Responses of legumes to rhizobia and arbuscular mycorrhizal fungi: A meta-analysis of potential photosynthate limitation of symbioses

Kaschuk, Glaciela; Leffelaar, P.A.; Giller, Ken E.; Alberton, Odair; Hungría, Mariangela; Kuyper, Thom W.

doi:10.1016/j.soilbio.2009.10.017

Cited by 114 publications

(77 citation statements)

References 17 publications

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“…The results of regression also confirm the close relationship between membrane stability and soluble sugars, the application of growth stimulators improved the osmotic adjustment indices resulting in greater stress tolerance. Such results have been reported in other studies, as well (Kaschuk et al, 2010). Forage yield Forage yield was influenced by water-deficit stress and the inoculation of seeds with growth stimulators (P < 0.05).…”

Section: Compatible Solutessupporting

confidence: 89%

Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress

Zafari

Ebadi

Godehkahriz

2017

Not Bot Horti Agrobo

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Water deficit is one of the most important environmental stresses that adversely affect crop growth and production and mycorrhizal fungi and symbiotic bacteria have important role in resistance to drought stress. The effect of biofertilizers on alfalfa stress tolerance was studied at the greenhouse condition. Treatments comprised three water-deficit stresses (35%, 55% and 75% of field capacity) and four seeds inoculations (Glomus mosseae, Sinorhizobium meliloti, G. mosseae + S. meliloti and non-inoculated). Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively) and osmotic potential (45.84%). The inoculation of seeds increased the capability of the plants in counteracting the stress, so that the production of compatible solutes was increased and the photosynthetic indices, proline, osmotic potential, membrane stability and forage yield were improved by seed inoculation. Mycorrhiza improved photosynthetic indexes and proline, but bacteria had more efficacy on membrane stability and forage yield. However, double inoculation due to the synergistic effect of mycorrhiza and Sinorhizobium, had the greatest effect than Solitary inoculation. Our results suggest that biofertilized alfalfa plants were better adapted than non-biofertilized ones to cope with water deficit.

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Section: Compatible Solutessupporting

confidence: 89%

Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress

Zafari

Ebadi

Godehkahriz

2017

Not Bot Horti Agrobo

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“…The combined sink effect of the host plant roots and nodules can incur a drain of the host C reserves so as to maintain N and P nutrition. This may increase the photosynthetic rate of the host plant (Ainsworth et al 2004;Kaschuk et al 2009Kaschuk et al , 2010aKaschuk et al , 2010b. However, under low-P conditions, the decline in photosynthesis in V. oroboides concurs with the lower investment in belowground growth, as evidenced by the decreased allocation and growth respiration of the root and nodule nutrient-acquiring structures.…”

Section: Discussionmentioning

confidence: 99%

Low-phosphorus conditions affect the nitrogen nutrition and associated carbon costs of two legume tree species from a Mediterranean-type ecosystem

et al. 2014

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Abstract. The role of phosphorus nutrition in two-legume tree species from the Mediterranean-type ecosystem of the Cape Floristic Region (CFR) in South Africa was investigated. There is very little information about the functional adaptations of nitrogen (N) and phosphorus (P) nutrition in these legume trees growing in nutrient-poor soils. Nodulated Virgilia divaricata and V. oroboides tree saplings were grown in sterilised sand and supplied with Long Ashton nutrient solution, which was modified to contain either sufficient-phosphate (500 mM) or low-phosphate (5 mM) nutrient solution for 90 days. During low-P conditions, the growth of V. divaricata was not affected, whereas V. oroboides showed a decrease in growth. The decrease in V. oroboides under low-P conditions was related to the lower P uptake, which resulted in an alteration in belowground biomass allocation, which consequently affected on the N nutrition and carbon (C) cost of growth. In this regard, V. oroboides plants allocated less biomass to roots and nodules, as a proportion of whole plant growth. The impact of this was a decline in N nutrition, growth respiration and photosynthetic costs in V. oroboides. In contrast, V. divaricata maintained its P concentrations, photosynthetic costs and increased its nodule allocation under low-P conditions, to the benefit of N nutrition. The two CFR tree legumes appear to have different adaptations to low-P conditions, which may influence their N and P acquisition in their naturally low-P environment.

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“…This occurs mostly because of the ability of the AM fungi to take up nutrients with low mobility or low concentration within the soil solution and under various stress conditions (Smith and Read 2008). The advantages of AM symbiosis to host plants have been demonstrated extensively in terms of enhancement of plant biomass and nutrient uptake, especially in cereals and legumes (Kaschuk et al 2010;Saia et al 2015a;Pellegrino et al 2015;Bona et al 2016a). In medicinal and aromatic plants (MAPs), most of the information about the effects of AM fungi has been derived from investigations about the family Lamiaceae (Khaosaad et al 2006;Copetta et al 2006;Zeng et al 2013;López-García et al 2014;Bona et al 2016b; Silvia Lazzara and Marcello Militello equally contributed to this work.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi altered the hypericin, pseudohypericin, and hyperforin content in flowers of Hypericum perforatum grown under contrasting P availability in a highly organic substrate

et al. 2016

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St. John's Wort (Hypericum perforatum) is a perennial herb able to produce water-soluble active ingredients (a.i.), mostly in flowers, with a wide range of medicinal and biotechnological uses. However, information about the ability of arbuscular mycorrhizal fungi (AMF) to affect its biomass accumulation, flower production, and concentration of a.i. under contrasting nutrient availability is still scarce. In the present experiment, we evaluated the role of AMF on growth, flower production, and concentration of bioactive secondary metabolites (hypericin, pseudohypericin, and hyperforin) of H. perforatum under contrasting P availability. AMF stimulated the production of aboveground biomass under low P conditions and increased the production of root biomass. AMF almost halved the number of flowers per plant by means of a reduction of the number of flower-bearing stems per plant under high P availability and through a lower number of flowers per stem in the low-P treatment. Flower hyperforin concentration was 17.5% lower in mycorrhizal than in non-mycorrhizal plants. On the contrary, pseudohypericin and hypericin concentrations increased by 166.8 and 279.2%, respectively, with AMF under low P availability, whereas no effect of AMF was found under high P availability. These results have implications for modulating the secondary metabolite production of H. perforatum. However, further studies are needed to evaluate the competition for photosynthates between AMF and flowers at different nutrient availabilities for both plant and AM fungus.

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Responses of legumes to rhizobia and arbuscular mycorrhizal fungi: A meta-analysis of potential photosynthate limitation of symbioses

Cited by 114 publications

References 17 publications

Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress

Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress

Low-phosphorus conditions affect the nitrogen nutrition and associated carbon costs of two legume tree species from a Mediterranean-type ecosystem

Arbuscular mycorrhizal fungi altered the hypericin, pseudohypericin, and hyperforin content in flowers of Hypericum perforatum grown under contrasting P availability in a highly organic substrate

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