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International Journal of Plant Biology is published by MDPI from Volume 13 Issue 1 (2022). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with PAGEPress.
Article

Hormonal Response and Root Architecture in Arabidopsis thaliana Subjected to Heavy Metals

1
School of Agricultural, Forestry, Food and Environmental Sciences (SAFE), University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy
2
Department of European and Mediterranean Cultures, Architecture, Environment and Cultural Wealth, University of Basilicata, 5100 Matera, Italy
*
Author to whom correspondence should be addressed.
Int. J. Plant Biol. 2014, 5(1), 5226; https://doi.org/10.4081/pb.2014.5226
Received: 4 December 2013 / Revised: 23 April 2014 / Accepted: 23 April 2014 / Published: 29 May 2014
In this work, specific concentrations of cadmium, copper and zinc in double combination, were supplied for 12 days to growing seedlings of the model species Arabidopsis thaliana. Metal accumulation was measured in roots and shoots. Microscopic analyses revealed that root morphology was affected by metals, and that the root and shoot levels of indole-3-acetic acid, trans-zeatin riboside and dihydrozeatin riboside varied accordingly. Minor modifications in gibberellic acid levels occurred in the Zinc treatments, whereas abscisic acid level did not change after the exposition to metals. Reverse transcription polymerase chain reaction analysis of some genes involved in auxin and cytokinin synthesis (AtAAO, AtNIT and AtIPT) revealed that their expression were not affected by metal treatments. The root morphological alterations that resulted in an increased surface area, due to the formation of root hairs and lateral roots, could be signs of the response to metal stress in terms of a functionally-addressed reorientation of root growth. The root system plasticity observed could be important for better understanding the manner in which the root architecture is shaped by environmental and hormonal stimuli.
Keywords: abiotic stresses; cadmium; copper; hormones; zinc abiotic stresses; cadmium; copper; hormones; zinc
MDPI and ACS Style

Vitti, A.; Nuzzaci, M.; Scopa, A.; Tataranni, G.; Tamburrino, I.; Sofo, A. Hormonal Response and Root Architecture in Arabidopsis thaliana Subjected to Heavy Metals. Int. J. Plant Biol. 2014, 5, 5226. https://doi.org/10.4081/pb.2014.5226

AMA Style

Vitti A, Nuzzaci M, Scopa A, Tataranni G, Tamburrino I, Sofo A. Hormonal Response and Root Architecture in Arabidopsis thaliana Subjected to Heavy Metals. International Journal of Plant Biology. 2014; 5(1):5226. https://doi.org/10.4081/pb.2014.5226

Chicago/Turabian Style

Vitti, Antonella, Maria Nuzzaci, Antonio Scopa, Giuseppe Tataranni, Imma Tamburrino, and Adriano Sofo. 2014. "Hormonal Response and Root Architecture in Arabidopsis thaliana Subjected to Heavy Metals" International Journal of Plant Biology 5, no. 1: 5226. https://doi.org/10.4081/pb.2014.5226

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