Conclusions
The study of protein import in plants is beginning to yield insight into not only the similarities with other kingdoms, but also the interesting differences that we have described throughout this Chapter. Plants are essential to all life on our planet and are the foundation for our food chain. Protein import processes and their role in development and environmental responses are essential to our understanding of plant biology, an important goal in itself. As our knowledge increases about nuclear protein import in plants, contributions to our general understanding of these processes in all organisms will increase.
Some of the important areas to be addressed in the future include:
-
1.
The complete characterization of import components from higher plants as has been underway
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2.
Answers to the question, is there an importin β-independent pathway in plants?
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3.
The further investigation of plant NPCs
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4.
Taking full advantage of pathogens such as Agrobacterium and viruses in understanding pathogenesis and import and export pathways
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5.
A focus on the regulation of import in essential developmental pathways in plants such as photomorphogensis, stress responses, and perhaps phytohormone signaling
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6.
The molecular mechanism of import complex targeting to the NPCs for translocation including the development of a system to examine NLS protein movement along microtubules and a search for factors that may mediate complex association with the cytoskeleton
There is much to be learned and the future will surely present opportunities for new discovery.
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Hicks, G.R. (2005). Nuclear Import of Plant Proteins. In: Nuclear Import and Export in Plants and Animals. Molecular Biology Intelligence Unit. Springer, Boston, MA. https://doi.org/10.1007/0-387-27747-1_5
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