Dear Sanjoy, thank you for sharing this very interesting technical question with the RG community. Yes, such effects have been reported for certain nanomaterials (e.g. SiO2, TiO2, and Ag NPs). In this context, please have a look at the following potentially useful articles:
Effect Of Pre-Sowing Seed Treatments With Silicon Nanoparticles On Germinability Of Sunflower (Helianthus Annuus)
Article Effect Of Pre-Sowing Seed Treatments With Silicon Nanopartic...
Fortunately this paper has been posted by the authors as public full text on RG. Thus you can freely download it as pdf file.
Also please see the following relevant articles:
Seed priming with titanium dioxide nanoparticles enhances seed vigor, leaf water status, and antioxidant enzyme activities in maize (Zea maysL.) under salinity stress
Article Seed priming with titanium dioxide nanoparticles enhances se...
and
Nanopriming technology for enhancing germination and starch metabolism of aged rice seeds using phytosynthesized silver nanoparticles
The third paper has been published Open Access (please see attached pdf file). I hope this helps answering your question. Good luck with your research and best wishes, Frank Edelmann
There is no any report found in this regard, but it might be responsible for the alteration of base pairs of the genetic materials of an organism. Here it is too hurry to say about the probable changes in the base pairs of DNA/ RNA by nano particles. Lets wait some time and see what will be the response of genetic engineering expert in this topic.