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1. Rhizobacteria helps to explain the enhanced efficiency of phytoextraction strengthened by Streptomyces pactum

Author:
Linlin Wang; Nina Wang; Di Guo; Zhengzheng Shang; Yiying Zhang; Song Liu; Yuheng Wang
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 73-81
ISSN:
1001-0742
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Acidobacteria; Bacteroidetes; Gemmatimonadetes; Sphingomonas; Streptomyces pactum; Thiobacillus; alkaline phosphatase; cadmium; community structure; humic acids; microbial communities; oxidoreductases; peat; phytoaccumulation; phytomass; plant growth; ribosomal RNA; soil quality; urease; zinc; China;     Show all 23 Subjects
Abstract:
... The ultimate purpose of phytoextraction is not only to remove heavy metals from soil but also to improve soil quality. Here, we evaluated how the joint effect of Streptomyces pactum (strain Act12) and inorganic (Hoagland's solution) and organic (humic acid and peat) nutrients affected the phytoextraction practice of cadmium (Cd) and zinc (Zn) by potherb mustard, and the microbial community composi ...
DOI:
10.1016/j.jes.2022.01.022

2. Chimeric plants favor asynchrony of conditionally rare bacterial species facilitating functional complementarity in rhizosphere

Author:
Yang Ruan; Tingting Wang; Shiwei Guo; Qiwei Huang; Qirong Shen; Ning Ling
Source:
Biology and fertility of soils 2022 v.58 no.4 pp. 459-470
ISSN:
0178-2762
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; plant development; rare species; watermelons;     Show all 5 Subjects
Abstract:
... Rare bacteria in rhizospheres from natural watermelon vs chimeric watermelon were investigated to understand the rare rhizobacteria assembling processes along with plant development and effects of rare species on functional stability. Over 80% of the total OTUs were defined as rare taxa (i.e., transient, permanent, and conditionally rare) in the rhizosphere. Among these three rarities, transient r ...
DOI:
10.1007/s00374-022-01637-w

3. Bacillus subtilis rhizobacteria ameliorate heat stress in the common bean

Author:
Bruna Coelho de Lima; Aurenivia Bonifacio; Francisco de Alcantara Neto; Fabio Fernando Araujo; Ademir Sergio Ferreira Araujo
Source:
Rhizosphere 2022 v.21 pp. 100472
ISSN:
2452-2198
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Bacillus subtilis; Phaseolus vulgaris; beans; biomass; heat stress;     Show all 7 Subjects
Abstract:
... Bacillus subtilis can mitigate crop growth and yield under heat stress. We studied whether these benefits can be reproduced in the common bean (Phaseolus vulgaris L.). We hypothesized that B. subtilis strains AP-3 and AP-12 could improve bean crop performance under heat stress. Heat stress consisted of cultivation at 35 °C compared to pots at 25 °C in controlled environment chambers. Treatments we ...
DOI:
10.1016/j.rhisph.2022.100472

4. Amylase properties and its metal tolerance during rice germination improved by priming with rhizobacteria

Author:
Nawal E. Al-Hazmi; Deyala M. Naguib
Source:
Rhizosphere 2022 v.22 pp. 100518
ISSN:
2452-2198
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Pseudomonas fluorescens; amylases; enzyme kinetics; metal tolerance; pH; rice; seed germination; temperature;     Show all 10 Subjects
Abstract:
... Seed germination is one of the most critical and complex physiological stages in the plant life cycle. It is highly affected by environmental stress. Priming is a promising tool for the improvement of the plant withstanding against different biotic and abiotic. Most studies that deal with the evaluation of the role of priming on germination evaluate the metabolic and biochemical reactions through ...
DOI:
10.1016/j.rhisph.2022.100518

5. Impacts of typical engineering nanomaterials on the response of rhizobacteria communities and rice (Oryza sativa L.) growths in waterlogged antimony-contaminated soils

Author:
Weicheng Cao; Jilai Gong; Guangming Zeng; Meng Qin; Lei Qin; Yiqiu Zhang; Siyuan Fang; Juan Li; Siqun Tang; Zengping Chen
Source:
Journal of hazardous materials 2022 v.430 pp. 128385
ISSN:
0304-3894
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Acidobacteria; Bacteroidetes; Firmicutes; Oryza sativa; biomass; carbon nanotubes; dose response; rice; soil remediation;     Show all 11 Subjects
Abstract:
... The combined eco-risks of Sb (widely presented in soils, especially nearing mining areas) and the engineering nanomaterials (ENMs) (applied in agriculture and soil remediation) still remain uncovered. The current study investigated the impacts of single and combined exposure of CuO, CeO₂ nanoparticles (NPs) and multi-walled carbon nanotube (MWCNTs) with Sb on rice growths and rhizosphere bacterial ...
DOI:
10.1016/j.jhazmat.2022.128385

6. Cultivar-dependent rhizobacteria community and cadmium accumulation in rice: Effects on cadmium availability in soils and iron-plaque formation

Author:
Feng Zhang; Di Peng; Lu Liu; Huidan Jiang; Lianyang Bai
Source:
Journal of environmental sciences (China) 2022 v.116 pp. 90-102
ISSN:
1001-0742
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Geobacter; Massilia; cadmium; cultivars; field experimentation; microbial communities; phosphates; polluted soils; rice; China;     Show all 12 Subjects
Abstract:
... The association between the rhizospheric microbial community and Cd accumulation in rice is poorly understood. A field trial was conducted to investigate the different rhizobacterial communities of two rice cultivars with high Cd accumulation (HA) and low Cd accumulation (LA) at four growth stages. Results showed that the Cd content in the roots of the HA cultivar was 1.23 - 27.53 higher than that ...
DOI:
10.1016/j.jes.2021.08.021

7. The plant microbiota: composition, functions, and engineering

Author:
Matteo Chialva; Luisa Lanfranco; Paola Bonfante
Source:
Current opinion in biotechnology 2022 v.73 pp. 135-142
ISSN:
0958-1669
Subject:
rhizosphere,   etc   ; biotechnology; soil; sustainable agriculture;     Show all 4 Subjects
Abstract:
... Plants growing in nature live in association with beneficial, commensal, and pathogenic microbes, which make up the plant microbiota. The close interaction between plants and their microbiotas has raised fundamental questions about plant responses to these microbes and the identity of the main factors driving microbiota structure, diversity, and function in bulk soil, in the rhizosphere, and in th ...
DOI:
10.1016/j.copbio.2021.07.003

8. Phytoremediation potential evaluation of three rhubarb species and comparative analysis of their rhizosphere characteristics in a Cd- and Pb-contaminated soil

Author:
Jingya Yang; Yingqi Huang; Gaojuan Zhao; Boqun Li; Xiangshi Qin; Jianchu Xu; Xiong Li
Source:
Chemosphere 2022 v.296 pp. 134045
ISSN:
0045-6535
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Rheum officinale; heavy metals; metal tolerance; phytoaccumulation; plant growth; rhubarb; root systems; seed germination;     Show all 10 Subjects
Abstract:
... Screening or breeding exceptional plant species for heavy metal phytoremediation is as important as adopting feasible measures to enhance phytoremediation efficiency, which are largely based on clarifying the mechanisms of heavy metal tolerance and accumulation by plants. In this study, cadmium (Cd) and lead (Pb) tolerance and accumulation characteristics of Rheum officinale, R. palmatum, and R. t ...
DOI:
10.1016/j.chemosphere.2022.134045

9. A novel BC-HMRPGPB-plant system for remediation of low concentration Cd in soil: The process of metal migration and microbial community evolution

Author:
Xin Hu; Fengshu Li; Yaping Pan; Zhe Li; Jinren Lu; Yiming Li; Mutai Bao
Source:
Journal of cleaner production 2022 v.360 pp. 132164
ISSN:
0959-6526
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; adsorption; bioremediation; biosorption; encapsulation; microbial communities; plant growth; risk; sodium alginate; toxic substances; toxicity;     Show all 12 Subjects
Abstract:
... HMs are bioaccumulative and non-biodegradable toxicants and can generate serious health risks to living organisms. The threat of low concentrations of HMs in soils is often overlooked. The BC-HMRPGPB-Plant association can provide a feasible green approach for remediation of HM-contaminated sites with low concentrations. In this study, strain AP-3 showed a high tolerance to several metals and exhib ...
DOI:
10.1016/j.jclepro.2022.132164

10. Diversity and functions of quorum sensing bacteria in the root environment of the Suaeda glauca and Phragmites australis coastal wetlands

Author:
Changfei He; Li Zheng; Wei Gao; Jinfeng Ding; Chengxuan Li; Xiyuan Xu; Bin Han; Qian Li; Shuai Wang
Source:
Environmental science and pollution research 2022 v.29 no.36 pp. 54619-54631
ISSN:
0944-1344
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Phragmites australis; Suaeda glauca; bacterial communities; biofilm; functional diversity; genes; oils; pollution; research; soil; China;     Show all 13 Subjects
Abstract:
... The quorum sensing (QS) system plays a significant role in the bacteria-bacteria or plant-bacteria relationships through signal molecules. However, little is known about the distribution and functional diversity of QS bacteria in the root environment of Suaeda glauca and Phragmites australis in coastal wetlands. We explored the bacterial community by amplicon sequencing and isolated 1050 strains f ...
DOI:
10.1007/s11356-022-19564-6

11. Flow distribution and mass removal in floating treatment wetlands arranged in series and spanning the channel width

Author:
Taís N. Yamasaki; Christopher Walker; Johannes G. Janzen; Heidi Nepf
Source:
Journal of hydro-environment research 2022 v.44 pp. 1-11
ISSN:
1570-6443
Subject:
rhizosphere,   etc   ; absorption; pollutants; research; water quality;     Show all 5 Subjects
Abstract:
... Floating treatment wetlands (FTWs) use plants’ roots for water quality improvement. The plants are supported by a buoyant structure deployed at the water surface. The roots form a porous zone beneath the structure and remove pollutants carried in suspension through filtering, absorption and uptake. This paper used CFD simulation to model FTWs arranged in series and spanning the channel width and t ...
DOI:
10.1016/j.jher.2022.07.001

12. Physiological characteristics and miRNA sequencing of two root zones with contrasting ammonium assimilation patterns in Populus

Author:
Jing Zhou; Jiang ting Wu
Source:
Genes & genomics 2022 v.44 no.1 pp. 39-51
ISSN:
1976-9571
Subject:
rhizosphere,   etc   ; Populus; ammonium; genomics; microRNA; plantlets;     Show all 6 Subjects
Abstract:
... BACKGROUND: The net ammonium fluxes differ among the different root zones of Populus, but the physiological and microRNA regulatory mechanisms are unclear. OBJECTIVE: To elucidate the physiological and miRNA regulatory mechanisms, we investigated the two root zones displaying significant differences in net NH₄⁺ effluxes of P. × canescens. METHODS: Populus plantlets were cultivated with 500 μM NH₄C ...
DOI:
10.1007/s13258-021-01156-2

13. Effect of seed bacterization on peroxidase activity in wheat plants when infected with Bipolaris sorokiniana under high temperature and low moisture

Author:
Oksana M. Minaeva; Tatyana I. Zyubanova; Elena E. Akimova; Natalia N. Tereshchenko
Source:
European journal of plant pathology 2022 v.164 no.1 pp. 79-91
ISSN:
0929-1873
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Bipolaris sorokiniana; Pseudomonas; disease severity; enzyme activity; humidity; hydrogen peroxide; peroxidase; plant pathogens; plant pathology; temperature; wheat;     Show all 13 Subjects
Abstract:
... The ability of rhizosphere bacteria to induce systemic resistance in plants has been widely described in the literature. Various products of rhizobacteria act as signalling molecules, developing stress-like reactions in the plant. At the same time, the accumulation of peroxidase and other reactive oxygen species in the cell plays a major role, and is one of the most important plant defence mechani ...
DOI:
10.1007/s10658-022-02540-8

14. Design and Development of Fertilizer Point-Applied Device in Root-Zone

Author:
Xin Du; Cailing Liu; Meng Jiang; Hao Yuan
Source:
Applied engineering in agriculture 2022 v.38 no.3 pp. 559-571
ISSN:
0883-8542
Subject:
rhizosphere,   etc   ; agriculture; fertilizer rates; fertilizers; plant height;     Show all 5 Subjects
Abstract:
... Root-zone fertilization (RZF) can improve fertilizer utilization, but effective mechanical implementation methods are lacking. This article innovatively proposes an intermittent fertilization device driven by a Geneva mechanism, which can discharge fertilizer into points. The fertilizer discharge uniformity of the fertilizer feeder device was studied. The DEM-MBD method examined the factors affect ...
DOI:
10.13031/aea.14846

15. Rare biosphere in cultivated Panax rhizosphere shows deterministic assembly and cross-plant similarity

Author:
Guozhuang Zhang; Fugang Wei; Zhongjian Chen; Yong Wang; Yuqing Zheng; Lan Wu; Shilin Chen; Linlin Dong
Source:
Ecological indicators 2022 v.142 pp. 109215
ISSN:
1470-160X
Subject:
rhizosphere,   etc   ; biosphere; fungi; microbiome; models; phylogeny; soil;     Show all 7 Subjects
Abstract:
... Revealing the ecological patterns of abundant and rare microbial subcommunities in rhizosphere of cultivated plant is critical for understanding plant–microbe interactions and the formation of functionally important rhizosphere microbiome. Based on rhizodeposit support effects and colonization priority effects, the present study outlined two disparate hypotheses predicting the more deterministic a ...
DOI:
10.1016/j.ecolind.2022.109215

16. Co-transformation of HMs-PAHs in rhizosphere soils and adaptive responses of rhizobacteria during whole growth period of rice (Oryza sativa L.)

Author:
Shengwei Yi; Feng Li; Chen Wu; Fei Ge; Chuang Feng; Ming Zhang; Yun Liu; Hainan Lu
Source:
Journal of environmental sciences (China) 2022 pp. -
ISSN:
1001-0742
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Geobacter; Massilia; Oryza sativa; Sphingomonas; bioavailability; community structure; organic matter; paddies; remediation; rice; soil; tillering; villages; China;     Show all 16 Subjects
Abstract:
... This study investigated the transformations of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in rhizosphere soils and adaptive responses of rhizobacterial community under the real field conditions during four growth stages (e.g., greening, tillering, heading, and maturity) of early rice (Zhongjiazao 17) and late rice (Zhongyou 9918) in Jiangshe village (JSV) and Yangji village (YJ ...
DOI:
10.1016/j.jes.2022.07.017

17. An Isolated Arthrobacter sp. Enhances Rice (Oryza sativa L.) Plant Growth

Author:
Geeta Chhetri; Inhyup Kim; Minchung Kang; Yoonseop So; Jiyoun Kim; Taegun Seo
Source:
Microorganisms 2022 v.10 no.6 pp. -
ISSN:
2076-2607
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Arthrobacter; Oryza sativa; anti-infective agents; biofilm; greenhouses; humans; paddies; plant growth; rice; secondary metabolites; South Korea;     Show all 13 Subjects
Abstract:
... Rice is a symbol of life and a representation of prosperity in South Korea. However, studies on the diversity of the bacterial communities in the rhizosphere of rice plants are limited. In this study, four bundles of root samples were collected from the same rice field located in Goyang, South Korea. These were systematically analyzed to discover the diversity of culturable bacterial communities t ...
DOI:
10.3390/microorganisms10061187

18. The parameters determining hyperaccumulator rhizobacteria diversity depend on the study scale

Author:
Séverine Lopez; Jean Louis Morel; Emile Benizri
Source:
Science of the total environment 2022 v.834 pp. 155274
ISSN:
0048-9697
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; bacterial communities; carbon sequestration; environment; genetic variation; hyperaccumulators; life history; microbiome; nickel; plant physiology; soil; species diversity; temperature;     Show all 14 Subjects
Abstract:
... Soils harbor some of the most diverse microbiomes on Earth and are essential for both nutrient cycling and carbon storage. Numerous parameters, intrinsic to plant physiology, life history and the soil itself, can influence the structure of rhizomicrobial communities. While our knowledge of rhizosphere microbial diversity is increasing, opinion is divided as to whether the factors that most impact ...
DOI:
10.1016/j.scitotenv.2022.155274

19. Contrasting effects of the inoculation time with passenger endophytic Agrobacterium sp.10C2 on the nodule functioning and growth of Medicago truncatula

Author:
Saif-Allah Chihaoui; Fathi Barhoumi; Wael Taamalli; Mohamed Ali Wahab; Ridha Mhamdi; Haythem Mhadhbi
Source:
Rhizosphere 2022 v.22 pp. 100505
ISSN:
2452-2198
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Agrobacterium; Ensifer meliloti; Medicago truncatula; biomass production; endophytes; leghemoglobin; legumes; nitrogenase; pathogens; peroxidase; photosynthesis; phytoremediation; plant growth; sugar content;     Show all 16 Subjects
Abstract:
... Agrobacterium species are one of the most frequently isolated endophytes from root nodules of a wide range of wild and cultivated legumes. Many studies have investigated the role of endophytes in phytoprotection and phytoremediation enhancement. However, their biological significance and their implication in nodule functioning have been scarcely studied, especially, the effect of the inoculation t ...
DOI:
10.1016/j.rhisph.2022.100505

20. Rhizobacteria and arbuscular mycorrhizal fungus presented distinct and specific effects on soybean growth when inoculated with organic compost

Author:
Gabriela Lozano Olivério Salvador; Fabio Fernando Araujo; Arthur Prudêncio de Araujo Pereira; Aurenivia Bonifacio; Ademir Sérgio Ferreira Araujo
Source:
Rhizosphere 2022 v.22 pp. 100513
ISSN:
2452-2198
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Bacillus subtilis; Rhizophagus irregularis; biomass; chlorophyll; composts; growth promotion; inoculum; mycorrhizal fungi; nitrogen; plant growth-promoting rhizobacteria; soil; soybeans;     Show all 14 Subjects
Abstract:
... How organic compost interacts with plant growth-promoting microorganisms and stimulates the growth of crops are not well understood. Thus, organic compost containing the plant growth-promoting rhizobacteria Bacillus subtilis and the arbuscular mycorrhizal fungus Rhizophagus irregularis could be a potential strategy to promote the growth of soybean. We hypothesized that using both B. subtilis and R ...
DOI:
10.1016/j.rhisph.2022.100513