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Yogesh T. Jasrai - One of the best experts on this subject based on the ideXlab platform.

  • A valued medicinal Plant - Chitrak (Plumbago zeylanica Linn.): Successful Plant regeneration through various exPlant and field performance", Plant Tissue Culture and Biotechnology
    2015
    Co-Authors: Binita B. Chaplot, Ashok M. Dave, Yogesh T. Jasrai
    Abstract:

    Protocols for Plant Propagation through axillary bud proliferation and organo-genesis were established for Chitrak- Plumbago zeylanica Linn. (Plumbaginaceae). MS medium with 4.4 mg/l BA and 1.4 mg/l IAA elicited the maximum number of shoots (12 multiple shoots) from nodal exPlants. Leaf based callus differentiated into more than 30 shoots on MS with 160 mg/l adenine sulphate. The regenerated shoots were rooted on MS with 1.2 mg/l IBA within ten days. Almost, 96 % of the rooted shoots survived hardening when transferred to the field. The regenerated Plants did not show any morphological change and variation in levels of secondary metabolite when compared with the mother stock

  • a valued medicinal Plant chitrak plumbago zeylanica linn successful Plant regeneration through various exPlants and field performance
    Plant Tissue Culture and Biotechnology, 2008
    Co-Authors: Binita B. Chaplot, Ashok M. Dave, Yogesh T. Jasrai
    Abstract:

    Protocols for Plant Propagation through axillary bud proliferation and organo-genesis were established for Chitrak - Plumbago zeylanica Linn. (Plumbaginaceae). MS medium with 4.4 mg/l BA and 1.4 mg/l IAA elicited the maximum number of shoots (12 multiple shoots) from nodal exPlants. Leaf based callus differentiated into more than 30 shoots on MS with 160 mg/l adenine sulphate. The regenerated shoots were rooted on MS with 1.2 mg/l IBA within ten days. Almost, 96% of the rooted shoots survived hardening when transferred to the field. The regenerated Plants did not show any morphological change and variation in levels of secondary metabolite when compared with the mother stock. Key words: Medicinal Plant, Regeneration, Field performance DOI = 10.3329/ptcb.v16i2.1108 Plant Tissue Cult. & Biotech. 16(2): 77-84, 2006 (December)

Orellana Carrión, Miguel Alejandro - One of the best experts on this subject based on the ideXlab platform.

  • Regeneración in-vitro de naranjilla (Solanum quitoense) a partir de exPlantes de yemas apicales, hipocotilos y peciolos
    Quito, 2017
    Co-Authors: Orellana Carrión, Miguel Alejandro
    Abstract:

    Naranjilla or lulo (Solanum quitoense) is a native Plant from the tropical region of the Andes. It is highly appreciated in the local market for its exotic flavor and high nutritional contents of iron, niacin, citric acid, and pectin. Like most fruit Plants, this species is vulnerable to many diseases caused by nematodes, insects, fungus and virus, resulting in important economical loses. The development of vegetative Plant Propagation strategies could promote the growth of Plants with enhanced agricultural performance. The objective of this study was to establish in vitro protocols for the regeneration of naranjilla Plants from three exPlant types: shoot tips, hypocotyls, and petioles...La naranjilla o lulo (Solanum quitoense) es una Planta frutal nativa de la región tropical andina que tiene un alto aprecio dentro del mercado culinario por el exótico sabor de su fruta y su alto contenido nutricional de hierro, niacina, ácido cítrico y pectina. Al igual que la mayoría de frutales, esta especie es susceptible a enfermedades causadas por nematodos, insectos, virus y hongos, lo que ocasiona grandes pérdidas de este cultivo. El desarrollo de nuevas estrategias de propagación vegetativa fomentaría el crecimiento de Plantas con mejor desempeño agrícola..

Mounia Khelifa - One of the best experts on this subject based on the ideXlab platform.

  • Turnip mosaic virus is a second example of a virus using transmission activation for Plant-to-Plant Propagation by aphids
    Journal of Virology, 2019
    Co-Authors: Edwige Berthelot, Marie Ducousso, Jean Luc Macia, Florent Bogaert, Volker Baecker, Gael Thébaud, Romain Gallet, Michel Yvon, Stéphane Blanc, Mounia Khelifa
    Abstract:

    Cauliflower mosaic virus (CaMV; family Caulimoviridae) responds to the presence of aphid vectors on infected Plants by forming specific transmission morphs. This phenomenon, coined transmission activation (TA), controls Plant-to-Plant Propagation of CaMV. A fundamental question is whether other viruses rely on TA. Here, we demonstrate that transmission of the unrelated turnip mosaic virus (TuMV; family Potyviridae) is activated by the reactive oxygen species H2O2 and inhibited by the calcium channel blocker LaCl3 H2O2-triggered TA manifested itself by the induction of intermolecular cysteine bonds between viral helper component protease (HC-Pro) molecules and by the formation of viral transmission complexes, composed of TuMV particles and HC-Pro that mediates vector binding. Consistently, LaCl3 inhibited intermolecular HC-Pro cysteine bonds and HC-Pro interaction with viral particles. These results show that TuMV is a second virus using TA for transmission but using an entirely different mechanism than CaMV. We propose that TuMV TA requires reactive oxygen species (ROS) and calcium signaling and that it is operated by a redox switch.IMPORTANCE Transmission activation, i.e., a viral response to the presence of vectors on infected hosts that regulates virus acquisition and thus transmission, is an only recently described phenomenon. It implies that viruses contribute actively to their transmission, something that has been shown before for many other pathogens but not for viruses. However, transmission activation has been described so far for only one virus, and it was unknown whether other viruses also rely on transmission activation. Here we present evidence that a second virus uses transmission activation, suggesting that it is a general transmission strategy.

Vargas, Johny Wesley Barbosa - One of the best experts on this subject based on the ideXlab platform.

  • Vegetative Plant Propagation sassafrás (Ocotea odorifera) (Vell.) Rohwer. / Propagação vegetativa de canela sassafrás (Ocotea odorifera) (Vell.) Rohwer
    Brazilian Journals Publicações de Periódicos e Editora Ltda., 2018
    Co-Authors: Vargas, Johny Wesley Barbosa
    Abstract:

    The Ocotea odorifera (Vell.) Rohwer (Sassafras cinnamon) is a tree species of interest for conservation and production. It is endemic to Brazil and since 1992 is part of the official list of Brazilian species threatened with extinction. Due to its limitations on reproduction in a sexual form, vegetative Propagation is a promising alternative, since it allows a rapid and homogeneous multiplication of its propagules. They were tested as techniques of microPropagation, cutting, and root grafting to identify a more efficient way to carry out a vegetative Propagation of the species. After an evaluation, it is possible to verify a great limitation as to the application of any technique for a cinnamon sassafras is an oxidation of the exPlant, because when it occurs, it prevents the development of the propagule. A microPropagation and root grafting presented the highest rates of development. A microPropagation although promising depends on specific measures for its execution as a suitable structure and skilled labor, in addition to its high cost for installation. Root grafting was, among all techniques tested and presented, an index of development and greater application in different spheres, for small producers, companies or other interested parties. Still, grafting might be the technique with less for an installation, although it requires a lot of skill for an execution.

Miguel Alejandro - One of the best experts on this subject based on the ideXlab platform.

  • regeneracion in vitro de naranjilla solanum quitoense a partir de exPlantes de yemas apicales hipocotilos y peciolos
    2017
    Co-Authors: Orellana Carrion, Miguel Alejandro
    Abstract:

    Naranjilla or lulo (Solanum quitoense) is a native Plant from the tropical region of the Andes. It is highly appreciated in the local market for its exotic flavor and high nutritional contents of iron, niacin, citric acid, and pectin. Like most fruit Plants, this species is vulnerable to many diseases caused by nematodes, insects, fungus and virus, resulting in important economical loses. The development of vegetative Plant Propagation strategies could promote the growth of Plants with enhanced agricultural performance. The objective of this study was to establish in vitro protocols for the regeneration of naranjilla Plants from three exPlant types: shoot tips, hypocotyls, and petioles...