Seeds and seasons: interpreting germination timing in the field

被引:93
作者
Donohue, K [1 ]
机构
[1] Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA
基金
美国国家科学基金会;
关键词
Arabidopsis thaliana; dormancy; life history; maternal effects; phenotypic plasticity; photoperiod; seasonal cues; stratification;
D O I
10.1079/SSR2005208
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
This paper discusses how field and laboratory experiments, using a variety of genetic material, can be combined to investigate the genetic basis of germination under realistic ecological conditions, and it reviews some of our recent work on germination phenology of Arabidopsis thaliana in the field. Our results indicate that the genetic basis of germination depends on the environment. In particular, the conditions during seed maturation interact with post-dispersal environmental factors to determine germination phenology, and these interactions have a genetic basis. Therefore genetic studies of germination need to consider carefully the environment - both during seed maturation and after dispersal - in which the experiments are conducted in order to characterize genetic pathways involved with germination in the field. Laboratory studies that explicitly manipulate ecologically relevant environmental factors can be combined with manipulative field studies. These studies can identify the particular environmental cues to which seeds respond in the field and characterize the genetic basis of germination responses to those cues. In addition, a variety of genetic material - including mutant and transgenic lines, intact natural genotypes, recombinant genotypes, and near isogenic lines - can be used in field studies as tools to characterize genetic pathways involved in germination schedules under natural ecological conditions.
引用
收藏
页码:175 / 187
页数:13
相关论文
共 52 条
[1]   POPULATION GENETIC-STRUCTURE AND OUTCROSSING RATE OF ARABIDOPSIS-THALIANA (L) HEYNH [J].
ABBOTT, RJ ;
GOMES, MF .
HEREDITY, 1989, 62 :411-418
[2]   Naturally occurring variation in Arabidopsis:: an underexploited resource for plant genetics [J].
Alonso-Blanco, C ;
Koornneef, M .
TRENDS IN PLANT SCIENCE, 2000, 5 (01) :22-29
[3]  
Alonso-Blanco C, 2003, GENETICS, V164, P711
[4]  
Baskin CC, 1998, SEEDS ECOLOGY BIOGEO
[5]   SEASONAL-CHANGES IN THE GERMINATION RESPONSES OF BURIED SEEDS OF ARABIDOPSIS-THALIANA AND ECOLOGICAL INTERPRETATION [J].
BASKIN, JM ;
BASKIN, CC .
BOTANICAL GAZETTE, 1983, 144 (04) :540-543
[6]   ECOLOGICAL LIFE-CYCLE AND PHYSIOLOGICAL ECOLOGY OF SEED-GERMINATION OF ARABIDOPSIS-THALIANA [J].
BASKIN, JM ;
BASKIN, CC .
CANADIAN JOURNAL OF BOTANY, 1972, 50 (02) :353-&
[7]   The effect of breeding systems and pollination vectors on the genetic variation of small plant populations within an agricultural landscape [J].
Berge, G ;
Nordal, I ;
Hestmark, G .
OIKOS, 1998, 81 (01) :17-29
[8]  
Bergelson J, 1998, GENETICS, V148, P1311
[9]   Seed germination and dormancy [J].
Bewley, JD .
PLANT CELL, 1997, 9 (07) :1055-1066
[10]   Survival of a lacZY-marked strain of Pseudomonas corrugata following a field release [J].
Choi, HY ;
Ryder, MH ;
Gillings, MR ;
Stokes, HW ;
Ophel-Keller, KM ;
Veal, DA .
FEMS MICROBIOLOGY ECOLOGY, 2003, 43 (03) :367-374