Leucaena leucocephala ( petai belalang ) has been described as a ‘miracle
tree’ for its multiple uses, yet also dubbed as a ‘conflict tree’ as a noxious
weed.
Described
as the world’s most widely used forage tree legume by FAO, L. leucocephala in an excellent source of high-protein fodder for
animal feed and excellent firewood, and efficient in nitrogen fixation. The young shoots, young pods, and mature
seeds are consumed as food for human. However,
it contains mimosine, a toxic amino acid to non-ruminant vertebrates.
Yet,
it is listed as one of the 100 worst invasive alien species by IUCN Invasive
Species Specialist Group. It can grow
wide range of soil and rainfall environment, grows quickly and forms dense
thickets and produces large quantity of seeds.
Key words : allelopathic, N-fixation, mimosine.
Neptunia plena ( aquatic sensitive plant ) is an invasive plant thriving on
waterlogged area and watercourses. It is
not confined to wetlands but tolerates considerable flooding. During dry period, the plants become dormant
and persist as seeds. It can lead to
increased algal blooms reduce water quality by preventing light penetration and
reduce oxygenation of water.
N.
plena and N. oleracea are both referred as ‘water mimosa’. Water mimosa is a restricted invasive plant
under Queensland’s Biosecurity Act 2014.
Key words : allelopathic, N-fixation, mimosine. thigmonasty
Mimosa pudica ( sensitive plant ) is most probably the well-known for
its rapid plant movement. It is most
often grown as potted plants for its curiosity value. It also became an ideal plant for experiments
regarding plant habituation and memory.
M. pudica has been listed in the Global
Invasive Species Databease 2010.
Key words : allelopathic, N-fixation, nyctinastic,
mimosine. thigmonasty
Mimosa diplotricha ( giant sensitive plant ) includes 3 varieties : diplotricha, odibilis and inermis.
Although
M. diplotricha is an excellent ground
cover and green manure, it is restricted invasive plant under Queensland’s
Biosecurity Act 2014.
Key words : allelopathic, heliophytic, N-fixation,
nyctinastic, mimosine. thigmonasty
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