A molecular framework for the embryo growth in germinating seeds of
            Solanum lycocarpum
            A. St.‐Hil., a nurse plant species

Succulents are an important component of the mixed bushveld. Although the nurse plant syndrome is known from arid areas, association of succulents with woody canopy has ot been studied in non-arid areas. The study was done in two phases, the first being to confirm the existence of an association and the second being to investigate a possible cause of the association. The three species studied were all significantly associated with woody canopy. All of the relatively small (0-1 m) Euphorbia ingens plants and most of the relatively small (0-0.5m) Aloe marlothii and Opuntia vulgaris plants encountered were beneath woody canopy. There was a very strong significant association between being damaged by fire and growing between woody canopies for all three species. Fires are likely to be lethal to any plants of the study species that are shorter than about 1 m. In any area where fires are frequent there are likely to be fewer young plants of the study species between woody canopies than there will be within the protection of a bush clump.

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Effects of selected trace metals on germinating seeds of six plant species

Water Air & Soil Pollution ◽

10.1007/bf00211832 ◽

1991 ◽

Vol 59 (3-4) ◽

pp. 231-240 ◽

Cited By ~ 43

Author(s):

Claire L. Carlson ◽

Domy C. Adriano ◽

Kenneth S. Sajwan ◽

Steven L. Abels ◽

David P. Thoma ◽

...

Keyword(s):

Trace Metals ◽

Plant Species ◽

Germinating Seeds

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The role of hydraulic lift on seedling establishment under a nurse plant species in a semi-arid environment

Perspectives in Plant Ecology Evolution and Systematics ◽

10.1016/j.ppees.2011.05.002 ◽

2011 ◽

Vol 13 (3) ◽

pp. 181-187 ◽

Cited By ~ 54

Author(s):

Iván Prieto ◽

Francisco M. Padilla ◽

Cristina Armas ◽

Francisco I. Pugnaire

Keyword(s):

Plant Species ◽

Seedling Establishment ◽

Arid Environment ◽

Hydraulic Lift ◽

Nurse Plant ◽

Semi Arid

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Slope orientation enhances the nurse effect of a paramo shrub, Hypericum irazuense (Hypericaceae) in Costa Rica

Journal of Tropical Ecology ◽

10.1017/s0266467409005999 ◽

2009 ◽

Vol 25 (3) ◽

pp. 331-335 ◽

Cited By ~ 9

Author(s):

Alejandro G. Farji-Brener ◽

Federico A. Chinchilla ◽

Ainhoa Magrach ◽

Víctor Romero ◽

Marcos Ríos ◽

...

Keyword(s):

Plant Species ◽

Environmental Changes ◽

Nurse Plant ◽

Positive Interaction ◽

Nurse Plants ◽

Nurse Effect ◽

The One ◽

The Impact ◽

Environmental Mitigation ◽

Occurrence Of Species

The nurse effect is a positive interaction in which one plant (the nurse) provides conditions that enhance the establishment and growth of another plant species (Callaway 1995). Increased environmental severity appeared to increase the strength of nurse effects (Brooker et al. 2008, Lortie & Callaway 2006). On the one hand, the impact of the nurse effect depends on the magnitude of the environmental changes exerted by the nurse plant. On the other hand, the impact could depend on the number of plant species in the regional pool that respond to such changes. For example, better conditions beneath the crowns of nurse plants might allow the occurrence of species that are sensitive to environmental stress and that occur infrequently in open areas. Thus, if a nurse plant modulates environmental conditions that are critical for the persistence of other plant species, it seems likely that such nurse plants would have greater effects in stressful habitats, where they cause relatively larger environmental mitigation (Badano et al. 2006, Callaway et al. 2002).

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Comparative performance of the giant cardon cactus (Pachycereus pringlei) seedlings under two leguminous nurse plant species

Journal of Arid Environments ◽

10.1016/j.jaridenv.2005.08.002 ◽

2006 ◽

Vol 65 (3) ◽

pp. 351-362 ◽

Cited By ~ 27

Author(s):

H. Suzán-Azpiri ◽

V.J. Sosa

Keyword(s):

Plant Species ◽

Nurse Plant ◽

Comparative Performance ◽

Pachycereus Pringlei

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Gaseous and volatile exudates from germinating seeds and seedlings

Canadian Journal of Botany ◽

10.1139/b76-049 ◽

1976 ◽

Vol 54 (5-6) ◽

pp. 518-532 ◽

Cited By ~ 26

Author(s):

V. Vančura ◽

G. Stotzky

Keyword(s):

Gas Chromatography ◽

Formic Acid ◽

Volatile Compounds ◽

Plant Species ◽

Qualitative And Quantitative ◽

Volatile Metabolites ◽

Ecological Implications ◽

Organic Volatiles ◽

Yellow Pine ◽

Germinating Seeds

The quantities of gaseous and volatile metabolites liberated by germinating seeds and seedlings appeared to be related, in general, to the amount of storage substances present in the seeds. Both qualitative and quantitative differences were found between various plant species and varieties of both angiosperms and gymnosperms. The release of volatile compounds preceded the appearance of the first root and, with most seeds, was greatest in the first 24 to 48 h. Organic volatiles could be detected, by gas chromatography, in as little as 5% of the atmosphere from one germinating seed. All seeds that were studied liberated ethanol, and most seeds evolved methanol, formaldehyde, acetaldehyde, formic acid, ethylene, and propylene. Propionaldehyde and (or) acetone was also evolved by cotton, pea, and yellow pine. The possible source of these volatile metabolites and their ecological implications are discussed.

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