Über die Luftwurzeln von Sonneratia Linn. f. und ihre biologische Bedeutung

Troll, Wilhelm; Dragendorff, Otto; Fromherz, Hans

doi:10.1007/bf01908930

Cited by 40 publications

(11 citation statements)

References 11 publications

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“…Although it was physically impossible to get any considerable amount of gases exchanged over such a long distance (only through diffusion in the wide intercellular spaces of the pneumatophores) their respiratory function was generally accepted until TROLL and DRAGENDORFEF (8) proved by direct measurements that no gas exchange of importance occurred through the pneumatophores of Sonneratia. It seems logical, therefore, to assume that these pneumatophores are necessary…”

Section: Discussionmentioning

confidence: 99%

Effect of the Root System on Tomato Stem Growth

Went

1943

Plant Physiol.

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Section: Discussionmentioning

confidence: 99%

Effect of the Root System on Tomato Stem Growth

Went

1943

Plant Physiol.

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“…This species is fast-growing and can grow up to 4-5 m tall; at maturity, in Japan, it rarely exceeds 6 m. This species develops a highly specialized root system of four main types (cable root, feeding root, anchor root and pneumatophore) (Troll and Dragendorff 1931;Tomlinson 1986). Anatomical knowledge of Sonneratia roots is scanty.…”

Section: Introductionmentioning

confidence: 99%

“…Anatomical knowledge of Sonneratia roots is scanty. There have been some previous investigations dealing with the structure of Sonneratia's pneumatophores as aerating organs (Troll and Dragendorff 1931) and as waterconducting systems (Sun et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Aerenchyma formation and porosity in root of a mangrove plant, Sonneratia alba (Lythraceae)

Purnobasuki

Suzuki

2004

J Plant Res

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Aerenchyma gas spaces are important for plants that grow in flooded and anaerobic sites or habitats, because these gas spaces provide an internal pathway for oxygen transport. The objective of this study is to characterize the development of aerenchyma gas spaces and observe the porosity in roots of Sonneratia alba. Tissue at different developmental stages was collected from four root types, i.e. cable root, pneumatophore, feeding root and anchor root, of S. alba. In S. alba, gas space is schizogenously produced in all root types, and increases in volume from the root meristem to mature root tissues. The aerenchyma formation takes place immediately, or 3-5 mm behind the root apex. At first, cortical cells are relatively round in cross sections (near the root apex); they then become two kinds of cells, rounded and armed, which combine together, forming intercellular spaces behind the root apex. The average dimensions of cortical cells increased more than 1.3 times in the vertical direction and over 3.3 times in the horizontal direction. At maturity, aerenchyma gas spaces are long tuberous structures without diaphragms and with numerous small pores on the lateral walls. Within the aerenchyma, many sclereids grow intrusively. Root porosity in all root types ranged from 0-60%. Pneumatophores and cable roots had the highest aerenchyma area (50-60%).

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“…The aeration of their roots has long been of interest (Scholander et al, 1955 ;Troll & Dragendorff, 1931), including Avicennia marina in particular (Andersen & Kristensen, 1988 ;Brown et al, 1969) . In Avicennia marina the root system may be isolated from the atmosphere for six to seven hours in every tidal cycle (about 12 .5 h) .…”

Section: Introductionmentioning

confidence: 99%

Ventilation and respiration in roots of one-year-old seedlings of grey mangrove Avicennia marina (Forsk.) Vierh.

et al. 1995

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Avicennia marina (Forsk .) Vierh. was grown from seed for 12 months in artificially tidal tanks providing a range of duration and depth of inundation . Plant growth characteristics were measured at harvest. Root aerenchyma development was estimated by pycnometry, root respiration rates by manometry, and the oxygen supply capacity of the above-ground portions of the plant was determined using oxygen electrode chambers . The mass per plant at harvest was influenced by the extent of inundation during growth with maximal growth at intermediate-length (1 .5 to 6 .5 h per tide) inundation periods . Those plants that had been submerged the longest (8 .5 h per tide) had the least root tissue . The oxygen conductance of the stem base plus any pneumatophores showed a maximum in plants grown under intermediate inundation . Oxygen demand and internal gas space per unit dry weight of root were independent of extent of inundation . During high tide the plants grown at inundation periods of more than about 3-5 hours per tide were likely to become anaerobic . This may constitute a physiological limit for this species at the bottom of the tidal range . 23

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Über die Luftwurzeln von Sonneratia Linn. f. und ihre biologische Bedeutung

Cited by 40 publications

References 11 publications

Effect of the Root System on Tomato Stem Growth

Effect of the Root System on Tomato Stem Growth

Aerenchyma formation and porosity in root of a mangrove plant, Sonneratia alba (Lythraceae)

Ventilation and respiration in roots of one-year-old seedlings of grey mangrove Avicennia marina (Forsk.) Vierh.

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