Chemistry Reference
In-Depth Information
Table 18.4
Functions of plant lectins
a
.
Activity
Example of lectin
Protection from fungal attack
Hevea brasiliensis
(rubber tree),
Urtica
dioica
(stinging nettle),
Solanum tube-
rosum
(potato)
Protection from herbivorous ani-
mals
Phaseolus vulgaris
(French bean),
Rici-
nus communis
(castor bean),
Galanthus
nivalis
(snowdrop),
Triticum vulgare
(wheat)
Association of hydrolytic enzyme
activity with lectin-like domain
Strawberry
β
- galactosidase, tomato
endo -
1,4 - glucanase (cellulase)
SlCel9C1
b
β
External
Involvement in establishing the
symbiosis between plants and
bacteria
Pisum sativum
(common pea),
Lotono-
nis bainesii
(miles lotononis),
Arachis
hypogaea
(peanut),
Triticum vulgare
(wheat),
Oryza sativa
(rice)
Biosignaling by a receptor kinase
with an extracellular lectin-like
domain
LysM domain in Nod-factor perception
(
Lotus japonicus, Medicago truncatula
)
and leguminous lectin-like domain
(
Arabidopsis thaliana, Populus nigra
var.
italica
)
Storage proteins
Valid for all seed lectins
Ordered deposition of storage
proteins and enzymes in protein
bodies and mediation of contact
between storage proteins and
protein body membranes
Pisum sativum
(common pea),
Lens
culinaris
(lentil),
Glycine max
(soybean),
Oryza sativa
(rice)
Modulation of enzymatic activi-
ties such as phosphatases
Secale cereale
(rye),
Solanum tuberosum
(potato),
Pleurotus ostreatus
(oyster mush-
room),
Glycine max
(soybean),
Dolichos
bifl orus
(horse gram)
Internal
Participation in growth regula-
tion
Medicago sativa
(alfalfa),
Cicer arietinum
(chick pea)
Adjustment to altered environ-
ment conditions
Triticum aestivum
(winter wheat)
a
For further information on carbohydrate specifi cities, please see Table 18.1; for recent review,
please see [2] .
b
formerly called TomCel8 (tom for tomato; Cel for cellulase), now SlCel9C1 (Sl for
Solanum
lycopersicon
, now
Lycopersicon esculentum
) .
