Maize Roots, Rhizosphere, Soil Microbes, and Nutrient Dynamics

2012 ◽  
pp. 199-220
Keyword(s):  
Nutrient Dynamics ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Maize Roots

scholarly journals Effects of soil salinity on rhizosphere soil microbes in transgenic Bt cotton fields

2017 ◽  
Vol 16 (7) ◽  
pp. 1624-1633 ◽  
Author(s):  
Jun-yu LUO ◽  
Shuai ZHANG ◽  
Xiang-zhen ZHU ◽  
Li-min LU ◽  
Chun-yi WANG ◽  
...  
Keyword(s):  
Soil Salinity ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Bt Cotton ◽  
Transgenic Bt Cotton ◽  
Cotton Fields

scholarly journals Digitaria insularis Management and Nematode Dynamics in Off-season Maize

2020 ◽  
Vol 8 (2) ◽  
pp. 729
Author(s):  
Marcos Massuo Kashiwaqui ◽  
Claudia Regina Dias-Arieira ◽  
João Paulo Matias ◽  
André A. Pazinato da Silva ◽  
José Cristimiano dos Santos Neto ◽  
...  
Keyword(s):  
Weed Management ◽  
Management System ◽  
Rhizosphere Soil ◽  
Control Level ◽  
Management Systems ◽  
Acetyl Coa Carboxylase ◽  
Continuous Increase ◽  
Maize Roots ◽  
Excellent Control ◽  
Soil Rhizosphere

Maize stands out as one of the most important crops in succession to soybean in tropic countries. However, the susceptibility of both crops to nematodes, can cause a continuous increase in the nematode population, especially in areas where there is the occurrence of weeds susceptible to the parasites. Thus, the objective was to evaluate the nematodes dynamics in a growing area with off-season maize under chemical weed management. The experiment was installed at Tuneiras do Oeste County, Brazil, designed in randomized blocks, with seven treatments and five replications, constituted by sourgrass (Digitaria insularis) management systems with glyphosate associated to herbicides inhibitors of the enzyme acetyl-CoA carboxylase (ACCase) and auxin-mimetic, and complement with glyphosate + atrazine + tembotrione in post-emergence. The effect of treatments on Pratylenchus spp. population was observed in roots and soil rhizosphere soil of D. insularis and in maize roots. Glyphosate application followed by glyphosate + atrazine was inefficient in controlling sourgrass. Management system with glyphosate + clethodim + 2.4-D followed by glyphosate + atrazine + tembotrione reduced the Pratylenchus spp. population in sourgrass, but any management system repeated this effect in maize. Management systems of D. insularis with associations of glyphosate + clethodim; glyphosate + clethodim + 2.4-D and glyphosate + fenoxaprop-p-ethyl, all followed by glyphosate + atrazine + tembotrione, showed excellent control level of sourgrass without affecting plant height, grain and rank numbers and grain yield. It is concluded that the management system using herbicides association controlled sourgrass and may interferer on Pratylenchus spp. population.

Selective infection of maize roots by streptomycin-resistant Azospirillum lipoferum and other bacteria

1979 ◽  
Vol 25 (11) ◽  
pp. 1264-1269 ◽  
Author(s):  
Johanna Döbereiner ◽  
Vera Lucia Divan Baldani
Keyword(s):  
Antibiotic Resistance ◽  
Rhizosphere Soil ◽  
Resistant Bacteria ◽  
Root Infection ◽  
Azospirillum Lipoferum ◽  
Wheat Roots ◽  
Low Level ◽  
Maize Roots ◽  
Resistant Strains

The percentage of low-level streptomycin-resistant (20 μg/mL) bacteria in surface-sterilized or washed maize roots was more than a thousand times higher than that in soil populations. There was also a higher incidence of resistant bacteria in rhizosphere as compared with non-rhizosphere soil and bacteria isolated from maize roots were relatively tolerant to several other antibiotics. Azospirillum lipoferum was predominant in surface-sterilized roots of field-grown maize and was low-level streptomycin-resistant while most soil isolates were sensitive. Inoculation with A. brasilense isolated from wheat roots was unsuccessful in terms of establishment even when streptomycin-resistant strains were used. Unidentified causes of specific plant–bacteria affinities therefore transcend the role of antibiotic resistance in maize root infection.

Genetic diversity in rhizosphere soil microbes detected with SRAP markers

2011 ◽  
Vol 19 (4) ◽  
pp. 485-493 ◽  
Author(s):  
Li Chunnan ◽  
Cui Hairui ◽  
Wang Weibo
Keyword(s):  
Genetic Diversity ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Srap Markers

Soil Microbes and the Chemical Properties of the Rhizosphere and Non-Rhizosphere Soil under Two Types of Vegetation Restoration in the Hobq Sandy Land of Inner Mongolia, China

2016 ◽  
Vol 36 (20) ◽  
Author(s):  
戴雅婷 DAI Yating ◽  
侯向阳 HOU Xiangyang ◽  
闫志坚 YAN Zhijian ◽  
吴洪新 WU Hongxin ◽  
解继红 XIE Jihong ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Chemical Properties ◽  
Vegetation Restoration ◽  
Sandy Land

scholarly journals Effects of Soil Microbiomes and Enzymatic Activities on Glechoma longituba

HortScience ◽  
2020 ◽  
Vol 55 (4) ◽  
pp. 515-521
Author(s):  
Li Liu ◽  
Lin Jin ◽  
Qiaosheng Guo
Keyword(s):  
Bioactive Compounds ◽  
Soil Enzymes ◽  
High Throughput Sequencing ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Plant Morphology ◽  
Soil Samples ◽  
Medicinal Uses ◽  
Glechoma Longituba ◽  
Morphological Indices

Soil microbes and enzymes play important roles in plant growth and metabolism. However, for Glechoma longituba (Nakai) Kupr., an important crop with edible and medicinal uses in China, their effects are not well elucidated. To explore their impacts on plant morphology and bioactive compounds, the plant samples and rhizosphere soil of five different G. longituba populations were collected and investigated in this study. After high-throughput sequencing combined with data analyses, high microbial diversity and richness in the rhizosphere soil of each G. longituba population were observed, and the variations on bacterial and fungal community compositions among these soil samples were also proved. The activities of urease, neutral phosphatase, sucrase, protease, and polyphenol oxidase were significantly different among the rhizosphere soils from different G. longituba populations. Among the major microbial communities and soil enzymes we studied, the genera of Tomentella, Sebacina, Fusarium, Nitrospira, and the activity of soil sucrase were remarkably correlative with both the morphological indices and the contents of bioactive compounds of G. longituba by redundancy analysis. These findings would help guide the scientific plantation of G. longituba to promote its medicinal quality.

Effects of latitude and soil microbes on the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata

2021 ◽  
Author(s):  
Yongge Yuan ◽  
Huifei Jin ◽  
Junmin Li
Keyword(s):  
Invasive Plants ◽  
Invasive Plant ◽  
Soil Microbes ◽  
Field Survey ◽  
Rhizosphere Soil ◽  
Greenhouse Experiment ◽  
Insect Herbivore ◽  
Solidago Canadensis ◽  
Damage Level ◽  
Latitudinal Pattern

Abstract Aims There is an increasing likelihood that invasive plants are again exposed to their co-evolved specialist herbivores in the non-native range. However, whether there is a latitudinal pattern associated with the resistance of an invasive plant to its co-evolved herbivores and how soil microbes affect resistance has been little explored. We hypothesized that the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata could increase with latitude, and that local rhizosphere microbes could facilitate invasive plants to become resistant to their co-evolved herbivores. Methods We conducted a field survey and a greenhouse experiment to examine whether there was a latitudinal pattern in the abundance of C. marmorata and in the damage it caused to S. canadensis in China. We tested whether local rhizosphere microbes of invasive plants can promote the resistance of S. canadensis to C. marmorata herbivory. Important findings In the field survey, both density of C. marmorata and damage level of S. canadensis were positively correlated with latitude, and with S. canadensis plant growth, indicating a latitudinal pattern in the resistance of S. canadensis to C. marmorata. However, in the greenhouse experiment, S. canadensis from different latitudes did not suffer significantly from different levels of damage from C. marmorata. Additionally, the damage level of S. canadensis was lower when rhizosphere soil and rhizomes originated from field S. canadensis with same damage level than with different damage levels. This result indicates that local rhizosphere soil microbes promote the adaptation of S. canadensis to resistance of C. marmorata.

Ameliorative Effects of Trichoderma harzianum and Rhizosphere Soil Microbes on Cadmium Biosorption of Barley (Hordeum vulgare L.) in Cd-Polluted Soil

2021 ◽  
Author(s):  
Fatemeh Taghavi Ghasemkheili ◽  
Flemming Ekelund ◽  
Jesper Liengaard Johansen ◽  
Hemmatollah Pirdashti ◽  
Seyede Roghie Ghadirnezhad Shiade ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Trichoderma Harzianum ◽  
Soil Microbes ◽  
Rhizosphere Soil ◽  
Polluted Soil ◽  
Hordeum Vulgare L
Sign in / Sign up

Export Citation Format

Share Document