Morpho-anatomical, physiological and biochemical adaptive responses to saline water of Bougainvillea spectabilis Willd. trained to different canopy shapes

Carillo, Petronia; Cirillo, Chiara; Micco, Veronica De; Arena, Carmen; Pascale, Stefania De; Rouphael, Youssef

doi:10.1016/j.agwat.2018.08.037

Cited by 71 publications

(69 citation statements)

References 58 publications

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“…Root growth rate may be severely affected by saline soils and reduction may even be recorded in salt-tolerant plants. In agreement with previously published studies on the effects of salinity on root elongation (Cirillo et al, 2019; Dugasa et al, 2019), salinity treatments were found to cause stunted root growth. The growth-promoting effect under salinity stress could be due to an increase in the osmotic potential of the cells in the elongation zone coupled with enhanced cell division.…”

Section: Discussionsupporting

confidence: 92%

“…The observed reduction of leaf area under salinity treatments compared to control plants also suggests that salinity stress may affect plant growth through reduction in leaf area. Previous works have disclosed that salt tolerant plants displays less growth retardation and have relatively higher growth rate compared to sensitive ones under salinity stress (Carillo et al, 2019; Hussain et al, 2018; Sarabi et al, 2017;). Consequently, our findings suggest that GBK043128 and GBK043137 have a better capacity to sustain growth and development under salt treatments compared to other finger millet varieties studied, to sustain growth and production under salinity conditions (Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…It has been established that Na + and K + have similar cellular effects despite the fact Na + inhibits K + absorption through binding and obstructing to its transport system (Flowers and Yeo (1986). Many studies have reported that plants growing under high NaCl concentrations have low ratios of K + /Na + ratio caused by deficiency of intracellular K + (Dugasa et al, 2018; Cirillo et al, 2018; Sandhu et al, 2017; Sarabi et al, 2017). The same phenomenon was also observed in this study, where increment of NaCl concentration decreased the leaf K + /Na + ratios.…”

Section: Discussionmentioning

confidence: 99%

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Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants

Mukami

Ngetich

Syombua

et al. 2019

Preprint

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Finger millet is one of the most important cereals that are often grown in semiarid and arid regions of East-Africa. Salinity is known to be a major impediment for the crop growth and production. This study was aimed to understand the mechanisms of physiological and biochemical responses to salinity stress of Kenyan finger millet varieties (GBK043137, GBK043128, GBK043124, GBK043122, GBK043094, GBK043050) grown across different agroecological zones under NaCl-induced salinity stress. Seeds were germinated on the sterile soil and treated using various concentrations of NaCl (100, 200 and 300 mM) for two weeks. Again, the early-seedling stage of germinated plants was irrigated with the same salt concentrations for 60 days. Results indicated depression in germination percentage, shoot and root growth rate, leaf relative water content, chlorophyll content contents, leaf K+ concentration, and leaf K+/Na+ ratios increased salt levels. Contrary, proline and malonaldehyde (MDA) contents reduced sugar content and leaf total proteins. At the same time, the leaf Na+ and Cl− amounts of all plants increased substantially with rising stress levels. Clustering analysis revealed that GBK043094 and GBK043137 were placed together and identified as salt-tolerant varieties based on their performance under salt stress. Overall, our findings indicated a significant varietal variability for most of the parameters analysed. These superior varieties identified could be potentially used as promising genetic resources in future breeding programmes development directed towards salt-tolerant finger millet hybrids. Further analysis at genomic level need to be undertaken to better understand the genetic factors that promote salinity tolerance in finger millet.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants

Mukami

Ngetich

Syombua

et al. 2019

Preprint

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“…Increased concentrations of sodium and chloride ions in the cytoplasm can disrupt cellular processes, causing damage to photosynthetic apparatus as well as the dehydration of cells [25,29]. Therefore, limiting excess amounts of sodium in cytosol and increasing the cellular potassium to sodium ratio are crucial for salt tolerance [30,31]. This means the maintenance of a regular photosynthetic rate and stable K+/Na+ ratio are important traits for salt-tolerant alfalfa cultivars.…”

Section: Effect Of Salt Stress On Morphology Growth Forage Yield Anmentioning

confidence: 99%

Morphological, Physiological, and Genetic Responses to Salt Stress in Alfalfa: A Review

Bhattarai

Biswas

et al. 2020

Agronomy

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Alfalfa (Medicago sativa L.) is an important legume forage crop. However, its genetic improvement for salt tolerance is challenging, as alfalfa’s response to salt stress is genetically and physiologically complex. A review was made to update the knowledge of morphological, physiological, biochemical, and genetic responses of alfalfa plants to salt stress, and to discuss the potential of applying modern plant technologies to enhance alfalfa salt-resistant breeding, including genomic selection, RNA-Seq analysis, and cutting-edge Synchrotron beamlines. It is clear that alfalfa salt tolerance can be better characterized, genes conditioning salt tolerance be identified, and new marker-based tools be developed to accelerate alfalfa breeding for salt tolerance.

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“…Soluble carbohydrates (µmol g −1 dw) were quantified in ethanolic extracts of lyophilized spinach leaf tissues. Starch as well was quantified in the pellet of the same ethanolic extract after hydrolysis to glucose, by an enzymatic assay coupled with reduction of pyridine nucleotides as described in Carillo et al [48]. The increase in absorbance at 340 nm was recorded by a Synergy HT spectrophotometer (BioTEK Instruments, Bad Friedrichshall, Germany).…”

Section: Starch and Soluble Carbohydrates Analysismentioning

confidence: 99%

Morphological and Physiological Responses Induced by Protein Hydrolysate-Based Biostimulant and Nitrogen Rates in Greenhouse Spinach

et al. 2019

Self Cite

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Plant-derived protein hydrolysates (PHs) are gaining prominence as biostimulants due to their potential to improve yield and nutritional quality even under suboptimal nutrient regimens. In this study, we investigated the effects of foliar application of a legume-derived PH (0 or 4 mL L−1) on greenhouse baby spinach (Spinacia oleracea L.) under four nitrogen (N) fertilization levels (0, 15, 30, or 45 kg ha−1) by evaluating morphological and colorimetric parameters, mineral composition, carbohydrates, proteins, and amino acids. The fresh yield in untreated and biostimulant-treated spinach plants increased in response to an increase in N fertilization from 1 up to 30 kg ha−1, reaching a plateau thereafter indicating the luxury consumption of N at 45 kg ha−1. Increasing N fertilization rate, independently of PH, lead to a significant increase of all amino acids with the exception of alanine, GABA, leucine, lysine, methionine, and ornithine but decreased the polyphenols content. Interestingly, the fresh yield at 0 and 15 kg ha−1 was clearly greater in PH-treated plants compared to untreated plants by 33.3% and 24.9%, respectively. This was associated with the presence in of amino acids and small peptides PH ‘Trainer®’, which act as signaling molecules eliciting auxin- and/or gibberellin-like activities on both leaves and roots and thus inducing a “nutrient acquisition response” that enhances nutrients acquisition and assimilation (high P, Ca, and Mg accumulation) as well as an increase in the photochemical efficiency and activity of photosystem II (higher SPAD index). Foliar applications of the commercial PH decreased the polyphenols content, but on the other hand strongly increased total amino acid content (+45%, +82%, and +59% at 0, 15, and 30 kg ha−1, respectively) but not at a 45-kg ha−1-rate. Overall, the use of PH could represent a sustainable tool for boosting yield and nitrogen use efficiency and coping with soil fertility problems under low input regimens.

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Morpho-anatomical, physiological and biochemical adaptive responses to saline water of Bougainvillea spectabilis Willd. trained to different canopy shapes

Cited by 71 publications

References 58 publications

Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants

Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants

Morphological, Physiological, and Genetic Responses to Salt Stress in Alfalfa: A Review

Morphological and Physiological Responses Induced by Protein Hydrolysate-Based Biostimulant and Nitrogen Rates in Greenhouse Spinach

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