Category: V
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Virus structure
A microorganism that can pass through filters that trap bacteria and can reproduce within a host’s living cells is defined as a virus. The virus particle’s nucleic acid component, along with its surrounding protein shell called the capsid, makes up the nucleocapsid. The capsid is created from a collection of smaller structural protein units known…
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Virescence
the occurrence of green coloration (usually due to formation of chlorophyll) in parts that are not normally green, especially in the perianth.
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Vein clearing
The augmentation of the transparency of the venation system in a foliage, results in an intensified distinctness of the design (luminosity opposed to obscurity) when irradiated by passing light.
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Vein banding
The alteration of hue within a slender region of foliar material bordering the central vascular bundles.
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Vector specificity
The scope of vector species capable of transmitting a specific virus exhibits a comparative variation.
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Vector efficiency
The proportionate rate of dissemination (often denoted as a percentage) that can be foreseen from a distinct amalgam of vector, virus, and host.
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Vascular wilt disease
The medical condition referred to is one in which the infecting agent is primarily localized within the vascular structure of the host organism throughout the course of disease progression. A defining characteristic of this condition is the manifestation of wilted tissue in the host organism. It should be noted, however, that if wilting is not…
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Vascular mycosis
A mycotic ailment, in which the contamination is relatively restricted to the host plant’s vascular system, is commonly known as a fungal disease. The expression ‘vascular wilt disease’ is fitting for most occurrences and is more favored. Notwithstanding, in cases where drooping is not an explicit symptom, vascular mycosis may be an acceptable term.
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Vertical resistance
Resistance to specific pathogen races while susceptible to others is a concept introduced by J.E. van der Plank in their work on plant diseases, epidemics, and control published in 1963 under Academic Press in New York and London. The resistance in question involves noticeable interactions that can be identified through a variance analysis of a…
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Vibrational massage
Utilizing mechanical oscillations to administer massage on bodily surfaces with the intention of mitigating tension and alleviating anxiety.