Beyond gibberellins and abscisic acid: how ethylene and jasmonates control seed germination

被引:252
作者
Linkies, Ada [1 ]
Leubner-Metzger, Gerhard [1 ]
机构
[1] Univ Freiburg, Fac Biol, Inst Biol 2, D-79104 Freiburg, Germany
关键词
Abscisic acid; Jasmonate; Endosperm weakening; Ethylene; Gibberellins; Seed germination; Thermoinhibition; ENDO-BETA-MANNANASE; ARABIDOPSIS-THALIANA SEEDS; CLASS-I BETA-1,3-GLUCANASE; METHYL JASMONATE; GENE-EXPRESSION; HYDROXYL RADICALS; LEPIDIUM-SATIVUM; ENDOSPERM CAP; CROSS-TALK; 1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID;
D O I
10.1007/s00299-011-1180-1
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Appropriate responses of seeds and fruits to environmental factors are key traits that control the establishment of a species in a particular ecosystem. Adaptation of germination to abiotic stresses and changing environmental conditions is decisive for fitness and survival of a species. Two opposing forces provide the basic physiological mechanism for the control of seed germination: the increasing growth potential of the embryo and the restraint weakening of the various covering layers (seed envelopes), including the endosperm which is present to a various extent in the mature seeds of most angiosperms. Gibberellins (GA), abscisic acid (ABA) and ethylene signaling and metabolism mediate environmental cues and in turn influence developmental processes like seed germination. Cross-species work has demonstrated that GA, ABA and ethylene interact during the regulation of endosperm weakening, which is at least partly based on evolutionarily conserved mechanisms. We summarize the recent progress made in unraveling how ethylene promotes germination and acts as an antagonist of ABA. Far less is known about jasmonates in seeds for which we summarize the current knowledge about their role in seeds. While it seems very clear that jasmonates inhibit germination, the results obtained so far are partly contradictory and depend on future research to reach final conclusions on the mode of jasmonate action during seed germination. Understanding the mechanisms underlying the control of seed germination and its hormonal regulation is not only of academic interest, but is also the ultimate basis for further improving crop establishment and yield, and is therefore of common importance.
引用
收藏
页码:253 / 270
页数:18
相关论文
共 172 条
[1]   COI1, a jasmonate receptor, is involved in ethylene-induced inhibition of Arabidopsis root growth in the light [J].
Adams, Eri ;
Devoto, Alessandra ;
Turner, John G. .
JOURNAL OF EXPERIMENTAL BOTANY, 2010, 61 (15) :4373-4386
[2]   Mutations in Arabidopsis acyl-CoA oxidase genes reveal distinct and overlapping roles in β-oxidation [J].
Adham, AR ;
Zolman, BK ;
Millius, A ;
Bartel, B .
PLANT JOURNAL, 2005, 41 (06) :859-874
[3]  
Alonso J M, 2001, Sci STKE, V2001, pre1, DOI 10.1126/stke.2001.70.re1
[4]  
[Anonymous], JASMONATES BIOSYNTHE
[5]  
[Anonymous], ANN PLANT REV SEED D
[6]  
[Anonymous], ACTA HORTIC
[7]  
[Anonymous], PLANT CELL IN PRESS
[8]  
[Anonymous], 2000, PLANT J
[9]   Genetic variation for lettuce seed thermoinhibition is associated with temperature-sensitive expression of abscisic acid, gibberellin, and ethylene biosynthesis, metabolism, and response genes [J].
Argyris, Jason ;
Dahal, Peetambar ;
Hayashi, Eiji ;
Still, David W. ;
Bradford, Kent J. .
PLANT PHYSIOLOGY, 2008, 148 (02) :926-947
[10]   A gene encoding an abscisic acid biosynthetic enzyme (LsNCED4) collocates with the high temperature germination locus Htg6.1 in lettuce (Lactuca sp.) [J].
Argyris, Jason ;
Truco, Maria Jose ;
Ochoa, Oswaldo ;
McHale, Leah ;
Dahal, Peetambar ;
Van Deynze, Allen ;
Michelmore, Richard W. ;
Bradford, Kent J. .
THEORETICAL AND APPLIED GENETICS, 2011, 122 (01) :95-108