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Khan, M. Ajmal; Aziz, Irfan

doi:10.1023/a:1011112908069

Cited by 35 publications

(19 citation statements)

References 22 publications

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“…The density of seedlings, saplings, and trees was not significantly different along the tidal gradient, and A. marina could survive even in the hypersaline soil (45.6 ppt) in this study site. This might be related to the fact that A. marina could adapt to high salinity and dry conditions when it grows in arid regions (Khan and Aziz, 2001). In particular, it has a greater capacity for osmotic adjustment to salt accumulation (Khan and Aziz, 2001).…”

Section: Discussionmentioning

confidence: 99%

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Chang¹,

Han²,

Kim³

et al. 2020

Turk J Agric For

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This study investigated the interactions between topsoil properties and ecophysiological responses of Avicennia marina along the tidal gradient in an arid region in Qatar. In February 2017, three plots were established, each at a distance of 0 m (D0), 50 m (D50), and 100 m (D100) from the inland boundary of a mangrove forest. Soil samples were collected at 0-10-cm depth in each plot to determine the chemical properties, and the density of seedlings, saplings, and trees was measured. Moreover, above-(AGB) and below-ground biomass (BGB) were calculated using an allometric equation for A. marina with the measured diameter at breast height in February 2017. As an indicator of salt stress, chlorophyll fluorescence parameters were measured in October 2017. Salinity (45.60 ppt) and exchangeable sodium percentage (ESP; 29.02%) at D100 were significantly highest. AGB was higher at D100 (41.44 Mg ha-1) than at D0 (0 Mg ha-1) and D50 (7.33 Mg ha-1), and BGB was higher at D100 (44.91 Mg ha-1) than only at D0 (0 Mg ha-1). There was no significant difference in the density of seedlings, saplings, or trees or the chlorophyll fluorescence parameters among the plots. Salt stress was not induced despite the hypersalinity at this site, since A. marina growing in an arid climate can endure strong salinity. Soil pH was highest at D0, followed by at D50 and D100. Organic matter, total nitrogen, available phosphorus, and cation exchange capacity were significantly higher at D100 than at D0 and D50. Higher concentrations of nutrients on the seaward side might result from the tidal gradient and a large input of organic matter and low soil alkalinity.

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Section: Discussionmentioning

confidence: 99%

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Chang¹,

Han²,

Kim³

et al. 2020

Turk J Agric For

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“…A halophyte P. turgidum tested for its application as forage/fodder was found to be equally effective as conventionally used forage crop maize. Panicum being a non-accumulator of salt can completely replace the maize for forage/fodder use (Khan & Aziz, 2001).…”

Section: Forages and Foddermentioning

confidence: 99%

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Srivastava²,

et al. 2017

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Land is considered as the life‐sustaining platform for food and water. However, there are contaminants such as salt, heavy metal, and industrial waste that decrease land fertility, posing serious threat to sustainable agriculture. In recent years, novel crop varieties with improved tolerance against environmental contaminants have been developed, but most of them face severe yield penalty. Alternatively, naturally tolerant plants such as extremophiles can be screened for their potential as crops. These crops should be tolerant to various abiotic stresses, perform better under extreme conditions and produce higher biomass and yield. In view of this, the present review focuses on the effects of saline soil on plants and how a class of plants termed as “halophytes” can tolerate high levels of salt. The potential applications of halophytes in phytoremediation, desalination, secondary metabolite production, medicine, food, and saline agriculture have been discussed. A concept of saline agriculture has been proposed for rehabilitation of saline and degraded lands. In this context, a potential halophyte is cultivated in salt‐contaminated soil for desalination. The harvested halophyte can have industrial value, and later on, rehabilitated soil can be utilized for agriculture purpose. Some success with halophyte cultivation has been demonstrated in environmentally degraded soils, and it is imperative that large‐scale adoption of halophytes, as potential candidates, can be accorded top priority for rehabilitating contaminated soils, which can pave way for sustainable agriculture.

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“…It can be used for soil reclamation to reduce salinity and contamination of heavy metals. Halophytes have a number of adaptations to mitigate salinity stress, including salt discharge from roots, accumulation of organic acids, reduced stomatal conductance, lower water potential, and uptake of inorganic ions [3]. Moreover, specific types of amino acids, carbohydrates, and glycine betaine are accumulated as compatible solutes under abiotic stress [4].…”

Section: Introductionmentioning

confidence: 99%

Halotolerant Bacterial Diversity Associated with Suaeda fruticosa (L.) Forssk. Improved Growth of Maize under Salinity Stress

Aslam

Ali

2018

Agronomy

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Abstract:Halotolerant bacterial strains associated with the rhizosphere and phytoplane of Suaeda fruticosa (L.) Forssk. growing in saline habitats were isolated to mitigate the salinity stress of Zea mays L. 16S rRNA gene sequencing confirmed the presence of strains that belong to Gracilibacillus, Staphylococcus, Virgibacillus, Salinicoccus, Bacillus, Zhihengliuella, Brevibacterium, Oceanobacillus, Exiguobacterium, Pseudomonas, Arthrobacter, and Halomonas genera. Strains were screened for auxin production, 1-aminocyclopropane-1-carboxylate (ACC)-deaminase, and biofilm formation. Bacterial auxin production ranged from 14 to 215 µg mL −1 . Moreover, several bacterial isolates were also recorded as positive for ACC-deaminase activity, phosphate solubilization, and biofilm formation. In pot trials, bacterial strains significantly mitigated the salinity stress of Z. mays seedlings. For instance, at 200 and 400 mM NaCl, a significant increase of shoot and root length (up to onefold) was recorded for Staphylococcus jettensis F-11. At 200 mM, Zhihengliuella flava F-9 (45%) and Bacillus megaterium F-58 (42%) exhibited significant improvements for fresh weight. For dry weight, S. jettensis F-11 and S. arlettae F-71 recorded up to a threefold increase at 200 mM over the respective control. The results of this study suggest that natural plant settings of saline habitats are a good source for the isolation of beneficial salt-tolerant bacteria to grow crops under saline conditions.

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Untitled

Cited by 35 publications

References 22 publications

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Halotolerant Bacterial Diversity Associated with Suaeda fruticosa (L.) Forssk. Improved Growth of Maize under Salinity Stress

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