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Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions

Abiotic stress factors are the main limitation to plant growth and yield in agriculture. Orange sweet potatoes may become major sources of carotenoids in the diet, but the extent of environmental and genetic influences on plant carotenoid biosynthesis are poorly understood. Carotenoid biosynthesis i...

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Main Authors:	Othman, Rashidi, Kammona, Suhair, Jaswir, Irwandi, Jamal, Parveen
Format:	Conference or Workshop Item
Language:	English
Published:	2015
Subjects:	S Agriculture (General) SB Plant culture TP248.13 Biotechnology
Online Access:	http://irep.iium.edu.my/47248/1/PAPER5.pdf http://irep.iium.edu.my/47248/ http://www.acb2015.my/web/
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spelling	my.iium.irep.472482021-07-23T03:50:32Z http://irep.iium.edu.my/47248/ Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions Othman, Rashidi Kammona, Suhair Jaswir, Irwandi Jamal, Parveen S Agriculture (General) SB Plant culture TP248.13 Biotechnology Abiotic stress factors are the main limitation to plant growth and yield in agriculture. Orange sweet potatoes may become major sources of carotenoids in the diet, but the extent of environmental and genetic influences on plant carotenoid biosynthesis are poorly understood. Carotenoid biosynthesis is regulated by several factors such as water, light, pathogen, salinity, nutrients and is susceptible to geometric isomerisation in the presence of oxygen, light and heat which causes colour loss and oxidation. The main problems associated with carotenoid accumulation arise from the inherent instability of pigments. In this study carotenoid biogenesis is investigated in sweet potato callus culture as a potential model system for carotenoids biogenesis by analysing the effects of environmental stress agents such as NaCl (for salt tolerance), PEG (for drought tolerance), salicylic acid (for pathogen stress or disease resistance) and nutrient strength towards carotenoid content and composition. Results of this study revealed that the bioactive compounds detected in orange sweet potato callus were α-carotene, β-carotene, lutein and zeaxanthin. Not surprisingly, the response of sweet potato callus culture to such environments appeared to be highly light dependent. Another factor is the activity of functional enzymes and candidate enzymes that regulate carotenoid biosynthesis which will determine type and quantity of individual carotenoids. By understanding the environmental factors that affected carotenoid biosynthesis, it should be possible to enhance the amount and type of carotenoid that accumulates in sweet potato tubers. In conclusion, in vitro callus culture is suggested as a successful new alternative approaches to enhance or enrich certain carotenoids through controlled environment. 2015 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/47248/1/PAPER5.pdf Othman, Rashidi and Kammona, Suhair and Jaswir, Irwandi and Jamal, Parveen (2015) Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions. In: Asian Congress on Biotechnology 2015 (ACB 2015), 15th-19th Nov 2015, Istana Hotel, Kuala Lumpur. (Unpublished) http://www.acb2015.my/web/
institution	Universiti Islam Antarabangsa Malaysia
building	IIUM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	International Islamic University Malaysia
content_source	IIUM Repository (IREP)
url_provider	http://irep.iium.edu.my/
language	English
topic	S Agriculture (General) SB Plant culture TP248.13 Biotechnology
spellingShingle	S Agriculture (General) SB Plant culture TP248.13 Biotechnology Othman, Rashidi Kammona, Suhair Jaswir, Irwandi Jamal, Parveen Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
description	Abiotic stress factors are the main limitation to plant growth and yield in agriculture. Orange sweet potatoes may become major sources of carotenoids in the diet, but the extent of environmental and genetic influences on plant carotenoid biosynthesis are poorly understood. Carotenoid biosynthesis is regulated by several factors such as water, light, pathogen, salinity, nutrients and is susceptible to geometric isomerisation in the presence of oxygen, light and heat which causes colour loss and oxidation. The main problems associated with carotenoid accumulation arise from the inherent instability of pigments. In this study carotenoid biogenesis is investigated in sweet potato callus culture as a potential model system for carotenoids biogenesis by analysing the effects of environmental stress agents such as NaCl (for salt tolerance), PEG (for drought tolerance), salicylic acid (for pathogen stress or disease resistance) and nutrient strength towards carotenoid content and composition. Results of this study revealed that the bioactive compounds detected in orange sweet potato callus were α-carotene, β-carotene, lutein and zeaxanthin. Not surprisingly, the response of sweet potato callus culture to such environments appeared to be highly light dependent. Another factor is the activity of functional enzymes and candidate enzymes that regulate carotenoid biosynthesis which will determine type and quantity of individual carotenoids. By understanding the environmental factors that affected carotenoid biosynthesis, it should be possible to enhance the amount and type of carotenoid that accumulates in sweet potato tubers. In conclusion, in vitro callus culture is suggested as a successful new alternative approaches to enhance or enrich certain carotenoids through controlled environment.
format	Conference or Workshop Item
author	Othman, Rashidi Kammona, Suhair Jaswir, Irwandi Jamal, Parveen
author_facet	Othman, Rashidi Kammona, Suhair Jaswir, Irwandi Jamal, Parveen
author_sort	Othman, Rashidi
title	Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
title_short	Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
title_full	Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
title_fullStr	Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
title_full_unstemmed	Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
title_sort	effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions
publishDate	2015
url	http://irep.iium.edu.my/47248/1/PAPER5.pdf http://irep.iium.edu.my/47248/ http://www.acb2015.my/web/
_version_	1706956546132410368
score	13.211869

Effect of abiotic stress on carotenoids accumulation in orange sweet potato calluses under light and dark conditions

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