Comparing the effects of root surface scaling with ultrasound instruments and Er,Cr:YSGG laser

Aim. To study the specifi cities of complex inoculation of spring wheat roots with the bacteria of Azospirillum genus and Chaetomium cochliodes Palliser 3250, and the isolation of bacteria of Azospirillum genus, capable of fi xing atmospheric nitrogen, from the rhizospheric soil, washed-off roots and histoshere. Materials and meth- ods. The phenotypic features of the selected bacteria were identifi ed according to Bergi key. The molecular the polymerase chain reaction and genetic analysis was used for the identifi cation the bacteria. Results. It has been demonstrated that during the introduction into the root system of spring wheat the strain of A. brasilensе 102 actively colonizes rhizospheric soil, root surface and is capable of penetrating into the inner plant tissues. Conclusions. The soil ascomucete of C. cochliodes 3250 promotes better settling down of Azospirillum cells in spring wheat root zone, especially in plant histosphere which induces the increase in the content of chlorophyll a and b in the leaves and yield of the crop.

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Gingival recession and periodontal therapy

Journal of Baghdad College of Dentistry ◽

10.26477/jbcd.v31i1.2575 ◽

2019 ◽

Vol 31 (1) ◽

pp. 31-36

Author(s):

Monya N. Hassan ◽

Maha A. Aziz

Keyword(s):

Gingival Recession ◽

Root Surface ◽

Periodontal Therapy ◽

Etiological Factors ◽

Gingival Margin

Background: Gingival recession is defined as the apical migration of the gingival margin below the cementoenamel junction (CEJ), resulting in exposure of the root surface and it is one of the main esthetic complaints of patients. The management of gingival recession and its sequelae is based on a thorough assessment of the etiological factors and the degree of tissue involvement.

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Diseases of the kumara crop

New Zealand Plant Protection ◽

10.30843/nzpp.2009.62.4845 ◽

2009 ◽

Vol 62 ◽

pp. 402-402

Author(s):

S.L. Lewthwaite ◽

P.J. Wright

Keyword(s):

Fungal Pathogens ◽

Ipomoea Batatas ◽

Mechanical Damage ◽

Soft Rot ◽

Economic Loss ◽

Root Surface ◽

Black Rot ◽

Rhizopus Stolonifer ◽

Ceratocystis Fimbriata ◽

Pink Rot

The predominant diseases of the commercial kumara (Ipomoea batatas) or sweetpotato crop are caused by fungal pathogens The field disease pink rot results from infection by the fungus Sclerotinia sclerotiorum Lesions form on vines but may spread down stems to the roots The widespread nature of this disease in sweetpotato appears peculiar to New Zealand Scurf is a disease caused by Monilochaetes infuscans which occurs in the field but may proliferate amongst stored roots The disease causes a superficial discolouration of the root surface which is mainly cosmetic but can also increase root water loss in storage Infection by Ceratocystis fimbriata produces a disease known as black rot The disease can be transmitted amongst plants at propagation but is particularly rampant amongst roots in storage This disease is readily transmitted and can cause severe economic loss Fusarium oxysporum causes surface rots in stored roots characterised by light to dark brown lesions that tend to be firm dry and superficial The lesions may be circular and centred on wounds caused by insects or mechanical damage at harvest Soft rot caused by Rhizopus stolonifer generally occurs in roots after they are washed and prepared for the market Fungal infection occurs through wounds or bruised tissue producing distinctive tufts of white fungal strands and black spores

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Nutrition characteristics in root surface and rhizosphere soils of direct-seeding rice in rice-duck eco-farming system

CHINESE JOURNAL OF ECO-AGRICULTURE ◽

10.3724/sp.j.1011.2010.01151 ◽

2010 ◽

Vol 18 (6) ◽

pp. 1151-1156 ◽

Cited By ~ 4

Author(s):

Jian-Kai SHEN ◽

Huang HUANG ◽

Zhi-Qiang FU ◽

Yang-Zhu ZHANG ◽

Pan LONG ◽

...

Keyword(s):

Farming System ◽

Root Surface ◽

Direct Seeding ◽

Rhizosphere Soils

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Geomorphologic Study on Root Surface of Human Avulsed Teeth by Scanning Electron Microscopy

SSRN Electronic Journal ◽

10.2139/ssrn.3586674 ◽

2020 ◽

Author(s):

Qian-Wen Ding ◽

Mei Lin

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Root Surface ◽

Scanning Electron

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Phytase-Producing Rahnella aquatilis JZ-GX1 Promotes Seed Germination and Growth in Corn (Zea mays L.)

Microorganisms ◽

10.3390/microorganisms9081647 ◽

2021 ◽

Vol 9 (8) ◽

pp. 1647

Author(s):

Gui-E Li ◽

Wei-Liang Kong ◽

Xiao-Qin Wu ◽

Shi-Bo Ma

Keyword(s):

Seed Germination ◽

Plant Growth ◽

Biomass Accumulation ◽

Root Surface ◽

Phosphorus Concentration ◽

Maize Seedlings ◽

Total Phosphorus Concentration ◽

Rahnella Aquatilis ◽

Maize Seeds

Phytase plays an important role in crop seed germination and plant growth. In order to fully understand the plant growth-promoting mechanism by Rahnella aquatilis JZ-GX1，the effect of this strain on germination of maize seeds was determined in vitro, and the colonization of maize root by R. aquatilis JZ-GX1 was observed by scanning electron microscope. Different inoculum concentrations and Phytate-related soil properties were applied to investigate the effect of R. aquatilis JZ-GX1 on the growth of maize seedlings. The results showed that R. aquatilis JZ-GX1 could effectively secrete indole acetic acid and had significantly promoted seed germination and root length of maize. A large number of R. aquatilis JZ-GX1 cells colonized on the root surface, root hair and the root interior of maize. When the inoculation concentration was 107 cfu/mL and the insoluble organophosphorus compound phytate existed in the soil, the net photosynthetic rate, chlorophyll content, phytase activity secreted by roots, total phosphorus concentration and biomass accumulation of maize seedlings were the highest. In contrast, no significant effect of inoculation was found when the total P content was low or when inorganic P was sufficient in the soil. R. aquatilis JZ-GX1 promotes the growth of maize directly by secreting IAA and indirectly by secreting phytase. This work provides beneficial information for the development and application of R. aquatilis JZ-GX1 as a microbial fertilizer in the future.

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Effects of Ridge Tillage and Straw Mulching on Cultivation the Fresh Faba Beans

Agronomy ◽

10.3390/agronomy11061054 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1054

Author(s):

Bo Li ◽

Xinyu Chen ◽

Xiaoxu Shi ◽

Jian Liu ◽

Yafeng Wei ◽

...

Keyword(s):

Rice Straw ◽

Precision Agriculture ◽

Field Experiments ◽

Root Length Density ◽

Root Surface ◽

High Yield ◽

Root Surface Area ◽

Straw Mulching ◽

Faba Beans ◽

Ridge Tillage

Ridge tillage is an effective agronomic practice and a miniature precision agriculture; however, its effects on the growth of faba beans (Vicia faba L.) are poorly understood. This study aimed to determine the effect of ridge tillage and straw mulching on the root growth, nutrient accumulation and yield of faba beans. Field experiments were conducted during 2016 and 2017 cropping seasons and comprised four treatments: ridge tillage without any mulching (RT), flat tillage without any mulch (FT), flat tillage with rice straw mulched on the ridge tillage (FTRSM) and ridge tillage with rice straw mulched on the ridge tillage (RTRSM). The RT and RTRSM increased soil temperature and decreased soil humidity and improved soil total nitrogen, total phosphorus, available potassium and organic matter. RT and RTRSM increased the root length density, root surface area, root diameter and root activity of faba beans at flowering and harvest periods. The RT and RTRSM also increased the nitrogen, phosphorus, potassium absorption and the yield of faba beans. These results indicated that ridge tillage and straw mulching affect faba bean growth by improving soil moisture conditions and providing good air permeability and effective soil nutrition supply. This study provides a theoretical basis for the high yield cultivation improvement of faba beans.

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