Arbuscular mycorrhizal colonization of halophytes in Central European salt marshes

Hildebrandt, U.; Janetta, Katharina; Ouziad, Fouad; Renne, Bettina; Nawrath, Kerstin; Bothe, Hermann

doi:10.1007/s005720000074

Cited by 131 publications

(110 citation statements)

References 29 publications

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“…In a different pathway of decay, other Basidiomycotina (i.e., white-rot fungi) simultaneously decompose cellulose and lignin using free radical attack that can break a variety of bonds in the large phenylpropanoid heteropolymer (21). Wetland systems, which are important transitional zones between terrestrial and aquatic ecosystems, have marine fungi that are important in decomposing vascular plant materials (22) (Fig. 1).…”

Section: Evolution Of Land Plants and Theirmentioning

confidence: 99%

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

Bianchi

2011

Proc. Natl. Acad. Sci. U.S.A.

659

500

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One of the major conundrums in oceanography for the past 20 y has been that, although the total flux of dissolved organic carbon (OC; DOC) discharged annually to the global ocean can account for the turnover time of all oceanic DOC (ca. 4,000–6,000 y), chemical biomarker and stable isotopic data indicate that there is very little terrestrially derived OC (TerrOC) in the global ocean. Similarly, it has been estimated that only 30% of the TerrOC buried in marine sediments is of terrestrial origin in muddy deltaic regions with high sedimentation rates. If vascular plant material—assumed to be highly resistant to decay—makes up much of the DOC and particulate OC of riverine OC (along with soil OC), why do we not see more TerrOC in coastal and oceanic waters and sediments? An explanation for this “missing” TerrOC in the ocean is critical in our understanding of the global carbon cycle. Here, I consider the origin of vascular plants, the major component of TerrOC, and how their appearance affected the overall cycling of OC on land. I also examine the role vascular plant material plays in soil OC, inland aquatic ecosystems, and the ocean, and how our understanding of TerrOC and “priming” processes in these natural systems has gained considerable interests in the terrestrial literature, but has largely been ignored in the aquatic sciences. Finally, I close by postulating that priming is in fact an important process that needs to be incorporated into global carbon models in the context of climate change.

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Section: Evolution Of Land Plants and Theirmentioning

confidence: 99%

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

Bianchi

2011

Proc. Natl. Acad. Sci. U.S.A.

659

500

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“…This fact can be justified as follows: such symbioses may cause hydrogen (H) pumps that generate the driving force for increasing the value of the K/Na ratio which enhance the plant salinity tolerance (Rabie and Almadini 2005). In addition, AMF may also increase plant salinity tolerance by increasing mineral nutrition acquisition (Cordovilla et al 1995), improving rhizospheric conditions (Linderman 1994), enhancing water potential (Hildebrandt et al 2001;Marulanda et al 2003), altering physiological and biochemical properties of the host plants (Smith and Read 1997), and enhancing host physiological processes such as increasing the carbon dioxide exchange rate, transpiration, stomatal conductance, root hydraulic conductivity and water use efficiency (Ruiz-Lozano et al 1996;Smith and Read 1997;Al-Karaki et al 2001).…”

Section: Discussion Nutrientsmentioning

confidence: 99%

Co-inoculations of arbuscular mycorrhizal fungi and rhizobia under salinity in alfalfa

Ashrafi

Zahedi

Razmjoo

2014

Soil Science and Plant Nutrition

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Alfalfa (Medicago sativa L.) is cultivated in arid and semi-arid regions where salinity is one of the main limiting factors for its production. Thus, this experiment was conducted to evaluate the efficacy of arbuscular mycorrhizal fungus (AMF), Glomus mosseae, alfalfa rhizobia Sinorhizobium meliloti (R) seed inoculation in the development of salinity tolerance of different alfalfa cultivars (Rehnani, Pioneer and Bami) under a variety of salinity levels. The results revealed that under non-stress condition, root mycorrhizal infection, nodulation (the number and weight of nodules per plant), potassium (K), calcium (Ca), phosphorus (P), zinc (Zn), copper (Cu) and magnesium (Mg) contents of the root and shoot, the value of the K/ Na ratio, protein [calculated from the nitrogen (N) content] and proline contents of the shoot and the alfalfa yield were found to be the highest while Na contents of the root and shoot were seen to be the lowest when seeds were double inoculated followed by mycorrhizae, rhizobium and control treatments, respectively. Similarly, under salinity condition, the greatest amounts of mycorrhizal infection, nodulation, root and shoot P contents, the value of K/Na ratio, the shoot proline content and the root Ca content were enhanced with the least amount of leaf Na content related to the cases of seeds which were double inoculated, followed by mycorrhizae, rhizobium and control treatments respectively. The results suggested that inoculation of alfalfa seed with AMF or R, especially double inoculation, causes a considerable increase in alfalfa yield under both saline and non-saline conditions by increasing colonization, nodulation and nutrient uptake.

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“…Although spore germination, hyphal growth and root colonisation of arbuscular mycorrhizal (AM) fungi is inhibited by high salt concentrations (Juniper and Abbott 1993;Juniper and Abbott 2006), plants in saline habitats can be highly colonised. The roots of, for example, sea aster (Aster tripolium) in marsh lands appeared to be fully colonised by AM fungal structures (Hildebrandt et al 2001), but also plants from other saline ecosystems such as mangroves, in a river delta or in a desert riparian forest were colonised (Sengupta and Chaudhuri 2002;Wang et al 2004;Yang et al 2008). A survey along a salt gradient showed a negative correlation between salt concentrations and mycorrhization of roots of the saltbush Atriplex spp.…”

Section: Interaction Of Micro-organisms With Host Plantsmentioning

confidence: 99%

“…Another factor that has to be taken into account in such habitats is drought, which can be more important than salt for the abundance of AM fungi in halophytes (Füzy et al 2008). Attempts to identify the AM fungal species associated with plants in saline habitats revealed that at least in Europe, most isolates belong to the Glomus geosporum/Glomus caledonium cluster (Hildebrandt et al 2001;Landwehr et al 2002;Sonjak et al 2009). In addition to arbuscular mycorrhiza, some papers report the occurrence of so-called dark septate endophytes (DSEs).…”

Section: Interaction Of Micro-organisms With Host Plantsmentioning

confidence: 99%

Properties of the halophyte microbiome and their implications for plant salt tolerance

Ruppel

Franken

Witzel

2013

Functional Plant Biol.

138

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Abstract. Saline habitats cover a wide area of our planet and halophytes (plants growing naturally in saline soils) are increasingly used for human benefits. Beside their genetic and physiological adaptations to salt, complex ecological processes affect the salinity tolerance of halophytes. Hence, prokaryotes and fungi inhabiting roots and leaves can contribute significantly to plant performance. Members of the two prokaryotic domains Bacteria and Archaea, as well as of the fungal kingdom are known to be able to adapt to a range of changes in external osmolarity. Shifts in the microbial community composition with increasing soil salinity have been suggested and research in functional interactions between plants and micro-organisms contributing to salt stress tolerance is gaining interest. Among others, microbial biosynthesis of polymers, exopolysaccharides, phytohormones and phytohormones-degrading enzymes could be involved.

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Arbuscular mycorrhizal colonization of halophytes in Central European salt marshes

Cited by 131 publications

References 29 publications

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

Co-inoculations of arbuscular mycorrhizal fungi and rhizobia under salinity in alfalfa

Properties of the halophyte microbiome and their implications for plant salt tolerance

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