Flooding induces a suite of adaptive plastic responses in the grass <i>Paspalum dilatatum</i>

Insausti, Pedro; Grimoldi, Agustín A.; Chaneton, Enrique J.; Vasellati, Viviana

doi:10.1111/j.0028-646x.2001.257_1.x

Cited by 75 publications

(63 citation statements)

References 36 publications

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“…The increase in leaf sheath length of flooded plants resulted from a high number of longer parenchymatic cells compared to control plants (Insausti et al 2001). Mild drought condition caused a significant change in leaf area of E. crus-galli, it decreased by 18.9% compared to the other which grown in native waterlogged habitat, but no significant change was found in E. colona.…”

Section: Discussionmentioning

confidence: 83%

Differential responses of aquatic and aerobic forms of Echinochloa crus-galli (L.) Beauv. and E. colona (L.) Link. by morpho-physiological and molecular analysis

Khedr

Serag

Shaaban

et al. 2017

Environ. Earth Ecol.

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Echinochloa crus-galli and E. colona are serious weeds around the world. Morphological and biochemical features of aquatic and aerobic forms of both species were investigated experimentally by transplanting the seedlings reciprocally between water-saturated and aerobic soils (70% field capacity). When the plants were grown in water-saturated soil, a significant decrease in tiller height was observed in E. crus-galli, but not in E. colona. Upon growing the plants in aerobic soil, internode length and spike dry weight increased significantly in E. crus-galli, but decreased significantly in E. colona. Growth under aerobic condition caused a significant increase in PEPC/Rubisco ratio, but a significant decrease was observed under water-saturated conditions. When E. crus-galli was transplanted in aerobic soil, several forms of peroxidase were upregulated. Contrarily, in E. colona peroxidase isoforms did not respond to habitat change. Gene expression of ADH in E. colona was constitutive at a fairly high level under native habitats then enhanced with reversing habitat that caused anoxic and mild drought conditions. Both species tend to grow faster under aerobic conditions by modifying the photosynthetic machinery and capacity of scavenging of reactive oxygen species. Furthermore, ADH appears to play a role in supporting growth under water-saturated conditions.

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Section: Discussionmentioning

confidence: 83%

Differential responses of aquatic and aerobic forms of Echinochloa crus-galli (L.) Beauv. and E. colona (L.) Link. by morpho-physiological and molecular analysis

Khedr

Serag

Shaaban

et al. 2017

Environ. Earth Ecol.

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“…Aerenchyma is related to gas storage and diffusion becoming a key tissue in the plant adaptation to aquatic environments (Insausti et al, 2001;Pereira et al, 2010). In addition, this tissue is also important for the storage of O 2 and tissue respiration in wetlands (Drew et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Cadmium tolerance of Typha domingensis Pers. (Typhaceae) as related to growth and leaf morphophysiology

et al. 2017

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Typha domingensis (cattail) is a native macrophyte known by its capacity to tolerate several heavy metals effects and the potential use for phytoremediation. However, in despite that cadmium (Cd) is one of the most toxic pollutants; its effects in T. domingensis biology remain uninvestigated. Thus, the objective of this study was to study the tolerance of T. domingensis to cadmium contamination by evaluating its growth, Cd uptake, leaf anatomy and gas exchange. The experiment was designed using three cadmium concentrations (0, 10 and 50 µM) and ten replicates for 90 days. The cadmium uptake, growth, gas exchange, chlorophyll content and leaf anatomy were evaluated. Data was submitted to ANOVA and Scott-Knott test for P<0.05. Typha domingensis accumulates Cd proportionally to its concentration on the solution and the content of this metal was higher in roots as compared to shoots. Plants showed no significant modifications on growth parameters such as the biomass production, number of leaves, number of clones and the biomass allocation to organs. The photosynthesis, transpiration and chlorophyll content were not modified by Cd. Most anatomical traits evaluated were not modified by the metal but the stomatal density and the proportion of vascular tissues were reduced under 50 µM of Cd. In despite, the leaf anatomy showed no toxicity evidences for any Cd level. The absence of growth reduction and the stability of anatomical and physiological traits give insight about the Cd tolerance of this species. Therefore, T. domingensis is able to overcome Cd toxicity and shows potential for phytoremediation. Keywords

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“…(Grimoldi et al 1999), Paspalum dilatatum Poir. (Insausti et al 2001), and even Arabidopsis (Millenaar et al 2005). Hyponastic growth in R. palustris occurs mainly in petioles of younger leaves, and results from differential cell elongation across the petiole base (Cox et al 2004).…”

Section: Shallow Submergence -Long Durationmentioning

confidence: 99%

Flooding tolerance: suites of plant traits in variable environments

Colmer

Voesenek

2009

Functional Plant Biol.

679

538

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Abstract.Flooding regimes of different depths and durations impose selection pressures for various traits in terrestrial wetland plants. Suites of adaptive traits for different flooding stresses, such as soil waterlogging (short or long duration) and full submergence (short or long duration -shallow or deep), are reviewed. Synergies occur amongst traits for improved internal aeration, and those for anoxia tolerance and recovery, both for roots during soil waterlogging and shoots during submergence. Submergence tolerance of terrestrial species has recently been classified as either the Low Oxygen Quiescence Syndrome (LOQS) or the Low Oxygen Escape Syndrome (LOES), with advantages, respectively, in short duration or long duration (shallow) flood-prone environments. A major feature of species with the LOQS is that shoots do not elongate upon submergence, whereas those with the LOES show rapid shoot extension. In addition, plants faced with long duration deep submergence can demonstrate aspects of both syndromes; shoots do not elongate, but these are not quiescent, as new aquatictype leaves are formed. Enhanced entries of O 2 and CO 2 from floodwaters into acclimated leaves, minimises O 2 deprivation and improves underwater photosynthesis, respectively. Evolution of 'suites of traits' are evident in wild wetland species and in rice, adapted to particular flooding regimes.

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Flooding induces a suite of adaptive plastic responses in the grass Paspalum dilatatum

Cited by 75 publications

References 36 publications

Differential responses of aquatic and aerobic forms of Echinochloa crus-galli (L.) Beauv. and E. colona (L.) Link. by morpho-physiological and molecular analysis

Differential responses of aquatic and aerobic forms of Echinochloa crus-galli (L.) Beauv. and E. colona (L.) Link. by morpho-physiological and molecular analysis

Cadmium tolerance of Typha domingensis Pers. (Typhaceae) as related to growth and leaf morphophysiology

Flooding tolerance: suites of plant traits in variable environments

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