Structural and Functional Adaptations in Plants for Salinity Tolerance

Hameed, Mansoor; Ashraf, Muhammad; Ahmad, Muhammad Sajid Aqeel; Naz, Nargis

doi:10.1007/978-90-481-9370-7_8

Cited by 45 publications

(29 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increased sclerification has also been reported by several researchers in many salt tolerant/ halophytic plant species (e.g., Nawaz et al 2013, Hameed et al 2010). Sclerification responded differently in different ecotypes as the stress level of the growth medium increased.…”

Section: Discussionmentioning

confidence: 85%

“…The major function of sclerification is to decrease water loss by evapo-transpiration from the plant body and reduce tissue collapse . Increased sclerefication has also been reported by several researchers in many salt tolerant/ halophytic plant species (e.g Nawaz et al 2013, Hameed et al 2010.…”

Section: Discussionmentioning

confidence: 90%

“…All ecotypes showed consistent increase in aerenchyma formation with increase in salt stress level. The maximum increase was observed in Gatwala ecotype that could be an important feature of this ecotype to survive and excrete toxic ions and overcome gaseous exchange problems during physiological drought (Hameed et al 2010). Aerenchyma is responsible for gaseous exchange under anaerobic conditions for normal metabolic processes in plants inhabiting water logged areas (Nawaz et al 2013, Al-Maskri et al 2014, Di Bella et al 2014.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Leaf anatomical and biochemical adaptations in Typha domingensis Pers. ecotypes for salinity tolerance

et al. 2017

Self Cite

View full text Add to dashboard Cite

Background: Soil salinity is a major menace to plants. Salt tolerant plants have developed different morphological, structural and physiological characteristics, which enable them to survive and reproduce under high salt concentrations. Hypothesis: It was hypothesized that differently adapted ecotypes of T. domingensis may have different structural and biochemical response to various levels of salt stress. Studied species/Data description: Six ecotypes of Typha domingensis Pers. were evaluated for anatomical and biochemical response and to find out the mechanism of adaptation under salt stress. Methods: All the ecotypes of Typha domingensis were acclimatized for a period of six months. Four levels of salinity viz. 0, 100, 200 and 300 mM NaCl were maintained. The plants were carefully collected from the medium to study various anatomical and biochemical characteristics. Results:The most promising anatomical modifications were; reduced leaf thickness in Sheikhupura, Gatwala and Treemu ecotype, increased cell vacuolar volume in Sahianwala and Knotti ecotype, larger metaxylem vessel in Sheikhupura and Gatwala ecotype, aerenchyma formation in all ecotypes and high sclerification in Sahianwala and Knotti ecotype. Accumulation of osmolytes mainly proline and glycinebetaine in Treemu, Sahianwala, Jahlar and Knotti ecotype under different levels of salt stress may be defense mechanism of T. domingensis to prevent severe loss in turgor. Conclusions:The results demonstrate that genetic potential of T. domingensis to grow under salt stress could be used for the purpose of phytoremediation and reclamation of soil salinity. Keywords: Phytoremediation; Foliar response; Organic osmolytes; Sclerification; Wetlands. ResumenAntecedentes: La salinidad del suelo puede llegar a ser una amenaza para las plantas. Sin embargo, las plantas tolerantes a la salinidad han desarrollado diferentes características morfológicas, estructurales y fisiológicas, las cuales les permiten sobrevivir y reproducirse en altas concentraciones de sal. Hipótesis: Los ecotipos adaptados de Typha dominguensis pueden tener diferentes respuestas tanto estructurales como bioquímicas a varias concentraciones de estrés salino. Especies estudiadas/Descripción de los datos: Seis ecotipos of Typha dominguensis Pers fueron evaluados en base a sus respuestas anatómicas y bioquímicas para determinar el mecanismo de adaptación bajo la influencia de estrés salino. Métodos: Todos los ecotipos de T. dominguensis fueron aclimatados por un período de seis meses. Y fueron mantenidos en cuatro niveles de salinidad: 0, 100, 200, 300 mM NaCl. Posteriormente, las plantas fueron colectadas cuidadosamente del medio para el análisis de las características bioquímicas y anatómicas. Resultados: Las más interesantes modificaciones anatómicas encontradas fueron: reducción del grosor de las hojas en los ecotipos pertenecientes a Sheikhupura, Gatwala and Treemu; incremento en el volumen de las vacuolas en la célula en los ecotipos correspondientes a Sahianwala and Knotti; increment...

show abstract

Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Leaf anatomical and biochemical adaptations in Typha domingensis Pers. ecotypes for salinity tolerance

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Leaf succulence is a general anatomical feature of most halophytic plants (Hameed et al , 2010). For these halophytes, succulent leaves and stems exhibit an ability to store water under saline conditions (Short and Colmer, 1999; Song et al , 2006).…”

Section: Introductionmentioning

confidence: 99%

Populus euphratica XTH overexpression enhances salinity tolerance by the development of leaf succulence in transgenic tobacco plants

Han

Wang

Sun

et al. 2013

Journal of Experimental Botany

View full text Add to dashboard Cite

Populus euphratica is a salt-tolerant tree species that develops leaf succulence after a prolonged period of salinity stress. In the present study, a putative xyloglucan endotransglucosylase/hydrolase gene (PeXTH) from P. euphratica was isolated and transferred to tobacco plants. PeXTH localized exclusively to the endoplasmic reticulum and cell wall. Plants overexpressing PeXTH were more salt tolerant than wild-type tobacco with respect to root and leaf growth, and survival. The increased capacity for salt tolerance was due mainly to the anatomical and physiological alterations caused by PeXTH overexpression. Compared with the wild type, PeXTH-transgenic plants contained 36% higher water content per unit area and 39% higher ratio of fresh weight to dry weight, a hallmark of leaf succulence. However, the increased water storage in the leaves in PeXTH-transgenic plants was not accompanied by greater leaf thickness but was due to highly packed palisade parenchyma cells and fewer intercellular air spaces between mesophyll cells. In addition to the salt dilution effect in response to NaCl, these anatomical changes increased leaf water-retaining capacity, which lowered the increase of salt concentration in the succulent tissues and mesophyll cells. Moreover, the increased number of mesophyll cells reduced the intercellular air space, which improved carbon economy and resulted in a 47–78% greater net photosynthesis under control and salt treatments (100–150mM NaCl). Taken together, the results indicate that PeXTH overexpression enhanced salt tolerance by the development of succulent leaves in tobacco plants without swelling.

show abstract

“…Muhammad et al (2014) reported that the water salinity irrigation decreased plant height due to the closure of stomata and inactivation of enzymatic system occurred owing to the decrease in internal and external osmotic potential. The metabolic pathway is changed by accumulation of salts in cell wall; elasticity of cell well decreased and ultimately reduced the plant height (Hameed et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Effect of Irrigation Water Salinity Levels and Different Organic Manures Combined With Bio-Fertilizers on Growth of Conocarpus Erectus L. Transplants

Ibrahem

2016

Scient. J. of Flowers and Ornament. Plants

View full text Add to dashboard Cite

A pot experiment was conducted in the Orman Botanical Garden, Giza, Egypt, during two successive seasons of 2014 and 2015 to study the effect of different saline water levels (970, 5000, 8000 and 12000 ppm) and organic manure (cattle manure and chicken manure) combined with bio-fertilizers on Conocarpus erectus L. transplants productivity. The results indicated that there were decreases due to the effect of irrigation water levels salinity and organic manures in plant height (cm), root length (cm), stem diameter (cm), No. of leaves, fresh and dry weight of roots (g)/plant, fresh and dry weights of vegetative parts of Conocarpus erectus transplants with increasing water salinity. On the other hand, chlorophyll a, b and carotenoids content in the leaves decreased with increasing irrigation water levels with or without organic manures. The N, P and K percentages in the leaves were increased with decreasing irrigation water salinity and organic manures, while the Na + , Cl -and proline concentration in the leaves increased with increasing irrigation water salinity and organic manures. It can be concluded that Conocarpus erectus L. transplant can tolerate salinity up to 8000 ppm in irrigation water and organic manures combined with bio-fertilizers.

show abstract

Structural and Functional Adaptations in Plants for Salinity Tolerance

Cited by 45 publications

References 74 publications

Leaf anatomical and biochemical adaptations in Typha domingensis Pers. ecotypes for salinity tolerance

Leaf anatomical and biochemical adaptations in Typha domingensis Pers. ecotypes for salinity tolerance

Populus euphratica XTH overexpression enhances salinity tolerance by the development of leaf succulence in transgenic tobacco plants

Effect of Irrigation Water Salinity Levels and Different Organic Manures Combined With Bio-Fertilizers on Growth of Conocarpus Erectus L. Transplants

Contact Info

Product

Resources

About