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Cold radiofrequency plasma treatment modifies wettability and germination speed of plant seeds.

Bormashenko E, Grynyov R, Bormashenko Y, Drori E - Sci Rep (2012)

Bottom Line: We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment.Air plasma treatment leads to the dramatic decrease in the apparent contact angle.Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Ariel University Center of Samaria, Physics Faculty, Ariel, Israel. edward@ariel.ac.il

ABSTRACT
We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment. Air plasma treatment leads to the dramatic decrease in the apparent contact angle. Moreover, the speed of germination and yield (germination rate) of seeds can be modified by preliminary plasma treatment. The change in the wetting properties of seeds is at least partially due to oxidation of their surface under plasma treatment. Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

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Time dependence of the germination speed of irradiated and non-irradiated (a) beans, (b) lentils, (c) wheat grains.
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f7: Time dependence of the germination speed of irradiated and non-irradiated (a) beans, (b) lentils, (c) wheat grains.

Mentions: The change in water imbibition caused by plasma irradiation was noticeable, but the increase in the germination speed was dramatic, as shown in Figure 7a–c. And it was more pronounced for lentils and wheat grains. The processes induced by plasma treatment of biological objects are extremely complicated (and include amongst other effects of decontamination of seeds amongst other effects1617); but it is reasonable to relate the observed drastic change in the germination speed at least partially to the plasma modification of the wetting properties of seeds, as discussed above. It should be stressed that the eventual germination rates corresponding to the saturation part of the curves presented in Figure 7a–c increased for all the kinds of seeds included in the study.


Cold radiofrequency plasma treatment modifies wettability and germination speed of plant seeds.

Bormashenko E, Grynyov R, Bormashenko Y, Drori E - Sci Rep (2012)

Time dependence of the germination speed of irradiated and non-irradiated (a) beans, (b) lentils, (c) wheat grains.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3473364&req=5

f7: Time dependence of the germination speed of irradiated and non-irradiated (a) beans, (b) lentils, (c) wheat grains.
Mentions: The change in water imbibition caused by plasma irradiation was noticeable, but the increase in the germination speed was dramatic, as shown in Figure 7a–c. And it was more pronounced for lentils and wheat grains. The processes induced by plasma treatment of biological objects are extremely complicated (and include amongst other effects of decontamination of seeds amongst other effects1617); but it is reasonable to relate the observed drastic change in the germination speed at least partially to the plasma modification of the wetting properties of seeds, as discussed above. It should be stressed that the eventual germination rates corresponding to the saturation part of the curves presented in Figure 7a–c increased for all the kinds of seeds included in the study.

Bottom Line: We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment.Air plasma treatment leads to the dramatic decrease in the apparent contact angle.Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Ariel University Center of Samaria, Physics Faculty, Ariel, Israel. edward@ariel.ac.il

ABSTRACT
We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment. Air plasma treatment leads to the dramatic decrease in the apparent contact angle. Moreover, the speed of germination and yield (germination rate) of seeds can be modified by preliminary plasma treatment. The change in the wetting properties of seeds is at least partially due to oxidation of their surface under plasma treatment. Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

Show MeSH
Related in: MedlinePlus