Nuclear DNA amounts in Macaronesian Angiosperms
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Transcript of Nuclear DNA amounts in Macaronesian Angiosperms
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
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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