tag:blogger.com,1999:blog-67021932325574544572024-02-08T10:46:21.486-08:00Microorganismos que afectan a las plantasAnonymoushttp://www.blogger.com/profile/15099768222270553533noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6702193232557454457.post-64312369186978141522013-03-01T10:55:00.001-08:002013-03-01T10:55:19.393-08:00Microorganismos que afectan a las plantas<!--[if gte mso 9]><xml>
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Microorganismos patógenos:</div>
<div class="MsoNormal" style="text-align: justify;">
Estos organismos son de mucha
importancia en los cultivos, ya que causan enfermedades, y provocan serios
daños económicos, están comprendidos, por hongos, virus, nematodos y bacterias.</div>
<div class="MsoNormal" style="text-align: justify;">
Los hongos son dependientes de
una planta hospedera para poder obtener su alimento y poder reproducirse, además
son organismos filamentosos, y solo los podemos ver por microscopio, pero aun así
son más grandes que las bacterias. En la agricultura son controlados por
fungicidas, estos desarrollan estructuras hifa, micelio, esporas, talo</div>
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Las bacterias son unicelulares, microscópicas
y no producen esporas, poseen estructuras en forma viscosas, la cual no pueden
producir su propia energía por lo que dependen de una planta hospedera, entre
los principales géneros tenemos Agrobacterium, Erwinia, Pseudomonas,
Xantomonas.</div>
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Los virus no son capaces de
desarrollarse fuera de la planta, por lo que tienen que permanecer en ella, además
para detectarlos se utilizan métodos avanzados, no existen control contra
ellos. Los virus se programan mayormente por medios mecánicos e insectos y se
diseminan por medio de plantas infectadas.</div>
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Los nematodos comúnmente los
encontramos en los suelos, son los organismos más grandes, son en forma de
gusanos redondos no segmentados, están compuestos en un alto porcentaje de agua
y son muy selectivos con sus hospederos.</div>
<a href="http://agricultura.uprm.edu/sea/clinica/CLDIAEnfPlan.pdf" target="_blank">http://agricultura.uprm.edu/sea/clinica/CLDIAEnfPlan.pdf</a>Anonymoushttp://www.blogger.com/profile/15099768222270553533noreply@blogger.com2