Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)

Banana is often grown in coastal-regions, and while known for its sensitivity towards seawater, little is documented on the effect of sea-salt on the growth, physiology and metal homeostasis. Here we report that banana plantlets exposed to sea-salt at extreme (average seawater concentration; 52.7 dS...

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Main Authors: Mazumdar, Purabi, Lau, Su Ee, Singh, Pooja, Takhtgahi, Hossein Mirzaei, Harikrishna, Jennifer Ann
Format: Article
Published: Springer 2019
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Online Access:http://eprints.um.edu.my/16729/
https://doi.org/10.1007/s12298-019-00659-3
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spelling my.um.eprints.167292020-03-17T04:53:25Z http://eprints.um.edu.my/16729/ Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan) Mazumdar, Purabi Lau, Su Ee Singh, Pooja Takhtgahi, Hossein Mirzaei Harikrishna, Jennifer Ann Q Science (General) QH Natural history Banana is often grown in coastal-regions, and while known for its sensitivity towards seawater, little is documented on the effect of sea-salt on the growth, physiology and metal homeostasis. Here we report that banana plantlets exposed to sea-salt at extreme (average seawater concentration; 52.7 dS m−1), severe (28.5 dS m−1) or moderate (10.2 dS m−1) salinity levels had reduced root length (2.0–6.0-fold), plant height (1.2–1.6-fold), leaf number (2.0–2.3-fold) and leaf area (3.3–4.0-fold) compared to control plantlets. Degradation of pigments (total chlorophyll: 1.3–12.3-fold, chlorophyll a: 1.3–9.2-fold; chlorophyll b: 1.3–6.9-fold lower and carotenoids: 1.4–3.7-fold lower) reflected vulnerability of photosystems to salt stress. Relative water content showed a maximum decrease of 1.5-fold in salt stress. MDA analysis showed sea-salt exposure triggers 2.3–3.5-fold higher lipid peroxidation. Metal content analysis showed a 73-fold higher Na value from roots exposed to extreme salinity compared to control plantlets. While phenotype was clearly affected, moderate salinity showed no significant alteration of macro (N, P, K and Ca) and micro (Fe, Mn and Cu) metal content. The antioxidant enzymes: SOD (3.2-fold), CAT (1.7-fold) and GR (6-fold) showed higher activity at moderate salinity level compared to control plantlets but lower activity at severe (SOD: 1.3-fold; CAT: 1.5-fold; GR: 2-fold lower) and extreme seawater salinity (SOD: 1.5; CAT: 1.9; GR: 1.3-fold lower). Mild changes in growth and physiology at sea-salt levels equivalent to moderate seawater flooding, indicate that banana will survive such flooding, while extreme seawater inundation will be lethal. This data provides a reference for future salinity-mediated work in banana. © 2019, Prof. H.S. Srivastava Foundation for Science and Society. Springer 2019 Article PeerReviewed Mazumdar, Purabi and Lau, Su Ee and Singh, Pooja and Takhtgahi, Hossein Mirzaei and Harikrishna, Jennifer Ann (2019) Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan). Physiology and Molecular Biology of Plants, 25 (3). pp. 713-726. ISSN 0971-5894 https://doi.org/10.1007/s12298-019-00659-3 doi:10.1007/s12298-019-00659-3
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QH Natural history
spellingShingle Q Science (General)
QH Natural history
Mazumdar, Purabi
Lau, Su Ee
Singh, Pooja
Takhtgahi, Hossein Mirzaei
Harikrishna, Jennifer Ann
Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
description Banana is often grown in coastal-regions, and while known for its sensitivity towards seawater, little is documented on the effect of sea-salt on the growth, physiology and metal homeostasis. Here we report that banana plantlets exposed to sea-salt at extreme (average seawater concentration; 52.7 dS m−1), severe (28.5 dS m−1) or moderate (10.2 dS m−1) salinity levels had reduced root length (2.0–6.0-fold), plant height (1.2–1.6-fold), leaf number (2.0–2.3-fold) and leaf area (3.3–4.0-fold) compared to control plantlets. Degradation of pigments (total chlorophyll: 1.3–12.3-fold, chlorophyll a: 1.3–9.2-fold; chlorophyll b: 1.3–6.9-fold lower and carotenoids: 1.4–3.7-fold lower) reflected vulnerability of photosystems to salt stress. Relative water content showed a maximum decrease of 1.5-fold in salt stress. MDA analysis showed sea-salt exposure triggers 2.3–3.5-fold higher lipid peroxidation. Metal content analysis showed a 73-fold higher Na value from roots exposed to extreme salinity compared to control plantlets. While phenotype was clearly affected, moderate salinity showed no significant alteration of macro (N, P, K and Ca) and micro (Fe, Mn and Cu) metal content. The antioxidant enzymes: SOD (3.2-fold), CAT (1.7-fold) and GR (6-fold) showed higher activity at moderate salinity level compared to control plantlets but lower activity at severe (SOD: 1.3-fold; CAT: 1.5-fold; GR: 2-fold lower) and extreme seawater salinity (SOD: 1.5; CAT: 1.9; GR: 1.3-fold lower). Mild changes in growth and physiology at sea-salt levels equivalent to moderate seawater flooding, indicate that banana will survive such flooding, while extreme seawater inundation will be lethal. This data provides a reference for future salinity-mediated work in banana. © 2019, Prof. H.S. Srivastava Foundation for Science and Society.
format Article
author Mazumdar, Purabi
Lau, Su Ee
Singh, Pooja
Takhtgahi, Hossein Mirzaei
Harikrishna, Jennifer Ann
author_facet Mazumdar, Purabi
Lau, Su Ee
Singh, Pooja
Takhtgahi, Hossein Mirzaei
Harikrishna, Jennifer Ann
author_sort Mazumdar, Purabi
title Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
title_short Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
title_full Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
title_fullStr Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
title_full_unstemmed Impact of sea-salt on morpho-physiological and biochemical responses in banana (Musa acuminata cv. Berangan)
title_sort impact of sea-salt on morpho-physiological and biochemical responses in banana (musa acuminata cv. berangan)
publisher Springer
publishDate 2019
url http://eprints.um.edu.my/16729/
https://doi.org/10.1007/s12298-019-00659-3
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