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AuthorBello, Adewale Suraj
AuthorAhmed, Talaat
AuthorSaadaoui, Imen
AuthorHamdi, Helmi
AuthorBen-Hamadou, Radhouane
Available date2024-03-31T06:09:29Z
Publication Date2023-12-01
Publication NameTurkish Journal of Agriculture and Forestry
Identifierhttp://dx.doi.org/10.55730/1300-011X.3155
CitationBello, A. S., BEN-HAMADOU, R. A. D. H. O. U. A. N. E., HAMDI, H., SAADAOUI, I., & AHMED, T. (2023). Heat-stress-induced changes in enzymatic antioxidant activities and biochemical processes in bell pepper (Capsicum annuum L.) seedlings. Turkish Journal of Agriculture and Forestry, 47(6), 1165-1173.
ISSN1300-011X
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85179134372&origin=inward
URIhttp://hdl.handle.net/10576/53734
AbstractHeat stress (HS) is expected to become a significant abiotic stressor with the continued rise in global temperatures, severely limiting the development and production of bell pepper (Capsicum annuum L.), especially in arid and semiarid regions. Thus, this study looked into the impact of HS on the antioxidant activity, as well as the biochemical responses of bell pepper seedlings under varying temperatures (40, 32, and 25 °C) for 5 days. The results showed that exposure to higher temperatures led to an increase in enzymatic and antioxidant processes. At 40 and 32 °C, HS led to a decrease in chlorophyll a (4.327 mg g–1 FW), b (1.710 mg g–1 FW), total chlorophyll (5.202 mg g–1 FW), and total carotene (1.092 mg g–1 FW) compared to the control at 25 °C (chlorophyll a 5.383 mg g–1 FW, chlorophyll b 2.358 mg g–1 FW, total chlorophyll 6.692 mg g–1 FW, and total carotene 1.817 mg g–1 FW). On the other hand, seedlings exposed to 32 and 40 °C showed higher antioxidant activity and 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic) acid radical scavenging activity compared to the control group, as the activity significantly increased in response to high temperatures. Similarly, the catalase activity also significantly increased in response to 40 and 32 °C compared to the control group at varying temperatures. The proline content of the stressed seedlings increased at 32 and 40 °C compared to the control at all temperatures. These results indicate that HS damages the antioxidant activity, biochemical processes, and growth of bell pepper seedlings; thus, a scientific approach is needed to mitigate the effects in arid regions like Qatar.
SponsorThis work was supported by the Qatar Foundation through one of its members, the Qatar National Research Fund for the MME award [MME01-0826-190018].
Languageen
PublisherTurkiye Klinikleri
Subjecta biochemical process
antioxidant/enzymatic activity
arid region
Bell pepper
heat stress
TitleHeat-stress-induced changes in enzymatic antioxidant activities and biochemical processes in bell pepper (Capsicum annuum L.) seedlings
TypeArticle
Pagination1165-1173
Issue Number6
Volume Number47
ESSN1303-6173
dc.accessType Full Text


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