SOME DELETERIOUS EFFECTS OF LONG-TERM SALT STRESS ON GROWTH, NUTRITION, AND PHYSIOLOGY OF GERBERA (<i>GERBERA JAMESONII</i>L.) AND POTENTIAL INDICATORS OF ITS SALT TOLERANCE

Don, Kapila Kumara Ganege; Xia, Yi; Zhu, Zhujun; Chang, Le; Wijeratne, A.W.

doi:10.1080/01904167.2010.512058

Cited by 20 publications

(12 citation statements)

References 50 publications

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“…The proline concentration increase in the root and leaf in all species under salinity may be the result of a decrease in the proline degradation (Hare et al, 1999) or of an increase in the proline biosynthesis (Lutts et al, 1999). In accordance with our results, Murillo-Amador et al (2014) reported an increase of the proline concentration in the leaves of A. vera plants and other researchers also noted this increase in other ornamental potted plants as Gerbera jamesonii L. (Don et al, 2010) and Delonix regia (Patel et al, 2009) subjected to the salt stress.…”

Section: Discussionsupporting

confidence: 91%

Tolerance mechanisms of three potted ornamental plants grown under moderate salinity

García‐Caparrós

Llanderal

Pestana

et al. 2016

Scientia Horticulturae

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The scarcity of water in the Mediterranean area has frequently led to the use of saline water in order to irrigate ornamental plants in many nurseries. However, before the large-scale use of such waters, the ways in which the plants deal with the salinity need to be evaluated. Plants of Aloe vera L. Burm, Kalanchoe blossfeldiana Poelln and Gazania splendens Lem sp. were grown in pots with a mixture of sphagnum peatmoss and Perlite. In order to evaluate the effects of different levels of salinity, three treatments using different NaCl concentrations (Electrical conductivity = 2.0 (control), 4.5 and 7.5 dS m −1) were applied over a period of 60 days. At the end of the experiment, the growth, physiological parameters and mineral content of the roots and leaves were assessed for each salinity treatment. After 60 days of exposure to salinity, the total biomass of all species decreased similarly. The mineral composition of roots and leaves was clearly affected. Osmolytes, such as proline, played an important role in the osmotic adjustment in all species increasing in the roots and leaves at the higher EC i. Different mechanisms of the salt tolerance were triggered in each species. A vera plants showed Na + accumulation at the root level and a decrease in succulence index of leaves. K. blossfeldiana plants shed leaves to release Na + and G. splendens plants accumulated Cl − and Na + at the root level, secreted salt from leaves, lost salt by shedding of old leaves and increased the succulence index of remaining leaves. We concluded that the use of saline waters is feasible for growing these ornamental plants, and G. splendens seems to be particularly well adapted to salinity, a consideration that is particularly relevant in arid saline areas.

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Section: Discussionsupporting

confidence: 91%

Tolerance mechanisms of three potted ornamental plants grown under moderate salinity

García‐Caparrós

Llanderal

Pestana

et al. 2016

Scientia Horticulturae

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“…In contrast, chlorophyll content in salt tolerant plants either do not decline or rise with increasing salinity (Patade et al, 2006). Chlorophyll concentration can be used as a sensitive indicator of the cellular metabolic state; thus, its decrease signifies toxicity in tissues due to accumulation of ions (Don et al, 2010). In our experiment, chlorophyll contents decreased with a slow slope (20%) and rapid slope (59%) with increasing NaCl supply of up to 132 mM in tolerant variant and source variety, respectively.…”

Section: Resultsmentioning

confidence: 47%

Evaluation of sugarcane (Saccharum officinarum L.) somaclonal variants tolerance to salinity in vitro and in vivo cultures

Shomeili¹,

Nabipour²,

Meskarbashee³

et al. 2011

Afr. J. Biotechnol.

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Tissue culture technique was used to obtain salt tolerant variants from embryogenic calli of sugarcane (Saccharum sp. Var. CP48-103) that were cultured on a selective medium containing different levels of NaCl (0, 33, 66, 99 and 132 mM). A total of four plants which regenerated from the tolerant calli were selected but the best in vigor were grown in in vitro and hydroponic systems under salinity stress (with the previous levels) as compared to source variety. With increasing supply of NaCl in both systems, root growth was more adversely affected than shoot growth. Chlorophyll contents showed a decreasing trend and dry matter yield of plants reduced but in a slow rate in tolerant somaclone than source variety. The tissues analysis showed that at high salt concentration, Cl and Na + content in shoot and root increased. With rising salt concentration from 0 to 132 mM, content of Cl in shoot and root of tolerant variant changed and was lower than the parent. In conclusion, this variant probably had lowest genetic ratio of shoot: root chloride due to minimum transport of Cl from the root to shoot. Also this variant had high content of Ca 2+ in shoot and high K + /Na + ratio at all salinity levels. Thus, it probably has genetic potential to avoid harmful ions accumulation.

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“…In contrast, chlorophyll content in salt tolerant plants either do not decline or rise with increasing salinity (Patade et al, 2006). Chlorophyll concentration can be used as a sensitive indicator of the cellular metabolic state; thus, its decrease signifies toxicity in tissues due to accumulation of ions (Don et al, 2010). The rate of salt accumulation in shoots of salt tolerant plants can be determined by the rate of transpiration.…”

Section: In Vitro Salinity Screeningmentioning

confidence: 99%

“…Salinity still remains the major abiotic stresses that limit and pose a threat to agricultural production in many parts of the world (Altman, 2003;Don et al, 2010). While, numbers of mechanisms relating to improved stress adaptation in crops have been suggested, the fact remains that their association with genetic gains for yield and their relative importance in different salinity-prone environments are still only partially defined.…”

Section: Evaluation In Pot Experimentsmentioning

confidence: 99%

Evaluation of Differential Physiological and Biochemical Response of Sugarcane (Saccharum spp. Complex cv. Co 94012) Parent and Mutant’s in Response to Salt Stress

Gadakh¹,

Patel²,

Ban³

2017

IJBSM

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The present investigation carried out at Main Sugarcane Research Station, Navsari Agricultural University, Navsari during 2011−2014 to develop salt tolerance lines in sugarcane. Sugarcane mutants against salt tolerance were derived using in vitro mutagenesis and regeneration under NaCl stress. Sugarcane cv. 94012 was used for callus development from meristimatic leaf whorl on MS medium supplemented with 4 mg/l 2,4-D+2% sucrose. At treatment of Ethyl Methane Sulphonate (0.5%) for 2 hours treatment 48.60% calli survived similarly out of four concentration of NaCl 100 mM concentration of NaCl give at least 50.20% survived of calli. So these concentrations were used for development of salt tolerant mutant in sugarcane. The calli were treated with EMS lethal dose (LD 50) placed on shoot regeneration media containing LD 50 concentration of NaCl. The plants which regenerated from the tolerant calli were grown in pot culture system under five levels of salinity stress as compared to parental plants (source variety). With increasing supply of NaCl, root growth was more adversely affected. The growth of shoot, Chlorophyll content, photosynthesis rate, stomatal conductance and dry matter showed a decreasing trend but it shows significantly slow rate in tolerant mutants than parental plants. Mutant plants performed significantly well than parental plants in salt stress condition in all physiological and biochemical parameters. The result showed that high salt concentration Na + content in shoot of tolerant mutant and but was less than the normal plant. While, K + content in shoot was high in tolerant mutants than normal plants.

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SOME DELETERIOUS EFFECTS OF LONG-TERM SALT STRESS ON GROWTH, NUTRITION, AND PHYSIOLOGY OF GERBERA (GERBERA JAMESONIIL.) AND POTENTIAL INDICATORS OF ITS SALT TOLERANCE

Cited by 20 publications

References 50 publications

Tolerance mechanisms of three potted ornamental plants grown under moderate salinity

Tolerance mechanisms of three potted ornamental plants grown under moderate salinity

Evaluation of sugarcane (Saccharum officinarum L.) somaclonal variants tolerance to salinity in vitro and in vivo cultures

Evaluation of Differential Physiological and Biochemical Response of Sugarcane (Saccharum spp. Complex cv. Co 94012) Parent and Mutant’s in Response to Salt Stress

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