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Life of Plants

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Why Is the Life of Plants Far Longer Than Animals?

Recently, researchers from the Institution of Belgium VIB and Ghent University have noted that they found a new step in the complex regulation of plant stem cells. Data show that some tissue stem cells in plant roots are less sensitive to DNA damage. These cells preserve original integrated DNA copy and can be used to replace damaged cells when necessary. 
Although animals are dependent on a similar mechanism, plants are possible to take advantage of this mechanism in a more optimal way. This may explain why many plants can survive for hundreds of years, which is quite rare for the animals concerned. Plants, with a static organizer, depend on the newly generated cells, in terms of growth and development. A small part of specialized cells existed in plant growth axis drive the process, which enables these stem cells can be divided at a high frequency. Such cells have a unique feature: while original mother cells are maintaining stem cell activity, daughter cells can acquire a certain specialization. Taking Creative Peptides as an example, it is specialized in the process development and the manufacturing of bioactive peptides (reference), which combines the plants research too.
In addition to these stem cells, the roots of plants also contain a number of tissue cells; these tissue cells are divided at a lower frequency about three to ten times. This is why they are generally referred to as the quiescent center cells. They can control the activity of surrounding stem cells and replace them when necessary. Scientists indicated that there could be a molecular network for regulating stem cells. Over the past twenty years, research on stem cells and their controlling behavior has always been the focus of worldwide scientists, however, they still don’t know how quiescent cells and actively dividing cells co-exist so closely, as well as the underlying mechanism of this silent feature. 
In this latest study, a group of scientists identified a new molecular network, for the purpose of enhancing understanding on the regulation and activity of stem cells. While as for this new discovery, a newly discovered protein called transcription factor ERF115 has raised increasing attention in the public. Scientists have confirmed that these tissues can hardly be split because ERF115’s normal activity was inhibited. Additionally, when these cells need to be divided and then replace damaged surrounding stem cells, ERF115 will be activated. Then ERF115 will stimulate the generation of plant sulfur peptide hormone (Phytosulfokine), which in turn activates effective cell division.
Although stem cells played an important role in promoting plants growth and development, a problem related to the regulation of tight molecules still needs to be answered. Therefore, ERF115 plant sulfur peptide hormone’s network acts as a back-up system for damaged stem cell. Anyway, maybe modern biotechnology will give us a reasonable answer. 

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