(Peer Review + Similarity) The growth responses and antioxidant capabilities of melinjo (Gnetum gnemon L.) in different durations of drought stress

Siswoyo, Tri Agus and Arum, Laras Sekar and Sanjaya, Bella Rhea Lavifa and Aisyah, Zahela Siti (2021) (Peer Review + Similarity) The growth responses and antioxidant capabilities of melinjo (Gnetum gnemon L.) in different durations of drought stress. Annals of Agricultural Sciences.

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Abstract

Melinjo (Gnetum gnemon L.) is a beneficial agroforestry plant that contains antioxidant compounds broadly stud- ied as a natural source in pharmaceutical and nutraceutical uses. The antioxidant compounds benefit human health and plant to develop defense mechanisms under environmental stresses, such as drought stress. This study aims to evaluate the defense mechanism of melinjo under drought stress. Polyethylene glycol (PEG) was used to simulate drought stress to melinjo seedlings for 5, 10, 20, and 40 days compared to zero-day control with- out PEG. The inhibition and detoxification activities of 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, superoxide radical, and superoxide dismutase (SOD) were determined to evaluate antioxidant capabilities during drought stress. Lipid peroxidation and hydrogen peroxide (H2O2) contents were also analyzed to evaluate the level of cellular damage during drought stress. The seedling's growth was significantly reduced as a response to the longer duration of drought stress treatment. On the contrary, the level of lipid peroxidation and H2O2 were increased, followed by the escalation of antioxidant activities. This result indicates that many antioxidant compounds act together to develop a defense mechanism in melinjo seedlings, and the different duration of drought stresses influences their capabilities.

Item Type:	Peer Review
Subjects:	600 Technology and Applied Science > 630 Farm, Farming
Divisions:	Faculty of Agriculture > Department of Agrotechnology (S1)
Depositing User:	Laras Sekar Arum
Contact Email Address:	larassekararum@unmuhjember.ac.id
Date Deposited:	15 Feb 2022 05:02
Last Modified:	06 Apr 2022 01:29
URI:	http://repository.unmuhjember.ac.id/id/eprint/12365

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