Intrinsic water use efficiency controls the adaptation to high salinity in a semi-arid adapted plant, henna (Lawsonia inermis L.)

Fernández‐García, Nieves; Olmos, Enrique; Bardisi, Enas A.; Garma, Jesús García-de la; López-Berenguer, Carmen; Rubio-Asensio, J.S.

doi:10.1016/j.jplph.2013.11.004

Cited by 62 publications

(46 citation statements)

References 36 publications

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“…At 5‰ salinity level, the root/shoot ratio of R. pseudoacacia decreased significantly, which was related to the severe reduction of root biomass. The similar result was also found by Fernández-García et al (2014) and Glaeser et al (2016). However, Li et al (2016) didn't find the significant change in root/shoot ration for R. chinensis, which may be controlled by the genes in plants (Coyle and Coleman, 2005).…”

Section: Discussionsupporting

confidence: 77%

“…However, root biomass would not reduce always. The root biomass of Lawsonia inermis was not affected by salinity at 75 mM NaCl (Fernández-García et al, 2014). R. pseudoacacia seedlings also didn't show significant decrease at 1‰ salinity level and root/shoot ratio increased significantly.…”

Section: Discussionmentioning

confidence: 87%

“…Plant species could adapt the appropriate salinity range because they could use some salt ions as osmotic adjustment substance (Koyro, 2006). The increase of root/shoot ratio is a common response under salt stress (Fernández-García et al, 2014;González et al, 2012;Álvarez and Sánchez-Blanco, 2014). This trait may favor to limit the accumulation of toxic ions in the aerial parts (Munns and Tester, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…A reduction in stomata conductance was also one of the main causes of photosynthesis decline, which could favor to conserve water status and prevent absorbing salt ion under salt stress (Fernández-García et al, 2014;Álvarez and Sánchez-Blanco, 2014). Therefore, the ability of water conservation was crucial for plant species to adapt salt stress (Fernández-García et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Plant photosynthesis and growth are largely determined by their ability to take up water under salt stress (Farissi et al, 2013). Increasing root/shoot ratio has been found in many salt-stressed woody seedlings/saplings (Fernández-García et al, 2014;González et al, 2012;Álvarez and Sánchez-Blanco, 2014), which was probably associated with the osmotic effect of salt stress (Fernández-García et al, 2014). Ranjit et al (2016) suggested that roots and shoots had distinct mechanisms of responses to salt stress.…”

Section: Introductionmentioning

confidence: 98%

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Effects of salt stress on eco-physiological characteristics in Robinia pseudoacacia based on salt-soil rhizosphere

Mao

Zhang

Cao

et al. 2016

Science of The Total Environment

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Robinia pseudoacacia is the main arbor species in the coastal saline-alkali area of the Yellow River Delta. Because most studies focus on the aboveground parts, detailed information regarding root functioning under salinity is scare. Root traits of seedlings of R. pseudoacacia including morphological, physiological and growth properties under four salinity levels (CK, 1‰, 3‰ and 5‰ NaCl) were studied by the pot experiments to better understand their functions and relationships with the shoots. The results showed that seedling biomass decreased by the reduction of root, stem and leaf biomass with the increase of salinity levels. With increasing salinity levels, total root length (TRL) and total root surface area (TRSA) decreased, whereas specific root length (SRL) and specific root area (SRA) increased. Salt stress decreased root activity (RA) and the maximum net photosynthetic rate (Amax) and increased the water saturation deficit (WSD) significantly in the body. Correlation analyses showed significantly correlations between root morphological and physiological parameters and seedling biomass and shoot physiological indexes. R. pseudoacacia seedlings could adapt to 1‰ salinity by regulating the root morphology and physiology, but failed in 5‰ salinity. How to adjust the water status in the body with decreasing water uptake by roots was an important way for R. pseudoacacia seedlings to adapt to the salt stress.

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