Physiological and biochemical responses to salt stress in the mangrove, Bruguiera gymnorrhiza

Takemura, Tamiko; Hanagata, Nobutaka; Sugihara, Koichi; Baba, Shigeyuki; Karube, Isao; Dubinsky, Zvy

doi:10.1016/s0304-3770(00)00106-6

Cited by 219 publications

(139 citation statements)

References 29 publications

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“…1.). CHL degrades depending on the degree of salt levels in the soil solution, especially in extreme salt stress (10 dS m -1 ) (Giri et al, 2003), causing to reduce net photosynthetic rate, especially in extreme salt stress (Takemura et al, 2000). Similar results were reported by Turan et al (2007) with lentil plants.…”

Section: Chlorophyll Concentrationssupporting

confidence: 82%

Effects of Salt Stress on Plant Growth, Nutrient Partitioning, Chlorophyll Content, Leaf Relative Water Content, Accumulation of Osmolytes and Antioxidant Compounds in Pepper (Capsicum annuum L.) Cultivars

Hand

Taffouo

Nouck

et al. 2017

Not Bot Horti Agrobo

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The salinity of soil is among the most important abiotic stresses which limit agricultural productivity worldwide. The effects of salinity on growth, nutrient partitioning, chlorophyll, leaf relative water content, osmolytes accumulation and antioxidant compounds of pepper (Capsicum annuum L.) cultivars ('Granada', 'Goliath' and 'Nobili'), widely used in Cameroon, were investigated. Plants were subjected to four levels of NaCl (0, 50, 100 and 200 mM) at early seedling growth stage of plant development. Application of NaCl treatment led to a significant increase in total soluble sugars, proline, soluble proteins, total free amino acids content, peroxydase and superoxide dismutase activity and total phenolic content in salt-tolerant 'Granada' and 'Nobili' compared to salt-sensitive 'Goliath' and untreated plants, on the contrary, decreased in root dry weight, shoot dry weight, number of leaves, shoot length, stem diameter, total leaf area, chlorophyll and leaf relative water content in 'Goliath' at low salinity level. Flavonoid content, K, Ca and Mg concentrations were significantly reduced with increasing salinity in all cultivars. The highest Na concentrations were detected in the leaves while the lowest were recorded in the roots of 'Goliath' at high salinity level. The salt sensitivity of 'Goliath' seems to be increased osmotic adjustment through the strongly accumulation of Na in leaves while the salt tolerance of 'Granada' was related to its induce of antioxidative enzyme system more efficiently, resulting in higher osmolytes accumulation under salinity. 'Granada' was more tolerant and stable in physiological and biochemical traits suggesting that it could be grown in salt-affected soils.

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Section: Chlorophyll Concentrationssupporting

confidence: 82%

Effects of Salt Stress on Plant Growth, Nutrient Partitioning, Chlorophyll Content, Leaf Relative Water Content, Accumulation of Osmolytes and Antioxidant Compounds in Pepper (Capsicum annuum L.) Cultivars

Hand

Taffouo

Nouck

et al. 2017

Not Bot Horti Agrobo

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“…The antioxidant response in halophytes, like in glycophytes, varies among species and genera. Most studies reported an induction in the activities of antioxidant enzymes and an accumulation of antioxidant metabolites, in response to salinity (Cherian et al, 1999;Takemura et al, 2000;Parida et al, 2004). Moreover, some halophytes like Thelungiella halophila exhibited high levels of SOD expression even in unstressed conditions (Taji et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Enzyme Activities as a Tool to Discriminate Ecotypes of Crithmum maritimum L. Differing in Their Capacity to Withstand Salinity

Hamed¹,

Magné²,

Abdelly³

2012

Water Stress

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“…Hence whole plant responses to high salt differed from the responses shown by leaves exposed to high salt. This may be because salt exclusion by roots has been reported for Bruguiera species (Takemura et al, 2000), which would alter the actual salt concentration experienced by leaves. The use of leaves from fresh water grown plants, and treatments of very high salt concentrations played an important role in getting some indications of the salt adaptation mechanisms in mangroves since the responses were exaggerated as compared to those in salt-adapted plants.…”

Section: Discussionmentioning

confidence: 99%

“…Bruguiera species are known to accumulate salt to levels higher than that of sea water (Takemura et al, 2000;Kura-Hotta et al, 2001). Salt is thought to act as a cheap and easily available osmoticum, which maintains an inward flow of water into the plant (Shabala, 2000;Pardo and Quintero, 2002).…”

Section: Research Articlementioning

confidence: 99%

“…Increasing salt concentration in the external medium has been reported to bring about an increase in the respiratory oxygen uptake in glycophytes as well as halophytes (Lundegardh, 1955;Rains, 1972;Takemura et al, 2000). However respiration increase is also thought to arise as a pathological response to stress, since the increase is greater in the less salt tolerant species (Burchett, 1989;LopezHoffmann et al, 2006).…”

Section: Research Articlementioning

confidence: 99%

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Salt-induced respiration in Bruguiera cylindrica — role in salt transport and protection against oxidative damage

Atreya

Bhargava

2008

Physiol Mol Biol Plants

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Leaves of Bruguiera cylindrica plants grown in the greenhouse and irrigated with fresh water (FW plants) and those from salt-adapted plants from the seacoast (SW plants) showed about 5-fold and 3-fold increase in respiration, respectively, when immersed in 4M NaCl solution. The increase in respiration was not due to dehydration effect of high salt concentration, since PEG-imposed dehydration stress to the leaves led to an inhibition of respiration rates in both FW and SW plants. The saltinduced increase in respiration rate was specific to monovalent cations, especially Na + and K + , but not divalent or trivalent cations, and to Cl -, but not other anions. Pretreatment of leaves of FW plants with 1mM amiloride, an inhibitor of the Na + / H + antiporter, reduced the NaCl-induced respiration surge. At least some part of the observed respiratory increase could therefore be for providing energy for ion transport, since the Na + / H + antiport activity is driven by activities of the tonoplast and plasma membrane H + -ATPases and H + -PPases. Respiration of the leaves from both FW and SW plants was accounted for by the COX pathway and was inhibited by KCN. But 4M NaCl-induced increase in FW, but not SW plants, was inhibited by the AOX inhibitor, SHAM. Also, generation of ROS was reduced by treatment with KCN, but increased with SHAM. This pointed to a protective role of AOX in reducing ROS generation during salt-induced respiration. Our results indicated that NaCl-induced increase in leaf respiration of B. cylindrica plants irrigated with fresh water was required for (a) salt transport and (b) reducing the harmful effects of ROS that are known to accompany increased respiratory activity.

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Physiological and biochemical responses to salt stress in the mangrove, Bruguiera gymnorrhiza

Cited by 219 publications

References 29 publications

Effects of Salt Stress on Plant Growth, Nutrient Partitioning, Chlorophyll Content, Leaf Relative Water Content, Accumulation of Osmolytes and Antioxidant Compounds in Pepper (Capsicum annuum L.) Cultivars

Effects of Salt Stress on Plant Growth, Nutrient Partitioning, Chlorophyll Content, Leaf Relative Water Content, Accumulation of Osmolytes and Antioxidant Compounds in Pepper (Capsicum annuum L.) Cultivars

Antioxidant Enzyme Activities as a Tool to Discriminate Ecotypes of Crithmum maritimum L. Differing in Their Capacity to Withstand Salinity

Salt-induced respiration in Bruguiera cylindrica — role in salt transport and protection against oxidative damage

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