HELIANTHUS-ANNUUS SSP TEXANUS HAS CHLOROPLAST DNA AND NUCLEAR RIBOSOMAL-RNA GENES OF HELIANTHUS-DEBILIS SSP CUCUMERIFOLIUS

被引:121
作者
RIESEBERG, LH
BECKSTROMSTERNBERG, S
DOAN, K
机构
[1] Rancho Santa Ana Botanic Garden, Graduate Program in Botany, Claremont, CA 91711
关键词
Hybridization; Introgression; Plant taxonomy; Restriction-site variation;
D O I
10.1073/pnas.87.2.593
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Heiser [Heiser, C. B. (1951) Evolution 5, 42-51] hypothesized that Helianthus annuus ssp. texanus was derived by the introduction of H. annuus into Texas and subsequent introgression of genes from Helianthus debilis ssp. cucumerifolius into H. annuus. Although often considered to be one of the best cases of introgression in plants, alternative hypotheses to introgression, such as convergence or the joint retention of the ancestral condition, could not be ruled out in the original study. To test for the occurrence of introgression we examined 14 populations of H. annuus ssp. texanus, 14 allopatric populations of H. annuus, and three populations of H. debilis ssp. cucumerifolius with reference to diagnostic chloroplast DNA and nuclear ribosomal DNA markers. Thirteen of the 14 populations of H. annuus ssp. texanus had chloroplast DNA and/or ribosomal DNA markers of H. debilis ssp. cucumerifolius. In contrast, no chloroplast DNA or ribosomal DNA markers of H. debilis ssp. cucumerifolius were found in the 14 allopatric populations of H. annuus. Our findings provide strong support, therefore, for the hypothesized introgressive origin of H. annuus ssp. texanus.
引用
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页码:593 / 597
页数:5
相关论文
共 34 条
[21]  
KEIM P, 1989, GENETICS, V123, P557
[22]  
LEVIN DA, 1975, EVOLUTION, V29, P37, DOI 10.1111/j.1558-5646.1975.tb00812.x
[24]   HYBRIDIZATION AND REGIONAL VARIATION IN PACIFIC NORTHWESTERN IMPATIENS (BALSAMINACEAE) [J].
ORNDUFF, R .
BRITTONIA, 1967, 19 (02) :122-&
[25]  
PALMER JD, 1986, METHOD ENZYMOL, V118, P167
[26]   CHLOROPLAST DNA EVOLUTION AND THE ORIGIN OF AMPHIDIPLOID BRASSICA SPECIES [J].
PALMER, JD ;
SHIELDS, CR ;
COHEN, DB ;
ORTON, TJ .
THEORETICAL AND APPLIED GENETICS, 1983, 65 (03) :181-189
[27]   4 PEROXIDASE LOCI IN RED-FRUITED TOMATO SPECIES - GENETICS AND GEOGRAPHIC DISTRIBUTION [J].
RICK, CM ;
ZOBEL, RW ;
FOBES, JF .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1974, 71 (03) :835-839
[28]   A MOLECULAR REEXAMINATION OF INTROGRESSION BETWEEN HELIANTHUS-ANNUUS AND HELIANTHUS-BOLANDERI (COMPOSITAE) [J].
RIESEBERG, LH ;
SOLTIS, DE ;
PALMER, JD .
EVOLUTION, 1988, 42 (02) :227-238
[29]  
RIESEBERG LH, IN PRESS EVOLUTION
[30]  
Stebbins G. L., 1965, The genetics of colonizing species., P173