Biochemical and physiological adaptations of the halophyte<i>Sesuvium portulacastrum</i>(L.) L., (Aizoaceae) to salinity

Lokhande, Vinayak H.; Mulye, Ketki V.; Patkar, Rohini; Nikam, Tukaram D.; Suprasanna, Penna

doi:10.1080/03650340.2012.712207

Cited by 12 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With continuous investigation of S. portulacastrum , more PGPMs could be isolated and their roles in the mediation of plant tolerance to multiple stresses will be revealed. It is believed that PFPMs could be cost-effective and eco-friendly alternatives to improving crop productivity under high-saline conditions ( Lokhande et al., 2013b ; Yang et al., 2023 ).…”

Section: Tolerance To Abiotic and Biotic Stressesmentioning

confidence: 99%

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Zhang,

Wang,

Cao

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

Sesuvium portulacastrum L. is a flowering succulent halophyte in the ice plant family Aizoaceae. There are various ecotypes distributed in sandy coastlines and salty marshlands in tropical and subtropical regions with the common name of sea purslane. These plants are tolerant to salt, drought, and flooding stresses and have been used for the stabilization of sand dunes and the restoration of coastal areas. With the increased salinization of agricultural soils and the widespread pollution of toxic metals in the environment, as well as excessive nutrients in waterbodies, S. portulacastrum has been explored for the desalination of saline soils and the phytoremediation of metals from contaminated soils and nitrogen and phosphorus from eutrophic water. In addition, sea purslane has nutraceutical and pharmaceutical value. Tissue analysis indicates that many ecotypes are rich in carbohydrates, proteins, vitamins, and mineral nutrients. Native Americans in Florida eat it raw, pickled, or cooked. In the Philippines, it is known as atchara after being pickled. S. portulacastrum contains high levels of ecdysteroids, which possess antidiabetic, anticancer, and anti-inflammatory activities in mammals. In this review article, we present the botanical information, the physiological and molecular mechanisms underlying the tolerance of sea purslane to different stresses, its nutritional and pharmaceutical value, and the methods for its propagation and production in saline soils and waterbodies. Its adaptability to a wide range of stressful environments and its role in the production of valuable bioactive compounds suggest that S. portulacastrum can be produced in saline soils as a leafy vegetable and is a valuable genetic resource that can be used for the bioremediation of soil salinity and eutrophic water.

show abstract

Section: Tolerance To Abiotic and Biotic Stressesmentioning

confidence: 99%

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Zhang,

Wang,

Cao

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…At 800 mM NaCl TWC% was significantly reduced in both the green and red morphs. Similarily, two seperate studies on Sesuvium portulacastrum, a facultatic halophyte also in the family Aizoaceae, reported that when subjected to increasing concentrations of NaCl in the soil subtrate S. portulacastrum exhbited depressed TWC% at concentrations >400 mM NaCl (Lokhande et al, 2013;Muchate et al, 2016). Comparatively, the TWC in selected Limonium species watered with 800 mM NaCl was calculated to be ca.…”

Section: Alternative Mechanisms For Salt Tolerancementioning

confidence: 72%

“…Compared to the TWC of ca. 80 % calculated for Limmonium species (Al and 73-83% reported for S. Portulacastrum (Lokhande et al, 2013). This inidicates a strong resistance to leaf dehydration, and subsequently a strong capacity to tolerate high concentrations of NaCl in the substrate compared with other halophyte species.…”

Section: Alternative Mechanisms For Salt Tolerancementioning

confidence: 80%

“…When treated with incresaing concentrations of NaCl (0, 200, 400, 600 800 mM), all clone lines of S. portulacastrum exhbited stimulated growth at 200 mM NaCl as inidicated by shoot length at TWC%. (Lokhande et al, 2013). This implies that the maximum relative growth rate of salt tolerant halophytes at low salinity would be less than that their less tolerant counterparts (Rozema & Schat, 2013).…”

Section: There Is An Apparent Trade-off Between High Salt Tolerance and Growth Rate At Low Salinitiesmentioning

confidence: 99%

See 1 more Smart Citation

Evaluating the functional role of betacyanin in salinity tolerance of Horokaka (Disphyma australe)

Whyte¹

View full text Add to dashboard Cite

<p>Yield loss in agriculture due saline soils is a growing problem in arid and semi-arid regions as traditional crop species are inherently sensitive to salinity in the root zone. In the face of diminishing fresh water resources it is necessary to explore the traits which allow naturally salt tolerant species to exploit high saline environments. In the hope of transferring these traits via genetic modification to traditional crop species, or utilising these species as niche crops in their own right. While a majority of plants appear green, red pigmented plants are commonly associated with marginal environments. In these leaves anthocyanins or less commonly betalains are responsible for leaf reddening. The betalains are small class of tyrosine derived chromo alkaloids found in the core Caryophyllales and in some Basidiomycetes. There are two structural groups: the red/violet betacyanins and the yellow/orange betaxanthins. Due to this distribution pattern, betalain pigments are thought to function in salinity stress tolerance. However, minimal research has been conducted to support this salinity tolerance hypothesis due to a lack of an appropriate model species. Horokaka (Disphyma australe) exhibits colour dimorphism among populations, green and red morphs grow contiguously in coastal environments where the frequency of red morphs positively correlates with increased substrate salinity. Betacyanins have previously been implicated in serving a photo protective for D. australe. In dimorphic populations D. australe along the south Wellington coastline, the red morph has been shown to be more tolerant to the combination of high light and salinity, as measured by higher CO2 assimilation rates, reduced inhibition of PSII and enhanced water use efficiency relative to the green morph. In these studies, betacyanin production in the red morphs was shown to depend on duel exposure to both salinity and high light, however the green morph was unable to produce betacyanin under the same conditions (Jain & Gould, 2015). This easy manipulation of leaf colour by salinity and high light offers a system to study whether betacyanin pigments aid salinity tolerance. I aimed further investigate the photo protective hypothesis of betalain using D. australe, and how this may influence distribution patterns by focusing on three areas: the capacity for new root growth along a salinity gradient, germination capacity under saline conditions, and ion content in the roots at low, moderate and high NaCl concentrations. Shoots with no roots and a minimum of two mature leaf pairs were cut from green and red morphs of D.asutrale growing in the greenhouse facilities at Victoria University of Wellington. The shoots were grown hydroponically in 10% Hoaglands solution supplemented or not with (50, 100, or 150 mM) NaCl. To test the light screening capacity of leaf betacyanin a red filter was secured of half the green shoots, the cuttings were grown for 5 weeks under a controlled 16h light/ 8h dark photoperiod. Final weights of the shoot and roots, along with tissue water content of the shoots and roots were obtained to establish the relative capacity for new root growth when subjected to increasing salinity. Seeds were germinated in vitro in the presence of increasing NaCl concentrations (0, 100, 200, 300, and 400 mM NaCl), and subject to recovery tests after stress. The germination percentages and velocity were determined to establish te relative tolerance and competitiveness of the two D. australe morphs. Salt treatments were also applied to plants with an established root system, by 14-day treatment with increasing NaCl concentrations (0, 200, 400, 800 mM). The tissue water content of the shoots and ion contents (Na+ and K+) in the roots were determined in the control and the stressed plants of the two colour morphs. The different germination behaviour of the two morphs and capacity for root development appears to contribute to their distribution along a salinity gradient. Despite some differences under the control treatment, the concentrations of the two ions (Na+ and K+) were similar in the two morphs, not explaining differences in salinity tolerance, except for the increase of K+ in the roots of the green morph in the absence of NaCl. This specific response may be relevant for distribution patterns in D. australe. The ecological implications of these findings, which can contribute to vegetation distribution of D. australe in coastal environments, and the relevance of betacyanin accumulation in salinity tolerance for halophytes, and potential application for improved crop vigour are discussed.</p>

show abstract

Oxidative Stress and Antioxidant Defence Under Metal Toxicity in Halophytes

Kumari

Goyal

Sheokand

2019

Ecophysiology, Abiotic Stress Responses and Utilization of Halophytes

View full text Add to dashboard Cite

Biochemical and physiological adaptations of the halophyteSesuvium portulacastrum(L.) L., (Aizoaceae) to salinity

Cited by 12 publications

References 50 publications

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Evaluating the functional role of betacyanin in salinity tolerance of Horokaka (Disphyma australe)

Oxidative Stress and Antioxidant Defence Under Metal Toxicity in Halophytes

Contact Info

Product

Resources

About