Flowering Plant Families of East Africa. An Introduction to Plant Taxonomy

Kew Bulletin ◽  
1995 ◽  
Vol 50 (3) ◽  
pp. 668
Author(s):  
J. M. Lock ◽  
John O. Kokwaro
Keyword(s):  
East Africa ◽  
Flowering Plant ◽  
Plant Taxonomy ◽  
Plant Families

Chemical principles of Boophone, Nerine, Crossyne, Clivia, Cryptostephanus, Haemanthus and Scadoxus of the South African Amaryllidaceae and their biological properties

Planta Medica ◽  
2021 ◽  
Author(s):  
Jerald Nair ◽  
Johannes Van Staden
Keyword(s):  
South African ◽  
Biological Activities ◽  
Structural Diversity ◽  
Biological Properties ◽  
Isoquinoline Alkaloid ◽  
Flowering Plant ◽  
New Information ◽  
Regulatory Effects ◽  
Plant Families ◽  
Antioxidant Effects

The Amaryllidaceae features prominently amongst bulbous flowering plant families. Accommodating about a third of its species, South Africa affords a sound basis for Amaryllidaceae plant research. Boophone, Nerine, Crossyne, Clivia, Cryptostephanus, Haemanthus and Scadoxus have been well-represented in such endeavors. The account herein summarizes the studies undertaken between 2013-2020 on these genera in regards to their chemical and biological characteristics. A total of 136 compounds comprising 63 alkaloids and 73 non-alkaloid entities were described during this period from eighteen members of the title genera. The alkaloids were reflective of the structural diversity found in eight isoquinoline alkaloid groups of the Amaryllidaceae. Of these, the crinane (29 compounds), lycorane and homolycorine (11 compounds each) groups were the most-represented. The non-alkaloid substances were embracive of the same number of unrelated groups including, acids, phenolics, flavonoids and triterpenoids. A wide variety of assays were engaged to ascertain the biological activities of the isolated compounds, notably in regards to cancer and motorneuron-related diseases. There were also attempts made to determine the antimicrobial, anti-inflammatory and antioxidant effects of some of the substances. New information has also emerged on the herbicidal, insecticidal and plant growth regulatory effects of selected alkaloid principles. Coupled to the biological screening measures were in instances probes made to establish the molecular basis to some of the activities, particularly in relation to cancer and Parkinsonʹs disease.

The delayed and geographically heterogeneous diversification of flowering plant families

2020 ◽  
Vol 4 (9) ◽  
pp. 1232-1238 ◽  
Author(s):  
Santiago Ramírez-Barahona ◽  
Hervé Sauquet ◽  
Susana Magallón
Keyword(s):  
Flowering Plant ◽  
Plant Families

The Identification of Flowering Plant Families

Taxon ◽  
1965 ◽  
Vol 14 (6) ◽  
pp. 203
Author(s):  
J. McNeill ◽  
P. H. Davis ◽  
J. Cullen
Keyword(s):  
Flowering Plant ◽  
Plant Families

The usage of the alternative names of eight flowering plant families

Taxon ◽  
2003 ◽  
Vol 52 (4) ◽  
pp. 853-856 ◽  
Author(s):  
Ann McNeil ◽  
Richard K. Brummitt
Keyword(s):  
Flowering Plant ◽  
Plant Families

scholarly journals Convergent Evolution of Disease Resistance Gene Specificity in Two Flowering Plant Families

2004 ◽  
Vol 16 (2) ◽  
pp. 309-318 ◽  
Author(s):  
Tom Ashfield ◽  
Laura E. Ong ◽  
Kan Nobuta ◽  
Christopher M. Schneider ◽  
Roger W. Innes
Keyword(s):  
Disease Resistance ◽  
Resistance Gene ◽  
Convergent Evolution ◽  
Flowering Plant ◽  
Disease Resistance Gene ◽  
Plant Families

scholarly journals Diversification in Monkeyflowers: An Investigation of the Effects of Elevation and Floral Color in the Genus Mimulus

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Ezgi Ogutcen ◽  
Brooklyn Hamper ◽  
Jana C. Vamosi
Keyword(s):  
High Elevation ◽  
Flowering Plant ◽  
Floral Colour ◽  
Transition Rates ◽  
Extinction Rates ◽  
Floral Color ◽  
Speciation Rates ◽  
Evolutionary Success ◽  
Plant Families ◽  
High Elevations

The vast diversity of floral colours in many flowering plant families, paired with the observation of preferences among pollinators, suggests that floral colour may be involved in the process of speciation in flowering plants. While transitions in floral colour have been examined in numerous genera, we have very little information on the consequences of floral colour transitions to the evolutionary success of a clade. Overlaid upon these patterns is the possibility that certain floral colours are more prevalent in certain environments, with the causes of differential diversification being more directly determined by geographical distribution. Here we examine transition rates to anthocyanin + carotenoid rich (red/orange/fuschia) flowers and examine whether red/orange flowers are associated with differences in speciation and/or extinction rates in Mimulus. Because it has been suggested that reddish flowers are more prevalent at high elevation, we also examine the macroevolutionary evidence for this association and determine if there is evidence for differential diversification at high elevations. We find that, while red/orange clades have equivalent speciation rates, the trait state of reddish flowers reverts more rapidly to the nonreddish trait state. Moreover, there is evidence for high speciation rates at high elevation and no evidence for transition rates in floral colour to differ depending on elevation.

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