Cellular Processes Limiting Leaf Growth in Plants under Hypoxic Root Stress

Smit, Barbara; Stachowiak, Matt; Volkenburgh, Elizabeth Van

doi:10.1093/jxb/40.1.89

Cited by 68 publications

(27 citation statements)

References 25 publications

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“…it contrasts with reports of unchanged +L during flooding (Pereira and Kozlowski, 1977;Zhang and Davies, 1986; Smit and Stachowiak, 1988; Smit et al, 1988), or of marked and sustained decreases in qL (Kramer and Jackson, 1954; Hiron qLs following the initial decrease (Schildwacht, 1989).…”

Section: Co and O Dissolved In Soil Flood Watercontrasting

confidence: 77%

“…Such a loss of shoot hydration could conceivably trigger stomatal closure and slow leaf expansion. This early and temporary leaf water deficit has been ascribed to a reduction in L, following flooding (Kramer, 1969;Hiron and Wright, 1973;Schildwacht, 1989), apparently arising from an O, deficit (Mees and Weatherley, 1957) and / or an accumulation of CO, around the roots (Kramer, 1940;Smit and Stachowiak, 1988). However, there are contrasting reports of the existence and duration of the reduced hydraulic conductivity of flooded roots (Kramer 1940;Mees and Weatherley, 1957;Jackson et al, 1978;Bradford and Hsiao, 1982;Everard and Drew, 1987;Reece and Riha, 1991), arising, in part, from the different methods used to calculate L,.…”

mentioning

confidence: 99%

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A Negative Hydraulic Message from Oxygen-Deficient Roots of Tomato Plants? (Influence of Soil Flooding on Leaf Water Potential, Leaf Expansion, and Synchrony between Stomatal Conductance and Root Hydraulic Conductivity)

et al. 1995

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An important goal in studies of plants stressed at the roots is to establish the relative contributions of hydraulic and chemical messages in mediating adaptive responses of the shoot. In flooded plants, reductions in g, and leaf elongation can occur in the absence of any marked perturbation in leaf water status (Pereira and Kozlowski, 1977; Jackson et al., 1978;Bradford and Hsiao, 1982; Davies, 1986, 1987; Jackson and Hall, 1987), supporting the view that chemical messages predominate. However, it may be premature to disregard completely the involvement of a hydraulic message, since frequent measurements of t,bL at high resolution are rare.

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Section: Co and O Dissolved In Soil Flood Watercontrasting

confidence: 77%

mentioning

confidence: 99%

A Negative Hydraulic Message from Oxygen-Deficient Roots of Tomato Plants? (Influence of Soil Flooding on Leaf Water Potential, Leaf Expansion, and Synchrony between Stomatal Conductance and Root Hydraulic Conductivity)

et al. 1995

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“…Oxygen availability is also an important consideration in potting mixes, as limited oxygen has been shown to decrease shoot and root growth in poplars [35]. Though we did not evaluate oxygen availability in this study, we did observe that the bulk density of the biochar mix was approximately 50 % greater than that of the other mixes, which we expect would decrease oxygen availability.…”

Section: Discussionmentioning

confidence: 66%

Biochar as a Substitute for Vermiculite in Potting Mix for Hybrid Poplar

2013

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The purpose of this study was to evaluate biochar as a substitute for vermiculite in potting mixes for unrooted vegetative cuttings of hybrid poplar as represented by the clone 'NM6' (Populus nigra L. × Populus suaveolens Fischer subsp. maximowiczii A. Henry). We compared three treatments (peat moss (control), peat moss mixed with vermiculite, and peat moss mixed with biochar) at three times (pre-experiment, pre-fertilizer, and post-fertilizer). The biochar and vermiculite mixes had significantly higher cation exchange capacity (CEC) and pre-experiment exchangeable K than the control. Trees grown in the biochar and vermiculite mixes had significantly higher shoot K than the control at pre-fertilizer and post-fertilizer and significantly higher shoot and total biomass at post-fertilizer. The biochar mix was also associated with lower root biomass and higher shoot/root biomass ratio than the vermiculite mix at postfertilizer. Vector analysis indicated that all treatments were deficient in N at pre-fertilizer, and the control was also deficient in K at pre-fertilizer and post-fertilizer. Linear regression confirmed that shoot biomass was strongly correlated (R 2 =0.97) with N and K uptake (in addition to initial cutting diameter), also, root biomass was strongly correlated (R 2 =0.96) with potting mix CEC (in addition to shoot biomass). Luxury consumption of K at pre-fertilizer indicates that the increases in shoot and total biomass observed with the biochar and vermiculite treatments arise from this nutrient being "pre-loaded" in both mixes. We conclude that biochar provides benefits equivalent to vermiculite in terms of key nutrient availability and total biomass productivity.

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“…These authors attributed this finding, among other reasons, to an inhibition of the expansion of the leaf due to the reduction of the extensibility of the cell walls, a determinant growth factor under hypoxic root conditions (Smit et al, 1989).…”

Section: Leaf Areamentioning

confidence: 99%

Effect of waterlogging stress on the growth, development and symptomatology of cape gooseberry (Physalis peruviana L.) plants

Aldana

García

Fischer

2014

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Waterlogging stress in cape gooseberry plants 393 Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. 38(149) AbstractClimate change has altered normal rainfall cycles; causing the flooding of arable land and, thus, affecting agricultural production in Colombia. Two-month-old cape gooseberry plants, propagated by seeds, were subjected to different durations of continuous waterlogging in a greenhouse: 0, 2, 4, 6 and 8 days, with evaluations up to 50 days. The plants were placed in ditches covered with polyethylene and filled with water up to 5 cm above the substrate surface of the pots. The parameters evaluated were: plant height, leaf area, stem diameter, dry weight of the aerial part, root and reproductive organs, and general symptoms following a wilting scale. The 6 and 8-day-waterlogged plants were the most affected by the flooding conditions, presenting the lowest values for all the measured variables. Due to the oxygen stress in the root zone, the plants showed yellowing, epinasty, necrosis and abscission of the leaves, more so in the 8-day-waterlogged plants.Key words: Hypoxia, leaf area, dry weight, symptoms. Efecto del estrés por anegamiento sobre el crecimiento, desarrollo y sintomatología de plantas de uchuva (Physalis peruviana L.) ResumenEl cambio climático ha alterado el ciclo normal de las lluvias, inundando así las tierras arables y afectando la producción agrícola en Colombia. Plantas de uchuva, de 2 meses de edad, y propagadas por semilla, fueron sometidas bajo invernadero a diferentes duraciones de anegamiento continuo: 0, 2, 4, 6 y 8 días y evaluaciones hasta 50 días. Las plantas se colocaron en zanjas cubiertas con polietileno que se llenaron con agua hasta 5 cm por encima de la superficie del sustrato contenido en las macetas. Los parámetros evaluados fueron: altura de planta, área foliar, diámetro del tallo, pesos secos de parte aérea, raíz y órganos reproductivos y escala de síntomas generales de marchitamiento. Las plantas anegadas durante 6 y 8 días presentaron los valores más bajos para todas las variables evaluadas. Debido al estrés por falta de oxígeno en la rizósfera las plantas mostraron amarillamiento, epinastia, necrosis y abscisión de hojas, sobre todo en las de 8 días anegadas.Palabras clave: hipoxia, área foliar, peso seco, síntomas.

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Cellular Processes Limiting Leaf Growth in Plants under Hypoxic Root Stress

Cited by 68 publications

References 25 publications

A Negative Hydraulic Message from Oxygen-Deficient Roots of Tomato Plants? (Influence of Soil Flooding on Leaf Water Potential, Leaf Expansion, and Synchrony between Stomatal Conductance and Root Hydraulic Conductivity)

A Negative Hydraulic Message from Oxygen-Deficient Roots of Tomato Plants? (Influence of Soil Flooding on Leaf Water Potential, Leaf Expansion, and Synchrony between Stomatal Conductance and Root Hydraulic Conductivity)

Biochar as a Substitute for Vermiculite in Potting Mix for Hybrid Poplar

Effect of waterlogging stress on the growth, development and symptomatology of cape gooseberry (Physalis peruviana L.) plants

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