Anatomical and Metabolic Responses to Waterlogging and Salinity in Spartina alterniflora and S. patens (Poaceae)

Naidoo, G.; McKee, Karen L.; Mendelssohn, I. A.

doi:10.2307/2444942

Cited by 63 publications

(23 citation statements)

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“…, 1994). Tolerance based on metabolic adaptations, such as the production of alcohol dehydrogenase (ADH) (Chan & Burton, 1992; Naidoo et al. , 1992; Kato‐Noguchi, 1999), is usually thought to be connected with only short‐term effects.…”

Section: Introductionmentioning

confidence: 99%

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Response to flooding intensity in Elytrigia repens, E. intermedia (Poaceae: Triticeae) and their hybrid

Mahelka

2006

Weed Research

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Summary Response to flooding intensity in three closely related taxa, Elytrigia repens, E. intermedia and their hybrid was studied. Plants were exposed to three intensities of flooding for a 30‐day period. Response to flooding intensity was estimated by measuring dry mass of the following: total biomass, above‐ground living biomass, above‐ground dead biomass, below‐ground biomass, rhizome and root mass and by the allocation of dry mass into rhizomes and root:shoot ratio. Reduction of nearly all the biomass compartments with increasing flooding intensity was observed in the three taxa. All three taxa can thus be regarded as flood‐intolerant. Based on the parameters measured, E. repens is regarded as the relatively most flooding‐tolerant, E. intermedia as the least tolerant, while the hybrid displayed intermediate flooding tolerance. The higher flooding tolerance in E. repens was likely related to its ability to accumulate a sufficient mass of rhizomes before flooding, due to higher regeneration ability. E. repens also displayed the highest phenotypic plasticity, as deduced from the reaction norms constructed for total biomass and rhizome mass of particular clones of the three taxa studied. This indicates that, on the species level, E. repens is better adapted to changing environmental conditions and it can be expected to colonize flooded soils. Both Elytrigia species also occur as weeds: E. intermedia grows in agricultural environments in warm regions, while E. repens infests many different types of habitats. Where they co‐occur, hybridization between them may lead to the enrichment of their gene pools with genes responsible for survival of the parental species under extreme conditions; their weedy potential may thus be enhanced.

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Section: Introductionmentioning

confidence: 99%

“…Flooding tolerance is of crucial importance in habitats being periodically flooded. In such cases, floods act as a limiting parameter for the presence of certain species (Naidoo et al. , 1992; Rubio et al.…”

Section: Introductionmentioning

confidence: 99%

Response to flooding intensity in Elytrigia repens, E. intermedia (Poaceae: Triticeae) and their hybrid

Mahelka

2006

Weed Research

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“…The ability to sustain these signals and responses over sustained episodes is a unique feature of wetland‐tolerant vegetation (Pezeshki ). While rhizosphere oxygenation has been argued as the primary avenue of plant survival in oxygen depleted soils (Naidoo et al ), others have identified sustained fermentative respiration as the decisive survival strategy (DeLaune et al ). The ability to rapidly produce alcohol dehydrogenase (ADH), the enzyme which catalyzes the reduction of acetaldehyde to ethanol during alcoholic fermentation, is a primary means of sustaining fermentative respiration, by reducing the reactive and toxic acetaldehyde created during pyruvate decomposition (Pezeshki ).…”

Section: Discussionmentioning

confidence: 99%

Biogeochemical Implications of Episodic Impoundment in a Restored Tidal Marsh of San Francisco Bay, California

Windham‐Myers

Ward

Marvin-DiPasquale

et al. 2011

Restoration Ecology

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Impounded tidal conditions often compromise coastal marsh restoration goals, through vegetation loss and other biogeochemical feedbacks. To determine if episodic marsh impoundments could be partially responsible for the observed cordgrass (Spartina foliosa) dieback at Crissy Field, Golden Gate National Recreation Area, we examined sulfur chemistry and plant stress along transects between and during tidal inlet closure events from 2007 to 2008. During closures, porewater sulfide (PW S 2− ) concentrations did not respond consistently among sites, nor did they increase to levels likely to cause stress damage to cordgrass (>1 mM). However, sediment solid-phase total reduced sulfur (TRS) concentrations did respond strongly to closures both at surface and subsurface depth intervals, and they were greatest in sites with high organic matter content (>5%). The temporal patterns of both PW S 2− and TRS suggest that while sulfate reduction may be enhanced during closure events, the free sulfide produced is largely precipitated into solid-phase minerals. Even without millimolar levels of PW S 2− , plant stress was observed during closures, as indicated by a buildup of ethanol in root tissues, a by-product of fermentative respiration brought on by limited oxygen availability. Further, enhanced sulfate reduction may be related to the higher relative concentrations of methylmercury in low intertidal surface sediments observed during closure events. These data suggest that, in support of vegetated tidal marsh restoration goals, tidal flows should be maintained actively to reduce the impact of impoundment events on marsh biogeochemistry and productivity.

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“…Spartina alterniflora is much more tolerant of flooding than S . patens (Naidoo et al 1992). Consequently, this species was able to persist at the lowest elevations throughout the changing hydrologic regime while simultaneously expanding into higher elevations.…”

Section: Discussionmentioning

confidence: 99%

Responses of Plant Communities to Incremental Hydrologic Restoration of a Tide‐Restricted Salt Marsh in Southern New England (Massachusetts, U.S.A.)

Smith

Roman

James‐Pirri

et al. 2009

Restoration Ecology

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Hydrologic restoration of Hatches Harbor, a tiderestricted marsh on Cape Cod (Massachusetts), has resulted in significant plant community changes 7 years following the reintroduction of seawater. Since 1999, incremental increases in flow through a tide-restricting dike have facilitated the rapid decline of salt-intolerant vegetation, while encouraging the expansion of native salt marsh taxa. These changes show strong spatial gradients and are correlated with marsh surface elevation, distance from the point of seawater entry, and porewater salinity.Common reed (Phragmites australis) has not decreased in abundance but has migrated a considerable distance upslope. In the wake of this retreat native halophytes have proliferated. Now that maximum flow through the existing dike structure has been reached, continued recovery may be limited less by changing physicochemical conditions and more by rates of growth, seed dispersal, and seed germination of salt marsh taxa.

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Anatomical and Metabolic Responses to Waterlogging and Salinity in Spartina alterniflora and S. patens (Poaceae)

Cited by 63 publications

References 0 publications

Response to flooding intensity in Elytrigia repens, E. intermedia (Poaceae: Triticeae) and their hybrid

Response to flooding intensity in Elytrigia repens, E. intermedia (Poaceae: Triticeae) and their hybrid

Biogeochemical Implications of Episodic Impoundment in a Restored Tidal Marsh of San Francisco Bay, California

Responses of Plant Communities to Incremental Hydrologic Restoration of a Tide‐Restricted Salt Marsh in Southern New England (Massachusetts, U.S.A.)

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