Planetagarden
Viral disease free plants can be obtained from virus infected plants by the technique of meristem culture. ... Meristem culture is a process in which an already existing shoot meristem grows in the meristem culture and adventitious roots regenerate from these shoots which makes the generated plant disease free.
- How can we obtain virus free plants?
- Which tissue is used as an explant to obtain virus free plants in tissue culture?
- Which part of plant is virus free?
- Which is the most suitable part of the plant used to make virus free plants in micropropagation * A root B meristem c stem D leaves?
- Do viruses attack plants?
- How do plants control virus diseases?
- What is the most suitable for virus-free plants for micropropagation?
- Why is meristem culture virus-free?
- What are the types of micropropagation?
- Is axillary meristem virus free?
- Which tissue is present in the veins of leaves?
- What does meristem mean?
- What is micropropagation in biology?
- Can plant viruses jump to humans?
- Can plants carry human viruses?
- Which is the smallest plant virus?
- What plant diseases are caused by viruses?
- What controls a virus?
- What is an example of a plant virus?
- Which part would you select as an explant to recover healthy plants from virus affected plants?
How can we obtain virus free plants?
Shoot meristem-tip culture alone or in combination with thermotherapy, chemotherapy, electrotherapy and/or cryotherapy is being widely used to raise virus free plants from infected stock plants.
Which tissue is used as an explant to obtain virus free plants in tissue culture?
The meristem grows into a virus-free shoot that is rooted to get a virus-free plant.
Which part of plant is virus free?
Apical meristems are virus free tissues as most of the viruses can not infect these tissues and viral growth can not keep pace with these fast growing/dividing meristems. Thus, apical meristem is used to culture and produces a virus free plant.
Which is the most suitable part of the plant used to make virus free plants in micropropagation * A root B meristem c stem D leaves?
If the plant is infected by a virus, the apical and axillary meristem will remain free of virus. So, one can remove the meristem and grow it in-vitro to obtain virus-free plants.
Do viruses attack plants?
Some viruses can infect plants when aphids and other insects tap into the phloem to feed. Such insect vectors can also pick up virus particles and carry them to new plant hosts. Other viruses infect plant cells through a wound site created by a leaf-munching insect such as a beetle.
How do plants control virus diseases?
Plant viruses need to be transmitted by an organism-vector (insects, nematodes, zoosporic endoparasites) for their plant-to-plant spread. Hence, viral diseases can be efficiently controlled by limiting the populations of their vectors with the applications of appropriate pesticides.
What is the most suitable for virus-free plants for micropropagation?
So, the correct answer is 'Meristem'.
Why is meristem culture virus-free?
The reasons for the meristem to be free from the virus: ... These cells have a high rate of metabolism and viruses cannot replicate in such cells. Most of the viruses migrate through Vascular elements but at the tip/meristem region, vascular elements are not formed. Thus, viruses cannot reach the meristem region.
What are the types of micropropagation?
Micropropagation techniques are of three types based on the way of propagation: first, the propagation from shoots with cytokinin like benzyladenine or kinetin; second, multiple shoot differentiation from dedifferentiating tissue, callus, with an auxin-like indole acetic acid; and finally, the embryo differentiation ...
Is axillary meristem virus free?
In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus because. Viruses cannot multiply within meristem cells.
Which tissue is present in the veins of leaves?
1) Xylem and phloem are the tissue which is present in the veins of leaves.
What does meristem mean?
: a formative plant tissue usually made up of small cells capable of dividing indefinitely and giving rise to similar cells or to cells that differentiate to produce the definitive tissues and organs.
What is micropropagation in biology?
Micropropagation refers to the in vitro multiplication and/or regeneration of plant material under aseptic and controlled environmental conditions to produce thousands or millions of plants for transfer to the field.
Can plant viruses jump to humans?
Direct plant-to-human transmission
This is a very rare and highly unlikely event as, to enter a cell and replicate, a virus must "bind to a receptor on its surface, and a plant virus would be highly unlikely to recognize a receptor on a human cell.
Can plants carry human viruses?
In most cases, the answer is no. The fungi, bacteria, viruses, and nematodes that cause disease in plants are very different from those that cause disease in humans and other animals.
Which is the smallest plant virus?
Viruses are the smallest among all known organisms. The typical diameter of a spherical plant virus is ~30 nm. The rigid, rod-shaped TMV particle is 300 x 18 nm and consists of an RNA genome of about 6,400 nucleotides encapsidated by 2,130 copies of the TMV coat protein.
What plant diseases are caused by viruses?
The Top 10 list includes, in rank order, (1) Tobacco mosaic virus, (2) Tomato spotted wilt virus, (3) Tomato yellow leaf curl virus, (4) Cucumber mosaic virus, (5) Potato virus Y, (6) Cauliflower mosaic virus, (7) African cassava mosaic virus, (8) Plum pox virus, (9) Brome mosaic virus and (10) Potato virus X, with ...
What controls a virus?
Many viral diseases are controlled by reducing exposure to the virus by (1) eliminating nonhuman reservoirs, (2) eliminating the vector, and (3) improving sanitation.
What is an example of a plant virus?
Which part would you select as an explant to recover healthy plants from virus affected plants?
Answer. Shoot tip( OR )Root tip... where the cells are actively dividing.. where virus cannot grow.
