Biology Forum Botany Discussion What makes perennial plants so special?

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    • #4090
      Nirvana
      Participant

      I have been thinking about this problem for years. Why are perennial plants the only species that have indeterminate growth? Why doesn’t the Hayflick Limit theory apply on them?

    • #43784
      kiekyon
      Participant

      i’m not sure, but i think it has something to do with centriol

    • #43822
      MrMistery
      Participant

      What the heck is the heyflick limit theory?

    • #43824
      Nirvana
      Participant

      Hayflick Limit is the theory proposed by Dr. Leonard Hayflick in the early 60’s.
      Basically it says that cell division has a limited amount of times. For example, human cell can go under about 50 times of cell division, then it will die.

      The following is a link you can click on and read the theory.
      http://www.totse.com/en/fringe/life_extension/age5.html

      However, this theory doesn’t aplly on perennial plants, otherwise they wouldn’t be able to have indeterminate growth. Theoretically if perennial plants are healthy and there are no environmental traumas, they can live on as long as they are capable of, they are nearly immortal.

    • #43844
      kiekyon
      Participant

      well, i’ve heard though i’m not 100% sure
      the number of time a cell can divide depend on the centriol
      each time it divide, centriol become shorter until it disappear
      plants dont have centriol
      however u may want to make further research on this
      as i say i’m not 100% sure

    • #43856
      mith
      Participant

      lol, not totse. I love that site but it’s usually very hard to tell the wackos from the geniuses(genii?)

    • #43864
      Nirvana
      Participant

      I have heard about the centriol gets shorter after each cell division, but I didn’t know that plant cell doesn’t have centriol (I don’t remember)

      Then what about other plant species?? They all have life limit as any other animal does. That’s why it made me so confused, why perennial plants are so special among all living creatures on this planet??

    • #43964
      Linn
      Participant
      quote :

      Nirvana: why perennial plants are so special among all living creatures on

      how about more specifically, some trees are special. 🙂

    • #43986
      MrMistery
      Participant

      hate to burst your bubble, but a plant cell doesn’t even have centrioles. If you distroy the centriols in an animal cell with a laser, a spindle will still form and it will undergo mitosis normally. The role of centrioles is not yet known. Most opionions are that centrioles help support the organising of microtubules. However, more data is required.

      Also, the rule with the 50 divisions/cell only applies to some cell in the human body. For example, stem cells can divide undefinetly. So can the meristems of plants. It’s just that in cells that only live one year, they can only reach a certain hight.

    • #45773
      kabuto
      Participant

      not centriol, it should be telomere

    • #45815
      kiekyon
      Participant

      ah yes, sorry i have mistaken between the two
      take a look at this

      http://cropandsoil.oregonstate.edu/classes/css430/more_on_telomeres.htm

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