Mannitol inhibits growth of intact cucumber but not pea seedlings by mechanically collapsing the root pressure

Stahlberg, Rainer; Cosgrove, Daniel J.

doi:10.1046/j.1365-3040.1997.d01-141.x

Cited by 20 publications

(4 citation statements)

References 43 publications

(80 reference statements)

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“…Finally, root pressure may regulate shoot growth by pressurizing expanding cells (Stahlberg & Cosgrove 1997; Munns et al . 2000).…”

Section: Under the Canopy: Patterns Of Early Angiosperm Ecophysiologimentioning

confidence: 99%

“…Furthermore, recent data indicate that basal angiosperms are especially vulnerable to drought-induced cavitation (Hacke et al 2006). Finally, root pressure may regulate shoot growth by pressurizing expanding cells (Stahlberg & Cosgrove 1997;Munns et al 2000). Rates of cell and tissue expansion reflect a complex interplay of turgor as well as biochemical and biomechanical processes (i.e.…”

Section: Leaf Teethmentioning

confidence: 99%

“…Finally, dependence on root pressure for growth and embolism refilling would be expected to decline as angiosperms branched out into brighter and drier habitats or as plant size increased. This is because opportunities to generate root pressure drop off as rainfall and humidity decline.The unyoking of root pressure 'addiction' likely involved the increases in xylem cavitation resistance, rapid stomatal control to humidity and leaf water potential, as well as evolution of physiological mechanisms of osmotic adjustment to maintain turgor and embolism refilling under tension (Stahlberg & Cosgrove 1997;Sperry 2003).…”

Section: Early Breakout Habitats and Ecophysiologiesmentioning

confidence: 99%

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The ecophysiology of early angiosperms

Feild

Arens

2007

Plant Cell & Environment

122

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Angiosperms first appeared during the Early Cretaceous, and within 30 million years they reigned over many floras worldwide. Associated with this rise to prominence, angiosperms produced a spectrum of reproductive and vegetative innovations, which produced a cascade of ecological consequences that altered the ecology and biogeochemistry of the planet. The pace, pattern and phylogenetic systematics of the Cretaceous angiosperm diversification are broadly sketched out. However, the ecophysiology and environmental interactions that energized the early angiosperm radiation remain unresolved. This constrains our ability to diagnose the selective pressures and habitat contexts responsible for the evolution of fundamental angiosperm features, such as flowers, rapid growth, xylem vessels and net-veined leaves, which in association with environmental opportunities, drove waves of phylogenetic and ecological diversification. Here, we consider our current understanding of early angiosperm ecophysiology. We focus on comparative patterns of ecophysiological evolution, emphasizing carbon-and water-use traits, by merging recent molecular phylogenetic studies with physiological studies focused on extant basal angiosperms. In doing so, we discuss how early angiosperms established a roothold in preexisting Mesozoic plant communities, and how these events canalized subsequent bursts of angiosperm diversification during the Aptian-Albian.

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“…Finally, root pressure may regulate shoot growth by pressurizing expanding cells (Stahlberg & Cosgrove 1997; Munns et al . 2000).…”

Section: Under the Canopy: Patterns Of Early Angiosperm Ecophysiologimentioning

confidence: 99%

Section: Leaf Teethmentioning

confidence: 99%

Section: Early Breakout Habitats and Ecophysiologiesmentioning

confidence: 99%

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The ecophysiology of early angiosperms

Feild

Arens

2007

Plant Cell & Environment

122

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“…This so-called root pressure is more prominent in some plant species than in others. It is apparent in such phenomena as guttation (the appearance of droplets at the leaf periphery of grasses and broad-leafed plants and the so-called bleeding of decapitated stumps (Stahlberg & Cosgrove 1997). Root pressure is required when humid air or lack of leaves in the spring prevents normal water and ion transport by transpiration-driven tension in the vascular bundles.…”

Section: Osmotic Motorsmentioning

confidence: 99%

What can we learn from nastic plant structures? The phytomimetic potentiality of nastic structures

Stahlberg

Taya

2006

SPIE Proceedings

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While some researchers see developments on the nanotechnology scale as the major or exclusive biomimetic trend in the 21st century, others insist that the exploration of the biomimetic potentialities of macroscopic systems has hardly been started. On either scale exploration of biological systems and development of engineering materials proceed in parallel and this provides the opportunity to actively search for similar, convergent solutions and designs in both directions. Recent studies of plant motors ranging from rapid calcium-dependent shape changes in plant proteins (forisomes) to the rapid closure of Venus flytraps and the ultra-rapid opening of dogwood flowers attracted the attention of both biologists and engineers. Here we summarize the principal differences of the nanomotors and macromotors that drive plant and animal movements. Then we describe three types of hydration motors that are common in plants: osmotic, colloid, and fibrous. In engineering electroactive polymers (EAPs) have emerged as new actuation materials with large, electrically induced strain and bending capacity. It remains to be seen whether hydrated EAPs with low voltage-actuation have bioconvergent relevance and proximity to biological situations; in particular plant movements. So far we only know that (i) pH-sensitive poly-ionic polymers like pectins are a common occurrence in the primary walls and occasionally some vacuoles of plant cells, (ii), that strong electric field changes also occur in living tissues, and (iii) that some aspects of their action are not understood and remain a matter of further investigation.

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