Abstract
The objectives of this work were to study the structure of the vegetative body of Lophophytum mirabile subsp. bolivianum (Wedd.) B. Hansen, to analyze the change on roots of Anadenanthera colubrina var. cebil (Griseb.) Altschul when they are infected by this parasitic plant, and to identify the anatomical changes produced by that parasitism. L. mirabile subsp. bolivianum plants are formed by a spheroidal-narrower underground vegetative body or tuber, that externally has a dark warty surface;epidermis, stomata or trichomes are lacking. The central matrix of tuber consists of reserving parenchyma and vascular bundles. Parasitic cells located at the level of root cambium initiate the tuber formation. On the infected root of A. colubrina var.cebil, the identity of radial and axial growth of the secondary system are lost. This leads to the formation of xylem loops that affect the xylem transport and root development, which stops length growth and develops a woody gall. Infection of L. mirabile subsp. bolivianum causes profound anatomical changes in timber developing of A. colubrina var. cebil, which favor the parasite success.
Highlights
The objectives of this work were to study the structure of the vegetative body of Lophophytum mirabile subsp. bolivianum (Wedd.) B
To analyze the change on roots of Anadenanthera colubrina var. cebil (Griseb.) Altschul when they are infected by this parasitic plant, and to identify the anatomical changes produced by that parasitism
L. mirabile subsp. bolivianum plants are formed by a spheroidalnarrower underground vegetative body or tuber, that externally has a dark warty surface;epidermis, stomata or trichomes are lacking
Summary
Para el presente estudio se seleccionaron 19 ejemplares de L. mirabile subsp. bolivianum que parasitaban A. colubrina var. cebil. Es una especie de amplia distribución en las provincias del norte de Argentina (Catamarca, Chaco, Corrientes, Córdoba, Entre Ríos, Formosa, Jujuy, Misiones, Salta, Santiago del Estero y Tucumán), además del sur de Bolivia y Paraguay (Alto Paraguay, Amambay, Caaguazú, Canindeyú, Central, Concepción, Cordillera, Paraguarí, Presidente Hayes y San Pedro), Brasil (Paraná y Rio Grande Do Sul). Lophophytum mirabile crece exclusivamente en la región de Jujuy y Salta en Argentina, entre los 450 y 600 m de altitud. Para los estudios anatómicos se recolectaron raíces sanas e infestadas del árbol y el túber e inflorescencias del parásito, que fueron fijados en FAA (alcohol 70o, ácido acético y formol, 90:5:5). Antes de efectuar cada corte, se aplicó con pincel una solución acuosa de detergente neutro al 3% a la superficie expuesta del material impregnado en parafina; este líquido funciona de agente humectante y posibilita el deslizamiento de la sección sobre la superficie de la cuchilla. Las escamas se desprenden cuando las flores maduran (fig. 1 j, k)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
