|
== En tecidos de plantas ==
A MCP en plantas ten varias semellanzas moleculares coa [[apoptose]] animal, pero tamén ten diferenzas, as máis obvias son as derivadas da presenza dunha [[parede celular]] e a falta dun [[sistema inmunitario]] que elimine os restos da célula morta. En lugar dunha resposta inmune, a célula moribunda das plantas sintetiza substancias que a destrúen internamente e os restos quedan almacenados nun [[vacúolo]], que rompe cando a célula morre.<ref>
Programmed cell death in plants has a number of molecular similarities to animal [[apoptosis]], but it also has differences, the most obvious being the presence of a [[cell wall]] and the lack of an [[immune system]] that removes the pieces of the dead cell. Instead of an immune response, the dying cell synthesizes substances to break itself down and places them in a [[vacuole]] that ruptures as the cell dies.<ref>
{{cite journal
|vauthors=Collazo C, Chacón O, Borrás O |year = 2006
}}</ref>
InMartin "APLBonke regulatese vascularcolegas, tissueestudando identitya inplanta ''[[Arabidopsis thaliana|Arabidopsis]]",<ref>
{{cite journal
|vauthors=Bonke M, Thitamadee S, Mähönen AP, Hauser MT, Helariutta Y |year = 2003
|pmid = 14614507
|doi = 10.1038/nature02100
}}</ref> descubriron que un dos dous sistemas de transporte a longa distancia nas [[planta vascular|plantas vasculares]], o [[xilema]], consta de varios tipos celulares "cuxa diferenciación implica a deposicion de elaborados engrosamentos da parede celular e morte celular programada." Os autores salientan que os produtos da MCP en plantas xogan un importante papel estrutural.
}}</ref> Martin Bonke and his colleagues had stated that one of the two long-distance transport systems in [[vascular plants]], [[xylem]], consists of several cell-types "the differentiation of which involves deposition of elaborate [[Cell wall|cell-wall]] thickenings and programmed cell-death." The authors emphasize that the products of plant PCD play an important structural role.
As características morfolóxicas e bioquímicas da MCP foron conservadas nos [`reino (bioloxía)|reinos]] das plantas e animais.<ref>
Basic morphological and biochemical features of PCD have been conserved in both plant and animal [[Kingdom (biology)|kingdoms]].<ref>
{{cite journal
|vauthors=Solomon M, Belenghi B, Delledonne M, Menachem E, Levine A |year = 1999
|doi = 10.2307/3870871
|jstor=3870871
}} SeeVer alsotamén relatedartigos articlesrelacionados inen [http://www.plantcell.org/ ''The Plant Cell Online'']</ref> ItPorén, shouldcómpre besinalr noted,que however,tipos thatespecíficos specificde typescélulas ofde plantplantas cellslevan carrya outcabo uniqueprogramas cell-deathde programsmorte celular exclusivos. TheseEstes haveteñen commoncaracterísticas featurescomúns withcoa apoptose animal, apoptosis—forpor instance,exemplo a degradación do [[nuclearADN DNAnuclear]], degradation—butpero theytamén alsoteñen haveas theirsúas ownpropias peculiaritiespeculiaridades, suchcomo asa degradación [[Cell nucleusnúcleocelular|nuclear]] degradationdesencadeado triggeredpolo bycolapsodo thevacúolo collapseen of theelementos [[vacuole]] in [[TracheidTraqueida|trachearytraqueais]] elements of thedo xylemxilema.<ref>
{{cite journal
|vauthors=Ito J, Fukuda H |year = 2002
}}</ref>
Janneke Balk ande Christopher J. Leaver, of the Department ofda [[DepartmentUniversidade ofde PlantOxford]] Sciences,realizaron Universityinvestigacións of Oxford|Plant Sciences]],sobre [[University of Oxfordmutación]], carried out research on mutations ins theno [[mitochondrialxenoma genomemitocondrial]] ofde células de [[Sunflower|sun-flowerxirasol]] cells. ResultsOs ofseus thisresultados researchsuxiren suggestque thatas [[mitochondriamitocondria]]s playxogan theo samemesmo keypapel roleclave inna vascularMCP plantnas PCDplantas asvasculares inque othernoutras [[Eukaryote|eukaryotic]]células cellseucariotas.<ref>
{{cite journal
|vauthors=Balk J, Leaver CJ |year = 2001
}}</ref>
=== A MCP no pole impide a endogamia ===
===PCD in pollen prevents inbreeding===
DuringDurante a [[pollinationpolinización]], plantsas enforceplantas executan a [[Self-incompatibilityautoincompatibilidade inen plantsplantas|self-incompatibilityautoincompatibilidade]] ('''SI''')como asun animportante importantmecanismo meanspara toimpedir preventa [[Biological reproduction|self-fertilization]]autofecundación. ResearchAs oninvestigacións thefeitas [[corncoa poppy]]mapoula (''[[Papaver rhoeas]]'') hasrevelaron revealedque thatas [[proteinproteína]]s in thedo [[pistilpistilo]] onno cal whichcae theo [[pollenpole]] lands, interactinteraccionan withco pollenpole ande triggerdesencadean PCDunha MCP no pole incompatible in incompatible (i.e.é dicir, no pole ''selfpropio'') pollen. TheOs researchersinvestigadores, Steven G. Thomas ande Veronica E. Franklin-Tong, alsotamén foundatoparon thatque thea responseresposta involvesimplica rapida inhibitionrápida ofinhibición do crecemento do [[Pollentubo tube|pollen-tubepolínico]] growth, followedseguida byde PCDMCP.<ref>
{{cite journal
|vauthors=Thomas SG, Franklin-Tong VE |year = 2004
}}</ref>
== Nos mofos mucosos ==
==In slime molds==
The social [[Slime mould|slime mold]] ''[[Dictyostelium discoideum]]'' has the peculiarity of either adopting a predatory [[amoeboid|amoeba]]-like behavior in its [[Microorganism|unicellular]] form or coalescing into a mobile [[slug]]-like form when dispersing the [[spore]]s that will give birth to the next [[generation]].<ref>
{{cite journal
| 