• دوشنبه تا شنبه: 10:00 - 16:00 / یکشنبه تعطیل است

Role of nanotechnology in management of plant viral diseases

Plant disease management is necessary to fulfill the demands for plant-based products for the increasing human population. ... Cucumber plants treated with nickel oxide NPs showed antiviral activity against cucumber mosaic virus (CMV). It reduced the disease severity and virus accumulation and induced the expression of plant …

به خواندن ادامه دهید

Occupational disease predictors in the nickel …

Pyrometallurgical nickel production exposes workers to a wide range of occupational risk factors, including nickel aerosol, occupational noise and heat, but occupational (compensation) claims do not get enough attention in the literature. We, therefore, aimed to identify and analyze new occupational disease predictors in order to …

به خواندن ادامه دهید

Plant Responses to Environmental Nickel Toxicity

Nickel (Ni) is an important metal which has been enlisted as one of the 23 most toxic naturally occurring metals which at high concentrations are hazardous for ecological sustainability (Duda-Chodak and Baszczyk 2008).Uncontrolled anthropogenic activity like release of industrial effluents, use of fertilizers, and improper treatment of …

به خواندن ادامه دهید

Nickel and Plant Disease

Nickel and Plant Disease Bruce W. Wood Part I: General Perspective • Relatively little is known compared to other trace nutrients: – Agricultural significance? – Roles in plant metabolism, growth, and development? – Disease resistance??? Nickel as an Essential Trace Nutrient: A Diminishing Role Early Earth Atmosphere: Late Earth ...

به خواندن ادامه دهید

Synthesis of Nickel-Chitosan Nanoparticles for …

Nickel (Ni), an essential plant micronutrient, was proclaimed to regulate seed germi-nation in higher plants including cereal grains and legumes which is less toxic [15]. It activates enzymes such as urease and glycosidase-I required for nitrogen metabolism and assimilation [16]. It has been shown that nickel gets transported easily into plant sys-

به خواندن ادامه دهید

Bio-functionalized nickel-silica nanoparticles suppress …

Introduction: Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most devastative diseases that threatens rice plants worldwide.Biosynthesized nanoparticle (NP) composite compounds have attracted attention as environmentally safe materials that possess antibacterial activity that could be used …

به خواندن ادامه دهید

Nickel toxicity in plants: reasons, toxic effects, tolerance …

Ni is considered to be essential for plant growth at low concentration; however, Ni pollution is increasing in the environment, and therefore, it is important to understand its …

به خواندن ادامه دهید

Essential roles and hazardous effects of nickel in plants

Nickel, in low concentrations, fulfills a variety of essential roles in plants, bacteria, and fungi. Therefore, Ni deficiency produces an array of effects on growth and metabolism of plants, including reduced growth, and induction of senescence, leaf and meristem chlorosis, alterations in N metabolism, and reduced Fe uptake.

به خواندن ادامه دهید

Nickel enhances rice resistance against Bipolaris oryzae …

Background and aims Brown spot, caused by Bipolaris oryzae, is one of the most important diseases reducing rice yield worldwide. In order to reduce the use of fungicides, more environmentally friendly alternatives for disease control need to be available to growers. The hypothesis that rice resistance against brown spot could be …

به خواندن ادامه دهید

Exploring the Molecular Mechanisms of Nickel-Induced …

Nickel, an element that occurs naturally in the earth's crust, is found in soils, sediments, water resources, air, plants and animals. Large amounts of nickel are released into the environment as a result of such natural phenomena as volcanic eruptions or from industrial activities like nickel mining, nickel alloy production and use, power ...

به خواندن ادامه دهید

(PDF) Nickel Essentiality and Toxicity in Plants

Plant Disease, L.E. Datnoff, W.H ... sheet introduces agricultural and horticultural producers to the role and function of the newest identified essential plant nutrient, nickel (Ni). Written by ...

به خواندن ادامه دهید

Understanding Nickel Responses in Plants: More than Just …

The role of nickel in plant biology has often been overlooked due to it having been previously classified as a toxic metal element. However, nickel is an essential cofactor of plant urease, which is required to hydrolyze urea into carbon dioxide and ammonia. As such, it plays an important role in plants to limit the toxic accumulation of …

به خواندن ادامه دهید

Mechanistic considerations and biomarkers level in nickel …

Introduction. The ubiquity of heavy metals remains a significant public health concern. Whereas developed nations have evolved policies in regulating metal pollution, the same cannot be said for developing and sub-Saharan African nations (Selin, 2018, Centers for Disease Control and Prevention (CDC), 2019).Heavy metals seem to be multi-organ …

به خواندن ادامه دهید

Nickel: Human Health and Environmental Toxicology

effects on human health, such as allergy, cardiovascular and kidney diseases, lung fibrosis, lung and ... algae, primitive eukaryotes and plants [3–7]. Nickel is essential in proper growth and ...

به خواندن ادامه دهید

Nickel toxicity in plants: reasons, toxic effects, tolerance

Ni increases the disease tolerance in plants by stimulating resistance mechanisms and by exerting direct antagonistic effects on pathogens (Brown 2006). …

به خواندن ادامه دهید

GM, Samsung finalize deal for battery cell plant, delay …

GM is planning to build nickel-rich prismatic and cylindrical cells at the Samsung JV plant. It makes pouch cells with LG Energy Solution, another South Korean …

به خواندن ادامه دهید

Plants | Free Full-Text | Impact of Nickel Toxicity on Growth, …

Excessive Ni concentrations in plants can cause iron chlorosis. The nickel content of plants depends on its bioavailability in the soil, the plant species and the specific plant parts analysed. The level of the Ni in plants grown on uncontaminated soil is on …

به خواندن ادامه دهید

Synthesis of Nickel-Chitosan Nanoparticles for Controlling …

Rice blast disease is a major challenge for rice production and consumption worldwide. To explore a control measure of rice blast alternative to fungicides, nickel-chitosan nanoparticle (Ni-Ch NPs ...

به خواندن ادامه دهید

Nickel oxide nanoparticles: A new generation

Nickel oxide nanoparticles: A new generation nanoparticles to combat bacteria Xanthomonas oryzae pv. oryzae and enhance rice plant growth. ... oryzae (Xoo) is one of the major diseases that attack rice plants. It causes massive losses on rice yield which is the primary food for many countries. The foliar damage by BLB diminish the …

به خواندن ادامه دهید

A comprehensive review on the sources, essentiality and …

Nickel is found to affect the photosynthetic function of higher plants; it can severely degrade soil fertility and causes many chronic diseases in humans.

به خواندن ادامه دهید

Physiological and molecular bases of the nickel toxicity

Nickel (Ni) is an essential trace element in plants; however, excess Ni is toxic to plant growth and development (Ghasemi et al. 2009).Ni toxicity inhibits plant growth by affecting photosynthesis, root elongation and nutrient uptake, thereby reducing crop yields (Hassan et al. 2019).Ni is one of the 23 metallic pollutants that make up 3% …

به خواندن ادامه دهید

Nickel and Plant Disease

Nickel and Plant Disease . Bruce W. Wood and C. C. Reilly . Research Horticulturist and Research Plant Pathologist . USDA-Agricultural Research Service, Byron, Georgia . This article is a brief summary regarding nickel (Ni) and the present state of knowledge regarding Ni's roles in crop physiology and subsequent potential relevance to

به خواندن ادامه دهید

Synthesis of Nickel-Chitosan Nanoparticles for Controlling …

Rice blast disease is a major challenge for rice production and consumption worldwide. To explore a control measure of rice blast alternative to fungicides, nickel-chitosan nanoparticle (Ni-Ch NPs) was prepared using nickel chloride and investigated for growth improvement and inhibition of Pyricularia oryzae (blast pathogen). SEM, TEM and DLS …

به خواندن ادامه دهید

Ecotoxicity of nickel and its possible remediation

Nickel (Ni) is a beneficial plant nutrient because of its key role in plant growth (Yusuf, Fariduddin, Hayat, and Ahmad, 2011).Ni is a vital component of some particular enzymes that are participated in the nitrogen (N) metabolism and some involved in nitrogen fixation (NF), (Asher, 1991).If plants suffer from Ni's deficiency, it shows …

به خواندن ادامه دهید

Nickel in plant growth and metabolism | The Botanical …

The relationship of nickel to plants in regard to absorption, translocation and accumulation and its estimation in plant material has been presented. Nickel is usually absorbed in the ionic form, but is presumably chelated by organic carriers before translocation takes place. Nickel content of various plants has been tabulated. Nickel stimulates, and is as well …

به خواندن ادامه دهید

In Situ Analysis of Nickel Uptake from Foliar Application in …

3.1 Nickel Depletion in Hydroponics Culture. After a growth period of 6 months, the pecan plants in hydroponic solution displayed severe Ni deficiency symptoms in their leaves, which included necrosis at the tip of the leaves, i.e. i.e. classical "mouse-ear" disease (Fig. 1).Half of the plants were then treated with a foliar Ni spray (100 mg L −1 …

به خواندن ادامه دهید

Nickel Nutrition in Plants

Functions of nickel in plants and symptoms of nickel deficiency Nickel is a functional constituent of seven enzymes. Among the seven, urease (EC 3.5.1.5) (i.e., urea amidohy- ... themselves, or that Ni may stimulate plant disease resis-tance mechanisms. Although Ni's mode of action in plant protection is unclear, it was shown that direct ...

به خواندن ادامه دهید

Nickel: An Overview of Uptake, Essentiality and Toxicity in Plants

The uptake of Ni in plants is mainly carried out through the root system via passive diffusion and active transport (Seregin and Kozhevnikova 2006).The ratio of uptake between active and passive transport varies with the species, form of Ni and concentration in the soil or nutrient solution (Dan et al. 2002; Vogel-Mikus et al. 2005).The overall …

به خواندن ادامه دهید

COMPARATIVE EFFECTS OF COBALT, NICKEL AND COPPER ON PLANT …

1. An account is given of the present position of our knowledge with regard to the distribution and the physiological importance of nickel and cobalt, in relation to plants and animals. 2. Experiments on barley and broad beans were carried out in water cultures with the sulphates and chlorides of cobalt, nickel and copper. 3.

به خواندن ادامه دهید

Functions and Toxicity of Nickel in Plants: Recent Advances …

Nickel is an essential nutrient for plants. However, the amount of Ni required for normal growth of plants is very low. Hence, with the level of Ni pollution in the environment increasing, it is essential to understand the functional roles and toxic effects of Ni in plants. We briefly review advances in relevant research over the past 20 years.

به خواندن ادامه دهید