Assimilatory Starch for Growth in Arabidopsis thaliana Wild-Type
127
300
~
..-3:
I'+- 250
0'1
0 200
E
::t
'--"
-+--'
150
c
(I)
-+--'
C
0 100
0
£
0
50
I.....
0
-+--'
U)
0
0
Aro bidopsis tho lio no
o 0
o •
•
•
•
o
•
10
20
Bayreuth, 1989
Wild type
high N, low light
Oevening
• morning
•
30
leaf biomass (mgfw)
40
Fig. 6.3. Starch content in leaves as a function of leaf weight used as an indicator of leaf
age
16
(/)
(/)
0
E
14
0
.J:l
c~ 12
I >C
0
0
-0
10
.J:l
L
3
0
0
u~
I
8
'+Ol
0
()
c
6
(l)
0
E E
(l)
E
L
4
u
c
>2
0
0
0
Arabidopsis thaliana
+
high light
!//
high N
~¥
t
~
~hi9h light
f----- - -
low N
~/
y~~
/7 ' "
low light
r/
high N
o
2
4
6
8
Diurnal starch turnover
-1
-1
(mmol C g ow day )
Fig. 6.4. Comparison of the daily increment of carbon in biomass and the daily turnover
of starch