Microbial community composition is related to soil biological and chemical properties and bacterial wilt outbreak

Wang, Rui; Zhang, Hongchun; Sun, Liguang; Qi, Gaofu; Shu, Chen; Zhao, Xiuyun

doi:10.1038/s41598-017-00472-6

Cited by 204 publications

(166 citation statements)

References 49 publications

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“…Although European, African and American species of Lupinus are generally considered to be nodulated by slowgrowing rhizobia affiliated to different Bradyrhizobium lineages (see Andrews and Andrews 2017 The ability of Microvirga to nodulate lupines may be related to the soil physicochemical properties where they grow. It is known that biotic, for example, the composition and diversity of the microbial community, and abiotic factors, such as salinity, pH, altitude, nutrient availability, etc., play an important role in the interactions between the two partners (Thrall et al 2011;Lemaire et al 2015Lemaire et al , 2016Wang et al 2017;de Castro-Pires et al 2018). The Microvirga LUP strains were isolated form L. cosentinii grown in alkaline soils (pH 7Á5) of the Maamora forest, which is in line with previous results on Microvirga strains recovered from L. micranthus and L. luteus growing in Tunisian alkalinized soils (Msaddak et al 2017a(Msaddak et al , 2017bRejili et al 2019) and suggests that the soil pH is a key factor for determination of the biogeography of the Microvirga species.…”

Section: Discussionsupporting

confidence: 88%

Microvirgasp. symbiovar mediterranense nodulatesLupinus cosentiniigrown wild in Morocco

et al. 2019

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Aim To analyse the diversity of nodule‐forming bacteria isolated from Lupinus cosentinii naturally grown in the Maamora cork oak forest (Rabat, Morocco). Methods and Results Of the 31 bacterial strains, four were selected based on their REP‐PCR fingerprinting that were studied by sequencing and phylogenetic analysis of their 16S rRNA, gyrB, dnaK, recA and rpoB housekeeping genes as well as the nodC symbiotic gene. The nearly complete 16S rRNA gene sequence of the four representative strains showed that they are related to Tunisian strains of genus Microvirga isolated from L. micranthus with nucleotide identity values ranging from 98·67 to 97·13%. The single and concatenated sequences of the 16S rRNA, gyrB, dnaK, recA and rpoB housekeeping genes indicated that the L. cosentinii‐isolated strains had 99·2–99·9% similarities with the Tunisian L. micranthus microsymbionts. The nodC gene phylogeny revealed that the Moroccan strains clustered in the newly described mediterranense symbiovar, and nodulation tests showed that they nodulated not only L. cosentinii but also L. angustifolius, L. luteus and L. albus. Conclusions To the best of our knowledge, this is the first report concerning the isolation, molecular identification and phylogenetic diversity of L. cosentinii nodule‐forming endosymbionts and of their description as members of the Microvirga genus. Significance and Impact of the Study In this work, we show that Microvirga sp. can be isolated from root nodules of wild‐grown L. cosentinii in Northeast Africa, that selected strains also nodulate L. angustifolius, L. luteus and L. albus, and that they belong to symbiovar mediterranense. In addition, our data support that the ability of Microvirga to nodulate lupines could be related to the soil pH, its geographical distribution being more widespread than expected.

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Section: Discussionsupporting

confidence: 88%

Microvirgasp. symbiovar mediterranense nodulatesLupinus cosentiniigrown wild in Morocco

et al. 2019

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“…Chemical and physical attributes are involved in soil microorganisms development (Borowik & Wyszkowska, 2016; Furtak & Gajda, 2018; Wang et al., 2017). Data enable observe that microorganisms’ activity was more affected positively by soil chemical, than physical attributes, and therefore basal respiration and nodulation were higher in the subsoiled soil that presented improvements in chemical structure.…”

Section: Discussionmentioning

confidence: 99%

Root growth and crop performance of soybean under chemical, physical, and biological changes after subsoiling

et al. 2020

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Chemical, physical and biological soil attributes can facilitate soybean root growth in greater volume and depth in the soil, which can minimize yield reduction caused by water deficit. Soil management can contribute positively or negatively to these soil attributes. The aim of this work was to evaluate the root growth and crop performance of soybean, in response to chemical, physical and biological changes after subsoiling at different depths. At the R5 phenological stage, trenches were made for sampling and soil collection for chemical, physical and biological analysis and root growth was carried out. At V5, V7, R2 and R5 stages, plants were collected to evaluate height, leaf area and dry mass. At V5, stage number and dry mass of the nodules were evaluated. Subsoiling increased pH and Ca, and decreased Al in the soil, resulted in higher relative density and did not affect in mechanical penetration resistance compared to non-subsoiled soil. Basal respiration and soybean nodulation were higher in the subsoiled soil. Up to 15 cm depth, there were 87.91% of the total root dry mass and 78.79% of the total root volume. Initial and final plant growth were the same in subsoiled and non-subsoiled soil. Number of nodules in the subsoiled soil was 28% higher than in the non-subsoiled soil. Under these study conditions, subsoiling provides lower root growth but benefits grain yield.

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“…Previous studies have compared the microbial species abundance and diversity of bacterial wilt disease outbreak in soil samples [16][17][18]. Here, the microbial relative abundances and diversities of SS and CS were determined in addition to the associated soil chemical properties, microbial networks and COG groups with significant differences.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Bacterial Communities in Soil Samples with and without Tomato Bacterial Wilt Caused by Ralstonia solanacearum Species Complex

Zhang

Zhou

et al. 2020

Preprint

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Background: Ralstonia solanacearum is one of the most notorious soil-borne phytopathogens. It causes a severe wilt disease with deadly effects on many economically important crops. The microbita of disease-suppressive soils are thought that they can contribute to the disease resistance of crop plants, thus, to conduct the microbial community and their interaction characteristics between suppressive soil (SS) and conducive soil (CS) will help to understand resistance mechanism. Here, the bacterial community structure, correlation analysis with soil chemical properties, interaction network of SS (nearly no disease in three years), and CS (suffered heavy bacterial wilt disease) were analyzed. Results: Compared with CS, a higher bacterial community diversity index was found in SS , and the relative abundance of main genera Bacillus , Gaiellales , Roseiflexus , Gemmatimonadaceae , Nocardioides , and Anaerolineacear reached significant levels. Redundancy analysis at the genus level indicated that the available phosphate played a key role in the bacterial community distribution, and its role was negatively correlated with soil pH, organic matter content, alkali-hydrolyzable nitrogen, and available potassium contents. Interaction network analysis further demonstrated that greater diversity at the genus level existed in the SS network and formed a stable network. Additionally, the species of Mycobacterium , Cyanobacteria , and Rhodobiaceae are the key components that sustain the network stability. Seven clusters of orthologous groups exhibited significant differences between SS and CS. Moreover, 55 bacterial strains with distinct antagonistic activities to R. solancearum were isolated and identified. Conclusions: Our findings indicate that the bacterial diversity and interaction network differed between the CS and SS samples, providing a good foundation in the study of bacterial wilt.

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Microbial community composition is related to soil biological and chemical properties and bacterial wilt outbreak

Cited by 204 publications

References 49 publications

Microvirgasp. symbiovar mediterranense nodulatesLupinus cosentiniigrown wild in Morocco

Microvirgasp. symbiovar mediterranense nodulatesLupinus cosentiniigrown wild in Morocco

Root growth and crop performance of soybean under chemical, physical, and biological changes after subsoiling

Comparison of Bacterial Communities in Soil Samples with and without Tomato Bacterial Wilt Caused by Ralstonia solanacearum Species Complex

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