VARIATION IN ALCOHOL DEHYDROGENASE ACTIVITY AND FLOOD TOLERANCE IN WHITE CLOVER,
            <i>TRIFOLIUM REPENS</i>

Chan, John W. Y.; Burton, Ronald S.

doi:10.1111/j.1558-5646.1992.tb02078.x

Cited by 18 publications

(11 citation statements)

References 62 publications

(37 reference statements)

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“…Some studies have indicated genetic variation within species in morphological and physiological traits involved in the plants' ability to cope with flooding stress (Chan and Burton, 1992;Lenssen et al, 2004;Ferreira et al, 2007;De Carvalho et al, 2008). Flooding episodes could select genotypes more adapted to tolerate or avoid this stress, resulting in increased genetic diversity between populations and local adaptation.…”

Section: Introductionmentioning

confidence: 99%

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

Silva¹,

Carvalho²,

Ruas³

et al. 2010

Genet. Mol. Res.

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ABSTRACT. The tree species Parapiptadenia rigida, native to southern South America, is frequently used in reforestation of riverbanks in Brazil. This tree is also a source of gums, tannins and essential oils, and it has some medicinal uses. We investigated flooding tolerance and genetic diversity in two populations of P. rigida; one of them was naturally exposed to flooding. Plants derived from seeds collected from each population were submitted to variable periods of experimental waterlogging and submergence. Waterlogging promoted a decrease in biomass and structural adjustments, such as superficial roots with aerenchyma and hypertrophied lenticels, that contribute to increase atmospheric oxygen intake. Plants that were submerged had an even greater reduction in biomass and a high mortality rate (40%). The two populations varied significantly in their RAPD marker profiles, in their ability to produce aerenchyma when waterlogged and to survive when submerged, suggesting ecotypic differentiation between them. Hence, the seasonal flooding that has been challenging the tropical riparian forest appears to be genetically modifying the P. rigida populations exposed to it by selecting individuals with increased ability to live under this condition.

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Section: Introductionmentioning

confidence: 99%

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

Silva¹,

Carvalho²,

Ruas³

et al. 2010

Genet. Mol. Res.

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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%

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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“…Formation of adventitious roots, along with an enhanced biochemical activity of alcohol dehydrogenase (ADH) (Kawase 1981;Armstrong 1982), might have contributed to improved growth during waterlogging. In this context, Chan and Burton (1992) reported that an individual plant, which had a 2-fold difference in ADH activity, also had 25% more growth during waterlogging. Nevertheless, our results are also consistent with the findings of Drew (1980a, 1980b), as they reported that shoot dry weight of wheat initially increased above that of the aerobic controls.…”

Section: Oxygen Concentrations and Growing Medium For Severity Of Watmentioning

confidence: 99%

Seed size and adventitious (nodal) roots as factors influencing the tolerance of wheat to waterlogging

Singh¹,

Singh²

2003

Aust. J. Agric. Res.

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Abstract. In a glasshouse study, two experiments were conducted to understand how inherent variability, such as the seed size or mass, and formation of adventitious nodal roots might influence the tolerance of various wheat and triticale cultivars at different growth stages to waterlogging. Waterlogging at germination resulted in 11% seedling mortality, but the waterlogged seedlings had a 19% increase in shoot mass per plant, with no difference in root mass compared with non-waterlogged seedlings. Waterlogging at the 3-leaf stage was deleterious to only a few cultivars. On average, larger seed resulted in greater plant growth for most of the cultivars, and seed mass was positively related to the plant biomass and adventitious nodal root mass under waterlogged conditions. A decreasing oxygen concentration with increasing duration of waterlogging and soil depth did not affect the plant growth and visual stress symptoms, chlorosis, until the oxygen concentration decreased to less than 10% in the bottom depths. The highest yielding triticale cultivar, Muir, and wheat cultivars Brookton and Frame had the greatest seed mass, plant biomass, and relative growth rates under waterlogged conditions, compared with the lowest yielding wheat cultivars, Amery, Silverstar, and More. However, the degree of 'waterlogging tolerance', expressed as the percent ratio of plant biomass or growth rates under waterlogged conditions relative to the non-waterlogged control conditions, appeared to be greatest for the low-yielding cultivars, indicating a 'cautious approach' when screening tolerant cultivars.A R 0 2 1 7 4 S e e d s i z e a n d t o l e r a n c e t o wa t e r l o g g i n g D . K . S i n g h a n d V . S i n g h

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VARIATION IN ALCOHOL DEHYDROGENASE ACTIVITY AND FLOOD TOLERANCE IN WHITE CLOVER, TRIFOLIUM REPENS

Cited by 18 publications

References 62 publications

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

Evidence of ecotypic differentiation between populations of the tree species Parapiptadenia rigida due to flooding

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

Seed size and adventitious (nodal) roots as factors influencing the tolerance of wheat to waterlogging

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