Control of elicitor-induced oxidative burst by abscisic acid associated with growth of Saccharina japonica (Phaeophyta, Laminariales) sporophytes

Shimizu, Kazuki; Uji, Toshiki; Yasui, Hajime; Mizuta, Hiroyuki

Control of elicitor-induced oxidative burst by abscisic acid associated with growth of Saccharina japonica (Phaeophyta, Laminariales) sporophytes

Shimizu, Kazuki; Uji, Toshiki; Yasui, Hajime et al.

Journal of Applied Phycology, 2018, 30(2), 1371-1379

Permalink : https://hdl.handle.net/2115/73421

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アクセス権	open access
URI	https://hdl.handle.net/2115/73421
タイトル	Control of elicitor-induced oxidative burst by abscisic acid associated with growth of Saccharina japonica (Phaeophyta, Laminariales) sporophytes
著者	Shimizu, Kazuki ; Uji, Toshiki ; Yasui, Hajime ; Mizuta, Hiroyuki
著者名 Shimizu, Kazuki
e-Rad_Researcher 00760597 著者名 Uji, Toshiki
e-Rad_Researcher 00200494 著者名 Yasui, Hajime
e-Rad_Researcher 00250499 著者名 Mizuta, Hiroyuki
言語	英語
キーワード	Abscisic acid
	Elicitor
	Growth
	lodoperoxidase
	Kelp
	Oxidative burst
発行日	2018-04
出版者	Springer
収録物名	Journal of Applied Phycology
巻(号)	30(2)
ページ	1371-1379
抄録	In this study, the oligoguluronate elicitor-induced oxidative burst (OB) was monitored continuously in young and mature Saccharina japonica sporophytes based on luminol chemiluminescence using a photon counter. The iodoperoxidase (IPO) activity, abscisic acid (ABA), and polyphenol contents were also compared in the different growth stages. The elicitor-induced OB occurred within 1 min and reached its maximum in 15-20 min after treatment in all growth stages. The active elicitor-induced OB was stronger in the young sporophytes than the older sporophytes. The IPO activity in the different growth stages also exhibited a similar pattern to the elicitor-induced OB. These results suggest that the elicitor-induced OB and the subsequent high haloperoxidase activity comprise a major defence mechanism in young sporophytes. By contrast, ABA accumulated with the growth of the sporophytes. Interestingly, ABA treatment suppressed the elicitor-induced OB during growth and enhanced the elicitor-independent IPO activity even in the young sporophytes. In addition, the polyphenol content was higher in the older sporophytes than the younger sporophytes. These observations show that dramatic changes occur in the characteristic defences against biotic stresses as the sporophyte grows, as well as suggesting that ABA is closely linked with these changes. Moreover, the IPO activity recovered slightly in the sorus, which is the reproductive tissue, thereby suggesting that a higher ABA content increases the defence activity and the success of reproduction.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a post-peer-review, pre-copyedit version of an article published in Journal of Applied Phycology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10811-017-1320-2
PISSN	0921-8971
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10811-017-1320-2