Zur Entstehung und Feinstruktur skulpturierter Hoftüpfel bei Leguminosen

Schmid, Roswitha; Machado, Raúl

doi:10.1007/bf01894936

Cited by 22 publications

(16 citation statements)

References 17 publications

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“…In general, the overall habitat preferences of plants with vestures are the tropics and subtropics rather than the cool temperate to arctic or alpine floras, as has been suggested previously (Schmid and Machado 1964;Zweypfenning 1978). We therefore suggest that vestured pits have a positive adaptive significance for water transport in woody plants that develop high negative pressures in their xylem.…”

Section: Ecological Trends In the Distribution Of Vestured Pitsmentioning

confidence: 53%

“…With the advent of the electron microscope, the micromorphology and distribution of vestured pits could be studied in much greater detail during the 1960s and 1970s (Cô té and Day 1962;Schmid and Machado 1964;Meylan and Butterfield 1974;Ohtani and Ishida 1976;Van Vliet 1978). Mapping the presence of vestured pits onto recent angiosperm phylogenies based on molecular sequence data has shown that the feature must be under strong genetic control and is diagnostic for all taxa of a number of clades (Jansen et al 1998(Jansen et al , 2000a(Jansen et al , 2001Jansen and Smets 2000;Jørgensen 2001).…”

Section: Introductionmentioning

confidence: 99%

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Vestured Pits: Do They Promote Safer Water Transport?

Jansen¹,

Baas

Gasson

et al. 2003

International Journal of Plant Sciences

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The distribution of vestured pits in angiosperms is briefly reviewed. In some major clades, the character is of constant occurrence and thus very conservative; in others, it is more variable and apparently subject to both parallel origins and reversible losses. There is a striking correlation between the type of vessel perforation plate and vestured pits. Virtually all taxa with vestured pits have simple perforation plates. This correlation, together with contrasting ecological trends for scalariform perforation plates and vestured pits, has inspired functional hypotheses that vestured pits contribute to hydraulic safety. Whereas scalariform perforations may be instrumental in reducing the effects of freezing-induced embolisms in temperate to boreal and alpine regions, vestured pits seem to be a good candidate to facilitate embolism reversal in xeric and warmer regions with high transpiration rates. The presence of highly lignified structures within the pit chamber may influence hydraulic resistance, decrease vulnerability to cavitation, or help to repair embolism by compartmentalizing or affecting the contact angle of the convex air-water interface within intervessel pits.

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Section: Ecological Trends In the Distribution Of Vestured Pitsmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Vestured Pits: Do They Promote Safer Water Transport?

Jansen¹,

Baas

Gasson

et al. 2003

International Journal of Plant Sciences

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“…In E. regnans they appeared to be even more clearly analogous to the warts ( Figure 8). Cote and Day (1962) and Wardrop et al (1963) considered that there was indeed an analogy between warts and vestures, while Schmid and Machado (1964) and Schmid (1965) have suggested that there is a fundamental difference in their formation. From these present observations, especially with E. regnans, their general structural appearance is undeniably similar (see also Scurfield and Silva 1970).…”

Section: Observations and Discussionmentioning

confidence: 96%

Comparative Morphology of Selected Sapwood Species Using the Scanning Electron Microscope

Greaves¹

1973

Holzforschung

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“…More pertinent is the report of structures comparable to the verrucae of Cercidium in another genus ofFabaceae, Prosopis (Castro 1988). Warts on vessel walls of certain Fabaceae mentioned by Schmid and Machado (1964) are smaller in size. The diversity of verrucae in Cercidium is surprising, and is summarized under Taxonomic Conclusions below.…”

Section: Morphological Conclusionmentioning

confidence: 97%

Wood Anatomy of Cercidium (Fabaceae), with Emphasis on Vessel Wall Sculpture

Carlquist¹

1989

aliso

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ABSTRAcrQuantitative and qualitative data are presented for wood anatomy of the seven species of Cercidium (including two subspecies of C. floridum as well as the hybrid C. x sonorae) currently recognized. Data on wood of Parkinsonia are presented for purposes of comparison. Vessel walls of Cercidium show unusual sculpture: coarse excrescences termed verrucae here, crateriform pits, and grooves interconnecting pit apertures. These plus crystal distribution, presence of septa in fibers, pit diameter, presence of vasicentric tracheids, and presence of diagonal vessel aggregations are probably species distinctions to various degrees. The crystal-bearing fibers of Cercidium, some of which have very thin walls, exemplify fiber dimorphism. Wood of Parkinsonia aculeata is amply distinct from that of Cercidium. Vessel element dimensions and density in Cercidium do not indicate exceptional xeromorphy for woods, perhaps because some species grow in desert washes, perhaps because other features (leaflessness, thick cuticle on stems) reduce transpiration. Vessel wall sculpture, vasicentric tracheid presence, and degree of vessel grouping are considered likely indicators of wood xeromorphy within the genus, however.

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Zur Entstehung und Feinstruktur skulpturierter Hoftüpfel bei Leguminosen

Cited by 22 publications

References 17 publications

Vestured Pits: Do They Promote Safer Water Transport?

Vestured Pits: Do They Promote Safer Water Transport?

Comparative Morphology of Selected Sapwood Species Using the Scanning Electron Microscope

Wood Anatomy of Cercidium (Fabaceae), with Emphasis on Vessel Wall Sculpture

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