Influence of steam sterilisation on soil chemical characteristics, trace metals and clay mineralogy

Egli, Markus; Mirabella, Aldo; Kägi, B; Tomasone, R.; Colorio, G

doi:10.1016/j.geoderma.2005.03.017

Cited by 34 publications

(23 citation statements)

References 26 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Egli et al. (2006) reported a slight decrease in weakly bound Cd (difference between the NH 4 OAc‐EDTA‐extractable and NaNO 3 ‐soluble forms) after steam sterilization, whereas we found that the amount of the weakly bound form was similar to the amounts of the dilute‐acid‐soluble and organically bound forms.…”

Section: Resultscontrasting

confidence: 60%

Effects of sterilization on the chemical forms of heavy metals in soils

Suda

Makino

Maejima

et al. 2009

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

We used sequential extraction to investigate changes in the amounts of six chemical forms of manganese, cobalt and cadmium in soil samples after chloroform fumigation. The six forms were designated as follows: exchangeable, dilute-acid-soluble, manganese-oxide-occluded, organically bound, iron-oxide-occluded and residual. For all three metals, the decreases in the amounts of manganese-oxide-occluded forms were equivalent to the sum of the increases in the amounts of exchangeable and dilute-acid-soluble forms. The amounts of the other three forms did not change significantly after fumigation. These results indicate that some of the cobalt and cadmium in the manganese oxides was converted into exchangeable and dilute-acid-soluble forms, which suggests that soil sterilization may increase the availability of these heavy metals to plants.

show abstract

Section: Resultscontrasting

confidence: 60%

Effects of sterilization on the chemical forms of heavy metals in soils

Suda

Makino

Maejima

et al. 2009

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

show abstract

“…With sterilization, microbes that consume root exudates were eliminated, presumably resulting in greater availability of root exudates than in natural soil. Sterilization can also alter the components of soil solution, including the physicochemical characteristics (Egli et al, 2006;Dao, 2014;Mahmood et al, 2014). Studies showed that autoclaving can increase soluble organic matter as well as a small increase in soil pH (Berns et al, 2008;Liegel, 1986).…”

Section: Discussionmentioning

confidence: 99%

Influence of Root Exudates and Soil on Attachment of Pasteuria penetrans to Meloidogyne arenaria

Liu

Timper²,

et al. 2017

Journal of Nematology

View full text Add to dashboard Cite

Abstract:The bacterium Pasteuria penetrans is a parasite of root-knot nematodes (Meloidogyne spp.). Endospores of P. penetrans attach to the cuticle of second-stage juveniles (J2) and subsequently sterilize infected females. When encumbered by large numbers of spores, juveniles are less mobile and their ability to infect roots is reduced. This study looked at different factors that influence spore attachment of P. penetrans to the root-knot nematode Meloidogyne arenaria. Pretreatment of J2 with root exudates of eggplant (Solanum melongena cv. Black beauty) reduced spore attachment compared with pretreatment with phosphate-buffered saline (PBS), suggesting that the nematode surface coat was altered or the spore recognition domains on the nematode surface were blocked. Spore attachment was equally reduced following exposure to root exudates from both host and nonhost plants for M. arenaria, indicating a common signal that affects spore attachment. Although phytohormones have been shown to influence the lipophilicity of the nematode surface coat, auxins and kinetins did not affect spore attachment compared with PBS. Root exudates reduced spore attachment more in sterilized soil than in natural soil. Sterilization may have eliminated microbes that consume root exudates, or altered the chemical components of the soil solution or root exudates. Root exudates caused a greater decrease in spore attachment in loamy sand than in a sandy loam soil. The sandy loam had higher clay content than the loamy sand, which may have resulted in more adsorption of compounds in the root exudates that affect spore attachment. The components of the root exudates could have also been modified by soil type. The results of this study demonstrate that root exudates can decrease the attachment of P. penetrans endospores to root-knot nematodes, indicating that when these nematodes enter the root zone their susceptibility to spore attachment may decrease.

show abstract

“…These authors found 3e4% of added 36 Cl recovered as bound to humic substances in non sterile soil and around 0.3e1% in sterilized soils. However, irradiation and soil heating can affect some physicochemical properties of the soil (Egli et al, 2006), especially ammonium and nitrate contents (McNamara et al, 2003). Alteration of the aggregate state of the soil leading to a greater surface area, changes in soil organic matter structure and increase of dissolved organic matter due to microbial cell lysis and degradation of organic matter were also reported for gamma irradiated and autoclaved soils (Berns et al, 2008).…”

Section: Organically Bound Chlorine Formed During Biotic Incubationmentioning

confidence: 99%

Contribution of microbial activity to formation of organically bound chlorine during batch incubation of forest soil using 37Cl as a tracer

Osswald

Poszwa

Bueno

et al. 2016

Soil Biology and Biochemistry

View full text Add to dashboard Cite

Influence of steam sterilisation on soil chemical characteristics, trace metals and clay mineralogy

Cited by 34 publications

References 26 publications

Effects of sterilization on the chemical forms of heavy metals in soils

Effects of sterilization on the chemical forms of heavy metals in soils

Influence of Root Exudates and Soil on Attachment of Pasteuria penetrans to Meloidogyne arenaria

Contribution of microbial activity to formation of organically bound chlorine during batch incubation of forest soil using 37Cl as a tracer

Contact Info

Product

Resources

About