by mycorrhizal symbiosis and zinc sulfate under drought stress

Yield and yield components of hybrid corn (Zea mays L.) as affected by mycorrhizal symbiosis and zinc sulfate under drought stress

Using signal molecule genistein to alleviate the stress of suboptimal root zone temperature on soybean-Bradyrhizobium symbiosis under different soil textures

Defoliation and arbuscular mycorrhizal fungi shape plant communities in overgrazed semiarid grasslands

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