Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress

Selection and utilization of plants with high salt tolerance can be efficient to rapidly construct or restore the vegetation of the tropical coral islands. Here, we investigated the response of Guettarda speciosa, a typical tropical coastal plant, to salt stress. Different morphological, physiologic...

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Autores principales:	Xiaoying Li, Dongming Liu, Jun Wang, Shuguang Jian
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Tropical coral islands Guettarda speciosa Salt tolerance ability Morphoanatomical anatomy Biochemical characteristics Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/a08b9496206248deae6f5b18ebc99ad8
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spelling	oai:doaj.org-article:a08b9496206248deae6f5b18ebc99ad82021-11-10T04:27:54ZMorphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress2351-989410.1016/j.gecco.2021.e01887https://doaj.org/article/a08b9496206248deae6f5b18ebc99ad82021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2351989421004376https://doaj.org/toc/2351-9894Selection and utilization of plants with high salt tolerance can be efficient to rapidly construct or restore the vegetation of the tropical coral islands. Here, we investigated the response of Guettarda speciosa, a typical tropical coastal plant, to salt stress. Different morphological, physiological and biochemical changes in G. speciosa plants after being subjected to NaCl stress based on the salt content of the reference seawater were studied. The results showed that G. speciosa can be tolerant to 25 g L−1 NaCl which corresponds to 2.5% salt content of seawater. A series of adaptive mechanisms were triggered to cope with salt-stress, including the increase in the thickness of leaf epidermis and palisade tissue to limit water loss, changes in photosynthetic pigments, and antioxidant defense mechanisms. Osmoregulatory substances and antioxidant enzymes worked together to cope with membrane lipid peroxidation caused by the accumulation of reactive oxygen species under salt stress and maintain the stability of osmotic potentials. Our findings indicated that G. speciosa has a strong salt tolerance but probably could not tolerate prolonged seawater immersion, which limit its coastal distribution. Therefore, G. speciosa can be considered for vegetation construction and ecological restoration in tropical coral islands such as those in South China Sea.Xiaoying LiDongming LiuJun WangShuguang JianElsevierarticleTropical coral islandsGuettarda speciosaSalt tolerance abilityMorphoanatomical anatomyBiochemical characteristicsEcologyQH540-549.5ENGlobal Ecology and Conservation, Vol 32, Iss , Pp e01887- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Tropical coral islands Guettarda speciosa Salt tolerance ability Morphoanatomical anatomy Biochemical characteristics Ecology QH540-549.5
spellingShingle	Tropical coral islands Guettarda speciosa Salt tolerance ability Morphoanatomical anatomy Biochemical characteristics Ecology QH540-549.5 Xiaoying Li Dongming Liu Jun Wang Shuguang Jian Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
description	Selection and utilization of plants with high salt tolerance can be efficient to rapidly construct or restore the vegetation of the tropical coral islands. Here, we investigated the response of Guettarda speciosa, a typical tropical coastal plant, to salt stress. Different morphological, physiological and biochemical changes in G. speciosa plants after being subjected to NaCl stress based on the salt content of the reference seawater were studied. The results showed that G. speciosa can be tolerant to 25 g L−1 NaCl which corresponds to 2.5% salt content of seawater. A series of adaptive mechanisms were triggered to cope with salt-stress, including the increase in the thickness of leaf epidermis and palisade tissue to limit water loss, changes in photosynthetic pigments, and antioxidant defense mechanisms. Osmoregulatory substances and antioxidant enzymes worked together to cope with membrane lipid peroxidation caused by the accumulation of reactive oxygen species under salt stress and maintain the stability of osmotic potentials. Our findings indicated that G. speciosa has a strong salt tolerance but probably could not tolerate prolonged seawater immersion, which limit its coastal distribution. Therefore, G. speciosa can be considered for vegetation construction and ecological restoration in tropical coral islands such as those in South China Sea.
format	article
author	Xiaoying Li Dongming Liu Jun Wang Shuguang Jian
author_facet	Xiaoying Li Dongming Liu Jun Wang Shuguang Jian
author_sort	Xiaoying Li
title	Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
title_short	Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
title_full	Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
title_fullStr	Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
title_full_unstemmed	Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress
title_sort	morphological, biochemical and physiological responses of a tropical coastal plant guettarda speciosa to salt stress
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/a08b9496206248deae6f5b18ebc99ad8
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_version_	1718440679794802688

Morphological, biochemical and physiological responses of a tropical coastal plant Guettarda speciosa to salt stress

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