Ebola virus

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Ebola virus is a negative-sense single-stranded RNA virus of the family Filoviridae and genus Ebolavirus. It has five species that cause disease in humans: Zaire, Sudan, Reston, Tai Forest, and Bundibugyo ebolaviruses. The virus enters host cells through macropinocytosis and uses several structural proteins like nucleoprotein, VP30, VP35, VP24, L protein, and VP40 to transcribe and replicate its genome and assemble new virus particles that bud from the cell.

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Nucleoprotein Key component of ribonucleoprotein complex, encapsidates viral genome and protects
viral mRNA from degradation
VP 30 Initiates ebolavirus transcription
VP35 Assembly of viral complex with NP and VP30
VP24 Nucleocapsid assembly and stability
RNA incorporation into VLPs
Regulates transcription and translation
Polymerase L Involved in transcription and regulation of viral genome and mRNA editing
VP 40 Viral assembly and budding
Glycoprotein Virus attachment and entry
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GROUP V (-) ssRNA
 Order - MONONEGAVIRALES
 Family - FILOVIRIDAE
 Genus - Ebolavirus
 Species - Zaire ebolavirus (EBOV)
Sudan ebolavirus (SUDV)
Reston ebolavirus (RESTV)
Tai Forest ebolavirus (TAFV)
Bundibugyo ebolavirus (BDBV)
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Cotton crops are vulnerable to a variety of sucking pests, which can severely impact plant health, yield, and fiber quality. These pests primarily feed on plant sap, extracting nutrients directly from the plant's vascular system. Here's a breakdown of some of the most significant sucking pests in cotton cultivation: Aphids: Cotton aphids or melon aphids can cause direct damage by sucking sap and indirect damage by secreting honeydew, which encourages sooty mold growth. This can interfere with photosynthesis and weaken the plant. Aphids can also transmit viral diseases. Whiteflies: Two species, the silverleaf whitefly and the bandedwinged whitefly, are particularly troublesome. They not only suck sap from the underside of leaves, causing yellowing and leaf drop, but their honeydew excretion promotes sooty mold and they can transmit several plant viruses. Thrips: While thrips can chew on plants, their primary damage to cotton is through sucking. They attack the cotton plant during its seedling stage, which can stunt growth and reduce vigor. Thrips are also capable of transmitting the Cotton Bud disease. Spider Mites: These are not insects but arachnids. Spider mites, such as the two-spotted spider mite, suck cell contents from the leaves, leading to speckled discoloration and potentially significant leaf loss if infestations are severe. Leafhoppers: Including various species, leafhoppers can cause direct damage through feeding, which results in leaf curling and stunted growth. They can also be vectors for plant diseases. Mealybugs: These pests are less common but can be problematic, especially in clustered planting conditions. They suck sap and secrete honeydew, which leads to sooty mold. Mealybugs can also spread viruses. Stink Bugs: Although primarily known for their chewing mouthparts, certain stink bugs can cause damage similar to sucking pests by injecting saliva into the plant and sucking out nutrients, leading to boll damage and stained lint. Management Strategies: Cultural Controls: This includes practices such as crop rotation, using resistant varieties, and managing planting and harvesting times to avoid peak pest populations. Biological Controls: Beneficial insects like lady beetles, lacewings, and predatory mites can naturally control sucking pest populations. Parasitic wasps also play a role in controlling aphid and whitefly populations. Chemical Controls: Insecticides may be used but should be chosen carefully to minimize resistance development and preserve beneficial insects. Systemic insecticides can be particularly effective against sucking pests. Integrated Pest Management (IPM): Combining multiple control strategies based on monitoring and thresholds to apply the most effective and environmentally sensitive approach. Effective management of sucking pests in cotton requires a thorough understanding of the pest species present, their life cycles, and the ecological balance of the field environment.

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Mustard, as a crop, is susceptible to a variety of pests that can affect its growth and yield. Here’s a rundown of some common pests that target mustard plants: Aphids: These small, sap-sucking insects can cause significant damage by feeding on the leaves and stems. Aphids also excrete a sticky substance known as honeydew, which can lead to the growth of sooty mold on the plants. Flea Beetles: These tiny beetles jump like fleas when disturbed and chew small holes in the leaves. They are particularly damaging in the early growth stages of the plant. Cabbage Loopers: The larvae of a type of moth, these caterpillars are known for their distinctive looping movement. They chew large holes in the leaves and can defoliate plants if present in large numbers. Diamondback Moth Larvae: Another caterpillar pest, these larvae chew small holes in the leaves and can cause extensive damage, especially when infestations are heavy. Whiteflies: These are tiny, winged insects that feed on plant sap and can quickly become a problem in greenhouse or close planting conditions. Like aphids, they also secrete honeydew. Cutworms: These are the larvae of certain types of moths and are known for cutting young plants at the stem base at ground level. They are most destructive during the night. Root Maggots: The larvae of root maggot flies, these pests attack the roots of mustard plants, causing wilting and potentially killing young plants. Harlequin Bugs: These are colorful stink bugs that suck the sap from mustard plant stems and leaves, causing the leaves to become stippled, wilt, and eventually die if the infestation is severe. Mustard Sawfly: The larvae of the mustard sawfly can cause considerable defoliation, as they feed voraciously on the leaves. Clubroot: Caused by a fungus-like organism, clubroot affects the roots, causing them to swell and distort. While technically a disease, it is often associated with pest management because controlling it involves similar preventative strategies. Control Measures: Managing pests in mustard involves a combination of cultural, biological, and chemical methods. Crop rotation, resistant varieties, timely sowing, maintaining plant health, and using natural predators like ladybugs and parasitic wasps can help keep pest populations under control. Chemical pesticides should be used as a last resort due to their potential impact on the environment and non-target species.

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Ebola virus

1. EBOLA VIRUS 1 KHADIJA SAEED

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12. Nucleoprotein Key component of ribonucleoprotein complex, encapsidates viral genome and protects viral mRNA from degradation VP 30 Initiates ebolavirus transcription VP35 Assembly of viral complex with NP and VP30 VP24 Nucleocapsid assembly and stability RNA incorporation into VLPs Regulates transcription and translation Polymerase L Involved in transcription and regulation of viral genome and mRNA editing VP 40 Viral assembly and budding Glycoprotein Virus attachment and entry 12

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15. GROUP V (-) ssRNA  Order - MONONEGAVIRALES  Family - FILOVIRIDAE  Genus - Ebolavirus  Species - Zaire ebolavirus (EBOV) Sudan ebolavirus (SUDV) Reston ebolavirus (RESTV) Tai Forest ebolavirus (TAFV) Bundibugyo ebolavirus (BDBV) 15

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