Caio Guilherme Pereira


(Guilherme Pereira, C.; Pereira, C.G.)

Postdoctoral Associate

Des Marais Lab @ Massachusetts Institute of Technology

Visiting Research Fellow

The Arnold Arboretum @ Harvard University

I'm a plant biologist with strong interests in the fields of ecology and evolution. My main objective is to understand the functioning of plants, especially those that occur in severely nutrient-impoverished environments. I'm aiming to discover the consequences of their functioning for vegetation patterns, composition and diversity. My research is mostly experimental, but I also use observational and modelling approaches to achieve my goals. Since my move to the Des Marais Lab at the Massachusetts Institute of Technology (MIT), my primary research goal has been to understand the molecular mechanisms of plant-environment interaction.

Recent News

New paper in Plant and Soil

In our recent paper, published in Plant and Soil, we propose that leaf [Mn] offers a method to screen for belowground plant functional types related to phosphorus acquisition in nutrient-impoverished soils. This approach can be used in selection of desirable crop genotypes and in the exploration of anomalous strategies in putatively mycorrhizal and non-mycorrhizal families.

Sep 15, 2020

New paper in International Journal of Plant Sciences

Our recent review paper, entitled "The Genetic Basis of Plant Functional Traits and the Evolution of Plant-Environment Interactions", has just been published in a special issue of the International Journal of Plant Sciences dedicated to the evolution of functional traits in plants.

Feb 4, 2020

New paper in Journal of Experimental Botany

In our recent study, published in Journal of Experimental Botany, we showed that increasing calcium (Ca) supply enhanced the preferential allocation of phosphorus (P) to palisade mesophyll cells under high P availability, without a significant change in whole leaf [P]. Calcifuges showed a greater palisade mesophyll [P] compared with soil-indifferent species, corresponding with their greater P sensitivity. This study advances our mechanistic understanding of Ca-enhanced P toxicity, demonstrating its role in the calcifuge distribution of Proteaceae.

Apr 23, 2019

Visiting fellow at Harvard University!

I have been offered an appointment as a Visiting Research Fellow of the Arnold Arboretum of Harvard University.

Mar 3, 2019

New paper in Journal of Ecology

In our study, published in Journal of Ecology, we showed that with declining soil phosphorus (P) availability across the Jurien Bay chronosequence in south-western Australia, the photosynthetic P-use efficiency (PPUE) of every studied species - from several families - increased. Plants growing on the oldest, nutrient‐impoverished soils exhibited similar CO2-exchange rates as plants growing on nutrient‐richer, younger soils, and extraordinarily high PPUE. This indicates convergence in leaf traits related to photosynthetic nutrient use on severely P‐impoverished sites.

Mar 3, 2019

New paper in New Phytologist

In our study, published in New Phytologist, we provided the first demonstration of calcium‐enhanced phosphorus toxicity across multiple Proteaceae species. We surmise that this phenomenon may partially explain the calcifuge habit of most Proteaceae and is therefore critical for the management of this iconic Australian family. This study represents a major advance towards an understanding of the physiological mechanisms of phosphorus toxicity and its role in the distribution of Proteaceae.

Oct 3, 2018

New paper in New Phytologist

In our recent study, published in New Phytologist, we have assessed the implications that phosphorus (P) availability and phylogenetic constraints might have for P compartmentation in eudicots. We showed that P allocation to different cell types may differ depending on the soil P availability in the habitat where species evolved, and that there is no phylogenetic pattern in P allocation within eudicots. We surmise that preferential allocation of P to mesophyll cells is a trait that evolved multiple times in response to P limitation, which is at variance with the prevailing model that eudicots exhibit a single P-allocation pattern.

Feb 17, 2018

Welcome to my webpage!

Here you will find general information about me and my research. Please do not hesitate to contact me in case of any question regarding my work.