Salt stimulation of growth and photosynthesis in an extreme halophyte, Arthrocnemum macrostachyum

Plant Biology
S Redondo-GómezA J Davy

Abstract

Halophytes that are capable of tolerating a wide range of salinity may grow best at intermediate salinities, but the physiological mechanisms underlying positive growth responses to salinity are not clear. This work investigated the growth of Arthrocnemum macrostachyum (Moric) C. Koch (a halophytic C3 shrub) over a wide range of salinities, and the extent to which its responses can be explained by photosynthetic physiology. Growth, gas exchange and chlorophyll fluorescence characteristics of plants were examined in a glasshouse experiment; tissue concentrations of photosynthetic pigments, ash, sodium, potassium, calcium and nitrogen were also determined. Plants showed marked stimulation of growth by salt, with a broad optimum of 171-510 mm NaCl for relative growth rate (RGR). Stimulation of RGR appeared to depend mainly on an increase in specific shoot area, whereas reduced RGR at high salinity (1030 mm) could be attributed to a combination of lower unit shoot (leaf) rate and lower shoot mass fraction. The non-saline treatment plants had the greatest fraction of non-photosynthetic, atrophied surface area. However, net photosynthesis (A) was also stimulated by NaCl, with an optimum of c. 510 mm NaCl. The responses of A to salini...Continue Reading

References

Aug 12, 2000·Journal of Experimental Botany·K Maxwell, G N Johnson
Feb 14, 2002·Plant, Cell & Environment·R. Munns
Sep 27, 2002·Annals of Botany·R HuntA P Askew
Dec 14, 2004·Ecotoxicology and Environmental Safety·Asish Kumar Parida, Anath Bandhu Das
Aug 9, 2007·Annals of Botany·Susana Redondo-GómezM Enrique Figueroa
May 9, 2008·Annals of Botany·Susana Redondo-GómezAnthony J Davy

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Citations

Apr 15, 2014·Marine Drugs·Maria João RodriguesLuísa Custódio
Dec 21, 2010·Plant Physiology and Biochemistry : PPB·Jesús CambrolléManuel Enrique Figueroa
Sep 14, 2010·Journal of Hazardous Materials·Susana Redondo-GómezLuis Andrades-Moreno
Feb 13, 2016·International Journal of Systematic and Evolutionary Microbiology·Maria CamachoHans-Peter Klenk
Jan 13, 2015·Plant Science : an International Journal of Experimental Plant Biology·Lingxia WangWei Chen
Jun 30, 2016·FEMS Microbiology Ecology·Merit Del R Mora-RuizRamon Rosselló-Móra
Sep 28, 2013·Journal of Proteome Research·Lingxia WangWei Chen
Oct 23, 2016·Plant Biology·S Navarro-TorreI D Rodríguez-Llorente
Sep 14, 2016·International Journal of Systematic and Evolutionary Microbiology·Maria CamachoMaria Del Carmen Montero-Calasanz
Dec 20, 2016·Ecological Applications : a Publication of the Ecological Society of America·Lisa M SchileJ Patrick Megonigal
Jul 5, 2017·Toxicology Mechanisms and Methods·Manel GargouriAbdelfattah El Feki
Oct 17, 2017·International Journal of Systematic and Evolutionary Microbiology·Maria CamachoMaria Del Carmen Montero-Calasanz
Aug 5, 2016·PloS One·Mohamad Al HassanOscar Vicente
Aug 1, 2016·Functional Plant Biology : FPB·Louis Moir-BarnetsonTimothy D Colmer
May 5, 2017·Journal of Experimental Botany·Jayakumar BoseStephen D Tyerman
Apr 17, 2021·Plant Physiology and Biochemistry : PPB·Walid DerbaliHans-Werner Koyro
Apr 8, 2021·Physiologia Plantarum·Hassan Ahmed Ibraheem AhmedSergey Shabala
Aug 17, 2021·Frontiers in Plant Science·Raquel CarmonaF Xavier Niell
Aug 28, 2021·Cells·Abdul HameedBrent L Nielsen
Oct 26, 2021·Journal of the Science of Food and Agriculture·María Del Carmen Rodríguez-Hernández, Idoia Garmendia

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