Restoration of saline land by halophytes for Indian soils

Ravindran, K.C.; Venkatesan, K.; Balakrishnan, V.; Chellappan, K. P.; Balasubramanian, T.

doi:10.1016/j.soilbio.2007.02.005

Cited by 273 publications

(120 citation statements)

References 9 publications

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“…B. indica was not chosen for this study as the best salt-accumulating halophyte, it was chosen due to our interest in its unique adaptations to salt stress [78], suggesting that other halophytes may also be used for salt phytoremediation and could potentially provide even better results. Studies have demonstrated that halophytes can survive in extreme salinities and mitigate soil salinity [79][80][81][82][83][84][85][86], but studies on salt phytoremediation in water are still scarce. Overall, we concluded that salt phytoremediation is a plausible strategy in CWs.…”

Section: Discussionmentioning

confidence: 99%

Role of Plants in a Constructed Wetland: Current and New Perspectives

Shelef

Gross

Rachmilevitch

2013

Water

167

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Abstract:The role of plants in the treatment of effluents by constructed wetland (CW) systems is under debate. Here, we review ways in which plants can affect CW processes and suggest two novel functions for plants in CWs. The first is salt phytoremediation by halophytes. We have strong evidence that halophytic plants can reduce wastewater salinity by accumulating salts in their tissues. Our studies have shown that Bassia indica, a halophytic annual, is capable of salt phytoremediation, accumulating sodium to up to 10% of its dry weight. The second novel use of plants in CWs is as phytoindicators of water quality. We demonstrate that accumulation of H 2 O 2 , a marker for plant stress, is reduced in the in successive treatment stages, where water quality is improved. It is recommended that monitoring and management of CWs consider the potential of plants as phytoremediators and phytoindicators.

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Section: Discussionmentioning

confidence: 99%

Role of Plants in a Constructed Wetland: Current and New Perspectives

Shelef

Gross

Rachmilevitch

2013

Water

167

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“…Salinity is amongst the most significant environmental factors responsible for substantial losses in agricultural production worldwide and it is one of the serious problems confronting sustainable agriculture in irrigated production systems in arid and semiarid regions 4 (Marschner 1995;Ravindran et al, 2007). Nearly 20% of the world's cultivated area and about half of the world's irrigated lands are affected by this stress (Munns and Tester, 2008).…”

Section: Introductionmentioning

confidence: 99%

Ammonium enhances resistance to salinity stress in citrus plants

Fernández-Crespo

Camañes

García‐Agustín

2012

Journal of Plant Physiology

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In this work, we demonstrate that NH 4 + nutrition in citrange Carrizo plants acts as an inducer of resistance against salinity conditions. We investigated its mode of action and provide evidence that NH 4 + confers resistance by priming abscisic acid and polyamines, just as enhancing H 2 O 2 and proline basal content. Moreover it observed a diminished Cl -uptake as well as an enhanced PHGPx expression after salt stress. Control and N-NH 4 + plants have shown optimal growth, however it was observed that N-NH 4 + plants have displayed greater dry weight and total lateral roots than control plants, but that differences are not seen for primary roots length. Our results reveal that N-NH 4 + treatment induces a similar phenotypical response to the recent stress-induced morphogenetic response (SIMRs). The hypothesis is that N-NH 4 + treatment triggers mild chronic stress in citrange Carrizo plants, which might explain the SIMR observed. Moreover, we observed modulators of stress signaling, such as H 2 O 2 in N-NH 4 + plants, which could acts as an intermediary between stress and the development of the SIMR phenotype. This observation suggests that NH 4 + treatments induce a mild stress condition that primes the citrange Carrizo defense response by stress imprinting and confers protection against a subsequent salt stress.

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“…Halophytes have been utilized as a vegetable, forage and oilseed crop (Glenn et al, 1999) and as a cleaning crop (Ravindran et al, 2007), and have been evaluated as a potentially useful crop resource on saline soils. There are many halophytes inhabiting the Ariake Sea in Japan, but their characteristics and utilization have not been elucidated well.…”

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confidence: 99%