Oxygen plasma modulates glucosinolate levels without affecting lipid contents and composition in Brassica napus seeds.

Rapeseed contains high levels of glucosinolates (GSLs), playing pivotal roles in defense against herbivores and pests. As their presence in rapeseed reduces the value of the meal for animal feeding, intensive efforts to reduce them produced low-seed GSL cultivars. However, there is no such variety suitable for the south part of Japan. Here, we tested the effects of cold oxygen plasma (oxygen CP) on seed germination and GSL and lipid content, in 3 rapeseed cultivars. According to the cultivars, oxygen CP slightly stimulated seed germination and modified the GSL levels, and decreased GSL levels in Kizakinonatane but increased those in Nanashikibu. In contrast, it negligibly affected the lipid content and composition in the 3 cultivars. Thus, oxygen CP modulated seed GSL levels without affecting seed viability and lipid content. Future optimization of this technique may help optimize rapeseed GSL content without plant breeding. © The Author(s) 2021. Published by Oxford University Press on behalf of Japan Society for Bioscience, Biotechnology, and Agrochemistry.

Citation

Akiko Maruyama-Nakashita, Yohei Ishibashi, Kyotaro Yamamoto, Liu Zhang, Tomomi Morikawa-Ichinose, Sun-Ju Kim, Nobuya Hayashi. Oxygen plasma modulates glucosinolate levels without affecting lipid contents and composition in Brassica napus seeds. Bioscience, biotechnology, and biochemistry. 2021 Nov 24;85(12):2434-2441

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PMID: 34506620

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