Rhizosphere: its structure, bacterial diversity and significance

Prashar, Pratibha; Kapoor, Neera; Sachdeva, Sarita

doi:10.1007/s11157-013-9317-z

Cited by 275 publications

(141 citation statements)

References 109 publications

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“…As a highly competitive environment, the rhizosphere is a nitrogen-limited niche, that renders those organisms that are able to capture gaseous nitrogen highly adapted to becoming established and thrive in this niche (Raymond et al, 2004). The availability of nutrients in the rhizosphere results in its colonization by a more abundant microbial community than that found in the bulk soil (Philippot et al, 2013;Prashar et al, 2014).…”

Section: Plant Selection For the Rhizosphere Microbial Communitiesmentioning

confidence: 99%

“…In summary, taking these effects together, plants have evolved to allow the rhizosphere to attract specific microbes, which support plant development (Mendes et al, 2011;Prashar et al, 2014). This concept is based on the fact that local conditions found in the rhizosphere are interpreted as being optimum environments for the replication of organisms that present features related to the promotion of plant growth, such as uptake of nutrients from non-trivial sources (nitrogen fixation, phosphorus solubilization) or inhibition of pathogen growth (Mendes et al, 2011).…”

Section: Plant Selection For the Rhizosphere Microbial Communitiesmentioning

confidence: 99%

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Exploring interactions of plant microbiomes

Andreote

Gumiere

Durrer

2014

Sci. agric. (Piracicaba, Braz.)

153

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A plethora of microbial cells is present in every gram of soil, and microbes are found extensively in plant and animal tissues. The mechanisms governed by microorganisms in the regulation of physiological processes of their hosts have been extensively studied in the light of recent findings on microbiomes. In plants, the components of these microbiomes may form distinct communities, such as those inhabiting the plant rhizosphere, the endosphere and the phyllosphere. In each of these niches, the "microbial tissue" is established by, and responds to, specific selective pressures. Although there is no clear picture of the overall role of the plant microbiome, there is substantial evidence that these communities are involved in disease control, enhance nutrient acquisition, and affect stress tolerance. In this review, we first summarize features of microbial communities that compose the plant microbiome and further present a series of studies describing the underpinning factors that shape the phylogenetic and functional plantassociated communities. We advocate the idea that understanding the mechanisms by which plants select and interact with their microbiomes may have a direct effect on plant development and health, and further lead to the establishment of novel microbiome-driven strategies, that can cope with the development of a more sustainable agriculture.

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Section: Plant Selection For the Rhizosphere Microbial Communitiesmentioning

confidence: 99%

Section: Plant Selection For the Rhizosphere Microbial Communitiesmentioning

confidence: 99%

Exploring interactions of plant microbiomes

Andreote

Gumiere

Durrer

2014

Sci. agric. (Piracicaba, Braz.)

153

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“…The diversity of plant-associated bacteria may play a fundamental role in different processes such as organic material recycling, mineralization and fixation of essential nutrients, such as carbon (C), nitrogen (N) and phosphorus (P). These nutrients are responsible for important processes in biogeochemical cycles, where photosynthesis, atmospheric N fixation and microbial mineralization are parts of primary production [6,7].…”

Section: Introductionmentioning

confidence: 99%

Bacterial Rhizosphere Biodiversity from Several Pioneer Desert Sand Plants Near Jizan, Saudi Arabia

Osman¹,

Zélicourt²,

Bisseling³

et al. 2016

Open Conf. Proceed. J.

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Life in arid regions and, in particular, hot deserts is often limited due to their harsh environmental conditions, such as large temperature fluctuations and low amounts of water. These extreme environments can influence the microbial community present on the surface sands and any rhizosphere members surrounding desert plant roots. The Jizan desert area, located in Saudi Arabia, supports particular vegetation that grows in the large sandy flat terrain. We examined five different samples, four from the rhizosphere of pioneer plants plus a surface sand sample, and used pyrosequencing of PCR-amplified V1-V3 regions of 16S rDNA genes from total extracted DNA to reveal and compare the bacterial population diversity of the samples. The results showed a total of 3,530 OTUs in the five samples, calculated using ≥ 97% sequence similarity levels. The Chao1 estimation of the bacterial diversity fluctuated from 637 to 2,026 OTUs for a given sample. The most abundant members found in the samples belong to the Bacteroidetes, Firmicutes and Proteobacteria phyla. This work shows that the Jizan desert area of Saudi Arabia can contain a diverse bacterial community on the sand and surrounding the roots of pioneer desert plants. It also shows that desert sand microbiomes can vary depending on conditions, with broad implications for sandstone monument bacterial communities

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“…일반적인 토양 1 g에는 대략 10 8 cfu 미 만의 세균이 서식하나 근권 토양에는 10 10 에서 10 12 정도의 세 균이 존재한다고 알려져 있다 (Foster, 1988). 이들 근권 미생물 은 식물의 제2의 유전체라고 불릴 정도로 식물의 건강에 필수 적이고, 식물과의 상호작용하면서 성장과정에 중요한 역할을 하기 때문에 많은 연구자들의 관심분야이다 (Berendsen et al, 2012;Chaparro et al, 2014;Prashar et al, 2014). 토양 미생물 은 토양의 물리화학적 특성, 경작형태 등 다양한 요인에 의해 영향을 받으며 (Girvan et al, 2003;Frey et al, 2004;Fierer and Jackson, 2006;Lauber et al, 2008;Faoro et al, 2010;Rousk et al, 2010), 근권 미생물의 경우 토양의 특성뿐만 아니라 식물 의 발달 단계에 의해서도 영향을 받는다 (Baudoin et al, 2002;Mougel et al, 2006;Houlden et al, 2008;Gottel et al, 2011;Chaparro et al, 2014).…”

Section: 근권(Rhizosphere)은 뿌리의 영향을 받는 좁은 영역으로 미 생물이 상호작용하는 놀이터이자 전쟁터라고unclassified

Bacterial core community in soybean rhizosphere

Lee¹,

Ahn²,

Choi³

et al. 2015

The Korean Journal of Microbiology

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Soybean is well known to be originated from Korea and far-east Asian countries, and studies of many root nodule bacteria associated with soybean have mainly-focused on nitrogen fixation, but much less study was carried out on bacterial community in the rhizosphere of soybean. In this study, we analyzed the bacterial community in rhizosphere of Korean soybean, Daepungkong using the pyrosequencing method based on the 16S rRNA gene to characterize the change of the rhizosphere community structure according to the growth stages of soybeans and to elucidate bacterial core community in rhizosphere of soybean. Our results revealed that bacterial community of rhizosphere soil differed from that of bulk soil and was composed of a total of 21 bacterial phyla. The predominant phylum in the rhizosphere of soybean was Proteobacteria (36.6-42.5%) and followed by Acidobacteria (8.6-9.4%), Bacteroidetes (6.1-10.9%), Actinobacteria (6.4-9.8%), and Firmicutes (5.7-6.3%). The bacterial core community in soybean rhizosphere was mainly composed of the operational taxonomic units (OTUs) belonging to the phylum Proteobacteria throughout all growth stages. The OTU00006 belonged to the genus Bradyrhizobium had the highest abundance and Steroidobacter, Streptomyces, Devosia were followed. These results show that bacterial core community in soybean rhizosphere was mainly composed of OTUs associated with plant growth promotion and nutrient cycles.

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Rhizosphere: its structure, bacterial diversity and significance

Cited by 275 publications

References 109 publications

Exploring interactions of plant microbiomes

Exploring interactions of plant microbiomes

Bacterial Rhizosphere Biodiversity from Several Pioneer Desert Sand Plants Near Jizan, Saudi Arabia

Bacterial core community in soybean rhizosphere

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