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Nuclear DNA amounts in Macaronesian Angiosperms. Jan Suda Department of Botany, Faculty of Science, Charles University Institute of Botany, Academy of Sciences of the Czech Republic. B a s i c d a t a. M a c a r o n e s i a n f l o r a. Total number of species:ca 2 500 - PowerPoint PPT Presentation
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Nuclear DNA amounts in Macaronesian Angiosperms
Jan SudaDepartment of Botany, Faculty of Science, Charles University
Institute of Botany, Academy of Sciences of the Czech Republic
B a s i c d a t aB a s i c d a t a B a s i c d a t aB a s i c d a t a
M a c a r o n e s i a n f l o r aM a c a r o n e s i a n f l o r aM a c a r o n e s i a n f l o r aM a c a r o n e s i a n f l o r a
Total number of species: ca 2 500
Endemic species: ca 600
Endemic genera: ca 31
- high proportion of woody life-forms
- many taxa succulent
- low frequency of geophytes, annuals
- recent diversification (adaptive radiation,
vicarization, inter-island differentiation)
F C M a s s a y sF C M a s s a y sF C M a s s a y sF C M a s s a y s
0
150
300
450
600
750
0 250 500 750 1000
R e la tiv e f lu o re sc e n c e
Num
ber
of n
ucle
i
D. b
ourg
eaua
na, C
=0.
19 p
g
D. l
emsi
i, C
=0.
23 p
g
G 2
0
80
160
240
320
400
0 250 500 750 1000
2 x 4 x
8 x
L.e.
G 2
R e la tiv e f lu o re sc e n c e
Num
ber
o f n
u cle
i
0
250
500
750
1000
1250
0 250 500 750 1000
R e la tiv e f lu o re sc e n c e
Num
ber
of n
ucle
i
A. h
aoua
ryth
eum
A. f
rute
scen
s
R e s u l t sR e s u l t s R e s u l t sR e s u l t s
2 0 0 3
0
2
46
8
10
1214
16
18
0 1 2 3 4 5 6 7 8 9 10C - value (pg)
Nu
mb
er o
f ta
xa
2 0 0 2
0
2
4
6
8
10
12
14
16
0 1 2 3 4 5 6 7 8 9 10C - value (pg)
Num
ber
of ta
xa
S u m m a r y
0
5
10
15
20
25
30
35
0 1 2 3 4 5 6 7 8 9 10C - value (pg)
Num
ber o
f tax
a
241 species (40 % of the endemic flora)
C - v a l u e s c o m p a r i s o nC - v a l u e s c o m p a r i s o nC - v a l u e s c o m p a r i s o nC - v a l u e s c o m p a r i s o n
very small (< 1.4 pg)
small (1.4 1- 3.5 pg)
intermediate (3.51 - 14 pg)
large (14.01 - 35 pg)
very large (> 35.01 pg)
0
10
20
30
40
50
60
70
80
Prop
ortio
n (%
)
Database Macaronesia
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Database Macaronesia
v ery small small intermediate large v ery large
0
10
20
30
40
50
60
0 1 2 3 4 5 6 7 8 9 10
C-value (pg)
Num
ber
of ta
xa
very small small intermediate
C - v a l u e s c o m p a r i s o n C - v a l u e s c o m p a r i s o n C - v a l u e s c o m p a r i s o n C - v a l u e s c o m p a r i s o n
Database Macaronesia
Min 0.17 0.19
Max 127.4 9.52
Range 750 50
Mean 6.34 1.97
Median 2.9 1.02
Mode 0.55 0.51
n 3478 241
Endemic genera
Total: 31
Analyzed: 23 (74 %)Assumed: +4 (87%)
Very small C-values: 19 (83%)Assumed: +2 (78%)
Small C-values: 1 (4%)Assumed: +1 (7%)
Intermediate C-values: 3 (13%)Assumed: +1 (15%)
Correlation with environmental conditionsCorrelation with environmental conditionsCorrelation with environmental conditionsCorrelation with environmental conditions
13.69
14.41
14.14
14.28
14.18
13.94
13.77
Altitude Rainfall Temperature
Argyranthemum (n=7) - - +
Silene (n=4) (-) - +
Micromeria (n=4) (-) - +
Crambe (n=4) + + -
Sonchus (n=3) + + -
W h e r e f i n d m o r e . . . W h e r e f i n d m o r e . . . W h e r e f i n d m o r e . . . W h e r e f i n d m o r e . . .
Suda J., Kyncl T. & Freiová R. (2003): Nuclear DNA amounts in Macaronesian Angiosperms. –
Annals of Botany 92/1: 153-164.
Suda J. & Kyncl T. (xxxx): Nuclear DNA amounts in Macaronesian Angiosperms - forty percent of
the endemic flora finished (in prep.)
Suda J. (xxxx): Macaronesian angiosperms: selection towards very small genomes (in prep.)
Future intentions:
Comparative study of plant C-value variation in Havaiian and Galapagos archipelagos