Salinity tolerance mechanisms in glycophytes: An overview with the central focus on rice plants

Horie, Tomoaki; Karahara, Ichirou; Katsuhara, Maki

doi:10.1186/1939-8433-5-11

Cited by 330 publications

(218 citation statements)

References 171 publications

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“…For glycophytes (like eggplant and huckleberry) to tolerate salinity stress, they need to maintain a high cytosolic K/Na ratio in order to sustain major metabolic processes (Horie et al 2012). The decrease in leaf K is similar to that reported in other plants (Azevedo Neto et al 2004;Tavakkoli et al 2010Tavakkoli et al , 2011Wang et al 2011) as well as in other cultivars of eggplant (Abbas et al 2010;Unlukara et al 2010;Akinci et al 2004;Shaheen et al 2012) under salinity stress.…”

Section: Mineral Accumulationsupporting

confidence: 67%

Comparison of growth and mineral accumulation of two solanaceous species,Solanum scabrumMill. (huckleberry) andS. melongenaL. (eggplant), under salinity stress

Assaha

Ueda

Saneoka

2013

Soil Science and Plant Nutrition

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Solanum scabrum Mill. (huckleberry) is widespread in West, East and Central Africa, where it constitutes one of the most important leafy vegetables. However, the salinity tolerance of this crop has not yet been assessed. The objective of this study was to assess the response of huckleberry to salinity stress in comparison with eggplant (S. melongena L.). Four-week-old seedlings of both species were subjected to two levels of salinity stress, 50 mM and 150 mM sodium chloride (NaCl), for 14 d. Leaf water potential of both species decreased with increasing salinity stress. This decrease was lower in huckleberry than in eggplant. Total dry weight and total leaf area were also decreased by salinity, and the reductions of total dry weight and total leaf area under the 50 mM treatment compared with the control were 25 and 18% in huckleberry, while they were 47 and 55% in eggplant, respectively. The increases in leaf sodium (Na) accumulation in the 50 and 150 mM treatments compared with the control were 65 and 66% for eggplant and 18 and 36% for huckleberry, respectively. Na accumulation in stem and root in huckleberry was higher than that of leaf, whereas it was the reverse in eggplant under both salinity treatments. Huckleberry accumulated less Na in the leaves than eggplant, suggesting that huckleberry might reduce the transport of Na to its leaves more effectively than eggplant. The decrease of potassium (K) accumulation and the increase of Na in leaves by salinity resulted in a higher Na/K ratio in leaves, but this trend was greater in eggplant than in huckleberry. The calcium (Ca) concentration in leaves of huckleberry was also increased by salinity, whereas that of eggplant was decreased. These results indicate that huckleberry is more tolerant to salinity than eggplant, and less decrease in leaf area associated with lower leaf Na and increased Ca concentrations may be important in enhancing quality and sustaining productivity of the crop under this stress.

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Section: Mineral Accumulationsupporting

confidence: 67%

Comparison of growth and mineral accumulation of two solanaceous species,Solanum scabrumMill. (huckleberry) andS. melongenaL. (eggplant), under salinity stress

Assaha

Ueda

Saneoka

2013

Soil Science and Plant Nutrition

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“…However, the maintenance of leaf turgor is a controversial issue. Horie et al [173] considered that salt accumulation in the leaf apoplast could be responsible for the death of leaves in plants exposed to salinity.…”

Section: Plant Osmotic Regulationmentioning

confidence: 99%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos¹,

Ortuño²,

Bernal‐Vicente³

et al. 2017

Preprint

362

200

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This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

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“…Cultivation of crop plants in soils with high salinity level can be affected also by drought stress, ion toxicity and mineral deficiency with next steps to decrease growth and productivity. The rice (glycophyte) is also known as desired model plant for salinity stress investigations (Horie et al, 2012). Up to now, mostly visible RGB imaging of rice plant shoots was used for stress detection and with some early results from hyperspectral application aimed at salinity interaction in this strategic crop (Humplík et al, 2015).…”

Section: Other Applications Of Hyperspectral Image Analysis To Identimentioning

confidence: 99%

Applying hyperspectral imaging to explore natural plant diversity towards improving salt stress tolerance

Sytar

Brestič

Živčák

et al. 2017

Science of The Total Environment

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• Salinity represents an abiotic stress constraint affecting growth and productivity of plants • Better solutions is to improve the level of salt resistance using natural genetic variability within crop species • Phenomic methodology employing different non-invasive imaging systems for detecting quantitative and qualitative changes caused by salt stress at the whole plant and canopy level. Hyperspectral imaging techniques provide unique opportunities for fast and reliable evaluation of numerous characteristics associated both with various structural, biochemical and physiological traits • Salt-soil-plant interaction and sustainable coastal agriculture need powerful phenotyping tools Salinity represents an abiotic stress constraint affecting growth and productivity of plants in many regions of the world. One of the possible solutions is to improve the level of salt resistance using natural genetic variability within crop species. In the context of recent knowledge on salt stress effects and mechanisms of salt tolerance, this review present useful phenomic approach employing different non-invasive imaging systems for detection of quantitative and qualitative changes caused by salt stress at the plant and canopy level. The focus is put on hyperspectral imaging technique, which provides unique opportunities for fast and reliable estimate of numerous characteristics associated both with various structural, biochemical Science of the Total Environment 578 (2017) 90-99 ⁎ Corresponding authors at:

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Salinity tolerance mechanisms in glycophytes: An overview with the central focus on rice plants

Cited by 330 publications

References 171 publications

Comparison of growth and mineral accumulation of two solanaceous species,Solanum scabrumMill. (huckleberry) andS. melongenaL. (eggplant), under salinity stress

Comparison of growth and mineral accumulation of two solanaceous species,Solanum scabrumMill. (huckleberry) andS. melongenaL. (eggplant), under salinity stress

Plant Responses to Salt Stress: Adaptive Mechanisms

Applying hyperspectral imaging to explore natural plant diversity towards improving salt stress tolerance

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