Dr Maria Vivas



Postdoctoral Fellow

Department

Biochemistry, Genetics and Microbiology
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Research Profiles

The maternal environmental effect is caused when the phenotype of a plant is shaped by the biotic and abiotic conditions to which its parents are subjected, regardless of DNA mutations. If we want to harness the full productive potential of a tree, we need to understand maternal environmental effects. My research targets that challenge – I study whether maternal environments strongly differing in biotic and abiotic characteristics have any influence on seedling performance, resistance and fungal communities in the foliage. I work on Eucalyptus grandis trees because Eucalyptus species are amongst the most widely utilized trees for the establishment of plantations globally. If we learn to what extent maternal environment influences its progenies, we may be able to optimise tree improvement in a changing environment.

 

My previous research was focused to provide a better understanding of how to better manage pitch canker disease on Pinus pinaster. This study included the evaluation of genetic and environmental variability of P. pinaster susceptibility to the pathogen fungus Fusarium circinatum. And, the assessment of the influence that environmental maternal effects have on these susceptibility patterns. Moreover, I have been involved in different projects that highlighted that opposed to seeing Phytophthora cinnamomi as the primary cause of the oak decline in southwestern Spain, there is a complex suite of soil traits that also needs to be taken into account to understand die-back. 

 

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Book Chapters
Vivas M, Cubera E, Moreno G, Solla A. 2008. The decline of Quercus ilex and Q. suber in the Iberian Peninsula. In: Agroforestry systems as a technique for sustainable land management. Mosquera-losada MR, Rigueiro-Rodriguez A. (eds). Agencia Española de Cooperación Internacional, pp 225-233.
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Publication
Bose T, Wingfield MJ, Roux J, Vivas M, Burgess TI. (2018) Community composition and distribution of Phytophthora species across adjacent native and non-native forests of South Africa. Fungal Ecology 36:17-25. 10.1016/j.funeco.2018.09.001https://www.sciencedirect.com/science/article/pii/S1754504818301740
Vivas M, Crous CJ, Dames JF, van der Linde JA, Coetzee MPA, Roux J. (2018) Arbuscular mycorrhizal fungi persist in dying Euphorbia ingens trees. South African Journal of Botany 115:12-17. 10.1016/j.sajb.2017.12.009
Tchotet Tchoumi JM, Coetzee MPA, Vivas M, Rajchenberg M, Roux J. (2017) Wood-rotting basidiomycetes associated with declining native trees in timber-harvesting compartments of the Garden Route National Park of South Africa. Austral Ecology 42:947-963. 10.1111/aec.12524
Vivas M, Kemler M, Mphahlele MM, Wingfield MJ, Slippers B. (2017) Maternal effects on phenotype, resistance and the structuring of fungal communities in Eucalyptus grandis. Environmental and Experimental Botany 140:120-127. 10.1016/j.envexpbot.2017.06.002
Tchotet Tchoumi JM, Vivas M, Coetzee MPA, Rajchenberg M, Roux J. (2017) Wood-rotting Basidiomycetes associated with declining native trees in the Garden Route National Park (GRNP) of South Africa. South African Journal of Botany 10.1016/j.sajb.2017.01.183
Vivas M, Kemler M, Slippers B. (2015) Maternal effects on tree phenotypes: considering the microbiome. Trends in Plant Science 20(9):541–544. 10.1016/j.tplants.2015.06.002
Corcobado T, Vivas M, Moreno G, Solla A. (2014) Ectomycorrhizal symbiosis in declining and non-declining Quercus ilex. Forest Ecology and Management 324:72-80. 10.1016/j.foreco.2014.03.040
Vivas M, Nunes C, Coimbra MA, Solla A. (2014) Maternal effects and carbohydrate changes of Pinus pinaster after inoculation with Fusarium circinatum. Trees 28(2):373-379. 10.1007/s00468-013-0955-0
Vivas M, Nunes C, Coimbra MA, Solla A. (2014) Antioxidant activity of Pinus pinaster infected with Fusarium circinatum is influenced by maternal effects. Forest Pathology 44(4):337-340. 10.1111/efp.12111
Vivas M, Zas R, Sampedro L, Solla A. (2013) Environmental Maternal Effects Mediate the Resistance of Maritime Pine to Biotic Stress. PLoS ONE 8(7):e70148. 10.1371/journal.pone.0070148 PDF
Vivas M, Martin JA, Gil L, Solla A. (2012) Evaluating methyl jasmonate for induction of resistance to Fusarium oxysporum, F. circinatum and Ophiostoma novo-ulmi. Forest Systems 21(2):289-299. 10.5424/fs/2012212-02172
Vivas M, Zas R, Solla A. (2012) Screening of Maritime pine (Pinus pinaster) for resistance to Fusarium circinatum, the causal agent of Pitch Canker disease. Forestry 85(2):185-192. 10.1093/forestry/cpr055
Vivas M, Solla A. (2012) Aplicaciones de BABA y BTH en brinzales de Pinus pinaster para la inducción de resistencia ante Fusarium circinatum. Cuadernos de la Sociedad Española de Ciencias Forestales 36:55-60. PDF