Salinity-Induced Genes and Molecular Basis of Salt-Tolerant Strategies in Mangroves

Das, Anath Bandhu; Strasser, Reto J.

doi:10.1007/978-81-322-0807-5_3

Cited by 15 publications

(9 citation statements)

References 171 publications

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“…Salinity greatly affects the growth of plants. Various studies have been conducted to examine the survival of mangroves in different salinity ranges [ 56 – 59 ]. Avicennia marina is always recognized as the one of the most salt-tolerant mangrove species because it naturally grows on the waterfront [ 56 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

“…Avicennia marina is always recognized as the one of the most salt-tolerant mangrove species because it naturally grows on the waterfront [ 56 , 58 ]. Conversely, many other mangrove species cannot survive on the seafront because they cannot tolerate higher water salinity [ 52 , 59 ]. Clearly, selecting the proper mangrove species for the local conditions is crucial for successful restoration projects.…”

Section: Resultsmentioning

confidence: 99%

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Long-Term Assessment of an Innovative Mangrove Rehabilitation Project: Case Study on Carey Island, Malaysia

Motamedi

Hashim

Zakaria

et al. 2014

The Scientific World Journal

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Wave energy and storm surges threaten coastal ecology and nearshore infrastructures. Although coastal structures are conventionally constructed to dampen the wave energy, they introduce tremendous damage to the ecology of the coast. To minimize environmental impact, ecofriendly coastal protection schemes should be introduced. In this paper, we discuss an example of an innovative mangrove rehabilitation attempt to restore the endangered mangroves on Carey Island, Malaysia. A submerged detached breakwater system was constructed to dampen the energy of wave and trap the sediments behind the structure. Further, a large number of mangrove seedlings were planted using different techniques. Further, we assess the possibility of success for a future mangrove rehabilitation project at the site in the context of sedimentology, bathymetry, and hydrogeochemistry. The assessment showed an increase in the amount of silt and clay, and the seabed was noticeably elevated. The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings. As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Long-Term Assessment of an Innovative Mangrove Rehabilitation Project: Case Study on Carey Island, Malaysia

Motamedi

Hashim

Zakaria

et al. 2014

The Scientific World Journal

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“…ROS detoxification pathways include antioxidative enzymes which play a protective role in scavenging toxic radicals (Das and Strasser, 2013). Salt sequestration into cell vacuoles through transporters is another key mechanism employed by halophytes to maintain a high cytosolic K + /Na + ratio and thus control the salt concentrations in the cytosol (Kronzucker and Britto, 2011; Sreeshan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The salt tolerance mechanism is coordinately linked (Figure 1 ) with signal transduction, ROS generation and detoxification pathways, osmoregulation or ion homeostasis through osmoprotectants, and differential expression of salt responsive genes and transcription factors (Flowers and Colmer, 2008 ; Rajalakshmi and Parida, 2012 ; Himabindu et al, 2016 ; Khan et al, 2016 ; Muchate et al, 2016 ). ROS detoxification pathways include antioxidative enzymes which play a protective role in scavenging toxic radicals (Das and Strasser, 2013 ). Salt sequestration into cell vacuoles through transporters is another key mechanism employed by halophytes to maintain a high cytosolic K + /Na + ratio and thus control the salt concentrations in the cytosol (Kronzucker and Britto, 2011 ; Sreeshan et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

“…A number of evidences suggest that all plants have almost similar salt tolerance regulatory mechanisms and there are quantitative differences rather than qualitative between halophyte and glycophyte (Anjum et al, 2012 ; Rai et al, 2012 ; Bartels and Dinakar, 2013 ; Sreeshan et al, 2014 ; Joshi et al, 2015 ; Volkov, 2015 ; Muchate et al, 2016 ). It may be because of higher expression of key genes involved in the salt stress tolerance mechanism, or halophytic proteins are intrinsically more active than the corresponding glycophytic proteins (Anjum et al, 2012 ; Das and Strasser, 2013 ; Himabindu et al, 2016 ; Muchate et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Halophytes: Potential Resources for Salt Stress Tolerance Genes and Promoters

2017

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Halophytes have demonstrated their capability to thrive under extremely saline conditions and thus considered as one of the best germplasm for saline agriculture. Salinity is a worldwide problem, and the salt-affected areas are increasing day-by-day because of scanty rainfall, poor irrigation system, salt ingression, water contamination, and other environmental factors. The salinity stress tolerance mechanism is a very complex phenomenon, and some pathways are coordinately linked for imparting salinity tolerance. Though a number of salt responsive genes have been reported from the halophytes, there is always a quest for promising stress-responsive genes that can modulate plant physiology according to the salt stress. Halophytes such as Aeluropus, Mesembryanthemum, Suaeda, Atriplex, Thellungiella, Cakile, and Salicornia serve as a potential candidate for the salt-responsive genes and promoters. Several known genes like antiporters (NHX, SOS, HKT, VTPase), ion channels (Cl−, Ca2+, aquaporins), antioxidant encoding genes (APX, CAT, GST, BADH, SOD) and some novel genes such as USP, SDR1, SRP etc. were isolated from halophytes and explored for developing stress tolerance in the crop plants (glycophytes). It is evidenced that stress triggers salt sensors that lead to the activation of stress tolerance mechanisms which involve multiple signaling proteins, up- or down-regulation of several genes, and finally the distinctive or collective effects of stress-responsive genes. In this review, halophytes are discussed as an excellent platform for salt responsive genes which can be utilized for developing salinity tolerance in crop plants through genetic engineering.

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