Erythrina speciosa (Leguminosae-Papilionoideae) under soil water saturation: morphophysiological and growth responses

Medina, Camilo Lázaro; Sanches, Maria Cristina; Tucci, M. L. S.; Sousa, Carlos Antônio Ferreira de; Cuzzuol, Geraldo Rogério Faustini; Joly, Carlos A.

doi:10.1093/aob/mcp159

Cited by 44 publications

(27 citation statements)

References 56 publications

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“…) and, more recently, tropical trees (Medina et al . ; Herrera ). Flooding tolerances of trees from more arid regions have been studied most often in the context of increasing salinity associated with rising water tables (Jolly & Walker ; Bell ).…”

Section: Introductionmentioning

confidence: 99%

Early physiological flood tolerance is followed by slow post‐flooding root recovery in the dryland riparian tree Eucalyptus camaldulensis subsp. refulgens

Argus

Colmer

Grierson

2014

Plant Cell & Environment

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We investigated physiological and morphological responses to flooding and recovery in Eucalyptus camaldulensis subsp. refulgens, a riparian tree species from a dryland region prone to intense episodic floods. Seedlings in soil flooded for 88 d produced extensive adventitious roots, displayed stem hypertrophy (stem diameter increased by 93%) and increased root porosity owing to aerenchyma formation. Net photosynthesis (Pn) and stomatal conductance (gs) were maintained for at least 2 weeks of soil flooding, contrasting with previous studies of other subspecies of E. camaldulensis. Gradual declines followed in both gs (30% less than controls) and Pn (19% less). Total leaf soluble sugars did not differ between flooded and control plants. Root mass did not recover 32 d after flooding ceased, but gs was not lower than controls, suggesting the root system was able to functionally compensate. However, the limited root growth during recovery after flooding was surprising given the importance of extensive root systems in dryland environments. We conclude that early flood tolerance could be an adaptation to capitalize on scarce water resources in a water-limited environment. Overall, our findings highlight the need to assess flooding responses in relation to a species' fitness for particular flood regimes or ecological niches.

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Section: Introductionmentioning

confidence: 99%

Early physiological flood tolerance is followed by slow post‐flooding root recovery in the dryland riparian tree Eucalyptus camaldulensis subsp. refulgens

Argus

Colmer

Grierson

2014

Plant Cell & Environment

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“…Low gs values soon after flooding have been widely reported for many flood-tolerant or non flood-tolerant species? (Mielke et al 2003, Medina et al 2009, Oliveira and Joly 2010. The rapid decrease of gs may be particularly important for plant survival under flooding because it prevents excessive transpiration in conditions in which the water uptake capacity is being impaired.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic metabolism and quality of Eugenia pyriformis Cambess. seedlings on substrate function and water levels

Scalon

Jeromini

Mussury

et al. 2014

An. Acad. Bras. Ciênc.

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The aim of this research was to evaluate the quality and photosynthetic metabolism of "uvaia" seedlings (Eugenia pyriformis Cambess.) on different substrates and water regimes. ), photosynthesis (µmol m -2 s -1 ) and efficiency of water use (µmol de CO 2 / mmol de H 2 O). Until their 150 th days, the seedlings had higher quality and photosynthetic metabolism when cultured with substrates containing latosol + sand + poultry litter on the two variations assessed and water retention capacity of 50%.

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“…In addition to reporting photosynthetic variables, other longer-term studies of the effects of flooding in tropical trees have included growth responses (Davanso et al 2002;Mielke et al 2003;Lavinsky et al 2007;Medina et al 2009). In this study, the authors did not analyze the effects of flooding on plant growth because the duration of the study (about 2 weeks) was too short to expect sufficient plant growth to allow for comparisons between treatments.…”

Section: Discussionmentioning

confidence: 99%

Effects of soil flooding and changes in light intensity on photosynthesis of Eugenia uniflora L. seedlings

Mielke

Schaffer

2011

Acta Physiol Plant

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The increased frequency of heavy rains as a result of global climate change can lead to flooding and changes in light availability caused by the presence of thick clouds. To test the hypothesis that reduction in light availability can alleviate the harmful effects of soil flooding on photosynthesis, the authors studied the effects of soil flooding and acclimation from high to low light on the photosynthetic performance of Eugenia uniflora. Seedlings acclimated to full sunlight (about 35 mol m -2 d -1 ) for 5 months were transferred to partial sunlight (about 10 mol m -2 d -1 ) and were either subjected to soil flooding or not flooded. Chlorophyll fluorescence was measured throughout the flooding period and leaf gas exchange was measured 16 days after flooding was initiated. Minimal fluorescence yield (Fo) was significantly higher and the quantum efficiency of open PSII centres (Fv/Fm) was significantly lower in flooded than in non-flooded plants in full sunlight. Sixteen days after flooding was initiated, stomatal conductance (gs sat ) and net photosyntheses expressed on a leaf area (A sat-area ), weight (A sat-wt ) and chlorophyll (A sat-Chl ) basis decreased in response to soil flooding. Flooding decreased stomatal conductance by similar amounts in full and partial sunlight, but A sat-area in partial and full sunlight was 3.4 and 16.8 times lower, respectively, in flooded than in non-flooded plants. These results indicate that changes from full to partial sunlight during soil flooding can alleviate the effects of flooding stress on photosynthesis in E. uniflora seedlings acclimated to full sunlight. The responses of photosynthesis in trees to flooding stress may be dependent on changes in light environment during heavy rains.

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Erythrina speciosa (Leguminosae-Papilionoideae) under soil water saturation: morphophysiological and growth responses

Cited by 44 publications

References 56 publications

Early physiological flood tolerance is followed by slow post‐flooding root recovery in the dryland riparian tree Eucalyptus camaldulensis subsp. refulgens

Early physiological flood tolerance is followed by slow post‐flooding root recovery in the dryland riparian tree Eucalyptus camaldulensis subsp. refulgens

Photosynthetic metabolism and quality of Eugenia pyriformis Cambess. seedlings on substrate function and water levels

Effects of soil flooding and changes in light intensity on photosynthesis of Eugenia uniflora L. seedlings

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