Understanding plant drought resistance in a Mediterranean coastal sand dune ecosystem: differences between native and exotic invasive species

Antunes, Cristina; Pereira, Ana Isabel; Fernandes, Patricia; Ramos, Margarida; Ascensão, Lia; Correia, Otília; Máguas, Cristina

doi:10.1093/jpe/rtx014

Cited by 34 publications

(17 citation statements)

References 76 publications

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“…As can be seen from Figure 1, the first response of the plant organism to drought as a drought-resistance strategy relies on avoiding water deficit [31] by maintaining tissue Ψ w by increasing water uptake or restricting water loss [32]. At the early steps of drought response, it is mainly achieved by stomata closure, triggered by abscisic acid (ABA).…”

Section: Introductionmentioning

confidence: 99%

Methodology of Drought Stress Research: Experimental Setup and Physiological Characterization

Osmolovskaya

Shumilina

Kim

et al. 2018

IJMS

179

121

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Drought is one of the major stress factors affecting the growth and development of plants. In this context, drought-related losses of crop plant productivity impede sustainable agriculture all over the world. In general, plants respond to water deficits by multiple physiological and metabolic adaptations at the molecular, cellular, and organism levels. To understand the underlying mechanisms of drought tolerance, adequate stress models and arrays of reliable stress markers are required. Therefore, in this review we comprehensively address currently available models of drought stress, based on culturing plants in soil, hydroponically, or in agar culture, and critically discuss advantages and limitations of each design. We also address the methodology of drought stress characterization and discuss it in the context of real experimental approaches. Further, we highlight the trends of methodological developments in drought stress research, i.e., complementing conventional tests with quantification of phytohormones and reactive oxygen species (ROS), measuring antioxidant enzyme activities, and comprehensively profiling transcriptome, proteome, and metabolome.

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Section: Introductionmentioning

confidence: 99%

Methodology of Drought Stress Research: Experimental Setup and Physiological Characterization

Osmolovskaya

Shumilina

Kim

et al. 2018

IJMS

179

121

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“…However, previous studies in coastal ecosystems have focused chiefly on GFTs (Castro‐Díez et al., ; Pakeman et al., ; Stanisci et al., ), and only few of them included MFTs, generally limited to few species and not tested for the whole community (e.g. Antunes et al., ), thus providing only a partial view of the mechanistic determinants of the invasion process in these habitats.…”

Section: Introductionmentioning

confidence: 99%

Make it simpler: Alien species decrease functional diversity of coastal plant communities

Tordoni

Petruzzellis

Nardini

et al. 2019

J Vegetation Science

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Questions: (a) Are there differences in abundance-weighted functional trait values between native and alien species in coastal plant communities? (b) Which functional traits are associated with a higher level of invasion in these communities? (c) Do functional diversity patterns differ between native and alien species? (d) Is alien species occurrence linked to small-scale functional homogenization effects on the resident native species? Location: N-Adriatic coastal ecosystems (Marano and Grado lagoon, Friuli Venezia Giulia region, Italy). Methods:We sampled coastal vegetation within two habitats (foredunes and saltmarshes) along nine belt transects in two sampling sites. Plant species richness and abundance were assessed in 128 plots along with a suite of plant functional traits.We tested for differences in community-weighted means between native and alien species within the two habitats, and Linear Mixed Models provided insights into traits fostering the invasion success among alien species. To check for potential functional homogenization driven by alien species invasion, we explored functional diversity patterns of native and alien species (β and γ functional diversity) and the relationship between α functional diversity and alien cover.Results: Alien species had lower functional diversity than natives and were characterized by lower leaf construction costs coupled with lower drought resistance and higher water transport efficiency. The most abundant aliens were the ones minimizing carbon investment for leaf construction. In addition, we also found evidence for small-scale functional homogenization driven by alien invasion. Conclusions:Our results suggested that native species adopt a resource conservative strategy whereas alien species are characterized by a higher resource acquisition capacity (i.e., acquisitive strategy). Our data also confirmed that alien species are less functionally diverse than natives, potentially driving the community towards small-scale functional homogenization, resulting in a loss of species and a reduction in the functional space. K E Y W O R D S biological invasion, community ecology, community weighted mean, functional homogenization, functional rarefaction, functional traits, functional uniqueness, quantitative methods | 499 Journal of Vegetation Science TORDONI eT al.

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“…Studies in Mediterranean scrub, desert savannas, and tropical dry forests have shown that evergreen species shift water uptake from shallow water to deep water in the dry season (Ellsworth & Sternberg, ; Esquivias, Zunzunegui, Barradas, & Álvarez‐Cansino, ; Grossiord et al., ; Hasselquist, Allen, & Santiago, ; Jackson et al., ). As an adaptation for water absorption and for protection against water deficit, leaf shape can also affect water‐use patterns of plants (Antunes et al., ; Wright, Falster, Pickup, & Westoby, ). Additionally, an important functional syndrome that potentially influences plant water‐use is their water requirement.…”

Section: Introductionmentioning

confidence: 99%

Water source partitioning among plant functional types in a semi‐arid dune ecosystem

Antunes

Díaz‐Barradas

Zunzunegui

et al. 2018

J Vegetation Science

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Question(s):The aim of this work was to characterize the main water sources used by the woody plant community of a semi-arid coastal dune ecosystem. We ask: Do the seasonal water sources used by plants differ between functional types? Does the seasonal drought promote shifts towards deeper soil layers in all plants? Does greater use of deep soil water enables the maintenance of a more favorable plant water status? Do water-sources-use strategies mirror overall drought strategies?Location: Semi-arid coastal dune system in Doñana Biological Reserve, southwest Spain. Methods:We analyzed the oxygen isotope composition of xylem water of fourteen coexisting woody species and compared it to water sources (soil water at different depths, rain and groundwater), both in spring and dry summer. Bayesian isotope mixing models were used to estimate the proportion of each water source used by plants.We tested the influence of different (categorical) traits on plants' water-source-use.We evaluated the relationships between the use of deep soil water and ecophysiological parameters related to water economy (leaf δ 13 C and reflectance water-index).Results: A greater similarity between species was found in periods of higher water availability (spring). Contrastingly, during the dry period the traits considered showed a significant effect on the water sources used and a high inter-specific differentiation was observed. Accordingly, species clustered in five water-use functional groups, exploring water from shallower to deeper soil layers. Greater use of deep soil layers in the dry season was linked to a better seasonal maintenance of plant water status. Conclusions:Coexisting plant functional types segregated along a spectrum of water-source-use under extremely dry conditions, evidencing great soil water partitioning. Relevant seasonal water-use shifts towards deeper soil layers were observed, but not in all species. Furthermore, we confirmed that the water-source-use behavior accompanied broader strategies of drought resistance. K E Y W O R D S coexistence, drought, dry conditions, functional groups, groundwater use, Mediterranean, sandy coastal ecosystem, soil water partitioning, stable isotope mixing model, water sources segregation, water-use shifts 672 | Journal of Vegetation Science ANTUNES ET Al. The study was conducted at a semi-arid Mediterranean coastal dune ecosystem at Biological Reserve of Doñana, southwest of Spain (Aridity index = 0.47) (UNEP 1992; http://www.cgiar-csi.org/ data/global-aridity-and-pet-database). It showed a typical western Mediterranean climate, with a total annual rainfall (August 2012-August 2013) of 566 mm (weather station at RBD: 36°59′19″ N;6°26′35″ W) (see Supporting information: Appendix S1). During the dry season, the well-drained sand, underlying the plant community in Doñana scrub, exacerbates soil drying and water limitation. Soil water content, measured at 10 cm depth, was reduced by 88% from

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Understanding plant drought resistance in a Mediterranean coastal sand dune ecosystem: differences between native and exotic invasive species

Cited by 34 publications

References 76 publications

Methodology of Drought Stress Research: Experimental Setup and Physiological Characterization

Methodology of Drought Stress Research: Experimental Setup and Physiological Characterization

Make it simpler: Alien species decrease functional diversity of coastal plant communities

Water source partitioning among plant functional types in a semi‐arid dune ecosystem

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