Results 181 to 190 of about 10,095 (215)

Aerenchyma Formation in Plants

2013
Aerenchyma enhances internal aeration between, and within, shoots and roots. Aerenchyma formation is therefore important for the adaptation of plants in environments with excess water, such as plants with roots in waterlogged soils or submerged shoots.
Hirokazu Takahashi, Takaki Yamauchi, Timothy David Colmer, Mikio Nakazono   +3 more
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EFFECT OF ETHYLENE ON AERENCHYMA DEVELOPMENT

American Journal of Botany, 1981
When applied to a part of stem or basal part of stem and root system, 1 ppm ethylene induced lysigenous aerenchyma development in the stem cortex of Helianthus annuus, Lycopersicon esculentum, and Phaseolus vulgaris. Local application of ethylene to a part of stem significantly increased the activity of cellulase in that part of stem in the above three
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DIAPHRAGMS AND AERENCHYMA IN SCIRPUS VALIDUS

American Journal of Botany, 1971
After the short‐lived apical meristem ceases activity, a basal intercalary meristem produces all new tissues in the aerial internode of Scirpus validus Vahl. These include extensions of the original vascular system and of the original partitioning walls as well as new vascular bundles and new
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Aerenchyma Formation and Methane and Oxygen Exchange in Rice

Soil Science Society of America Journal, 1993
Abstract Limited information exists on the direct link between the intensity of soil reduction or anaerobiosis and gas exchange in rice ( Oryza sativa L.). A laboratory experiment was conducted to determine the extent to which specific levels of soil redox potential (Eh ...
H. K. Kludze, R. D. DeLaune, W. H. Patrick   +2 more
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ROLE OF CELLULASE IN AERENCHYMA DEVELOPMENT IN SUNFLOWER

American Journal of Botany, 1979
A hypothesis that ethylene causes aerenchyma development in waterlogged plants through increased cellulase activity was tested with sunflower, Helianthus annuus L. Treatment with commercial cellulase induced aerenchyma development in sunflower stem sections.
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A Re‐examination of the Functional Significance of Aerenchyma

Physiologia Plantarum, 1972
AbstractModel roots of known length and internal porosity were assayed for ROL (radial oxygen loss) by the cylindrical Pt electrode technique and a series of curves were obtained which express the inter‐relationships between ROL and diffusion path length over a wide range of internal porosity levels.The results indicate that internal porosity can exert
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The Parichnos Problem and the Function of Aerenchyma in the Lycopsida

Bulletin of the Peabody Museum of Natural History, 2014
Abstract The term parichnos, coined in 1891, has been used since then with more or less precision to describe a morphological or anatomical feature in several taxa of fossilized lycopsids. The parichnos is a tissue system found surrounding or accompanying the (vascular) leaf traces on their paths from the stele to the leaves.
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CO2 and O2 transport in the aerenchyma of Cyperus papyrus L.

Aquatic Botany, 1995
Abstract Cyperus papyrus L. (papyrus) is an emergent wetland species with C 4 photosynthesis. Culms of papyrus possess numerous large intercellular air cavities and functional ‘Kranz’ chlorenchyma which are involved in CO 2 recycling in the culm. In darkness, the CO 2 concentration in the culms increased to 74 times that of the ambient air.
Meirong Li, Michael B. Jones
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HIGH CARBON DIOXIDE CONCENTRATIONS IN AERENCHYMA OF TYPHA LATIFOLIA

American Journal of Botany, 1992
Diurnal and seasonal patterns of CO2 concentration ([CO2]) in leaf gas spaces were measured to better understand the relationship of sediment‐derived CO2 to photosynthesis in the emergent wetland species, Typha latifolia L. (cattail). Leaf [CO2] was above 2,000 μl/liter at dawn on all but the first sampling date.
John Y. H. Constable, James B. Grace, David J. Longstreth   +2 more
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A reassessment of the influence of NAA on aerenchyma formation in maize roots

New Phytologist, 1991
summaryThe effect of 1‐naphthylacetic acid (NAA: 10−9to 10−5M) on extension growth and aerenchyma formation in second‐whorl adventitious roots of Zea mays L. (cv. LG11) was examined. Treatments were applied continuously for 12, 8 or 3 d following initial periods in NAA‐free solution.
S. H. F. W. JUSTIN, W. ARMSTRONG
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