Cultivar-specific response of bacterial community to cadmium contamination in the rhizosphere of rice (Oryza sativa L.)

Hou, Dandi; Wang, Runze; Gao, Xiaoyu; Wang, Kai; Zhi, Lin; Ge, Jun; Liu, Ting; Wei, Shizhao; Chen, Weikang; Xie, Ruohan; Yang, Xiaoe; Lu, Lingli; Tian, Shengke

doi:10.1016/j.envpol.2018.04.121

Cited by 76 publications

(15 citation statements)

References 64 publications

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“…It is possible that a higher bacterial α-diversity does not necessarily lead to a lower incidence of plant disease. Several biotic and abiotic factors, including plant species, soil type, and growth stage may have an effect on the α-diversity of the rhizospheric bacterial community [ 31 , 32 ]. Additionally, while thousands of different OTUs may be simultaneously detected in the rhizosphere, only a fraction of them may be involved in disease suppression.…”

Section: Resultsmentioning

confidence: 99%

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

Wang

Zhuang

et al. 2019

Computational and Structural Biotechnology Journal

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The ability of a rhizosphere-derived microbial product (composed of a consortium of a strain of Bacillus subtilis and a strain of Trichoderma harzianum ) to suppress common scab disease in potato caused by Streptomyces spp. was examined over a two-year period. Relative to the condition in which 0 kg·ha −1 of the designated microbial product was applied (control), the disease index decreased by 30.6%–46.1%, and yield increased by 23.0%–32.2% in treatments in which 225 or 300 kg·ha −1 of the microbial product was administered, respectively. The bacterial communities present in the rhizosphere were assessed at an early stage of tuber formation, a time at which tubers are susceptible to common scab. Potato plants in which soils were treated with 225 or 300 kg·ha −1 of the microbial product harbored rhizospheric microbiota with lower α-diversity and an increased relative abundance of taxa representing the beneficial bacteria. In summary, a select microbial product composed of a consortium of Bacillus subtilis and Trichoderma harzianum effectively suppressed common scab disease and increased tuber yield by establishing a high relative abundance of beneficial bacteria in the rhizosphere.

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Section: Resultsmentioning

confidence: 99%

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

Wang

Zhuang

et al. 2019

Computational and Structural Biotechnology Journal

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“…In addition, our results show that some metal elements (such as Ca, Mg, Fe, and Cs) in soil significantly correlated with the bacterial taxa in the Shenmu tiankeng ecosystem (Figure 4B). Previous investigations indicated that heavy metals in soil can alter the microbial community and lead to a change in the microbial community’s structure and a decrease in microbial biomass [44,45,46,47]. For instance, Parcubacteria are negatively correlated with TP, Mg, Fe, and Cs.…”

Section: Discussionmentioning

confidence: 99%

Profiling the Bacterial Diversity in a Typical Karst Tiankeng of China

Dong

et al. 2019

Biomolecules

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While karst tiankengs have a higher capacity to act as safe havens for biodiversity in changing climates, little is known about their soil microorganisms. To fill this gap, we investigate the distribution and driving factors of the bacterial community in karst tiankeng systems. There is a significant difference in the soil characteristics between the inside and the outside of a karst tiankeng. At the karst tiankeng considered in this study, the bacterial composition, in terms of the operational taxonomic unit (OTU), was found to be significantly different in different soil samples, taken from diverse sampling sites within the collapsed doline or the external area, and showed a high habitat heterogeneity. The dominant phylum abundances vary with the sampling sites and have their own indicator taxa from phylum to genus. Unlike the primary controlling factors of plant diversity, the microclimate (soil moisture and temperature), soil pH, and slope dominated the distribution of the bacterial community in karst tiankeng systems. Our results firstly showed the distribution characteristics of bacterial communities and then revealed the importance of microhabitats in predicting the microbial distribution in karst tiankeng systems.

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“…Cultivar dependent Cd sensitivity in tested wheat cultivars under Cd exposure Cultivar-dependent differential Cd tolerance has been reported in various plants such as maize (Akhtar et al, 2017), Amaranthus gangeticus (He et al, 2018), Italian ryegrass (Fang et al, 2017) and rice (Hou et al, 2018). In current study, different Cd tolerance and tissue vulnerability to Cd toxicity in three tested cultivars were unravelled.…”

Section: Discussionmentioning

confidence: 50%

Evaluation of three wheat (Triticum aestivum L.) cultivars as sensitive Cd biomarkers during the seedling stage

Ding

Mubeen

et al. 2020

PeerJ

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Sensitive seedling crops have been developed to monitor Cadmium (Cd) contamination in agricultural soil. In the present study, 18 parameters involving growth conditions and physiological performances were assessed to evaluate Cd-responses of three wheat (Triticum aestivum L.) cultivars, Xihan1 (XH), Longzhong1 (LZ) and Dingfeng16 (DF). Principle component analysis illustrated that Factor 1, representing growth performance, soluble sugar content and catalase activity, responded to the Cd treatments in a dose dependent manner, while Factor 2 represented by chlorophyll content and germinating root growth was mainly dependent on cultivar differences. Higher inhibition rates were observed in growth performance than in physiological responses, with the highest inhibition rates of shoot biomasses (39.6%), root length (58.7%), root tip number (57.8%) and bifurcation number (83.2%), even under the lowest Cd treatment (2.5 mg·L−1). According to the Cd toxicity sensitivity evaluation, DF exerted highest tolerance to Cd stress in root growth while LZ was more sensitive to Cd stress, suggesting LZ as an ideal Cd contaminant biomarker. This study will provide novel insight into the cultivar-dependent response during using wheat seedlings as Cd biomarkers.

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Cultivar-specific response of bacterial community to cadmium contamination in the rhizosphere of rice (Oryza sativa L.)

Cited by 76 publications

References 64 publications

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

Profiling the Bacterial Diversity in a Typical Karst Tiankeng of China

Evaluation of three wheat (Triticum aestivum L.) cultivars as sensitive Cd biomarkers during the seedling stage

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