tmv virus ppt

Tobacco Mosaic Virus (TMV) The virus, TMV, causes the disease Tobacco Mosaic which affects tobacco, tomato, other Solanaceous plants and upwards of 200 plant species Pathogen Description TMV is a viral plant pathogen and a member of a large group of viruses within the genus Tobamovirus. 4 0 obj endobj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 13 0 R/Group<>/Tabs/S/StructParents 1>> 8 0 obj d���������R�ؑi6��%�m���T�Ç��n��&�Õ��I�#�v�l��J�PT��D@�He{)��Rҵ#���#�淹��ޣTHN��v{nN��٬�#�p,Rl8�/��q'5����z���5�K4^זL-��d?�5ދ?�}Ì���T�k�-J�$X���+�[@v!������m��:�[ޏ�Ϊ6>�^֒C�������ac�7E��/�%7��ķwa�Y �7������\ >u�QN�=��\�;�'�*��ݵE�Bю_��)Ρ���6�7Nu��Ůl�$q��yP�f�I����� Propagate plants via seed rather than vegetatively. 1 0 obj However, TMV vectors are, in general, not efficiently delivered to plant cells by agroinfection. ... PowerPoint Presentation Author: Levy,Amit <> Remove all crop debris from benches and the greenhouse structure. <> x��UMo�@�[������w���6-� @�z�8g�XJ�����ui��4��ϝ73of���899�N>^ ;=�� ��2ƸL�b�`k����0�|:�X™�-���k��t�q��98����{ R�4���"p�j��4�0�8/��apM�VY��m���|��{ ��ú�+�%4+����0������s�H*���k���d����l�e��aT��ƌ>�h���j�cK&UI�d��A���p���0��F(*�b��^ endstream <> 17 0 obj It was the first virus to be discovered, and the first to be crystallised and its structure shown in detail. endobj MARTINUS BEIJERINCK BENTUK VIRUSVirus dapat berbentuk oval, batang (memanjang), huruf T, dan dapat juga berbentuk bulat.Virus memiliki struktur yang sangat sederhana. 22 0 obj TMV has a very wide host range, affecting numerous crops, ornamentals and weeds including cucumber, lettuce, beet, pepper, tomato, petunia, jimson weed and horsenettle. The infection causes characteristic patterns, such as "mosaic"-like mottling and discoloration on the leaves (hence the name). carrot, cucurbits, Symptoms Introduction Figure 1: Common virus mosaic symptoms. stream 9 0 obj Presentasi Powerpoint VIRUS Kelas X Super Lengkap. In the present study, we show that RSV infection triggers the UPR which activates the autophagy pathway in N. benthamiana. <> TMV was the first virus to be discovered. Download Free PDF. Cucumber Mosaic Virus is one of the most widespread of all viral diseases. <> The virus can very easily be moved from plant to plant by workers or even from root to root contact. The tobacco mosaic virus infects tobacco and lots of other closely related species, such as tomatoes and peppers. also known as tobacco mosaic virus, o-strain [2]. It is particularly damaging to home gardens because it infects many other familiar vegetables (e.g. !�$- P$��t�->`��ݺAV��J���JR=8�{rO�'�S� endobj Bacteria are retained by such filters, a new world was discovered: filterable … 23 0 obj ���=ZfN�qK5�ז�!wE�M��"(����l��|m��u8DiGϱ�� Infected plants may have brittle stems, abnormally small, curled leaves, and unripened fruit. Get notified when we have news, courses, or events of interest to you. ToMV infects tomato most commonly, but the virus can also infect pepper, potato, apple, pear, cherry and numerous weeds, including pigweed and lamb's quarters.Symptoms may differ on different hosts. [ 9 0 R] endobj These viruses can survive for long periods in crop debris and on contaminated equipment. endobj Plant viruses have varying strategies for infecting hosts which reflect their use of existing functionally r… stream TMV most likely moves from cell-to-cell as a complex of the RNA, P30, and replicase proteins. ���RB�vK��J{Q�B�I���jR��1���QWr�0�}�y|���ͦ���+��.��3P �T Tobacco mosaic virus was the first virus to ever be identified and described. Chewing insects such as grasshoppers and caterpillars occasionally spread the virus but are usually not important in spread. 10 0 obj 2 0 obj Characteristics of a Virus •Wendell Stanley concluded that TMV was a chemical rather than an organism/cell •Smaller than prokaryotic cells (like bacteria) •Difficult to classify (debate over living vs. nonliving) •function and reproduce ONLY inside other living cells Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus species in the genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae. Tobacco mosaic virus (TMV) is named for one of the first plants in which it was found in the 1800s. Once inside the plant cell, the protein coat falls away and nucleic acid portion directs the plant cell to produce more virus nucleic acid and virus protein, disrupting the normal activity of the cell. Tobacco mosaic virus (TMV) Symptoms on Petunia 4. <>>> The viral RNA is infectious by itself, but the addition of a protein coat protects the RNA from enzymes that would destroy it. Seed transmission occurs in two ways • Externally seed borne • due to external contamination of the seed with virus particles (TMV, PVX) • Internally seed borne (BCMV, CMV, BYMV, ULCV) • due to infection of the living tissues of the embryo. If the sap contains TMV, it can be introduced into other plants when those come in contact with this sap. Chronic infection can lead to death of the host. 16 0 obj Tobacco mosaic virus Cucumber mosaic virus. Two scientists contributed to the discovery of the first virus, Tobacco mosaic virus. �VP�{�Y���R��v�%�E��>�. Thoroughly wash hands after handling tobacco products or TMV-infected plants.

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