Characterizing the effects of salt stress in Calendula officinalis L.

Journal of Applied Botany and Food Quality

Monica Boscaiu¹  Lacramioara Oprica²  Marius Nicusor Grigore²  Federico Martinelli³  Dinesh Kumar⁴  Aleksandra Kozminska⁵  Mohamad Al Hassan⁶  Oscar Vicente⁷ 

[1] Agroforest Mediterranean Institute (IAM, UPV), Universitat Politècnica de València, Spain;Alexandru Ioan Cuza University, Faculty of Biology, Carol I, 20 A, 700505 Iasi, Romania;Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy;Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, SpainPermenant address: Department of Botany, University of Delhi, Delhi 110007, India;Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, SpainPermenant address: Institute of Plant Biology and Biotechnology - Unit of Botany and Plant Physiology, University of Agriculture in Krakow, 31-425 Krakow, 29 Listopada 54 Ave., Poland;Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, SpainPresent address: The New Zealand Institute for Plant & Food Research Limited (PFR), Mt Albert Research Centre, Private Bag 92169, Auckland, New Zealand;Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain;

关键词: Calendula;    ions;    osmolytes;    proline;    salt stress;   

DOI  :  10.5073/JABFQ.2017.090.040

来源: DOAJ

【 摘 要 】

In this study the effects of salt stress on growth and several stress markers were investigated in the ornamental and medicinal plant Calendula officinalis. One month old plants were submitted to increasing concentrations of salt up to 150mM NaCl for a period of 30 days. Salinity affected growth in terms of stem length and fresh weight of the plants, but water content remained unchanged indicating a certain tolerance to low and mild concentrations of salt. Although Na+ and Cl− increased in parallel to applied salt treatments, the levels of K+ and Ca2+ showed no significant change, while Mg2+ levels recorded a two folds increase upon the application of the highest salt concentration. Other measured parameters showed a more significant change, notably proline that registered a nine folds increase under salt stress. In conclusion, although plants suffered from salt stress as shown by the degradation of photosynthetic pigments and increased MDA levels, they continued their vegetative growth under low concentrations of salt. The main mechanisms of response to stress in this species are based on the insurance of K+ and Ca2+ homeostasis and the accumulation of proline as a functional osmolyte.

【 授权许可】

Unknown